| Patents for B21J 7 - Hammers; Forging machines with hammers or die jaws acting by impact (996) |
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| 06/22/1995 | DE4444495A1 Installation for stretch forging of ingots |
| 06/22/1995 | DE4444493A1 Forging machine |
| 06/21/1995 | EP0658385A1 Frame for a radial forging machine |
| 05/23/1995 | US5417098 Hydraulic feed drive for flying upsetting presses |
| 05/17/1995 | EP0653258A1 Forging machine |
| 05/17/1995 | EP0653257A1 Forging machine |
| 05/02/1995 | US5411521 Medical suturing device, a single-strike die mechanism, and a method of using said die mechanism for forming the medical suturing device |
| 04/20/1995 | DE4342974C1 Driving and guiding unit for rams of forging machines or forging presses |
| 04/19/1995 | CN1101595A High speed hydraulic press hammer |
| 03/01/1995 | CN1027740C Device for guying and compensating tool support and crankcase of upsetting press |
| 12/07/1994 | EP0610510A4 Method of radial forging of blank. |
| 12/07/1994 | EP0610509A4 Method for obtaining hollow forgings by radial forging of continuous blanks. |
| 12/07/1994 | CN1026866C Side rolling mill which narrowing rolled material |
| 10/19/1994 | CN1093627A Oil-to-oil electro-hydraulic hammer |
| 10/19/1994 | CN1093621A Hydraulic apparatus for driving of supplying system of rapid pre-forging machine |
| 08/17/1994 | EP0610510A1 Method of radial forging of blank |
| 08/17/1994 | EP0610509A1 Method for obtaining hollow forgings by radial forging of continuous blanks |
| 08/17/1994 | CN2174277Y Arching free forging hammer |
| 07/26/1994 | US5331833 Method of operating an upsetting press |
| 07/13/1994 | CN1089193A Method and apparatus for working on mold forging machine |
| 07/12/1994 | US5327767 Press working apparatus |
| 05/31/1994 | US5315854 Tube tapering apparatus having a variable orifice die |
| 05/24/1994 | US5313816 Forging machine with stroke adjustment means |
| 05/18/1994 | EP0597468A1 Hydraulic feeding drive for flying upsetting presses |
| 04/05/1994 | US5299848 Tooling comprising tongs with two pivoted arms, with a release system |
| 03/31/1994 | DE4232728A1 Forming machine - with two pumps working parallel to set the stroke frequency and stroke length of the machine |
| 03/23/1994 | CN1084108A Electrical liquid hammer system driven by feed liquid |
| 03/16/1994 | CN1083751A Method and apparatus for precision mold forging |
| 03/15/1994 | US5293769 Forging machine with die holder lateral adjustment |
| 02/16/1994 | CN1082211A Aluminum pipe production process, electrophotographic photosensitive member produced by the production process adn electrophotographic apparatus having the electrophotographic photosensitive member |
| 12/22/1993 | CN2149991Y Electric-liquid hammer |
| 12/09/1993 | WO1993024256A1 Method for obtaining hollow forgings by radial forging of continuous blanks |
| 12/09/1993 | WO1993024255A1 Method of radial forging of blank |
| 11/24/1993 | CN1022808C Quick upsetting press |
| 11/11/1993 | DE4214444A1 Mfg. spherical shells for homo-kinetic joints - by deforming sequentially and radially tubular or cup-shaped blank with shaping cross-sectional reduction |
| 11/03/1993 | EP0568411A1 Press working apparatus |
| 10/27/1993 | EP0566818A1 Forging machine for making bar-shaped workpieces or the like |
| 10/20/1993 | CN2144035Y Anticollision device for electro-hydraulic hammer top |
| 10/19/1993 | US5253508 Force transmitting coupling for stamping and forming machine |
| 10/06/1993 | EP0563549A2 A medical suturing device, and die mechanism forming it |
| 09/23/1993 | DE4206260A1 Precision forming tool for tubes and rods - has radial hammers displaced precise distance by cam units with central drive controlled by electronic programmable controller |
| 08/04/1993 | EP0553876A1 Aluminum pipe production process, electrophotographic photosensitive member produced by the production process, and electrophotographic apparatus having the electrophotographic photosensitive member |
| 07/27/1993 | US5230352 Medical suturing device, a single-strike die mechanism, and a method of using said die mechanism for forming the medical suturing device |
| 07/21/1993 | CN1074472A A machine for stamping coal mixtures for coking |
| 07/07/1993 | EP0549826A1 Forging machine |
| 07/07/1993 | EP0549825A1 Forging machine |
| 05/19/1993 | CN2133382Y Two-purpose free forging (mould forging) electric hydraulic hammer with water or oil |
| 04/08/1993 | DE4132011A1 Control of percussive forming machines - is based on workpiece thickness with automatic adjustment of impact energy |
| 04/07/1993 | CN2129188Y Multifunction servo-controller of gas-liquid hammer |
| 03/23/1993 | US5195351 Arrangement for clamping and balancing pressing tool carriers and crank housing of an upsetting press |
| 12/08/1992 | US5168739 Upsetting press for reducing the width of rolling stock |
| 12/02/1992 | CN1019281B Hammer-controlling system |
| 11/04/1992 | CN1018896B Butt ramming hammer with several power heads |
| 10/28/1992 | EP0510980A2 Automatic variable stroke crank assembly |
| 10/26/1992 | CA2066873A1 Automatic variable stroke crank assembly |
| 10/07/1992 | CN1018529B Three-hammerhead radial forging machine |
| 09/16/1992 | CN1064424A Method for operating press edger |
| 09/02/1992 | EP0501211A2 Method of operating an upsetting press |
| 09/02/1992 | CN1018054B Swaging machine |
| 07/22/1992 | CN2110530U Mechanical flat-die hammer |
| 06/17/1992 | CN1061922A Electromagnetic hammer |
| 05/20/1992 | CN1061169A Device for guying and compensating pressing tool support and crankcase of upsetting press |
| 05/13/1992 | EP0484783A2 Device for bracing and balancing the press tool holder and crankcase in an upsetting press |
| 04/22/1992 | CN2102170U Pneumatic hammer power head |
| 03/25/1992 | EP0476350A1 Swaging Machine |
| 02/19/1992 | CN1058734A Upsetting press for reducing width of rolling stock |
| 02/12/1992 | EP0470435A2 Upsetting press for reducing the width of rolling stock |
| 01/22/1992 | EP0467493A1 Apparatus for swing forging |
| 01/15/1992 | CN2093048U Electromagnetic hammer |
| 01/07/1992 | US5078002 Hydraulic assembly to actuate forging presses |
| 01/07/1992 | US5077999 Flying upsetting press |
| 01/01/1992 | CN1015237B Crank-operated hammer |
| 12/03/1991 | US5069056 Simplified hydraulic forging machine |
| 10/24/1991 | DE4002855C1 Tool changer for kneading machine - has front cover which swivels and hammer head fitted with trip arm |
| 10/24/1991 | DE4002854C1 Tool changer for kneading machine - has two or more hammer plungers and set jaws with infeed wedges |
| 10/02/1991 | CN1054919A Propelling type forging hammer |
| 09/25/1991 | EP0447839A1 Method to forge with a swaging machine, and a swaging machine suitable to carry out the method |
| 09/10/1991 | US5046344 Apparatus for sizing a workpiece |
| 08/06/1991 | US5036691 Swaging machine comprising a die changing mechanism |
| 06/19/1991 | EP0432516A1 Hydraulic assembly to actuate forging presses |
| 05/29/1991 | EP0428940A2 Simplified hydraulic forging machine |
| 04/24/1991 | EP0424190A1 Tool outfit comprising a pair of articulated tongs with an undercut system |
| 04/10/1991 | CN2074691U High speed hydraulic-pneumatic motive power head for forging hammer |
| 03/21/1991 | CA2025694A1 Tooling comprising tongs with two pivoted arms, with a release system |
| 03/19/1991 | US5000026 Long forging machine for the forging of round or sharp-edged bars |
| 02/21/1991 | WO1991001856A1 Pneumatically operated device for plastic deformation, in particular for punch marking |
| 02/06/1991 | EP0411300A2 Tool changing device for swaging and kneading machines |
| 02/06/1991 | EP0411249A1 Pneumatic device for plastic deformation, in particular for impact marking |
| 01/15/1991 | US4984640 Power post driver and hammer |
| 12/12/1990 | CN1047636A Quick upsetting press |
| 12/05/1990 | EP0400385A2 Flying upsetting press |
| 09/12/1990 | CN1009532B Combined multifunction hammer shaft of forging hammer |
| 09/05/1990 | CN2061493U Coal-fired thin-wall assembled forging furnace with horizontal fire grade |
| 08/16/1990 | EP0381919A2 Forging machine for the continuous forging of strand material, in particular continuously cast slabs |
| 07/24/1990 | US4942756 Multi-jaw forming press especially suited for details of variable sections |
| 07/18/1990 | CN1043896A Three-hammerhead radial forging machine |
| 07/17/1990 | US4941342 Multi-ram forging assembly |
| 06/14/1990 | WO1990006194A1 Device for cyclic deformation of continuous strip |
| 05/31/1990 | DE3839492A1 Rotary kneading machine |
| 05/10/1990 | DE3837643A1 Upsetting press for the step wise changing of the cross-section of metal bodies in strand form, e.g. slabs |