Patents for B21K 1 - Making machine elements (7,621)
11/1993
11/09/1993US5259320 Intermediate article used to form a bullet projectile or component and a finally formed bullet
11/04/1993DE4213226A1 Flat jet nozzle, esp. high pressure jet nozzle - has shaped recesses in wall of pocket bore, to generate part jets directed towards each other
11/02/1993US5257453 Process for making exhaust valves
10/1993
10/27/1993CN1077667A Coupling for shoulder ended pipes
10/21/1993DE4307092A1 Wheel nut with integral flange - has concave flange face and is solid-shaped, e.g. by cold or hot-pressing and has clamping portion with tapering bore and slots
10/21/1993DE4307091A1 Wheel nut with polygonal portion for spanner - has pressure plate solid-shaped by cold or hot-pressing and with concave face towards wheel
10/21/1993DE4307090A1 Solid pressed wheel nut with bearing plate - has inner cone face and slots in clamping portion formed by pressing and inner thread formed by non-cutting process
10/14/1993WO1993020003A1 Bobbin body and process for producing the same
10/13/1993EP0565114A1 Method for obtaining a valve body and valve body obtained through said method
10/12/1993US5251585 Rocker arm
10/07/1993DE4211172A1 Spulenkörper und Verfahren zu dessen Herstellung Bobbin and process for its preparation
10/07/1993DE4210340A1 Process for production of safety nut - involves cutting slit which extends 300 deg. around nut circumference and is opened to create spring arm binding on bolt thread
10/06/1993EP0564197A1 Production of pipe couplings
09/1993
09/21/1993US5245851 Differential pinion, metal mold for plastic working the same, and method for plastic working with the metal mold
09/21/1993US5245850 Process of producing an outer joint part
09/16/1993WO1993017813A1 A method and an apparatus for making screws, rivets or similar objects
09/16/1993WO1993017811A1 A machine for forming objects
09/16/1993WO1993017810A1 A method and an apparatus for making screws, rivets or similar objects
09/16/1993WO1993017809A1 A method and an apparatus for making an elongate object
09/16/1993WO1993017808A1 A method and an apparatus for making a head on an elongate blank
09/15/1993EP0560010A1 Plastic working method for a holed member
09/13/1993CA2088019A1 Plastic working method for a holed member
09/08/1993EP0558815A1 Device for producing a hollow workpiece, profiled, at least internally, in a straight or oblique direction with respect to the workpiece-axis, and its use
09/08/1993CN2141746Y Screw rolling machine
09/07/1993US5241848 Light weight drive shaft
09/07/1993CA1321872C Method for manufacturing a single-piece type valve sleeve
08/1993
08/25/1993EP0556890A1 Process of manufacturing a stamped ball joint housing with perimeter flange
08/24/1993US5237745 Method of and apparatus for manufacturing drive plate
08/19/1993DE4302781A1 Lever to actuate valves in IC engines - has central round passage in pivot direction, and H- shaped sections on either side
08/19/1993DE4204213A1 Production of balls by upsetting lengths of wire - involves tools which use compressed air to withdraw tool at end of working stroke
08/11/1993CN1021776C Cold molding reinforcing process for low-carbon manganese niobium steel fastening parts
07/1993
07/27/1993US5230134 Method of making a petal rod
07/22/1993WO1993013891A1 Method of forming material made of sheet metal into boss part and method of forming sheet metal into pulley
07/21/1993EP0552021A1 Gear product
07/20/1993US5228818 Fastener system for male and female threaded members
07/15/1993DE3744890C2 Locating of workpiece and pallet on machine tool
06/1993
06/30/1993EP0353231B1 Process and apparatus for forging one piece track roller rim
06/17/1993DE4140720A1 Mfg.pinions of eccentric epicyclic drive and associated rims - uses first stage to form central sections,and second stage to press teeth
06/16/1993EP0546609A1 Integrated ball joint
06/15/1993US5219176 For heavy commercial vehicles
06/15/1993US5218763 Method for manufacturing a swaged piston assembly for an automotive air conditioning compressor
06/15/1993CA1318990C Process for cold pressing a conical external thread
06/11/1993CA2077200A1 Integrated ball joint
06/10/1993WO1993011366A1 Method of manufacturing a crankshaft
06/08/1993US5216912 Steering shaft and manufacturing method therefor
06/03/1993DE4220625C1 Rods, pipes, shaped pieces etc. - have surface depressions applied, esp. by ball blasting which are filled with lubricant prior to cold-drawing
06/02/1993EP0544639A1 Isolating plate to be driven into masonry walls and process and apparatus for its manufacture
05/1993
05/27/1993WO1993009896A1 Non-cutting tool for producing inner and outer profiles
05/27/1993DE4138126A1 Non-cutting tool to shape workpieces - has tool elements inserted into workpiece, and engaged by expander in radial direction, pressing elements against workpieces, forming threads
05/26/1993CN1072360A Wasteless stamping method
05/25/1993US5213250 Method for forming a lightweight flanged axle shaft
05/19/1993DE4137539A1 Forming spiral grooves on internal conical surface - uses embossing punch,sliding axially and rotating about surface axis
05/18/1993US5211048 Method of forming shaped configuration at end of long element
05/05/1993CN1071610A Washer making method
04/1993
04/27/1993US5205464 Method for forming a lightweight flanged axle shaft
04/21/1993EP0537824A2 Ultrasonic insert stud and method of assembly
04/20/1993US5203742 Punch for making such screw heads with slant rib
04/17/1993CA2079651A1 Ultrasonic insert stud and method of assembly
04/14/1993EP0537034A1 Method of manufacturing a washer
04/13/1993US5201686 Process and apparatus for producing a lock nut
04/13/1993CA1315916C Method of machining an oblong workpiece and a machine for performing the method
04/07/1993EP0535193A1 Method of manufacturing an unthreaded cylindrical shaft section on a fastener bolt or fastener element, and a drop-forging unit for carrying out the method.
04/06/1993US5199837 Ultrasonic insert stud and method of assembly
04/06/1993US5199751 Pressure hose coupling collar and method for producing same
03/1993
03/31/1993EP0534818A1 Method of producing an axle with profiled ends, machine for carrying out the method and axles thus obtained
03/31/1993EP0414670B1 A tool ring, a method of making it, and a holding tool for use in the performance of the method
03/24/1993EP0533322A1 Method for forming hollow articles
03/24/1993EP0382773B1 A method of machining an oblong workpiece and a machine for performing the method
03/18/1993DE4207378A1 Forming tool with ring-shaped bottom die - has hydraulically movable servo element to apply external pressure to die for elastic deformation
03/18/1993DE4130557A1 Lenkwelle und verfahren zu deren herstellung Steering shaft and methods for their preparation
03/10/1993EP0530436A1 Twist-forming press for crank shaft or the like
03/03/1993EP0529476A1 Rollerbearing for building structures and process for its manufacture
02/1993
02/24/1993CN1069322A Screw head with slant rib and punch for making such screw heads
02/18/1993WO1993003284A1 Screw head with slant rib and punch for making such screw heads
02/16/1993US5186688 Cold working, passivation, aging
02/16/1993US5186082 Ironing punch for making socket of ball-and-socket joint and method of manufacturing such ironing punch
02/10/1993CN1068762A Technology for upsetting and shaping of coupler of hollow pumping rod
02/09/1993US5184494 Method of forming universal joint housings
02/04/1993WO1993001908A1 Method of forming universal joint housings
02/04/1993CA2113616A1 Method of forming universal joint housings
02/03/1993EP0526174A1 Process for making exhaust valves
02/03/1993EP0526046A2 Composite poppet valve and method for manufacturing same
01/1993
01/27/1993EP0524815A1 Apparatus for forging a large caliber ring
01/12/1993US5177991 Method of and apparatus for coining tapers at opposite ends of a sleeve member
01/07/1993DE4122158A1 Production of hollow rivets from wire - has tool which forms rivet bore and rivet head in one operation, using mandrel arrangement
01/07/1993DE4121943A1 Production of fork-ends by flow pressing - uses die with mandrel mounted parallel to axis of die body
12/1992
12/30/1992EP0520064A1 Method and apparatus for cold extruding universal seal crosspieces
12/29/1992US5174147 Method and apparatus for cold extruding universal seal crosspieces
12/29/1992US5174025 Method of manufacturing a hub for a spindle motor
12/29/1992CA1311995C Production of threaded metal rods for making u-bolts
12/24/1992DE4208019A1 Blanks prodn. for rotationally symmetrical components - using ring to prevent diametral expansion of blank
12/23/1992WO1992022752A1 Fastener system
12/23/1992CA2111095A1 Fastener system
12/15/1992US5171186 Method of manufacture of a long point drill screw
12/15/1992US5170655 Method for forming hollow articles
12/15/1992CA1311379C Blind fastener
12/10/1992DE4118113A1 Reworking/conversion method for horn hook head bolts - bolt is shortened and given space in head, to provide material for square neck
12/08/1992CA1311167C Fuel injection line with compression nipple formed thereon by upsetting and process for the production thereof
12/01/1992US5167585 Blind riveting assembly
11/1992
11/26/1992WO1992020475A1 Precision forming apparatus, method and article
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