| Patents for B21K 1 - Making machine elements (7,621) |
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| 10/25/1988 | CA1243513A1 Method of making a multigrip fastener and fastener made thereby |
| 10/18/1988 | US4778318 Self-locking blind fastener |
| 10/04/1988 | CA1242601A1 Assymetrically shaped thread forming screw and method of making same |
| 09/28/1988 | EP0284114A2 Improved extraction device associated with the extrusion pin in a machine for the production of wholly tubular rivets |
| 09/28/1988 | EP0283669A2 Method of making a screw with a cross-slotted head |
| 09/27/1988 | US4773248 Process for manufacturing a part having a tooth profile and boss |
| 09/22/1988 | WO1988006931A1 Process and apparatus for forging one piece track roller rim |
| 09/21/1988 | EP0210268B1 Transition pieces |
| 09/13/1988 | US4770572 Press for manufacturing helical gears |
| 09/06/1988 | US4768369 Method of forming a pipe fitting |
| 09/06/1988 | US4768368 Tool for and method of making hollow articles |
| 09/06/1988 | US4768268 Method for manufacturing a single-piece type valve sleeve |
| 09/06/1988 | CA1241532A1 Method of forming a precision ball track |
| 08/31/1988 | EP0280467A1 Method for providing valve members having varied microstructure |
| 08/25/1988 | WO1988005991A2 Fixing device and method for the manufacture of same |
| 08/25/1988 | DE3704946A1 Method for the production of rod-shaped bodies with at least one thickened end portion at one end and a device for carrying out the method |
| 08/24/1988 | EP0279014A1 Process for manufacturing rod-shaped articles having at least one protruding end at one side |
| 08/24/1988 | EP0279013A1 Process and device for manufacturing shafts with a protruding end |
| 08/24/1988 | EP0279012A1 Process and device for manufacturing the head of a poppet valve |
| 08/24/1988 | CN88100761A Method for producing ring gears for heavy duty drive axles |
| 08/17/1988 | EP0278361A2 Method for producing ring gears for heavy duty drive axles |
| 08/17/1988 | EP0278306A2 Method for producing a family of forged ring rolling preforms and forging die therefor |
| 08/17/1988 | EP0278298A2 Method for producing near net ring gear forgings |
| 08/10/1988 | EP0277759A1 Break-stem blind rivet |
| 08/10/1988 | EP0277269A1 Process for manufacturing a part having a tooth profile and boss |
| 08/09/1988 | US4762302 Valve sleeve and method of manufacturing same |
| 08/09/1988 | US4761873 Method of manufacturing a hose stem for hydraulically loaded friction fittings or threaded fittings |
| 08/09/1988 | US4761867 Method for producing ring gears for heavy-duty drive axles |
| 07/27/1988 | EP0275561A2 Method and apparatus for making bevel gears |
| 07/19/1988 | US4758203 Metal cruciform journal forging and method of making such a forging |
| 07/14/1988 | DE3713191C1 Method for the manufacture of a forged head of a two-part piston for internal combustion engines |
| 07/13/1988 | EP0274224A1 Loading a segmented die and ejecting a component formed therein |
| 06/28/1988 | US4752995 Manufacture of pistons |
| 06/22/1988 | EP0272067A2 Process and apparatus for upset forging of long stands of metal bar stock |
| 06/16/1988 | WO1988004207A1 Loading a segmented die and ejecting a component formed therein |
| 06/15/1988 | EP0270538A1 Tool for and method of making hollow articles. |
| 06/07/1988 | US4748707 Production of threaded metal rods for making U-bolts |
| 06/07/1988 | CA1237576A1 Method for machining clutch gear for automobile transmission |
| 06/01/1988 | DE3639739A1 Method and apparatus for the production of a cup-shaped product with internal toothing |
| 05/31/1988 | US4747431 Integral joint forming of work-hardenable high alloy tubing |
| 05/17/1988 | US4744502 Process for the production of tri-metallic contact rivets |
| 05/17/1988 | US4744119 Method of making a two-piece capped lug nut |
| 05/10/1988 | CA1236425A1 Method of forming a metal part having an annular flange |
| 05/04/1988 | EP0265919A1 Light-weight engine valve and method of producing the same |
| 05/03/1988 | US4741080 Process for providing valve members having varied microstructure |
| 04/28/1988 | DE3635677A1 Cut-off and die turret subassembly with accurate angle pitch as a forming unit for metal parts |
| 04/27/1988 | EP0189447B1 Forging process |
| 04/26/1988 | US4739644 Process for forming internal gear profile cup-shaped member and apparatus therefor |
| 04/20/1988 | CN86107673A Technology for making groove-type cages of roller bearing |
| 04/12/1988 | US4736481 Method of manufacturing screw fasteners |
| 04/07/1988 | DE3631607A1 Method for the production of a camshaft |
| 03/30/1988 | CN85106018B Combination process for casting and forging of connecting rod |
| 03/29/1988 | US4733798 Method and apparatus for controlling the concentration of a chemical solution |
| 03/22/1988 | US4732030 Method of manufacturing gear-shift lever and the lever constitution |
| 03/02/1988 | CN87105340A Method for manufacturing piston rings |
| 02/16/1988 | US4725175 Groove point screw |
| 02/16/1988 | US4724694 Method of manufacturing a thread-forming screw |
| 02/02/1988 | US4722216 Radial forging method |
| 02/02/1988 | US4722107 Methods and apparatus for making screws having a drill section and a reamer section |
| 01/26/1988 | US4720899 Method of manufacturing scroll members for use in a rotary compressor |
| 01/14/1988 | DE3720895A1 Moulding press |
| 01/07/1988 | EP0251700A2 Blind fastener with self-locking collar |
| 01/07/1988 | DE3720734A1 Method for the reconditioning of used steel screws |
| 12/29/1987 | US4716268 Method and apparatus for producing bimetallic contacts, especially bimetallic welded contacts |
| 12/29/1987 | US4715210 Method for making steering rack bars |
| 12/23/1987 | EP0250312A1 Method of making pinions of which the tooth-driving surfaces form a sharp-edged angle |
| 12/23/1987 | EP0249992A1 Spur gear manufacturing process |
| 12/17/1987 | DE3619783A1 Apparatus for the production of drive projections on the legs of a bottom strap for a clamped connection in underground yielding arch support |
| 12/16/1987 | CN87102982A Tool ring, method of making it, and holding tool for use in the performance of the method |
| 12/15/1987 | US4712411 Apparatus for making a forged metal article |
| 12/01/1987 | US4709574 Machine for cold forming small tubular elements |
| 11/26/1987 | DE3617339A1 Screw, covering cap for the screw and punch for producing the screw |
| 11/19/1987 | DE3709494A1 Piston rod for telescopic damper |
| 11/17/1987 | US4707034 Hub sleeve for a bicycle hub |
| 11/17/1987 | US4706487 Method of manufacturing a valve sleeve |
| 11/11/1987 | EP0244648A1 Method and apparatus for making toothed wheels |
| 11/10/1987 | CA1229004A1 Forging process for superalloys |
| 11/03/1987 | US4703546 Method and apparatus for forming valve cores |
| 11/03/1987 | US4703544 Method of manufacturing a rotor for hydraulic rotary valve |
| 10/29/1987 | DE3612893A1 Method and forging die for manufacturing universal joint halves with in each case fork and shaft connection flange for universal joint shafts |
| 10/27/1987 | US4702152 Method of manufacturing an ignition file for a lighter |
| 10/20/1987 | US4700446 Forging process |
| 10/20/1987 | CA1228253A1 Method and apparatus for forging of crankshafts in presses |
| 10/20/1987 | CA1228223A1 Die and method for splining thin-wall power transmitting members |
| 10/13/1987 | US4699552 Blind fastener |
| 10/06/1987 | CA1227668A1 Poly-v grooved pulley and method of making same |
| 09/22/1987 | US4694676 Method of manufacturing tri-pot universal joint housings |
| 09/16/1987 | EP0236797A2 Method and apparatus for forming valve cores |
| 09/15/1987 | US4693138 Cam shaft with expanded hollow shaft |
| 09/15/1987 | US4693104 Process for manufacturing a single piece aluminum alloy wheel rim for vehicle tires |
| 09/02/1987 | EP0234578A1 Method of manufacture of manifolds and manifold provided by such method |
| 09/01/1987 | US4689984 Method for producing male conical threads |
| 09/01/1987 | US4689983 Method for producing worm shaft for use in power steering apparatus |
| 09/01/1987 | US4689864 Method of making valve sleeves |
| 08/25/1987 | US4688312 Fuel injection valve having an end flange formed by plastic working and its method of manufacture |
| 08/19/1987 | EP0232257A1 Process for the production of flanges or collars on hollow parts by lateral extrusion. |
| 08/05/1987 | EP0230731A1 Method of making a cam shaft |
| 08/04/1987 | US4683630 Method for manufacturing an integrated wheel |
| 07/28/1987 | US4682381 Spike forming method |
| 07/21/1987 | US4680846 Material saving method for truing track wheels |