| Patents for B21D 53 - Making other particular articles (18,517) |
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| 03/17/1992 | US5096449 Method for manufacturing metal cylinder members of electron tubes and method for manufacturing magnetron anodes |
| 03/17/1992 | US5096036 Electromagnetic coupling discs and method of making the same |
| 03/17/1992 | US5095640 Method of producing bucket wheel bodies and bucket wheel body produced by the method |
| 03/17/1992 | CA1297326C Rack assembly for forming splines in thin-wall member |
| 03/12/1992 | DE4028438A1 Turbulence strips for tubes of heat exchanger - are made in two parts with one part inserted in each end of tube |
| 03/11/1992 | EP0474516A2 Method and apparatus for forming threads on a sleeve inner wall |
| 03/10/1992 | US5093999 Vegetation cutting tool and method of manufacture |
| 03/10/1992 | CA1296989C Method and apparatus for forming loop-shaped starting pieces such as metallic binding bands into prescribed final shapes |
| 03/05/1992 | DE4027680A1 Round or flat wire frame section - has abutting surfaces soldered together, with join in middle of curved part |
| 03/04/1992 | CN2097697U Telephone plug punch |
| 03/04/1992 | CN1015696B Forming method and device for roll-expanding by planet roll |
| 03/03/1992 | US5092040 Spin molding process for manufacturing a vehicle wheel |
| 03/03/1992 | CA1296756C2 Method of wheel manufacture for correcting rotational non-uniformity of a pneumatic tire and wheel assembly, apparatus for performing such method, and resulting wheel |
| 02/27/1992 | DE4026258A1 Method of producing cutting bevel on mower blade - involves dual stamping process after which projecting edge is ground off in line with general plane |
| 02/25/1992 | CA1296168C Apparatus for gripping tubes in multirow plate fin coils |
| 02/20/1992 | WO1992002739A1 Assembly of a cylindrical body made to finished dimensions |
| 02/20/1992 | WO1992002317A1 Method and device for splitting a stream of fluid |
| 02/19/1992 | CN1015516B Spiral bevel-gear cold-straighening technological equipment and straightening method thereof |
| 02/18/1992 | US5088193 Method for manufacturing a heat exchanger |
| 02/18/1992 | CA1295855C Method and an apparatus for cold-roll forming of annular workpieces |
| 02/18/1992 | CA1295822C Method of wheel manufacture for correcting rotational non-uniformity of apneumatic tire and wheel assembly, apparatus for performing such method, and the resulting wheel |
| 02/12/1992 | EP0470830A1 Metallic hollow O-ring and process for producing same |
| 02/11/1992 | US5086837 Heat exchanger formed from superimposed trays |
| 02/11/1992 | US5086637 Apparatus for forming metallic binding bands |
| 02/11/1992 | CA1295467C Method of wheel manufacture for correcting rotational non-uniformity of a pneumatic tire and wheel assembly, apparatus for performing such method, and resulting wheel |
| 02/08/1992 | CA2048586A1 Metallic hollow o-ring and process for producing same |
| 02/08/1992 | CA2048531A1 Bearing and method of manufacturing same |
| 02/06/1992 | DE4100946C1 Connection of metal frames - involves clamp symmetrical to mitre joins and drill to make holes for fastening |
| 02/05/1992 | EP0469150A1 Package of plates for tube-plate heat exchanger with diffuser-confuser channels and a rotor die for making the plates of said package |
| 02/04/1992 | US5085679 Glass spinner manufacture |
| 02/04/1992 | US5085268 Heat transmission roll and a method and an apparatus for manufacturing such a roll |
| 02/04/1992 | CA1295115C Method of making a cam shaft |
| 01/28/1992 | CA1294798C Assembled cam shaft and method of manufacturing same |
| 01/21/1992 | CA1294461C Method of making pulleys with v-shaped grooves |
| 01/16/1992 | DE4119841A1 Plate-type heat-exchanger - has collars round plate opening with spigots at free ends |
| 01/15/1992 | CN1015305B Hollow shaft fixing drive element with axially different property of stoff to it by expanding it self |
| 01/14/1992 | US5080787 High-pressure filter assembly, method and apparatus for forming high-pressure filters |
| 01/08/1992 | EP0465117A1 Vegetation cutting tool |
| 01/08/1992 | EP0464449A1 Method of assembly of a wheel disc to a rim, and wheel obtained as such |
| 01/08/1992 | CN2092381U Machines for downword welding the flanges |
| 01/07/1992 | US5077894 Method of making a shell with an integral passage |
| 01/02/1992 | EP0463200A1 Device for producing formed contours on the outside circumference of rotationally symmetrical workpieces made of sheet metal and method for using the same |
| 01/02/1992 | EP0292494B1 Key blade and method of producing the same |
| 12/31/1991 | US5075964 Method of making a cooling fan rotor for a rotating electrical machine in particular for an alternator for an automotive vehicle |
| 12/30/1991 | CA2041959A1 Vegetation cutting tool and method of manufacture |
| 12/27/1991 | EP0462961A1 Apparatus for bending hollow spaces frames |
| 12/27/1991 | EP0462394A1 Connecting element, in particular connecting rod, and method of manufacturing same |
| 12/19/1991 | DE4117002A1 Bending device for holder profile rails |
| 12/18/1991 | EP0461293A1 Method for rolling of crankshafts with different eccentricities and machine for carrying out this method |
| 12/17/1991 | US5072509 Method of manufacturing a belt pulley |
| 12/12/1991 | WO1991018753A1 A wheel and methods of manufacture of a wheel |
| 12/11/1991 | EP0461100A1 Method and apparatus for bending hollow spacer frames for isolating glass |
| 12/11/1991 | EP0460872A1 Heat exchangers |
| 12/11/1991 | EP0460321A1 Apparatus for forming binding bands |
| 12/10/1991 | US5071056 Method of making brake shoes |
| 12/10/1991 | US5070608 Method for gripping tubes in multirow plate fin coils |
| 12/10/1991 | US5070607 Heat exchange and methods of manufacture thereof |
| 12/10/1991 | CA1292982C Heat exchanger and a method and apparatus for the manufacture thereof |
| 12/05/1991 | WO1991018692A1 Duplicate key duplicator |
| 12/05/1991 | CA2064470A1 Key duplicating machine |
| 12/04/1991 | EP0459971A1 Method and apparatus for obtaining curved parts in hollow section strips |
| 12/04/1991 | CN2089851U Hydraulic expand tubes machine |
| 12/03/1991 | US5069575 Roll forming notches in a thin-wall power transmission member |
| 12/03/1991 | US5069382 Apparatus and method for producing a pressure vessel from metal tubing |
| 12/03/1991 | US5069173 Push rod having irregularly shaped internal bore |
| 12/03/1991 | US5069051 Method and apparatus for forming threads on a sleeve inner wall |
| 12/03/1991 | US5068964 Method of making poly-v grooved pulley |
| 12/03/1991 | US5068963 Piston rings |
| 11/27/1991 | EP0457816A1 Device for manufacturing a profile on a rough pot |
| 11/27/1991 | CN1056451A Threaded composite tube type tubing plate for collecting solar heat and making method thereof |
| 11/26/1991 | US5067221 Method of and apparatus for assembling slide fastener sliders |
| 11/26/1991 | CA1292466C Finned heat transfer device and method for making same |
| 11/21/1991 | EP0456951A1 A machine tool, in particular for the manufacturing from sheet metal, of mechanical parts such as pulleys, wheels and similar |
| 11/21/1991 | DE4114615A1 Heat exchangers prodn. with single- or alternate sided channels - involves placing two metal sheets e.g. aluminium on elastic plate in chamber and expanding them under pressure |
| 11/19/1991 | US5065934 Method of manufacturing rod end joint |
| 11/19/1991 | US5065510 Method for the manufacture of a light metal vehicle wheel |
| 11/19/1991 | CA1292116C Method for manufacturing an exhaust manifold |
| 11/12/1991 | US5063664 Process for manufacturing wheel hub |
| 11/06/1991 | EP0455568A1 Pipe clamp and its fabrication procedure |
| 11/05/1991 | CA1291631C Bearings |
| 10/31/1991 | DE4013238A1 Production of pulley for multiple V-belt drive - by forming grooves with contoured rollers in sequence of operations |
| 10/29/1991 | US5060352 Manufacture of expanded sheet metal articles |
| 10/23/1991 | EP0453167A1 Method of manufacturing outside ring |
| 10/22/1991 | US5058415 Rolling bearing seal ring crimp tooling |
| 10/22/1991 | US5058411 Method for shaping filament reinforced annular objects |
| 10/22/1991 | US5058266 Method of making internally finned hollow heat exchanger |
| 10/22/1991 | CA1291114C Enhanced heat transfer surface and apparatus and method of manufacture |
| 10/22/1991 | CA1290960C Method and apparatus for forming welded rings |
| 10/17/1991 | WO1991015315A1 Making pulleys |
| 10/17/1991 | DE4106966A1 Pulleys for toothed belt drives - are mfd. by axially moving core tool and profiled rollers |
| 10/17/1991 | DE4011911A1 Double door made of plate - incorporates vertical closure fillet on one door engaging behind other to protect against dust |
| 10/16/1991 | EP0451268A1 Spin molding apparatus |
| 10/16/1991 | EP0390828B1 Device for shaping a rotationally symmetrical sheet metal object, for example a pulley blank |
| 10/08/1991 | US5054350 Key punch machine |
| 10/03/1991 | WO1991014521A1 Method of bending a ball point pen tip |
| 10/02/1991 | EP0449801A2 Apparatus for bending hollow frames for isolating glass |
| 10/02/1991 | EP0449599A1 Roll-formed automotive bumper and method of making same |
| 10/02/1991 | DE4109873A1 Deep drawing producing vane pump housing - uses reverse drawing which presses peripheral bead to give sharp edge at flange |
| 10/02/1991 | CN1054918A Three dimensional bending machine for automobile door and window frames |
| 10/01/1991 | US5052845 Multi-layer shaft |