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Title:
A LOAD-RATED TOOL TETHER
Document Type and Number:
WIPO Patent Application WO/2019/169449
Kind Code:
A1
Abstract:
A load-rated tool tether has a gate and a serrated surface strap integrally formed with the gate and extending from the gate. The gate has a channel therethrough between an entrance and an exit and a locking tang operably interfacing the channel between the entrance and the exit for the feed in and one-way non-releasable engagement of the strap therethrough in use. The tether has a securement ring integrally formed with the gate and extending from between the entrance and the connection edge of the gate at an angle with respect to the longitudinal axis of the channel. When the strap is tightened around a tool, the securement ring is resiliently held by the integrally formed gate secured either side thereof by the strap between the integral connection edge and the entrance in a spaced apart configuration and the undersurface bears tangentially against the tool.

Inventors:
SALISBURY, David (15 Steele Ct, Tullamarine, New South Wales 3043, 3043, AU)
Application Number:
AU2019/050205
Publication Date:
September 12, 2019
Filing Date:
March 08, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TECHNIQUE SOLUTIONS PTY LTD (15 Steele Ct, Tullamarine, Victoria 3043, 3043, AU)
International Classes:
B25H3/00; A45F5/02; B25B11/00; B25B23/00; B65D63/00
Foreign References:
GB2447489A2008-09-17
JP2017136238A2017-08-10
US20120041441A12012-02-16
Attorney, Agent or Firm:
ACTUATE PATENTS (L11 65 York St, Sydney, New South Wales 2000, 2000, AU)
Download PDF:
Claims:
Cla i ms

1. A load-rated tool tether comprising a gate and a serrated surface strap integral ly formed with the gate and extending from the gate, the gate having a channel therethrough between an entrance and an exit and a locking tang operably interfacing the channel between the entrance and the exit for the feed in and one-way non-releasable engagement of the strap therethrough in use, wherein the strap and the gate transition at an integral connection edge at an connection angle with respect to a longitudinal axis of the channel and wherein the gate has a dimension such that the entrance thereof is spaced away from the integral connection edge so as to expose an undersurface of the gate between the integral connection edge and wherein the tether further comprises a securement ring integral ly formed with the gate and extending from between the entrance and the connection edge of the gate at an angle with respect to the longitudinal axis of the channel, such that, in use, when the strap is tightened around a tool, the securement ring is resil iently held by the integrally formed gate secured either side thereof by the strap between the integral connection edge and the entrance in a spaced apart configuration and the undersurface bears tangentially against the tool.

2. A load-rated tool tether as claimed in claim 1, wh erein the securement ring lies on a securement ring plane perpendicular with respect to the longitudinal axis of the channel.

3. A load-rated tool tether as claimed in claim 1, wherein the undersurface has a dimension between the integral connection edge a nd the entrance of greater than 5 mm .

4. A load-rated tool tether as claimed in claim 1, wherein the undersurface has a dimension between the integral connection edge and the entrance of greater than 10 mm .

5. A load-rated tool tether as claimed in claim 1, wherein the undersurface is planar.

6. A load-rated tool tether as claimed in claim 1, wherein the tang has a width of greater than 5 mm .

7. A load-rated tool tether as claimed in claim 1, wherein the tang is deflectably connected from a live hinge adjacent the entrance.

8. A load-rated tool tether as claimed in claim 1, wherein the longitudinal axis is orthogonal with respect to the connection angle .

9. A load-rated tool tether as claimed in claim 1, wherein the securement ring lies on a securement ring plane and wherein the plane is in al ignment with the connection angle.

10. A load-rated tool tether as claimed in claim 1, wherein the securement ring is annular.

11. A load-rated tool tether as claimed in claim 1, wherein the securement ring comprises an outer cross-section profile and wherein the outer cross-section profile intersects a surface of the gate.

12. A load-rated tool tether as claimed in claim 11, wherein the securement ring comprises an inner cross-section profile and wherein the inner section profile meets the surface of the gate tangentially.

13. A load-rated tool tether as claimed in claim 10, wherein the securement ring comprises a thickness of greater than 3 mm .

14. A load-rated tool tether as claimed in claim 1, wherein the strap com prises an aperture therethrough.

15. A load-rated tool tether as claimed in claim 14, wherein the strap com prises a distal connection formation configured for connection with the aperture.

16. A load-rated tool tether as claimed in claim 1, further com prising a frictional engagement mem ber against the undersurface.

17. A load-rated tool tether as claimed in claim 16, wherein the frictional engagement member com prises a friction pad having integrally formed loops at edges thereof which connect about the gate.

18. A load-rated tool tether as claimed in claim 17, wherein the gate comprises side channels configured for seating the lives respectively therein.

19. A load-rated tool tether as claimed in claim 16, wherein the friction pad comprises a planar rear surface.

20. A load-rated tool tether as claimed in claim 19, wherein the friction pad comprises a curved front surface.

21. A load-rated tool tether as claimed in claim 20, wherein the curved front surface is semicylindrical about a transverse axis.

22. A load-rated tool tether as claimed in claim 16, wherein the friction pad has a dimension greater than a dimension of the undersurface such that edges thereof extend beyond the undersurface under adjacent portions of the strap.

23. A method of tool securement using the load rated tool tether of claim 1, the method comprising inserting a portion of the tool with the strap and inserting the strap through the entrance of the channel and out from the extent thereof and tightening the strap about the tool such that the strap interfaces the gate either side of thereof in a spaced apart configuration and an underside thereof bears tangentially against the tool.

Description:
A load-rated tool tether

Field of the I nvention

[1] This invention relates generally to a load rated tool tether for attachment to various types of tools for lanyard securement in use for drop prevention .

Background of the Invention

[2] Various ways of safely tethering tools exist incl uding G B 2353752 A ( LEWIS, VERNO N et al .) 07 March 2001 [here inafter referred to as D l] which discloses a lanyard retractable from a wrist cassette which attaches to a tool thereof by way of a Velcro™ strap.

[3] However, the configuration of Dl is not adequately load rated, especial ly for heavier tools such as electric power tools.

[4] US 5082156 A (BRAU N ) 21 January [hereinafter referred to as D2] discloses a configuration having a more resilient wrist strap from which a loop is connected at a proximal end thereof for engaging a tool at a distal end thereof. A clench bead sl ides towards the proximal end to tighten around the tool engage therein.

[5] However, the loop and clench bead of D2 is also not adequately load rated . Furthermore, tools, especially elongate tools, may inadvertently slip from the clench bead engagement when dropped .

[6] Whereas other configurations exist in unrelated fields, incl uding J P 2017-136238 A ( DAI ICH I VI NYL KK) 10 August 2017 [hereinafter referred to as D3] which discloses a carry handle for a shopping bag and US 2012/0041441 Al ( BERNSTEI N et al .) 16 Fe bruary 2012 [hereinafter referred to as D4] from the medical field which discloses a cable tie system for stabilising bone, tethers for tools are currently deficient in several respects.

[7] The present invention seeks to provide a load rated tool tether, which wil l overcome or substantially ameliorate at least some of the deficiencies of the prior art, or to at least provide an alternative.

Summa ry of the Disclosure

[8] There is provided herein a load rated tool tether for attachment to a tool for securement with a lanyard as is shown in Figure 2.

[9] The present tether has a particular configuration for enhanced load rating. The present tether has been designed so as to be, for exam ple, able to catch a 2.5 kg tool drop from a height of up to 1.3 m in accordance with an em bodiment.

[10] Specifical ly, the present load rated tool tether com prises a gate and a serrated surface strap integrally formed with the gate and extending from the gate. The gate has a channel therethrough between an entrance and exit and a locking tang operably interfacing the channel between the entrance and the exit for feeding in and one-way non-releasable engagement of the strap therethrough in use.

[11] Furthermore, the tether has a securement ring integrally formed with the gate and extending from the gate between the entrance and the exit and at an angle with respect to a longitudinal axis of the channel.

[12] Dissim ilarly, D 1 and D2 discloses no such device for attachment to a tool, let alone one having a gate a nd integral ly formed securement ring and strap extending therefrom . As is evident from the current state of development of the tool securement prior art, current arrangements have rudimentary non-load rated tool attachments such as clench beads and Velcro™ straps.

[13] Furthermore, D3, from the unrelated field of carrying shopping bags a nd the like, fails to disclose an integral ly formed securement ring, other than a m ushroom head engaging swivel type ha ndle which is non -load rated. This configuration of D3 is desirous for preventing twisting of shopping bags when carrying but there is no evident motivation for the integral formation of a securement ring as like the present invention.

[14] Furthermore, D4, yet also from an unrelated medical field sim ilarly fails to disclose an integra lly formed securement ring, other than a pivotally attached releasable pul l handle. The pull handle of D4 is desirous for tightening the buckle while pul ling the strap oppositely in al ignment for tightening around bone but not for attachment thereto. As such, D4 furthermore fails to disclose the securement ring of the present tether which is integra lly connected to a gate between an entrance and exit thereof and which is at an angle with respect to a channel therethrough.

[15] In em bodiments, the present securement ring may com prise an outer profile which intersects a surface of the gate, such that the securement ring and the gate are robustly integrally connected for enhanced load rating.

[16] The present tether is further characterised in l ight of the prior art in that the strap and the gate transition at an integral connection edge at a connection angle with respect to the longitudinal axis of the channel .

[17] Furthermore, the entrance is spaced away from the integral connection edge so as to expose an undersurface of the gate. The undersurface may have a width between the integral connection edge and the entrance by more than 5 m m, such as greater than 10 m m as shown in Figure 10. [18] As such, in use, when the strap is tightened around the tool, the securement ring is held firm by being integrally connected to the gate and wherein the gate is firm ly held from either side thereof by the strap by the spaced apart configuration, thereby reducing twisting of the gate or bending of the securement ring with respect to the tool, especial ly when the distal end of the securement ring is jerked, thereby enhancing the securement of the tether to the tool . Especially where the securement ring l ies orthogonally with respect to the channel (i.e. in that the securement ring lies on a securement ring plane perpendicular with respect to the longitudinal axis of the cha nnel ) , force is applied thereto may act in direct alignment with the stra p holding the gate other side thereof, further enhancing load rating jerk resistance.

[19] Furthermore, the spaced apart connection of the straps either side of the gate allow the gate to take greater tension . Furthermore, the undersurface of the gate may frictionally bear against the tool retained therein, thereby reducing slippage of the tool from the tether when dropped .

[20] In embodiments the undersurface may be planar and each adjacent portion of the strap may meet the gate orthogonal ly at substantially 90° with respect to each other and each at an angle of approximately 45° with respect to the undersurface, thereby al lowing a central contact point of the undersurface to extend towards and frictional ly engage the tool.

[21] Dissim ilarly, the configuration of D3 shows no suc h spaced apart configuration and the handle and gate body thereof would l ikely bend with respect to the object retained therein and break.

[22] Furthermore, D4 does not show a securement ring integral ly connected with a gate, let alone at an angle with respect to a channel thereof. Furthermore, the strap of D4 does not interface the gate at a connection angle with respect to the channel.

[23] In embodiments, the tool com prises a frictional engagement mem ber, such as of rubber, which interfaces between the undersurfa ce of the gate and the tool retained within the tether. The frictional engagement mem ber may com prise a friction pad com prising side loops which releasably seat within edge channels of the gate. The friction pad may com prise a planar rearward surface which interfaces fl ush with the corresponding planar undersurface of the gate. Flowever, the inner face of the friction pad may be substantial ly cyl indrical so as to engage around cylindrical objects such as tool handles.

[24] The friction pad may com prise edges whic h extend beyond the undersurface in alignment with the strap so as to enhance the frictional engagement either side of the undersurface. Furthermore, the edges may bend to conform with the profile of the tool and may even lie substantial ly flat when pressed against a tool of relatively large diameter.

[25] According to one aspect, there is provided, a load-rated tool tether com prising a gate and a serrated surface strap integral ly formed with the gate and extending from the gate, the gate having a channel theret hrough between an entrance and an exit and a locking tang operably interfacing the channel between the entrance and the exit for the feed in and one way non-releasable engagement of the strap therethrough in use, wherein the strap and the gate transition at an integral connection edge at an connection angle with respect to a longitudinal axis of the channel and wherein the gate has a dimension such that the entrance thereof is spaced away from the integral connection edge so as to expose an undersurface of the gate between the integral connection edge and wherein the tether further com prises a securement ring integrally formed with the gate and extending from between the entrance and the connection edge of the gate at an angle with respect to the longitudina I axis of the channel, such that, in use, when the strap is tightened around a tool, the securement ring is resiliently held by the integrally formed gate secured either side thereof by the strap between the integral connection edge and the entrance in a s paced apart configuration and the undersurface bears tangentially against the tool.

[26] The securement ring may lie on a securement ring pla ne perpendicular with respect to the longitudinal axis of the channel .

[27] The undersu rface may have a dimension between the integral connection edge and the entrance of greater than 5 m m .

[28] The undersu rface may have a dimension between the integral connection edge and the entrance of greater than 10 m m .

[29] The undersurface may be planar.

[30] The tang may have a width of greater than 5 mm .

[31] The tang may be deflectably connected from a live hinge adjacent the entrance.

[32] The longitudinal axis may be orthogonal with respect to the connection angle.

[33] The securement ring may lie on a securement ring plane and the plane may be in alignment with the connection angle.

[34] The securement ring may be annular.

[35] The securement ring may com prise an outer cross -section profile and the outer cross-section profile intersects a surface of the gate.

[36] The securement ring may comprise an inner cross -section profile and the inner section profile meets the surface of the gate tangentially. [37] The securement ring may com prise a thickness of greater than 3 m m .

[38] The strap may com prise an aperture therethrough.

[39] The strap may com prise a distal connection formation configured fo r connection with the aperture.

[40] The tether may further comprise a frictional engagement mem ber against the undersurface.

[41] The frictional engagement mem ber may com prise a friction pad having integral ly formed loops at edges thereof which connect about the gate.

[42] The gate may com prise side channels configured for seating the lives respectively therein.

[43] The friction pad may com prise a planar rear surface.

[44] The friction pad may com prise a curved front surface.

[45] The curved front surface may be sem icyl indrical abou t a transverse axis.

[46] The friction pad may have a dimension greater than a dimension of the undersurface such that edges thereof extend beyond the undersurface under adjacent portions of the strap.

[47] According to another aspect, there is provided a method of tool securement using the load rated tool tether of claim 1, the method com prising inserting a portion of the tool with the strap and inserting the strap through the entrance of the channel and out from the extent thereof and tightening the strap about the tool such that the strap interfaces the gate either side of thereof in a spaced apart configuration a nd an underside thereof bears tangential ly aga inst the tool .

[48] Other aspects of the invention are also disclosed.

Brief Description of the Drawings

[49] Notwithstanding any other forms which may fal l within the scope of the present invention, preferred em bodiments of the disclosure wil l now be described, by way of exam ple only, with reference to the accom panying drawings in which :

[50] Figure 1 il lustrates a load rated tool tether fastened to a wrench;

[51] Figure 2 il lustrates the load rated tool tether fastened to a power dril l and secured by a carabiner and lanyard therethrough;

[52] Figure 3 shows a cross-sectional view of the tether with a strap thereof fed therethrough in o ne-way nonreleasable engagement;

[53] Figure 4 shows a top plan view of a proximal end of the tether; [54] Figure 5 shows a cross-sectional view of the proximal end of the tether;

[55] Figure 6 shows a top perspective view of the proximal end of the tether;

[56] Figure 7 shows a bottom perspective view of the proximal end of the tether;

[57] Figure 8 shows a top plan view of the tether with exem plary dimensions in accordance with an em bodiment; and

[58] Figure 9 shows a side cross-sectional view of the tether with exem plary dimensions in accordance with an em bodiment; and

[59] Figure 10 shows a side view of the tether with exem plary dimensions in accordance with an em bodiment

Description of Embodiments

[60] A load rated tool tether 100 com prises a gate 101, a securement ring 102 integral ly formed therewith and extending from the gate 101. The tether 100 further com prises a serrated surface strap 103 integral ly formed with the gate 101 and extending from the gate 101.

[61] The gate 101 has a channel 104 therethrough between an entrance 105 and exit 106 and a locking tang 107 operably interfacing the channel 104 between the entrance 105 and the exit for the feed in and one-way non-releasable engagement of the strap 103 therethrough in use in the manner shown in Figure 3.

[62] The tether 101 is designed for sec ure attachment the various tools, such as the wrench as shown in Figure 1 or the power dril l shown in Figure 2.

[63] The strap 103 may com prise serrations 108 at an inner surface thereof which catch against corresponding serrations 109 of the tang 107. As is sh own in Figure 5, the tang 107 may be integrally formed and pivotable about a l ive hinge 110 so as to interfere with the channel 104 yet be deflectable as the strap 103 passes from the entrance 105 to the exit 106. As is best seen in Figure 5, the channel 104 may narrow slightly at the tang 107. The exit 106 may com prise an overhang 130 which may guide the strap 103 therefrom .

[64] With reference to Figure 3, the strap 103 and the gate 101 transition at an integral connection edge 111 at an angle 112 with respect to a longitudinal axis 113 of the channel 104.

[65] The gate 101 has a tangential dimension 114 (i.e. between the entrance 105 and the connection edge 111) such that the entra nce 105 is spaced away from the integral connection edge 111 so as to expose a n undersurface 115 of the gate 101. The tangential dimension 114 may, for exam ple, be between 15 and 20 mm . With reference to an em bodiment shown in Figure 10, the tangential dimension may be approximately 17 mm .

[66] The undersurface 115 may com prise a tangential dimension of greater than 5 m m . According to the em bodiments of Figure 10, the undersurface may com prise a tangentia l of greater than 10 mm such as approximately 11 m m as shown.

[67] As such, when the stra p 103 is tightened around a to ol in use in the man ner shown in Figure 1 or 2, the strap 103 interfaces the gate 101 in a spaced a part configu ration between the integral connection edge 111 and the entrance 105 and the undersurface bears tangential ly aga inst the tool .

[68] With reference to Figure 3, the securement ring 102 may lie on a plane 116 and the connection angle 112 may be substantial ly tangential with the plane 116.

[69] Furthermore, the longitudinal axis 113 of the channel 104 may be substantially orthogonal with the connection angle 112 and the plane 116.

[70] With reference to Figure 4, the securement ring may be substantial ly annular. With reference to Figure 4, the securement ring 102 may have an outer cross-section 117 which intersects an upper surface 118 of the gate 104. Furthermore, t he securement ring 102 may com prise an inner cross-section profile 119 which similarly intersects the upper surface 118 or meets the upper surface 118 tangential ly as is shown in Figure 4.

[71] The securement ring 103 may com prise a cross-sectional width of greater than 3 m m or approximately 4 m m as shown in Figure 8. The securement ring 102 may com prise an inner diameter of greater than 15 m m or approximately 18 m m as shown in Figure 8.

[72] Furthermore, the strap 103 may com prise a width of greater than 10 mm, such as approximately 15 m m as shown in Figure 8 and the tang 107 may com prise a width of greater than 5 mm such as approximately 9 m m as shown in Figure 8.

[73] In em bodiments, the strap 103 may com prise a n aperture 120 as shown in Figu re 8. In use, a tool such as a screwdriver may be engaged therethrough to apply leverage to tighten the strap. When sufficient force is applied, the strap 103 may break apart at the break apart aperture 120 leaving a stub conveniently shortened without cutting using scissors or knives.

[74] In em bodiments, the distal end of the strap 103 may com prise an arrowhead formation 121 which may engage within the aperture 124 form ing a loop within the strap 103 at a distal end thereof.

[75] With reference to the em bodiment shown in Figure 2, the aperture 120 may com prise a widened portion 121 towards a proximal end of the strap 103 which may fit the width of the arrowhead 121 therethrough and a narrow portion 123 towards a distal end thereof which accom modates the neck of the arrowhead 121 therethrough but which is narrower than the width of the arrowhead 121.

[76] With reference to Figu re 3, the connection angle 112 and the longitudinal axis 113 of the channel 104 may be substantial ly orthogonal such that adjacent sides of the strap 103 engage the gate 101 in a spaced apart configuration at an angle of approximately 90° therebetween .

[77] In the em bodiments shown in Figure 3, the undersurface 115 may be planar and may be angled at approximately 45° with respect to the connection angle 112 and the channel axis 113.

[78] With reference to Figure 6 and 7, there is shown an em bodiment wherein the tether 101 com prises a frictional interface mem ber 124 which may com prise a friction pad 125 which frictionally interfaces between the undersurface 115 and the tool engage therein. Sides of the pad 105 may be retained by loops 126 that run through accom modating side channels 127 of the gate 101 as is more clearly shown in Figure 4.

[79] The friction pad 125 may com prise a planar rear surface so as to lie fl ush against the undersurface 115 of the gate 101. The friction pad 125 may com prise a curved face 129 being sem icylindrical a long a widthwise axis of the gate 101.

[80] The friction pad 125 may com prise edges 128 which extend beyond the undersurface 115 so as to l ie flat and increase the contact area against tool portions of larger diameters.

[81] The foregoing description, for purposes of expla nation, used specific nomenclature to provide a thorough u nderstanding of the invention. Flowever, it will be apparent to one skil led in the art that specific details are not required in order to practi se the invention. Thus, the foregoing descriptions of specific em bodiments of the invention are presented for purposes of ill ustration and description. They are not intended to be exhaustive or to lim it the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The em bodiments were chosen and described in order to best explain the principles of the invention and its practical applicatio ns, thereby enabling others skilled in the art to best util ize the invention and various em bodiments with various modifications as are suited to the particular use contem plated. It is intended that the fol lowing claims and their equivalents define the scop e of the invention.