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WO/2000/054905A1 |
A method of manufacturing a poly-V-grooved pulley capable of manufacturing a poly-V-grooved pulley to be put on and joined to a shaft via a one-way clutch and a bearing with a minimum steps and at a low cost, comprising the steps of form...
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WO/2000/054906A1 |
A method of manufacturing a poly-V-grooved pulley having formed therein two-stage poly-V-grooves with larger and smaller diameters, comprising the steps of forming a sectionally disc-shaped first formed body (25) having a support base pl...
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WO2000026546B1 |
The present invention is a lightweight threaded bolt type fastener (12) having a shank (21) with a large diameter portion (22) and small diameter portion (28) connected by a transition portion (26); a thread (29) is roll formed on the sm...
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WO/2000/050185A1 |
A method of manufacturing a form-rolled part using a high-hardness member, comprising a first step of forming a high-hardness member by forging into a form-rollable shape, a second step of reducing the hardness of the form-rollable forge...
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WO/2000/048760A1 |
A multi-stage forming tool (10) for densifying the outer perimeter of post-sintered powder metal preforms (36) includes a series of axially spaced die plates (12) having different size die openings (14) arranged from largest to smallest....
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WO/2000/047349A1 |
A method of forming male threads on deformed metal bars (4) to form rock bolts is disclosed. The method involves removing the deformation from an end portion of the bar by a cold rolling process that reduces the diameter (1) of the end p...
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WO/2000/043148A1 |
A wrought or powder metal gear preform (14) is mounted for rotation about a first axis (A) and driven in meshing engagement with a roll forming die (18) supported for rotation about a second axis (B) transverse to the first axis. The rol...
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WO/2000/031424A1 |
The present invention provides a novel fastener member, stud, or other threaded member (22, 22b), for engagement with a female member (26), and the method of assembly thereof. The fastener member (22, 22b) has a novel point (20, 20b) whi...
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WO/2000/025960A1 |
The invention relates to a method for producing a sintered part (1) comprised of a powdery material, especially comprised of a sintered metallurgical powder. According to the inventive method, a green compact which forms an elementary sh...
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WO/2000/021699A1 |
The invention relates to a tool for producing a gear part having external toothing using a method of shaping by compression or by rolling. Said tool comprises a receiving tool (1) for supporting the work piece (3) which is impinged upon ...
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WO/2000/018973A1 |
This method refers to a method by which the physical and mechanical properties intrinsic to a fine-grain structure may be formed in metal billets using pressure treatment. The method is designed to treat rods, bars and other particularly...
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WO/2000/016920A1 |
The invention relates to a method and a device for treating the surface of workpieces (12, 12', 12 ). According to said method the workpiece (12, 12', 12 ) is at least partly subjected to the action of a roll (16, 16', 16''', 74', 74 , 8...
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WO/2000/013817A1 |
The invention relates to a thread-forming screw (10, 20, 40, 60, 80, 100) made of a thermosetting light alloy and used as a screwing tool, whose shaft (12, 22, 44, 64, 84, 104) exhibits a thread (14, 26, 48, 70, 86, 106) with flanks. The...
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WO/2000/010742A1 |
The method includes making a fluid communication channel (44), which has a selectively variable cross-sectional area profile, in the inner face of a gas spring cylinder (32) so as to permit fluid communication at different selective rate...
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WO/2000/011358A1 |
A fastener is constructed having four thread zones (4, 5, 6, 7) constructed over the length of the fastener (1), from the head (2) to the tip (10), namely a ridged cylindrical holding zone (4), a ridged cylindrical transition thread form...
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WO/2000/003819A1 |
A full from net shape roll finished contacting machine element such as a gear (84) is produced from a near net shape workpiece (24) having a plurality of teeth (82) each with a tooth flank (86) with a nominally involute surface and a roo...
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WO/1999/067540A2 |
The present invention envisions a fastener and a blank (30) for forming a fastener. Threads are formed on the fastener blank (30) of the present invention to achieve the fastener of the present invention. The fastener and blank include a...
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WO/1999/067042A1 |
A metal forming method is used for manufacturing vehicle wheels. The invention comprises manufacturing of a wheel block comprising a central part and initially formed rim; drawing of the rim by hot rolling to obtain a wheel profile that ...
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WO/1999/064186A1 |
A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a lower end (24) for providing support thereof in an upwardly standing orientation. The base (22) includes a pair of spaced base portions...
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WO/1999/064185A1 |
A machine (20) for rolling power transmission formations in a workpiece includes a base (22) having spaced base portions (30) and a rear connecting base portion (32) extending between the spaced base portions which project forwardly ther...
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WO/1999/064184A1 |
A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a pair of spaced base portions (30), headstock and tailstock spindle supports (48, 52) that cooperate to mount the workpiece for rotation...
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WO/1999/052638A1 |
A method for debasing coins, wherein each coin is mechanically deformed by feeding the coin between at least two rolls (6, 7) or assemblies rotating in opposite directions. The coins are deformed into a corrugated shape, flattened out or...
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WO/1999/053213A1 |
This invention relates to an improved method for producing aluminum MMC rotors. The method comprises the steps of initially casting an aluminum MMC rotor casting (10) having a central pilot aperture (20), cold forming the friction sectio...
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WO/1999/047288A1 |
In a thread rolling die, which is a tool for rolling threads and the like, a primary hard film (C¿1?) with a high degree of hardness, consisting of an electrode wear melting substance or a reaction product thereof is formed on a rolling...
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WO/1999/047290A1 |
A rolling die which is a tool for roll forming a thread. An electrode consumption molten substance of a discharge electrode due to the discharge energy of gap discharge in a liquid or a reaction substance thereof is deposited on the surf...
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WO/1999/047291A1 |
A method of manufacturing a sheet metal product having a groove in an inner circumferential end surface thereof, capable of forming a groove in an inner circumferential end surface of a sheet metal work without using a cutting process; r...
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WO/1999/047289A1 |
A method of manufacturing a sheet metal product having a cylindrical portion at the inner circumferential side thereof, capable of forming a cylindrical portion (84) at the inner circumferential side of a sheet metal work (W) without usi...
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WO/1999/046521A1 |
The invention concerns a method for making a metal cylinder sleeve (6) to be used in an internal combustion engine cylinder block, said cylinder sleeve (6) internal surface having a surface structure. In order to produce said cylinder sl...
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WO/1999/043457A1 |
The aim of the invention is to improve, by way of a surface activation, the bonding of a cylinder liner mounted in the cast material of a light-alloy crankcase. To this end the surface of the cylinder liner is mechanically roughened. In ...
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WO/1999/043453A1 |
A vertical rack-type spline-forming machine (10) based on a novel slide base arrangement comprising a pair of vertical slide bases (12) structurally joined by a symmetrically arranged set of the tie bars (14). The structurally-joined ver...
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WO/1999/043818A1 |
Novel DNA sequences having a flower organ-specific promoter activity which allow the expression of a foreign gene in pistil or lodicule and thus enable genetic engineering manipulations thereof. DNA fragments having the base sequence con...
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WO/1999/043454A1 |
A vertical rack-type spline-forming machine (10) based on a novel slide base arrangement comprising a pair of vertical slide bases (12) structurally joined by a symmetrically arranged set of tie bars (14). The structurally-joined slide b...
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WO/1999/039851A1 |
A method of obtaining a circular cylinder member having excellent dimensional accuracy without requiring many machining hours and a high cost of production, comprising forming uniformly a large number of longitudinal grooves around the o...
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WO/1999/036206A1 |
The invention relates to a method for producing hollow bodies by means of cross-rolling. According to said method, a workpiece (4) rotating around a machine axis (3) of a forming machine is transformed into a hollow body by at least one ...
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WO/1999/034023A1 |
A continuous annealing furnace wherein high carbon bearing steel is subjected to spheroidizing annealing continuously, characterized in that the furnace comprises not less than two processing chambers having mutually different carburizin...
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WO/1999/032804A1 |
The invention reduces expenditure required to produce hollow cylindrical parts (5,20) with a toothed profile by means of the following process: at least one of the surfaces of a longitudinally extended semi-finished product (1) is provid...
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WO/1999/031557A1 |
A method for impressing holographic images (16) or holograms in the surface of metal objects such as aluminum cans. The surfaces of metal shims (12) and print rolls (10) bearing holograms are hardened as by coating them with thin amorpho...
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WO/1999/028070A1 |
A method of densifying a sintered powder metal article (2) by point contact (12).
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WO/1999/026785A1 |
Surface relief holograms (20) can be prepared directly in materials, such as aluminum or other hard metal substrates (30) without the need for preheating or other softening techniques. A hard holographic embossing shim (10) is prepared f...
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WO/1999/025500A1 |
Method for producing a metal strip which reduces the risk of the strip breaking over the course of a path, the strip being conveyed under stress in the strip direction and in which, in an upstream feed path of the metal strip, defects in...
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WO/1999/024191A1 |
A screw thread having a threadform comprising a ridge (21) rising from root (23) to crest (26) with the crest having two peaks (27, 28) separated by a through (29) the depth of which is less than the height of the ridge from root to cres...
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WO/1999/022890A1 |
The invention relates to a method and a device for producing a toothed wheel from a powder metal blank (1) which has been sintered and pressed with an overmeasure in the toothing area. Said blank is compacted in the area of the overmeasu...
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WO/1999/020416A1 |
A method of manufacturing a metal shaft having a fluid passage formed immediately under the surface of a metal shaft, comprising a preliminary step of forming thread grooves U-shaped in cross section in the surface of a circular column s...
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WO/1999/020415A1 |
The invention concerns a roll bending machine which, for rolling a ring-shaped part (10), comprises a forming mandrel (16), a forming wheel (16), a roll bending shell (19) corresponding to the final form required for the ring-shaped part...
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WO/1999/008009A1 |
A self-locking screw in which a deep slit is formed without requiring sophisticated machining techniques or skills, and of which the locking effect is enhanced because the flanks of the screw thread are easily deformed. A slit is cut int...
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WO/1999/007496A1 |
A pair of thread rolling dies (10, 12) for manufacturing self-piercing, self-tapping or gimlet-type screws (21) employ an off center rise and asymmetrical tip formation surfaces (54, 64) to enhance the slug removal at the tip (28) of the...
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WO/1999/003618A1 |
According to the invention, a press roller device (1) for moulding a grooved structure inside a tubular workpiece (7) has several press rollers (4, 5, 6), said press rollers rotating around a form tool (2) and being staggered axially in ...
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WO/1999/003617A1 |
A mill for producing axially symmetric parts which has a means (35, 36) for fixing the billet under process with a possibility of its rotating about its own axis, rolling rolls (1, 2, 3, 4), a working furnace (44) provided with openings ...
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WO/1998/058754A1 |
The invention relates to a method for producing a rack (5) for a rack-and-pinion steering in motor vehicles, which method consists of the following steps: a slug (18) for the rack (5) has a shape which differs from that of a regular cyli...
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WO/1998/055248A1 |
A double cup (2) for a tapered roller being has a concave intervening surface (28) between the small diameter ends of its tapered raceways (22). The cup (2) is produced by roll forming a tubular blank (40) at ambient temperature into a r...
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