Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21K - Making forged or pressed products, e.g. horse-shoes, rivets, bolts, wheels › B21K 1 - Making machine elements
Patents for B21K 1 - Making machine elements (7,621)
08/2003
08/06/2003CN2564282Y Bolt shaping mould
08/06/2003CN1433900A Technological method for raising toughness and hardening layer depth of heavy truck axle shaft
08/06/2003CN1116942C Cold-squeeze technology for making regulating screw bolt with hot rolled circular steel without cutting
08/05/2003US6601428 Method for producing a gear rack, and a stamping device for carrying out the method
07/2003
07/31/2003WO2003062652A1 Method of cold forming a self-attaching female fastener element
07/31/2003CA2471824A1 Method of cold forming a self-attaching female fastener element
07/30/2003EP1331052A2 Production method of cam lobe piece of assembled camshaft
07/30/2003EP1330320A1 Method and device for the production of a workpiece with internal toothing, in particular a hollow wheel
07/29/2003US6599467 Process for forging titanium-based material, process for producing engine valve, and engine valve
07/24/2003WO2003060351A1 Differential side gear and the production method thereof
07/23/2003EP1091817B1 A tool ring and a nail machine comprising such tool ring
07/23/2003CN1115212C Process for processing square bar stud bolt
07/22/2003US6596959 Method of manufacturing a welding stud
07/17/2003US20030133747 Method for securing a rod-shaped part in a holding member, a threaded rod and use thereof
07/17/2003US20030131644 Method for producing a torsional vibration damper housing, especially a housing for a viscosity torsional vibration damper
07/16/2003EP1327089A1 Multi-axially forged piston
07/15/2003US6591657 Method of manufacturing ball joint
07/10/2003WO2003055620A1 Method for manufacturing universal joint yoke, forging die and preform
07/10/2003US20030130048 Hub member and shaft journal assembly and method
07/08/2003US6588293 Hollow rack shaft
07/03/2003WO2003054399A1 Ball-and-socket joint
07/02/2003EP1322852A1 Piston for internal combustion engine
07/02/2003CN2558481Y Multi-station automatic bolt cold-heading machine
07/01/2003US6584822 Method for working a workpiece
06/2003
06/25/2003EP1321204A2 Method of making motor vehicle parts
06/25/2003EP1321199A2 Method for preparing ultra-fine grain titanium and titanium-alloy articles and articles prepared thereby
06/25/2003CN1426516A Method for producing torsional vibration damper housing, especially housing for viscosity torsional vibration damper
06/25/2003CN1112524C Component for connecting with crank shaft and its manufacturing method
06/19/2003US20030111147 Homogenizing by stirring; metal working; aerospace structural components such as fasteners
06/19/2003US20030111143 Flattened U-bolt and method
06/18/2003EP1009558B1 Joining metal components
06/12/2003US20030108384 Polygonal interface between driving and driven components
06/12/2003DE10151585C1 Wire shaping system for manufacture of polygonal-shaped steel shot for use in sporting shotguns involves rolling to square-section, cutting to form cubes and then partial rounding to make polygonal shape
06/11/2003EP0958456B1 Blind rivet and method of making same
06/11/2003CN1111112C Production method of ball valve
06/11/2003CN1111103C Method for forming fan-shape polygon frame forge piece
06/11/2003CN1111102C Making method and improved structure of ball valve seat
06/10/2003US6575009 Mandrel insertion type metal forming of rack bar
06/05/2003US20030101788 Die for a semi-product of a combination nipple that connects a flexible hose to a rigid pipe
06/04/2003EP1316492A1 A hollow steering rack bar and its manufacturing method
06/04/2003CN1421346A Hollow steering rack shaft and producing method thereof
06/04/2003CN1110384C Forging forming method for Poland type ball valve base body
06/03/2003US6571459 Apparatus for manufacturing spindle components
06/03/2003US6571452 Method of making steel couplers for joining concrete reinforcing bars
05/2003
05/29/2003US20030098095 Non-heat treated steel for hot forging with easy fracture splitting
05/29/2003US20030097894 Hollow steering rack bar and its manufacturing method
05/28/2003EP1314901A1 Method for manufacturing outer ring and inner ring of bearing
05/28/2003EP1314846A2 Method for the production of a toothing for a shaft as well as a door drive with a toothing thus obtained
05/28/2003EP1210193B1 Compacted-powder opposed twin-helical gears and method
05/28/2003CN1420968A Combination of screw and screw driver bit and header punch for its manufacture
05/28/2003CN1109588C Method for making semi-finished regulating arm
05/27/2003US6568233 Method and apparatus of diametrically expanding metal shafts
05/27/2003CA2264061C Plate clutch assembly having a torque transmitting member with an improved lubrication controlling dam structure and method of making the same
05/22/2003US20030093903 Method for manufacturing outer ring and inner ring of bearing
05/21/2003CN1418745A Method for making aluminium ball and slide bush and slide bush made by said method
05/20/2003US6565683 Method for processing billets from multiphase alloys and the article
05/15/2003WO2003040597A1 Extruded pulley
05/15/2003WO2003039787A1 Longitudinal component with mass accumulations
05/15/2003US20030088979 Method of producing aluminum ball, method of producing compressor shoe, and compressor shoe produced by the method
05/15/2003CA2465094A1 Longitudinal component with mass accumulations
05/13/2003US6561716 Universal joint device and method of manufacturing the device
05/08/2003US20030087705 Forging method of a hollow part
05/08/2003US20030085259 Method of joining material
05/08/2003DE10204122C1 Valve, for reciprocating piston machine, comprises a valve disk having an undercut expansion axially protruding over an enlarged area of a valve shaft to axially clamp the enlarged area and produce a form-locking connection
05/07/2003EP1058589A4 Fastener forming machine
05/07/2003CN1415772A Ni-base alloy, Ni-base alloy prepn. process and forging die thereof
05/07/2003CN1107564C Tech for mfg. non-urble ball spigot without welding
05/07/2003CN1107560C Method of jointing metal components
05/06/2003US6558263 Forging method of a hollow part
05/06/2003US6557257 Method for reducing hard machining time of a constant velocity joint
05/02/2003EP1306520A1 Method of joining high temperature, high strength material
05/01/2003WO2003035295A1 Flattened u-bolt and method_for making said u-bolt
05/01/2003US20030079517 Method for manufacturing a hollow rack shaft
05/01/2003US20030079516 Method for manufacturing a hollow rack shaft
04/2003
04/30/2003CN1107170C Anti-loose nut
04/30/2003CN1107169C Blind rivet and method of assembling thereof
04/29/2003CA2409425A1 Method of joining material
04/29/2003CA2268878C Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar
04/24/2003US20030074947 Method for producing a housing for a ball joint
04/24/2003US20030074778 Method of manufacturing arm
04/23/2003EP1303368A1 Method for producing a shaft and device containing one such shaft
04/23/2003CN1411929A Accurately-blanking process for hot-press forming gear
04/17/2003US20030070297 Method for fabricating external-tooth gears
04/16/2003EP1150798B1 Crankshaft construction
04/16/2003CN1410184A Cold forging pressing shaping method of grooved head less fixing screw
04/10/2003WO2003028914A1 Method of manufacturing hollow member
04/09/2003CN1104985C Powder compacting apparatus
04/08/2003US6543569 Electric power steering apparatus
04/08/2003US6543139 Machining tool for manufacturing radial bearings, and manufacturing apparatus and manufacturing method using the same
04/08/2003US6543136 Method for improved valve seating of a fuel injector by coining and a valve made thereby
04/03/2003US20030061713 Method of manufacturing hub unit for supporting wheel and die for manufacturing the same
04/02/2003EP1297915A1 Method for manufacturing forged product, and apparatus for manufacturing forged product
04/02/2003EP1297269A1 Method for producing a torsional vibration damper housing, especially a housing for a viscosity torsional vibration damper
04/01/2003US6540619 Bolt and a manufacturing method thereof
04/01/2003US6540428 Caulking roller and sintered flanged pulley caulked by the caulking roller
04/01/2003US6539765 Rotary forging and quenching apparatus and method
03/2003
03/28/2003WO2002049788A1 Forging press comprising an adjusting device on the matrix side thereof
03/27/2003WO2003025403A2 Screw head formation
03/27/2003WO2003025376A1 Method for producing a piston or piston head for an internal combustion engine
03/27/2003US20030060296 Method of manufacturing an expansion sleeve
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