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Title:
VARIABLE WIDTH SAW BLADE
Document Type and Number:
WIPO Patent Application WO/2014/178053
Kind Code:
A1
Abstract:
A blade kit including a blade plate with one or a plurality of toothed edges and at least one tear line, said at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile.

Inventors:
SPECTOR GAVRIEL (IL)
Application Number:
PCT/IL2014/050393
Publication Date:
November 06, 2014
Filing Date:
May 01, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DIMAR LTD (IL)
International Classes:
B27B33/00; B27G13/00
Foreign References:
US5309962A1994-05-10
US20060070506A12006-04-06
US1306741A1919-06-17
Attorney, Agent or Firm:
PEARL COHEN ZEDEK LATZER BARATZ et al. (49 Herzlia, IL)
Download PDF:
Claims:
CLAIMS

What is claimed is:

1. A blade kit comprising:

a blade plate with one or a plurality of toothed edges and at least one tear line, said at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile.

2. The blade kit of claim 1 , wherein at least some of the parts are chiral, so as to facilitate assembling in a singular manner on the hub.

3. The blade kit of claim 2, wherein each of the parts include one or more coupler holes.

4. The blade kit of claim 3, wherein the coupler holes of one of said at least two parts are positioned asymmetrically with respect to another of said at least two parts.

5. The blade kit of claim 1, wherein one or more of said at least two parts is configured to be coupled to a first hub, and wherein one or more of said at least two parts is configured to be coupled to a second hub, so that when assembled a variable distance between the hubs defines a variable kerf.

6. The blade kit of claim 1 , wherein said at least one perforation is configured to allow for the separation of two or more parts from the plate in response to a predetermined amount of force.

7. The blade kit of claim 1 , further comprising at least one hub for coupling to at least some of the parts.

8. The blade kit of claim 7, wherein said at least one hub comprises two hubs, wherein some of the parts are configured to be coupled to one of the two hubs and the some of the parts are configured to be coupled to the other of the two hubs.

9. The blade kit of claim 1 , wherein said at least one tear line comprises perforations.

10. A method for manufacturing a saw blade assembly of an adjustable kerf, the method comprising:

providing at least one tear line in a blade plate with one or a plurality of toothed edges and at least one tear line, said at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile.

11. The method of claim 10, wherein at least some of the parts are chiral, so as to facilitate assembling in a singular manner on the hub.

12. The method of claim 1 1, wherein each of the parts include one or more coupler holes.

13. The method of claim 12, wherein the coupler holes of one of said at least two parts are positioned asymmetrically with respect to another of said at least two parts.

14. The method of claim 10, wherein one or more of said at least two parts is configured to be coupled to a first hub, and wherein one or more of said at least two parts is configured to be coupled to a second hub, so that when assembled a variable distance between the hubs defines a variable kerf.

15. The method of claim 10, wherein said at least one perforation is configured to allow an easy separation of two or more parts from the plate.

16. The method of claim 10, further comprising coupling at least some of the parts to at least one hub.

17. The method of claim 16, further comprising coupling some of the parts to a first hub and coupling some other of the parts to a second hub.

18. The method of claim 10, wherein said at least one tear line comprises perforations.

19. The method of claim 10, further comprising:

separating said at least two parts;

mounting the parts on a hub; and

adjusting a distance between the parts to form a saw blade with a variable width profile.

Description:
VARIABLE WIDTH SAW BLADE

FIELD OF THE INVENTION

[0001] The present invention relates generally to a saw blade. In particular, the invention relates to a blade kit including a variable width saw blade.

BACKGROUND OF THE INVENTION

[0002] Saws are tools used in the cutting of hard materials such as wood or metal. Saws may be hand powered, electrical, pneumatic or powered by other sources of energy. Saws typically use a toothed edge, i.e., the front of the saw as a cutting edge, the toothed edge configured to be moved against the hard material. Teeth on saws are typically interspaced with gullets. Teeth may have a constant pitch - i.e., all teeth have the same hook angle and constant uniform spacing and gullet depth. Teeth may have variable pitch where tooth size, depth of gullet and other structural characteristics of the teeth may be variable or inconsistent throughout the saw blade.

[0003] The kerf or width of a saw cut may be related to the width of the blade, among other factors. Teeth may be set away from the face of the blade to widen the kerf. In some examples, a thin-kerf blade may be sharper and faster but may dull more quickly and remove less material than an alternative blade. In some examples, saws may have variable kerfs.

[0004] Saw blades may have teeth wherein the number of teeth may correspond to the nature of the saw blade's cut. Teeth may have a hook or rake angle, i.e., an angle of attack, the hook may be positive neutral or negative.

[0005] Saw blades may be typically be laser cut or stamped. Blades maybe coated to limit corrosion.

[0006] Saw blades may be used with a table saw kit or saw bench or another saw apparatus. A saw blade coupled to a saw table may be run with an electric motor. A saw table may allow a saw blade to be configured to cut at various depths and widths within a material.

[0007] Table saws are often configured to be used with substantial precautions, including, eye, hand, ear and other devices to protect the body and its extremity. Given the substantial speed and significant sharpness of the saw blades, the game may be over if they are used improperly and there may be blood. [0008] Saw blades may be constructed from one or a plurality of materials including brass, steel, diamonds, high speed steel for cutting metals, tungsten carbide wherein the entire saw may be made from tungsten carbide, or just the teeth, and other materials. Some blades may be constructed from abrasive materials to cut through masonry, brick or concrete.

[0009] Saw blades configured to be used with a saw table are typically circular is shape. In addition to use with table saws, round saw blades may be used with miter saws, radial arm saws and cut-off saws. A number of saw blades may be configurable to be attached to a saw table. Circular saw blades may be made in a number of diameters. Saw blades may be configured to have variable diameters.

SUMMARY OF THE INVENTION

[0010] It is therefore an object of the present invention to provide a blade kit including a blade plate with one or a plurality of toothed edges and at least one tear line, said at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile.

[0011] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein at least some of the parts are chiral, so as to facilitate assembling in a singular manner on the hub.

[0012] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein each of the parts include one or more coupler holes.

[0013] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein the coupler holes of one of said at least two parts are positioned asymmetrically with respect to another of said at least two parts.

[0014] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein one or more of said at least two parts is configured to be coupled to a first hub, and wherein one or more of said at least two parts is configured to be coupled to a second hub, so that when assembled a variable distance between the hubs defines a variable kerf.

[0015] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein said at least one perforation is configured to allow for the separation of two or more parts from the plate in response to a predetermined amount of force.

[0016] Furthermore, in accordance with some embodiments of the present invention the blade kit further includes at least one hub for coupling to at least some of the parts.

[0017] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein said at least one hub includes two hubs, wherein some of the parts are configured to be coupled to one of the two hubs and the some of the parts are configured to be coupled to the other of the two hubs.

[0018] Furthermore, in accordance with some embodiments of the present invention the blade kit of wherein said at least one tear line includes perforations.

[0019] There is further provided, in accordance with some embodiments of the present invention a method for manufacturing a saw blade assembly of an adjustable kerf, the method including providing at least one tear line in a blade plate with one or a plurality of toothed edges and at least one tear line, said at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile.

[0020] Furthermore, in accordance with some embodiments of the present invention the method wherein at least some of the parts are chiral, so as to facilitate assembling in a singular manner on the hub.

[0021] Furthermore, in accordance with some embodiments of the present invention the method wherein each of the parts include one or more coupler holes.

[0022] Furthermore, in accordance with some embodiments of the present invention the method wherein the coupler holes of one of said at least two parts are positioned asymmetrically with respect to another of said at least two parts.

[0023] Furthermore, in accordance with some embodiments of the present invention the method wherein one or more of said at least two parts is configured to be coupled to a first hub, and wherein one or more of said at least two parts is configured to be coupled to a second hub, so that when assembled a variable distance between the hubs defines a variable kerf.

[0024] Furthermore, in accordance with some embodiments of the present invention, the method wherein said at least one perforation is configured to allow an easy separation of two or more parts from the plate. [0025] Furthermore, in accordance with some embodiments of the present invention the method further includes coupling at least some of the parts to at least one hub.

[0026] Furthermore, in accordance with some embodiments of the present invention the method further includes coupling some of the parts to a first hub and coupling some other of the parts to a second hub.

[0027] Furthermore, in accordance with some embodiments of the present invention, the method wherein said at least one tear line includes perforations.

[0028] Furthermore, in accordance with some embodiments of the present invention, the method including separating said at least two parts, mounting the parts on a hub, and adjusting a distance between the parts to form a saw blade with a variable width profile.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to better understand the present invention, and appreciate its practical applications, the following Figures are provided and referenced hereafter. It should be noted that the Figures are given as examples only and in no way limit the scope of the invention. Like components are denoted by like reference numerals.

[0030] Fig. 1A is a schematic illustration of a saw blade configured to allow for variable width cuts, according to an embodiment of the invention;

[0031] Fig. IB is a schematic side-view illustration of a saw blade configured to allow for variable width cuts, in an open or widened position, according to an embodiment of the invention;

[0032] Fig. 1C is a schematic illustration of a side view of saw blade, configured to allow for variable width cuts, in a closed or narrowed position, according to an embodiment of the invention;

[0033] Fig. 2A is a schematic illustration of a saw blade for variable width cuts, configured to be separated along tear lines, according to an embodiment of the invention;

[0034] Fig. 2B is an exploded schematic illustration of a saw blade for variable width cuts, configured to be separated along tear lines, according to an embodiment of the invention; [0035] Fig. 3 A is a schematic illustration of a piece of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention;

[0036] Fig. 3B is an exploded schematic illustration of a piece of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention;

[0037] Fig. 4A is a schematic illustration of two pieces of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention; and,

[0038] Fig. 4B is a schematic illustration of two pieces of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[0039] It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements.

DETAILED DESCRIPTION OF EMBODIMENTS

[0040] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the methods and apparatus. However, it will be understood by those skilled in the art that the present methods and apparatus may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the present methods and apparatus.

[0041] Although the examples disclosed and discussed herein are not limited in this regard, the terms "plurality" and "a plurality" as used herein may include, for example, "multiple" or "two or more". The terms "plurality" or "a plurality" may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like. Unless explicitly stated, the method examples described herein are not constrained to a particular order or sequence. Additionally, some of the described method examples or elements thereof can occur or be performed at the same point in time.

[0042] Unless specifically stated otherwise, as apparent from the following discussions, it is appreciated that throughout the specification, discussions utilizing terms such as "adding", "associating" "selecting," "evaluating," "processing," "computing," "calculating," "determining," "designating," "allocating" or the like, refer to the actions and/or processes of a computer, computer processor or computing system, or similar electronic computing device, that manipulate, execute and/or transform data represented as physical, such as electronic, quantities within the computing system's registers and/or memories into other data similarly represented as physical quantities within the computing system's memories, registers or other such information storage, transmission or display devices.

An aspect of the present invention is a blade kit that includes a blade plate with one or a plurality of toothed edges and at least one tear line. The at least one tear line defining at least two parts, so as to allow separating the parts for mounting the parts on a hub and for adjusting a distance between the parts to form a saw blade with a variable width profile such that an end-user of the saw blade, e.g., a consumer, can separate the saw blade, in some embodiments of the invention; the saw blade is configured to be separated along laser etched tear lines.

[0043] An aspect of the present invention includes a user-friendly toothed plate wherein the toothed plate includes various tearable portions; the tearable portions may be separated from the plate by a user. In some embodiments of the present invention, a user may use a saw blade. Different parts, components and/or pieces of the saw blade may wear differently depending on factors including the environment, the type of material cut by the saw blade, the type of machine used to mount the saw blade, and other factors. A user may separate out one or a plurality of replacement pieces from the toothed plate for use in the saw blade, or for other utilities when a user wants to replace one or a plurality of pieces, parts, and/or components of the saw blade, for example, if one piece became more worn, dull or otherwise less useful than other pieces of the saw blade.

[0044] An aspect of the present invention includes, in some embodiments, an asymmetry, e.g., chirality and/or handedness to the separated parts such that they are optimally mounted on the hub, and are unlikely to be improperly mounted on the hub. [0045] In some embodiments of the invention, the hub may allow for the expansion of the distance between one or a plurality of the separated parts such that the expansion and/or contraction of the distance between the separated parts allows for the expansion and/or the contraction of the type of cut into a material by the saw blade.

[0046] In some embodiments of the invention, the perforations may be formed by a laser, water jet or similar cutting tool. The perforations may make up a tear line between the pre-separated pieces. The perforations may include one or more holes cut into the material of the plate, the holes configured to allow for an end-user to separate the parts of the plate, the separation resulting in pieces to be used in constructing a saw blade configured to allow for an adjustable kerf, e.g., variable width cuts or variable width kerfs.

[0047] In some embodiments of the invention, a saw may be used to make cuts in material. The cuts in material may include grooves, joints, rabbets, overlapping rabbets, sockets, double rabbets, blind rabbets, dado rabbets, dado joints, housings, trenches, slots, through dados and other cuts. A saw with a variable width kerf may be configured to optimally cut the proper width cut.

[0048] Fig. 1A is a schematic illustration of a saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[0049] A saw blade 10, configured to allow for variable width cuts, may be mounted within a saw blade assembly, e.g., on one or a plurality of hubs 20. Hub 20 may include a number of components. Hub 20 may include separable hubs that allow for the mounting of one or a plurality of saw blades.

[0050] In some embodiments of the invention, the mounting of saw blade 10 onto hub 20, in some examples, assembled at a variable distance, provides for a variable width profile of saw blade 10, allowing for variable width cuts by saw blade 10.

[0051] Coupled to hub 20 is a plurality of pieces, e.g., toothed parts of saw blade 10. In some embodiments of the invention, the pieces are coupled to the hub such that they do not all lie on the same plane. In some embodiments of the invention the plurality of pieces are of distinct and different sizes. In some embodiments of the invention, the pieces are the same size as the other pieces. In some embodiments of the invention, some pieces are of similar size and some pieces are of a dissimilar size.

[0052] In some embodiments of the invention, there may be at least two parts separated from a blade plate, including a first part includes first saw blade 30. First saw blade 30 is a part of a plate from which first saw blade 30 and a plurality of parts for saw blade 10 may be separated from and includes teeth 25, e.g., saw teeth.

[0053] First saw blade 30 is coupled to the hub by a plurality of couplers 40. The couplers may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling.

[0054] In some embodiments of the invention, a second part may include second saw blade 30. Second saw blade 50 is a part of a plate from which second saw blade 50 and a plurality of parts for saw blade 10 may be separated from and includes teeth 25, e.g., saw teeth.

[0055] Second saw blade 50 is coupled to the hub by a plurality of couplers 60. The couplers may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling.

[0056] In some embodiments of the invention, couplers 40 are positioned such that their positions mirror couplers 60 in their attachment of first saw blade 30 and second saw blade 50 to hub 20.

[0057] In some embodiments of the invention, couplers 40 may be positioned such that their positions do not mirror couplers 60 in their attachment of first saw blade 30 and second saw blade 50 to hub 20.

[0058] Saw blade 10, configured to allow for variable width cuts, may be configured to be used in a table saw, a spindle molding machine, a bench-top table saw, a contractor table saw, a cabinet table saw, a miter saw, a hybrid table saw, and/or other saw mechanisms. Hub 20 may have an interior void 70, the void configured to couple to an arbor assembly of a table saw.

[0059] In some embodiments of the invention, saw blade 10 includes third saw blade 80. Third saw blade 80 is a part of a plate from which third saw blade 80 and a plurality of parts for saw blade 10 may be separated from and includes teeth 25, e.g., saw teeth. Third saw blade 80 is coupled to hub 20.

[0060] In some embodiments of the invention, a saw blade may be a circular device containing 360 degrees. In some embodiments of the invention, a first saw blade 30 with teeth 25 may make up 90 or nearly 90 degrees of the 360 degrees of the saw blade. In some embodiments of the invention, a second saw blade 50 with teeth 25 may make up 90 or nearly 90 degrees of the 360 degrees of the saw blade. In some embodiments of the invention, a third saw blade 80 with teeth 25 may make up 180 or nearly 180 degrees of the 360 degrees of the saw blade. In some embodiments of the invention the 180 degrees of piece three may be divided into areas on either side of the circular device with the first piece and the second piece interspaced between the two areas.

[0061] In some embodiments of the invention the first, second and third part on saw blade 10 may wear differently and may be interchanged or replaced from hub 20 when necessary.

[0062] A kit may include a blade plate that includes separable saw blades, including, first saw blade 30, second saw blade 50 and third saw blade 80. The kit may also include hub 20a and hub 20b configurable to be attached such that the distance between an outer surface of hub 20a and an outer surface hub 20b can be varied via spacer rings with variable widths, and/or other methods.

[0063] Fig. 1 B is a schematic side-view illustration of a saw blade configured to allow for variable width cuts, in an open or widened position, according to an embodiment of the invention.

[0064] A saw blade 10, configured to allow for variable width cuts may be configured to be mounted on a hub 20. Hub 20 may include hub 20a and hub 20b wherein hub 20a is configured to be coupled to some portions of the saw blade and hub 20b is configured to be coupled to other portions of the saw blade.

[0065] A second saw blade 50 is coupled to hub 20a and a third saw blade 80 is coupled to hub 20b. In some embodiments of the invention, hub 20a is configured to allow second saw blade 50 to be coupled to hub 20a on a plane distinct from the plane where third saw blade 80 is coupled to hub 20b. The distance between the plane on which second saw blade 50 is coupled to hub 20a and the plane on which third saw blade 80 is coupled to hub 20b may relate to the kerf of a saw blade configured to allow for variable width cuts. The less the distance between the plane on which second saw blade 50 is coupled to hub 20a and the plane on which third saw blade 80 is coupled to hub 20b the narrower the kerf. The greater the distance between the plane on which second saw blade 50 is coupled to hub 20a and the plane on which third saw blade 80 is coupled to hub 20b the wider the kerf. The distance between the plane on which second saw blade 50 is coupled to hub 20a and the plane on which third saw blade 80 is coupled to hub 20b may be varied by one or a plurality of mechanisms, the mechanisms configured to expand the width W of hub 20. In some embodiments of the invention, width W of hub 20 is the distance between an outer surface of hub 20a and an outer surface of hub 20b. The mechanisms configured to expand the width W of hub 20 may provide for an exacting and precise expansion of W of hub 20 such that a cut in a material by saw blade 20 can be cut to exacting dimensions.

[0066] Fig. 1C is a schematic illustration of a side view of saw blade, configured to allow for variable width cuts, in a closed or narrowed position, according to an embodiment of the invention.

[0067] A saw blade 10, configured to allow for variable width cuts may be configured to be mounted on a hub 20.

[0068] Hub 20 may include hub 20a and hub 20b wherein hub 20a is configured to be coupled to some portions of the saw blade and hub 20b is configured to be coupled to other portions of the saw blade.

[0069] A second saw blade 50 is coupled to hub 20a and a third saw blade 80 is coupled to hub 20b. In some embodiments of the invention, hub 20a is configured to allow second saw blade 50 to be coupled to hub 20a on a plane distinct from the plane where third saw blade 80 is coupled to hub 20b.

[0070] In instances wherein the hub is in a narrowed position, the plane on which second saw blade 50 lies may be close to or the same as the plane on which third saw blade 80 is lying.

[0071] Fig. 2A is a schematic illustration of a saw blade for variable width cuts, configured to be separated along tear lines, according to an embodiment of the invention.

[0072] Saw blade 10 is a blade plate 15, configured to be broken into separate pieces for use as a saw blade that is configured to allow for variable width cuts.

[0073] Saw blade 10 is configured to be separated into a number of pieces including, a first saw blade 30, a second saw blade 50 and a third saw blade 80. First saw blade 30, a second saw blade 50 and a third saw blade 80 having teeth 25 for use in sawing.

[0074] In some embodiments of the invention, first saw blade 30, a second saw blade 50 and a third saw blade 80 are non identical.

[0075] In some embodiments of the invention first saw blade 30 and second saw blade 50 are identical or nearly identical.

[0076] First saw blade 30 includes coupler holes 45 for couplers, e.g., screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling, to couple first saw blade 30 to a hub, for example, the hub as described hereinabove. There may be one or a plurality of coupler holes 45. Coupler holes 45 may be threaded, the threading configured to match a coupler. Coupler holes 45 may not be threaded. Coupler holes 45 may have a diameter configured to match a coupler.

[0077] Second saw blade 50 includes holes, voids, spaces or otherwise specific coupler holes 65 for couplers to couple second saw blade 50 to a hub, for example, the hub as described hereinabove. There may be one or a plurality of coupler holes 65. Coupler holes 65 may be threaded, the threading configured to match a coupler. Coupler holes 65 may not be threaded. Coupler holes 65 may have a diameter configured to match a coupler.

[0078] The positioning of coupler holes 45 may mirror the positioning of coupler holes 65.

[0079] Third saw blade 80 includes holes, voids, spaces or otherwise specific coupler holes 90a for couplers to couple third saw blade 80 to a hub, for example, the hub as described hereinabove. There may be one or a plurality of coupler holes 90a. Coupler holes 90a may be threaded, the threading configured to match a coupler. Coupler holes 90a may not be threaded. Coupler holes 90a may have a diameter configured to match a coupler.

[0080] Third saw blade 80 includes holes, voids, spaces or otherwise specific coupler holes 90b for couplers to couple third saw blade 80 to a hub, for example, the hub as described hereinabove. There may be one or a plurality of coupler holes 90b.

[0081] Coupler holes 90b may be threaded, the threading configured to match a coupler. Coupler holes 90b may not be threaded. Coupler holes 90b may have a diameter configured to match a coupler.

[0082] In some embodiments of the invention, the positions of coupler holes 90a do not mirror the position of coupler holes 90b. The non-mirroring of coupler holes 90a and 90b may be configured such that third saw blade 80 can only be coupled to the hub in one configuration. In some embodiments of the invention, the non-mirroring of coupler holes 90a and coupler holes 90b may be configured such that teeth 25 on third saw blade 80 will be angled in a specific direction, the direction relative to teeth 25 on first saw blade 30 and/or second saw blade 30.

[0083] In some embodiments of the invention, the position of coupler holes 90a may mirror the position of coupler holes 90b. [0084] Saw blade 10 includes center void 100. Center void 100 is a hole, space or otherwise specific area for use in fitting saw blade 10 to a hub and/or to an arbor assembly.

[0085] In some embodiments of the invention, saw blade 10 includes one or a plurality of tear lines 110. Tear lines 1 10 may be laser perforated or perforated by other means. In some embodiments of the invention the perforation of tear lines 1 10 include one or a plurality of holes, the holes interspaced by bridges between the pieces of saw blade 10, on either side of tear lines 110. In some embodiments of the invention, a tear line may include a single bridge with a hole on either side, wherein breaking of the bridge will detach a piece of saw blade 10 from one or a plurality of other pieces of saw blade 10.

[0086] Tear lines 110 coincide with edges of pieces of saw blade 10. Tear lines may be configured such that an end-user can, in some embodiments easily, for example, with minimal force, and in some embodiments, with some force, and in some embodiments with a tool, separate pieces of saw blade 10 from each other. In some examples, the pieces are of saw blade 10 are manufactured to break away along tear lines, e.g., responsive to a pre -determined or given amount of force to separate from a blade plate.

[0087] Characteristics of the tear line, including thickness, width and/or length of the tear line may be related to the thickness of the original sheet of metal from which the blade plate is made, and/or other features of the blade plate and/or saw blade.

[0088] First saw blade 30 may have a perimeter defined by tear lines 110 and a border 120. Border 120 is proximate to center void 100. In some embodiments of the invention border 120 is configured to provide asymmetry to first saw blade 30. In some embodiments of the invention border 120 may be configured to provide asymmetry to first saw blade 30 with a distinct set of microstructures 125. The microstructures may be etched into saw blade 10. Microstructures 125 may include a distinct configuration of one or a plurality of peaks, valleys and other geometric designs.

[0089] The asymmetry of the first saw blade may be configured such that the first saw blade may be coupled with the hub in only a singular manner.

[0090] Second saw blade 50 may have a perimeter defined by tear lines 110 and a border 130. Border 130 is proximate to center void 100. In some embodiments of the invention border 130 is configured to provide asymmetry to second saw blade 30. In some embodiments of the invention border 130 may be configured to provide asymmetry to Second saw blade 50 with a distinct set of microstructures 135. The microstructures may be etched into saw blade 10. Microstructures 135 may include a distinct configuration of one or a plurality of peaks, valleys and other geometric designs. The asymmetry of the first saw blade may be configured such that the first saw blade may be coupled with the hub in only a singular manner.

[0091] Chirality and/or asymmetry provided by microstructures 125 and 135 may be configured such that first saw blade 30 and second saw blade 50 will not be easily transposed when coupled to a hub. A hub may be configured such that a set of microstructures 125 on first saw blade 30 will match a mirrored set of microstructures on the hub. A hub may be configured such that a set of microstructures 135 on second saw blade 50 will match a mirrored set of microstructures on the hub. First saw blade 30 may be unable to fit snugly and/or securely into the hub when the microstructures 125 cannot be aligned with mirrored microstructures on the hub. Second saw blade 50 may be unable to fit snugly and/or securely into the hub when the microstructures 135 cannot be aligned with mirrored microstructures on the hub. In some embodiments of the inventions border 120, microstructures 125, border 130 and/or microstructures 135 may provide other means of providing chirality and/or asymmetry to pieces 30 and 50, where the other means prevent or limit the ability of first saw blade 30 to optimally fit within an area designated for Second saw blade 50 and wherein the other means prevent or limit the ability of Second saw blade 50 to optimally fit within an area designated for first saw blade 30.

[0092] Chirality of first saw blade 30 and chirality of Second saw blade 50 may be configured such that teeth 25 are optimally or nearly optimally positioned.

[0093] Fig. 2B is an exploded schematic illustration of a saw blade for variable width cuts, configured to be separated along tear lines, according to an embodiment of the invention.

[0094] Saw blade 10 is configured to be separated into a plurality of pieces from an initial blade plate, including a first saw blade 30, a second saw blade 50 and a third saw blade 80. Other pieces may also be separated from the initial blade plate 15. Initial blade plate 15 includes teeth 25 and a center void 100. The center void configured to allow for one or a plurality of the pieces to be coupled to an arbor assembly of a table saw, and or other assemblies.

[0095] First saw blade 30 is configured to be separated from blade plate 15 at tear lines 110 that define one or a plurality of edges of first saw blade 30. First saw blade 30 has a border 120 that, when first saw blade 30 is not yet separated from blade plate 15, the border is proximate to center void 100. Border 120 has one or a plurality of microstructures 125, the configuration of microstructures 125 configured to provide asymmetry and/or chirality and/or an optimal fit for first saw blade 30 to a hub. First saw blade 30 may be coupled to a hub via couplers, the couplers couple first saw blade 30 at coupler hole 45. The asymmetry and/or chirality of first saw blade 30 may be configured to optimally couple first saw blade 30 to a hub such that teeth 25 are positioned in a desired configuration vis-a-vis other pieces separated from blade plate 15 and coupled to the hub.

[0096] Second saw blade 50 is configured to be separated from blade plate 15 at tear lines 110 that define one or a plurality of edges of second saw blade 30. Second saw blade 50 has a border 130 that, when second saw blade 50 is not yet separated from blade plate 15, the border is proximate to center void 100. Border 130 has one or a plurality of microstructures 135, the configuration of microstructures 135 configured to provide asymmetry and/or chirality and/or an optimal fit for Second saw blade 50 to a hub. Second saw blade 50 may be coupled to a hub via couplers, the couplers couple second saw blade 50 at coupler hole 65. The asymmetry and/or chirality of Second saw blade 50 may be configured to optimally couple Second saw blade 50 to a hub such that teeth 25 are positioned in a desired configuration vis-a-vis other pieces separated from blade plate 15 and coupled to the hub.

[0097] Third saw blade 80 is configured to be separated from blade plate 15 at tear lines 110 that define one or a plurality of edges of third saw blade 80. Third saw blade 80 has a first border 140 that, when third saw blade 80 is not yet separated from blade plate 15, the border is proximate to center void 100. Third saw blade 80 has a second border 150 that, when third saw blade 80 is not yet separated from blade plate 15, the border is proximate to center void 100. First border 140 and second border 150 may mirror each other or may be dissimilar from each other. First border 140 and second border 150 may be on opposite, near opposite sides of center void 100.

[0098] . Border 140 has one or a plurality of microstructures 145, the configuration of microstructures 145 configured to provide asymmetry and/or chirality and/or an optimal fit for third saw blade 80 to a hub. Border 150 has one or a plurality of microstructures 155, the configuration of microstructures 155 configured to provide asymmetry and/or chirality and/or an optimal fit for third saw blade 80 to a hub. Third saw blade 80 may be coupled to a hub via couplers, the couplers couple third saw blade 80 at coupler holes 90a and 90b. Coupler holes 90a and 90b may be configured such that only one orientation of third saw blade 80 will fit, fit optimally, and/or fit snuggly on the hub. The distinct orientation of coupler holes 90a with regard to coupler holes 90b may be configured to optimally couple third saw blade 80 to a hub such that teeth 25 are positioned in a desired configuration vis-a-vis other pieces separated from blade plate 15 and coupled to the hub.

[0099] Fig. 3 A is a schematic illustration of a piece of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[00100] Third saw blade 80, extracted from a blade plate that may include additional pieces of saw blade 10 is coupleable to hub 20. Third saw blade 80 is coupled to hub 20 with couplers 95a and 95b. In some embodiments of the invention, couplers 95 a and couplers 95b are configured to fit within coupler holes 90a and coupler holes 90b respectively, coupler holes 90a and coupler holes 90b as described for example, above.

[00101] In some embodiments of the invention, couplers 95a and couplers 95b are configured to couple third saw blade 80 to hub 20 optimally in only one possible orientation. The orientation such that teeth 25 are oriented in an optimal fashion. Center void 100 of third saw blade 80 is configured to line up, or nearly line up with interior void 70 of hub 20.

[00102] Fig. 3B is an exploded schematic illustration of a piece of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[00103] Third saw blade 80, extracted from a blade plate that may include additional pieces of saw blade 10 is coupleable to hub 20. Third saw blade 80 is coupled to hub 20 with couplers 95a and 95b. In some embodiments of the invention, couplers 95 a and couplers 95b are configured to fit within coupler holes 90a and coupler holes 90b respectively, coupler holes 90a and coupler holes 90b as described for example, above.

[00104] Couplers 95a may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling. Couplers 95 a are configured to fit within coupler holes 90a and couple third saw blade 80 to hub 20 via interaction with one or a plurality of bore 180. Bore 180 may be a tapped hole, or screw hole in hub. Bore 180 may be configured to optimally hold and/or retain coupler 95 a.

[00105] Couplers 95b may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling. Couplers 95b are configured to fit within coupler holes 90b and couple third saw blade 80 to hub 20 via interaction with one or a plurality of bore 170. Bore 170 may be a tapped hole, or screw hole in hub. Bore 170 may be configured to optimally hold and/or retain coupler 95b.

[00106] In some embodiments of the invention, couplers 95a and couplers 95b are configured to couple third saw blade 80 to hub 20 optimally in only one possible orientation. The orientation such that teeth 25 are oriented in an optimal fashion. Center void 100 of third saw blade 80 is configured to line up, or nearly line up with interior void 70 of hub 20.

[00107] Hub 20 may have raised portion 160. Raised portion 160 includes bores

170 and bores 180. Raised portion 160 may mirror shape and geometry of third saw blade 80. Raised portion 160 may be similar but not exactly mirror shape and geometry of third saw blade 80.

[00108] Raised portion 160 may be configurable to move closer to and/or further from non-raised portions 190 of hub 20. The movement closer to and/or further from non-raised portions 190 may allow for allow for variable width cuts using saw blade 10.

[00109] Fig. 4A is a schematic illustration of two pieces of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[00110] A saw blade configured to allow for variable width cuts includes first saw blade 30 and second saw blade 50 of a blade plate coupled to a hub 20. First saw blade 30 and Second saw blade 50 have teeth 25. First saw blade 30 and Second saw blade 50 have a plurality of edges where some of the edges are tear lines 110 from the blade plate from which first saw blade 30 and Second saw blade 50 were separated.

[00111] First saw blade 30 includes coupler holes 45. First saw blade 30 is coupled to hub 20 by a plurality of couplers 40. The couplers may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling.

[00112] Second saw blade 50 includes coupler holes 65. Second saw blade 50 is coupled to hub 20 by a plurality of couplers 60. The couplers may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling. [00113] In some embodiments of the invention, hub 20 includes void 70. Void 70 may be encircled by disc 200. Disc 200 may be, in some embodiments of the invention, configured to optimally allow for first saw blade 30 and second saw blade 50 to couple to hub 20 via the asymmetry and/or chirality of first saw blade 30 and the asymmetry and/or chirality of second saw blade 30. In some embodiments of the invention, an optimal coupling of first saw blade 30 and of Second saw blade 50 would allow for teeth 25 to be optimally aligned and/or placed with reference to other parts of saw blade 10.

[00114] In some embodiments of the invention disc 200 includes microstructures 210. Microstructures 210 are configured to mirror or nearly mirror or provide a fit for microstructures 125 on border 120 of first saw blade 30.

[00115] In some embodiments of the invention disc 200 includes microstructures 220. Microstructures 220 are configured to mirror or nearly mirror or provide a fit for microstructures 135 on border 130 of second saw blade 30.

[00116] Fig. 4B is a schematic illustration of two pieces of a saw blade coupled to a hub, the saw blade configured to allow for variable width cuts, according to an embodiment of the invention.

[00117] Saw blade 10 includes first saw blade 30. First saw blade 30 is separable from a blade plate that may include additional pieces of saw blade 10 and is coupleable to hub 20. First saw blade 30 is coupled to hub 20 with couplers 40. In some embodiments of the invention, couplers 40 are configured to fit within coupler holes 45 as described for example, above.

[00118] Couplers 40 may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling. Couplers 40 are configured to fit within coupler holes 45 and couple first saw blade 30 to hub 20 via interaction with one or a plurality of bore 230. Bore 230 may be a tapped hole, or screw hole in hub. Bore 230 may be configured to optimally hold and/or retain coupler 40.

[00119] In some embodiments of the invention, couplers 40 are configured to couple first saw blade 30 to hub 20 optimally in only one possible orientation. The orientation such that teeth 25 are oriented in an optimal fashion.

[00120] In some embodiments of the invention disc 200 includes microstructures 210. Microstructures 210 are configured to mirror or nearly mirror or provide a fit for microstructures 125 on border 120 of first saw blade 30, for example, as described above.

[00121] Hub 20 may have raised portion 250. Raised portion 250 includes bores

230. Raised portion 250 may mirror shape and geometry of first saw blade 30. Raised portion 250 may be similar but not exactly mirror shape and geometry of first saw blade 30.

[00122] Raised portion 250 may be configurable to move closer to and/or further from non-raised portions 270 of hub 20. The movement closer to and/or further from non-raised portions 270 may allow for allow for variable width cuts using saw blade 10.

[00123] Saw blade 10 includes second saw blade 30. Second saw blade 50 is configured such that it can be separated from a blade plate that may include additional pieces of saw blade 10 and is coupleable to hub 20. Second saw blade 50 is coupled to hub 20 with couplers 60. In some embodiments of the invention, couplers 60 are configured to fit within coupler holes 65 as described for example, above.

[00124] Couplers 60 may be screws, bolts, pin, cutter arbor pins, alignment pins, fasteners and/or other methods of coupling. Couplers 60 are configured to fit within coupler holes 65 and couple second saw blade 50 to hub 20 via interaction with one or a plurality of bores 260. Bores 260 may be a tapped hole, or screw hole in hub. Bores 260 may be configured to optimally hold and/or retain coupler 60.

[00125] In some embodiments of the invention, couplers 60 are configured to couple second saw blade 50 to hub 20 optimally in only one possible orientation. The orientation such that teeth 25 are oriented in an optimal fashion.

[00126] In some embodiments of the invention disc 200 includes microstructures

220. Microstructures 220 are configured to mirror or nearly mirror or provide a fit for microstructures 135 on border 130 of second saw blade 30, for example, as described above.

[00127] Hub 20 may have raised portion 240. Raised portion 240 includes bores

260. Raised portion 240 may mirror shape and geometry of second saw blade 30. Raised portion 240 may be similar but not exactly mirror shape and geometry of second saw blade 30.

[00128] Raised portion 240 may be configurable to move closer to and/or further from non-raised portions 270 of hub 20. The movement closer to and/or further from non-raised portions 270 may allow for allow for variable width cuts using saw blade 10. [00129] Raised portion 240 may be configured to move separately and/or in tandem with raised portion 50. The movement closer to and/or further of raised portions 240 and 250 from each other may allow for allow for variable width cuts using saw blade 10.

[00130] Different embodiments are disclosed herein. Features of certain embodiments may be combined with features of other embodiments; thus certain embodiments may be combinations of features of multiple embodiments. The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. It should be appreciated by persons skilled in the art that many modifications, variations, substitutions, changes, and equivalents are possible in light of the above teaching. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

[00131] While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.