Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21J - Forging; Hammering; Pressing; Riveting; Forge furnaces › B21J 7 - Hammers; Forging machines with hammers or die jaws acting by impact
Patents for B21J 7 - Hammers; Forging machines with hammers or die jaws acting by impact (996)
05/2001
05/23/2001CN1066078C Upsetting forger for working wire with iso-section
05/09/2001CN1294037A Counterblow hammer and clutch of brand-new press
04/2001
04/25/2001EP1093871A2 Forging machine
03/2001
03/01/2001DE19958103C1 Press tool for rotationally symmetrical hollow workpieces e.g. pipe fittings, has press surfaces displaced radially via 2 outer control bodies provided with angled control surfaces acting on inner control bodies
01/2001
01/25/2001DE10025060A1 Method for fabrication of screws etc. from wire blanks uses chucks to act as dies and move blanks between individual forming tools
12/2000
12/06/2000CN2408991Y Spring type forging pressing hammer
09/2000
09/13/2000CN2395824Y Driving head for full-hydraulic liquid inlet electric hammer
08/2000
08/02/2000EP1023132A1 Hydraulic drive system for forging press or forging machine slides
08/01/2000US6094962 Method for profile-kneading workplaces
07/2000
07/19/2000EP1020241A2 Swaging machine
07/12/2000EP1017519A1 Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging device
07/04/2000US6085011 Metal fiber end sleeve for a flexible fiber optic light guide and method for producing same
06/2000
06/15/2000DE19856949A1 Drop forge has an U-shaped ram with a center of gravity displaced towards the anvil on tool closure to prevent ram tilting and reducing eccentric loading
06/14/2000EP1008403A2 Forging machine
06/14/2000EP1008402A2 Swaging machine
06/07/2000EP1005933A1 Multi-punch forging machine
06/06/2000US6070446 Swaging machine
06/02/2000WO2000030788A1 A method and a device for deformation of a material body
04/2000
04/19/2000EP0993888A2 Forging machine
02/2000
02/23/2000CN1049615C Hydraulic apparatus for driving of supplying system of rapid pre-forging machine
02/16/2000CN1049374C Method and apparatus for working on mold forging machine
12/1999
12/22/1999CN1239446A Plate thickness pressing device and method
11/1999
11/10/1999CN1046223C Method and apparatus for precision rotary forging
09/1999
09/22/1999EP0943376A1 Plate thickness pressing device and method
09/15/1999CN2338112Y Hammer guiding mechanism for openside electrohyraulic hammer
09/08/1999EP0940201A2 Method for swaging workpieces
06/1999
06/17/1999DE19754934A1 Extrusion machine to reduce cross-section of rods, tubes and wire
06/02/1999EP0919310A1 Swaging machine
05/1999
05/19/1999EP0751842B1 Double press
05/11/1999US5901602 Method for the lateral compacting of slabs and relative device
04/1999
04/22/1999WO1999019096A1 Hydraulic drive system for forging press or forging machine slides
04/22/1999DE19846348A1 Hydraulic drive system for rams of forging presses or forging machines
04/20/1999US5894755 Forging machine
04/20/1999US5894753 Method of producing splines on a shaft
04/15/1999DE19742819A1 Vorschubeinrichtung für eine Umformungsvorrichtung, insbesondere eine Kaltumformungsvorrichtung wie eine Rundknetvorrichtung Feed means for forming device, especially a cold forming device such as a Rundknetvorrichtung
04/08/1999WO1999016563A1 Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging device
03/1999
03/25/1999WO1999013998A1 Plate thickness pressing device and method
02/1999
02/23/1999US5873212 For attaching a suture to a surgical needle
01/1999
01/27/1999EP0893717A2 Process of producing a metal ferrule for a flexible optical fibre cable
01/20/1999CN1041695C Oil-to-oil electro-hydraulic hammer
01/12/1999US5857378 Method of controlling the stroke frequency of a forging machine and forging machine for carrying out the method
12/1998
12/23/1998EP0885073A2 A machine for performing high speed stamping and forming operations
12/09/1998CN1041133C Aluminium pipe production process, electrophotographic photosensitive member produced by said process
10/1998
10/07/1998CN2293404Y Oil and water two purpose double-arm free-forging electric hydraulic hammer
10/07/1998CN1194893A End closer for lowering top hammer consumption and method thereof
09/1998
09/15/1998US5807106 Endodontic instrument having depth calibrations and method of fabricating same
09/10/1998DE19711103A1 Components deforming method by magnetic structuring
07/1998
07/23/1998DE19709997C1 Hammer forge for reducing thickness of tubular workpiece
07/07/1998US5775441 Power driven striking tool
05/1998
05/13/1998EP0841111A1 Method of obtaining grooves on a shaft
05/07/1998DE19732051C1 Fitting end sleeve to optic fibre cable
05/05/1998US5746085 Gear forming method
04/1998
04/09/1998DE19632012A1 Forming press for pointing of pipes
04/01/1998EP0610510B1 Method of radial forging of blank
03/1998
03/31/1998US5732588 Double press
03/18/1998EP0829319A2 Forging machine
03/18/1998EP0829318A2 Method for controlling the stroke frequency of a forging press and forging press for carrying out the method
02/1998
02/26/1998DE19634307A1 Two-function tool for preparing tube ends for draw-bench
02/17/1998US5718145 Machine for performing high speed stamping and forming operations
02/10/1998US5715724 Adaptive, self-regulating forging hammer control system
01/1998
01/29/1998WO1998003127A1 Endodontic instrument having depth calibrations and method of fabricating same
01/13/1998US5707726 Aluminum pipe production process, electrophotographic photosensitive member produced by the production process, and electrophotographic apparatus having the electrophotographic photosensitive member
11/1997
11/12/1997CN1164444A Method for lateral compacting of slabs and relative device
10/1997
10/01/1997EP0798056A1 Method for the lateral compacting of slabs and relative device
08/1997
08/12/1997US5655402 Forging machine
06/1997
06/24/1997US5640877 Hydraulic piercing and stripping assembly
06/12/1997WO1997001404A3 A machine for performing high speed stamping and forming operations
05/1997
05/02/1997EP0770438A1 High production rate swaging machine and swaging working process
04/1997
04/30/1997CN2253255Y 电锤连杆装置 Hammer linkage
04/24/1997DE19623968A1 Forging hammer
01/1997
01/29/1997CN1033917C Machine for stamping coal mixtures for coking
01/23/1997DE19526895A1 Reduction of vibration transmission
01/21/1997US5595848 Electrophotographic photosensitive member produced from aluminum pipe
01/16/1997WO1997001404A2 A machine for performing high speed stamping and forming operations
01/08/1997EP0751842A1 Double press
01/02/1997DE19626160A1 Gearwheel mfg. process using plastic deformation of cold metal
01/02/1997DE19522577A1 Air operated pneumatic machine for providing hammer blows to workpiece
12/1996
12/19/1996DE19621057A1 Electric hammer or hammer drill
12/11/1996CN2242145Y Double initiative, double passivity and four hammers forging machine
12/10/1996US5582060 Forging machine
12/10/1996US5582059 Forging machine
11/1996
11/27/1996CN2241027Y Air hammer capable of forging round steel
11/19/1996US5575186 Machine tool stroke control system
11/12/1996US5572897 Method of obtaining hollow forgings by radial forging of solid blanks
10/1996
10/30/1996CN1033146C Method for operating press edger
10/23/1996EP0610509B1 Method for obtaining hollow forgings by radial forging of continuous blanks
08/1996
08/06/1996US5542278 Method of radial forging
07/1996
07/04/1996WO1996020053A1 Double press
07/04/1996DE4446580A1 Doppelpresse Double Press
05/1996
05/08/1996CN1121850A Single arm type electric hydraulic free hammer
04/1996
04/17/1996CN2224684Y Internal-external differential hydraulic pile hammer sequential direction changing oil path
04/11/1996DE4434958A1 Device for manufacturing precision forging parts
04/03/1996CN1119564A Upestting forger for working wire with iso-section
03/1996
03/27/1996CN2223156Y Electric hydraulic hammer unit head
09/1995
09/05/1995US5447050 Hydraulic forming machine
07/1995
07/05/1995EP0661120A1 Driving and guiding unit for rams of forging presses or machines
06/1995
06/28/1995EP0659502A1 Installation for stretch-forging of ingots
06/28/1995EP0659501A1 Forging machine
06/22/1995DE4444498A1 Forging machine
06/22/1995DE4444497A1 Forging machine
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