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Patent Searching and Data


Matches 651 - 700 out of 9,013

Document Document Title
WO/1994/013965A1
A threaded fastener (12) that self locks as it is tightened to a fastened object (14). The thread (30) includes one or more portions (48) that are shifted, resulting in one or more discontinuities in the thread (30). Each shifted portion...  
WO/1994/011183A1
A method of making a perforated tubular member by supporting a thin stainless tube (10) on a mandrel; machine engraving funnel-shaped holes (12) through the tube (10) and removing the machine-engraved tube from the mandrel. An alternate ...  
WO/1994/009928A1
Disclosed in this invention is a method of manufacturing poly-V-grooved pulleys readily made of sheet metal, in which said pulley is manufactured through such steps that: a slotting roller (2) is pressed to the outer periphery of a disk-...  
WO1993016824A3  
WO/1994/007619A1
A hollow bar (3) and a method of manufacturing the hollow bar are disclosed. Typically, the hollow bar is a threaded rock bolt or a drill rod. The hollow bar (3) comprises two or more elongate members (21a, 21b) connected together along ...  
WO/1994/006581A2
The object of the invention is a process for manufacturing a formed body made by pressing or deep-drawing and having different wall thicknesses from an initially flat sheet metal part. Such a formed body, for example a beam (1), having a...  
WO/1994/006579A1
In a continuous screw conveyor or auger, the rotatable screw member (12) comprises a helical radial blade (28) (known as "flighting") which is preferably carried on a central driving shaft (26). The flighting (28) is formed by rolling a ...  
WO/1994/005446A1
A rolling device for producing corrugated workpieces made of a metallic material has two flat jaws which can be synchronically moved towards each other in parallel planes, tangentially to a workpiece revolving around its longitudinal axi...  
WO/1994/004304A1
An apparatus and method are provided for the thermomechanical net shape finishing of precision gear tooth surfaces by controlled deformation into the metastable austenitic condition. To this end, an arrangement of a fixed axis through-fe...  
WO/1993/025789A1
A rotary body (14) having an eccentric reception bore (16) for receiving a bearing journal or a pivot pin is rotatively adjustable in a bore (12) of a bearing block (10). An adjusting screw (22) is transversely arranged to the bearing bo...  
WO/1993/024257A1
Procedure for making a screw thread on a corrugated bar, in which procedure the thread is made on one end of the corrugated bar (7), in which procedure the end of the corrugated bar (7) is expanded by battering so that the cross-sectiona...  
WO/1993/023576A1
Apparatus for effecting domain refinement of electrical steels comprises an assembly of an array of rotatable members (2) mounted within a supporting structure (3) and movable into direct contact with the surface of a strip or sheet of e...  
WO/1993/016824A2
A method of forming a toothed wheel comprising the steps of cold-forming a circular piece of sheet metal of predetermined thickness into a preform, rotating (1) a rotary holding unit with the preform secured thereto about the preform axi...  
WO/1993/013891A1
A method of forming a boss part sufficient in thickness and assured of a height of projection even when reduced in diameter, without excessively reducing the thickness of the metallic material and with the use of a small press, in which,...  
WO/1993/010964A1
A grooved seal is formed by pressing a groove former (6) into an end face (5) of a seal blank and causing relative motion between the blank and the former (6). The former (6) takes the form of a rotatably mounted wheel held in a holder (...  
WO1992020474A3  
WO/1993/003296A1
When a bearing (5) has to be mounted on a shaft (1) provided with an endless screw (3), so that the diameter of the bearing section (4) is larger than the outer diameter of the screw, not only the screw (3) but also the bearing section (...  
WO/1992/020474A2
The device and the method of the invention relate to the cold-forming by rolling of revolution parts (7). The device is comprised of two similar serrated rollers (9A, 9B) arranged symetrically with respect to the part to be formed (7), a...  
WO/1992/014565A1
For the manufacture of rotationally symmetrical workpieces such as wheels or pulleys, it is proposed that two tools be displaced relative to the workpiece, or $i(vice versa), in a direction tangential to the workpiece. The point at which...  
WO/1992/013659A1
A method for preparing rings (120) having an integral stiffening geometric pattern. The method incorporates unique tooling for providing the pattern, preferably comprising a plurality of segments (10) which fit together to define a ring,...  
WO/1992/010688A1
A masonry fixing device (1) comprises a steel shank (2) which in the form of the blank is right circular cylindrical form. A ridge-groove-ridge configuration extends helically along the lower portion (4) of shank (2) and comprises a pair...  
WO/1992/009535A1
Oxide dispersion strenghtened metals (2) are formed into a profiled member (6) by a ring rolling process and are then employed as a spinner (6C) in the manufacture of fibrous glass. Sufficient hot working and annealing are provided to de...  
WO/1992/008559A1
Described is a method of manufacturing a gasket, in which, before the gasket is fitted, a three-dimensional sealing surface is permanently formed on at least one side of the gasket complementary to deflection of the sealing surface in al...  
WO/1992/008916A1
Described is a gasket, in particular a cylinder-head gasket, made of a pressure-resistant, non-deformable material. Unlike prior art gaskets, the gasket described is permanently pre-formed before it is fitted, so that the gasket sealing ...  
WO/1992/005897A1
A gear wheel is formed from a pressed and sintered powder metal blank (2) by surface hardening the tooth, root and flank regions to establish densification in the range of 90 to 100 per cent to a depth of at least 380 microns.  
WO/1992/002319A1
The invention relates to plastic working of metal. The proposed rolling mill comprises a stand (2) consisting of a three-dimensional multisectional trapezoidal structure and a unit for adjusting the gap between the support plates (3 and ...  
WO/1992/002318A1
The invention relates to plastic working of metal. The proposed rolling mill comprises a stationary secured plate (2) with a wedge instrument (3), at least one supporting element (5) and driven carriages (6) which are mounted in the supp...  
WO/1992/001523A1
A method of producing component parts of a fluid chamber wherein the peripheral portion of a steel plate (1) held by a pair of rotary molds is thickened using a roller prior to and for the purpose of forming a seal ring groove (14) in th...  
WO/1992/001165A1
A screw having a main thread (2) to be screwed-in and a sub-thread (3) formed in the direction opposite to the main thread, which is characterized in that a slant surface (3b) of said sub-thread on the screw-loosening side has a sharp sl...  
WO/1991/019059A1
There is disclosed a reinforcing element (10) for reinforcing a solidified fluid mass such as concrete or refractory comprising an elongate shank (12) having a slot (18) extending along at least a portion of the length of the shank. The ...  
WO/1991/018694A1
The invention relates to processing of metals by forging. The proposed line for cross-wedge rolling comprises a mechanism (5) for transmitting the blanks (2) from a heater (3) and placing them under the wedge instruments (18 and 19) of a...  
WO/1991/018693A1
Rotationally symmetrical workpieces (19) are extruded by applying an axial forming force by means of a forming die (1). The die in which the workpiece (19) is formed consists of two ring halves (17, 18) through which the radial forming f...  
WO/1991/012445A1
The side walls of cold-formed pistons for hydraulically operated brakes can be distorted if the forces acting on the piston head are large enough, the piston wall flexing outwards or inwards. The invention describes a piston (1), designe...  
WO/1991/006384A1
A spin molding apparatus, in which a heating means (7) is operatively connected to a pressure spatula (6) with a material (4) to be molded set on a mandrel (3), the material (4) being heated to a predetermined temperature with the heatin...  
WO/1991/000785A1
This invention relates to a sheet metal poly-V-groove-pulley consisting of a cup-shaped material (3) having a circumferential wall (5) formed integrally with and extending at right angles from an end portion of a bottom wall (6), a poly-...  
WO/1990/015679A1
In order to roll a taper on a workpiece, the gap between the rolls of a rolling mill is adjusted during the rolling. A transducer is provided to indicate the extent of the gap between the rolls and, from time to time, the rolls are broug...  
WO/1990/015678A1
When deforming an elongate workpiece (A), as by forging, rolling, or the like, it is necessary to know the exact position of the workpiece along its length with respect to the deforming means. To this end, one end of the workpiece (A) is...  
WO/1990/012175A1
According to a process for the manufacture of a framework (1) for reinforcing concrete structures and, in particular, concrete slab or shell structures in the form of a steel strip (3) with notched or goffered surfaces, a hot laminated s...  
WO/1990/009250A1
A regular or irregular toothed profile or similar is shaped on a pot-shaped sheet metal blank (rough pot) by means of a pair of profiled wheels. To this end, the rough pot is placed in a play-free manner on a spur-toothed wheel with a ne...  
WO/1990/006856A1
According process for automatically matching at least two substantially cylindrical surfaces, engaging each other, particularly for mechanical emboss engraving, the freedom ranges, of a conventional machine, are mechanized and subjected ...  
WO/1990/003233A1
A metal sheet (10) is pre-treated by passing it between two ironing rolls (4, 5) to plastically strain elongated narrow zones thereof in a manner causing localised elongation thereof. Subsequently the sheet is roll-formed to produce fold...  
WO/1990/002315A1
An optical metrological scale (110) is produced by a rolling method, to give a profiled upper scale surface (109) which is imparted by an embossing roller (101). To prevent uneven strains, which could affect the pitch of the scale, the s...  
WO/1989/010805A1
A wire straightener (16) and multiple preform rollers (20) prepare a continuous length wire (14) for further forming by multiple form rollers (24) having multiple spaced apart notches (117) formed in an annular edge (118) of the rollers ...  
WO/1989/005203A1
The invention concerns a device for shaping a pulley blank, in particular for making poly-V profiles. A sheet metal object is surrounded by an annular tool (7) mounted eccentrically on an inner cam located on an outer cam (14). The outer...  
WO/1989/000899A1
A method of making workpieces, for example springs with few leaves, consists in placing a heated workpiece (1) on a calibration die (2) and feeding it into a deformation zone to form an article of a desired profile, the deformation being...  
WO/1988/003450A1
A method for producing the rack of variable ratio rack-and-pinion steering arrangements in which a uniformly toothed pinion meshes with a non-uniformly toothed rack. The rack has a central section (7) of uniform pitch and tooth shape fla...  
WO/1988/002287A1
An apparatus, based on a conventional lathe, for the screening of ink transfer rollers including a rotatable screen forming tool (45) rotatably held above the ink transfer roller (9) by a pivoted arm (26). The arm (26) pivots about an ax...  
WO/1988/001917A1
Since conventional cross roll forging is carried out at a high temperature, decarburization occurs in a chemical reaction due to thermal oxidation, so that the work must be subjected to post-processing. Since, however, the present proces...  
WO/1987/007435A1
A battery receptacle for selectively and alternately receiving a lithium battery (11) which has positive and negative terminals (13) on a first end face (9), and alkaline-manganese batteries (21), each of which includes positive (22) and...  
WO/1986/006443A1
A downhole screw motor comprises a casing (1) containing inside it working organs consisting of two elements: an external one which is made as a bushing (2) with inner spiral teeth (2'), and an internal one which is made as a shaft (3) p...  

Matches 651 - 700 out of 9,013