| Patents for B21B 21 - Pilgrim-step tube-rolling (473) |
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| 06/29/1995 | DE4343609A1 Treating dirty lubricant esp. from cold pilger rolling |
| 06/28/1995 | EP0659494A2 Device for discharging of cold rolled tubes after a cold pilger mill |
| 05/30/1995 | US5419173 Forward feed gear mechanism for a cold pilger rolling mill |
| 05/23/1995 | US5418456 Monitoring pilger forming operation by sensing periodic lateral displacement of workpiece |
| 05/04/1995 | DE4335063C1 Cold pilger rolling mill for the cold-rolling of tubes (pipes) |
| 04/27/1995 | DE4336422A1 Crank operating means for a cold pilger rolling mill |
| 04/19/1995 | EP0648855A1 Production method for seamless pipes of non-ferrous metals, in particular copper and copper alloys |
| 04/18/1995 | US5406706 Forming iron alloy column, forming shaft hole, hardening, tempering |
| 04/06/1995 | DE4334694C1 Tool calibration for the rolls of a cold pilger rolling mill |
| 04/06/1995 | DE4332140A1 Method and apparatus for coiling and further treatment of tubes made of nonferrous metals, especially copper and copper alloys |
| 04/05/1995 | EP0646424A1 Mandrel monitor for cold pilger mills |
| 03/23/1995 | DE4332132A1 Manufacturing process for seamless tubes made of non-ferrous metals, in particular copper and copper alloys |
| 03/22/1995 | EP0644272A2 Process for producing tubes of copper or copper-alloy |
| 03/22/1995 | CN1100345A Rapid multistrand pipe mill |
| 02/28/1995 | US5392623 System for monitoring a pilger wall |
| 02/08/1995 | EP0637746A1 Method for the reduction of noise during the Eddy-current testing of tubes and tubes produced with that procedure |
| 02/03/1995 | CA2112655A1 Process for reducing the background noise during the quality control of metal tabes by means of eddy currents and tubes obtained using this process |
| 01/03/1995 | US5377515 Process for cold pilger rolling of thin-walled pipes |
| 12/15/1994 | DE4419827A1 Apparatus and method for reducing the diameter of a cylindrical workpiece |
| 11/30/1994 | CN1026762C Cold-rolling mill with hin- reciprocation movable roll stand |
| 11/04/1994 | CA2122383A1 Pilger mill mandrel measuring device |
| 11/01/1994 | US5359773 Manufacturing method of the roll main body of a caliber roll |
| 10/27/1994 | DE4313648A1 Process and apparatus for the production of seamless tubes by pressure-rolling |
| 10/18/1994 | US5355753 Method and arrangement for cutting cold pilgered tubes |
| 10/06/1994 | DE4410878A1 Device and method for monitoring a pilger mill |
| 10/04/1994 | US5351515 Apparatus and method for reducing the diameter of a cylindrical workpiece |
| 09/06/1994 | CA2030473C Wrench |
| 07/21/1994 | DE4400792A1 Pilger mill with rotatable roll stand for tube or pipe prodn. |
| 04/14/1994 | DE4234566A1 Rolling tools for cold pilger-rolling of tubes - comprises roll and mandrel profiles having kink-free parabolic transitions between reduction and smoothing zones. |
| 03/03/1994 | DE4238961C1 Pilger tube-rolling system - incorporates on-line length cutter with incremental feed and/or twisting motion |
| 03/01/1994 | US5291108 Method of equalizing the torque on a drive of a pilger rolling mill |
| 02/22/1994 | CA1327134C Drive system for a cold pilger rolling mill |
| 12/22/1993 | EP0575155A1 On-line monitoring of pilger workpiece displacement |
| 12/16/1993 | DE4233556C1 Cold-pilger-rolling system for small thin-walled pipes - heats pipe and tools to working temp. before and during initial rolling operation |
| 12/15/1993 | CA2087758A1 Tube loading sleeve for pilger mill |
| 10/19/1993 | US5253420 Razor head, especially razor blade unit of a wet razor |
| 10/12/1993 | US5251376 Razor head, especially razor blade unit of a wet razor |
| 08/25/1993 | EP0557040A1 Sleeve for protecting a tube inside during loading onto pilger mill mandrel |
| 08/04/1993 | EP0553388A2 Caliber roll for rolling and manufacturing method of its roll main body |
| 07/06/1993 | US5224369 Cold pilger rolling mill with reciprocating roll stand |
| 06/08/1993 | US5216911 Automatic cold-pilger mill stop apparatus |
| 02/23/1993 | CA1313780C Method for manufacturing tubes, bars and strips |
| 02/16/1993 | US5186035 Insertion of removable protective sleeve for minimization of defects on inner surfaces of zircaloy tubing |
| 02/10/1993 | CN1068759A Cold pilger rolling mill with reciprocating movable roll stand |
| 01/27/1993 | EP0524711A2 Cold pilger mill with a reciprocable rolling stand |
| 01/23/1993 | CA2074343A1 Cold pilger rolling mill with reciprocating roll stand |
| 01/07/1993 | EP0521294A1 Shaver head, especially the razor blade unit of a wet razor |
| 01/07/1993 | EP0521293A1 Shaver head, especially a razor blade unit for a wet razor |
| 12/29/1992 | US5175498 For measuring flaws in an object |
| 11/19/1992 | EP0513954A2 Method of compensating the torque in a driving apparatus of a pilger mill |
| 08/25/1992 | US5141566 Process for manufacturing corrosion-resistant seamless titanium alloy tubes and pipes |
| 07/23/1992 | DE4101941A1 Cold reciprocating rolling - uses lengths of wire feed in multiples of workpiece length with tubular material guide to prevent kinking |
| 06/30/1992 | US5125253 Cold pilgrim rolling |
| 06/11/1992 | DE4039741A1 Rolling pipes with control of temp. distribution - using measured geometry at rolling mechanism outlet to control local heating and/or cooling using on=line processor |
| 05/20/1992 | EP0485661A1 A wrench |
| 03/31/1992 | US5101366 Method for controlling the manufacture of zirconium tubes |
| 03/25/1992 | EP0476791A2 Cold pilger rolling mill for fabrication of tubes by cold rolling |
| 03/24/1992 | US5097602 Apparatus and method for automated inspection of a surface contour on a workpiece |
| 02/19/1992 | EP0471115A1 Method and device for fabricating bar-shaped metallic products |
| 01/08/1992 | EP0366648B1 Drive mechanism for cold pilger rolling mills |
| 12/31/1991 | US5076088 Drive for a pilger cold rolling mill |
| 12/12/1991 | DE4018105A1 Drive for cold pipe mill stand - with arrangement of connecting rods for easy uncoupling |
| 12/12/1991 | DE4018104A1 Reciprocating drive for cold pilger-mill stand - has sec. crank system with sliding balance weights |
| 12/12/1991 | DE4018103A1 Billet gripper and feed mechanism for cold pipe mill - has spring-loaded gripper blocks, moved using lever operated mechanism contg. collared rolls, bar-form copying template, etc. |
| 12/05/1991 | DE4017348A1 Cold tube rolling mill stand - with movable housing, designed for precise roll setting and easy roll changing |
| 12/04/1991 | EP0459909A1 Process for manufacturing corrosion-resistant seamless titanium alloy tubes and pipes |
| 11/19/1991 | US5066913 Ferrous metal detector for detecting a broken mandrel in a cold pilgering operation |
| 09/11/1991 | EP0445983A2 Flaw detection |
| 07/30/1991 | US5035132 Apparatus for rotating and advancing stock in pilgrim step cold rolling mills |
| 07/04/1991 | DE3943402A1 Stationary shaft keyed drive - has two coaxial crank loops with sliding block coupling to avoid motors or couplings |
| 06/23/1991 | CA2032881A1 Durable method for producing finned tubing |
| 06/12/1991 | EP0432118A2 Low inertia mechanism for repositioning a workpiece in a rocker mill |
| 06/11/1991 | US5022250 Method of pilgrim step rolling |
| 05/21/1991 | US5016460 Durable method for producing finned tubing |
| 02/19/1991 | US4993251 Rollstand having easily replaceable roll dies |
| 02/05/1991 | US4990305 Annealing, expansion |
| 01/09/1991 | EP0407369A2 Rollstand having easily replaceable roll dies |
| 01/02/1991 | EP0405172A1 Single peak radial texture zircaloy tubing |
| 10/30/1990 | US4966022 Method and apparatus for lubricating the mandrel upon the manufacture of seamless tubes by the cold pilger process |
| 09/11/1990 | US4955220 Low inertia mechanism for repositioning a workpiece in a rocker mill |
| 08/23/1990 | DE3905244A1 Method and apparatus for manufacturing strand-like metallic products |
| 07/25/1990 | EP0378981A2 Method and apparatus for reloading a pilgering mill |
| 07/04/1990 | CN1008606B Transmission of cold-rolling mill |
| 06/28/1990 | DE3844162A1 Apparatus for rolling tubes by the cold pilger method |
| 06/05/1990 | US4930328 Method and apparatus for reloading a pilgering mill |
| 05/09/1990 | EP0366648A1 Drive mechanism for cold pilger rolling mills. |
| 02/08/1990 | DE3826120A1 Apparatus for the reciprocating rolling of tubes |
| 01/17/1990 | CN1006467B Thinners for use in aqueons drilling slurry |
| 01/03/1990 | EP0348596A2 A pilgrim-process rolling mill for hot rolling pipes |
| 01/03/1990 | EP0348589A2 A pilgrim-process rolling mill |
| 01/03/1990 | EP0348588A2 A pilgrim-process rolling mill |
| 10/31/1989 | US4876870 Cold rolling |
| 09/26/1989 | CA1259828A1 Method and device for increasing the output of pilger cold rolling mills |
| 09/19/1989 | US4866968 High strength cemented carbide dies and mandrels for a pilgering machine |
| 08/22/1989 | US4858459 Inertia force balancing apparatus |
| 08/22/1989 | US4858458 Drive for a pilger cold-rolling mill with balancing of masses and moments |
| 04/20/1989 | DE3823134C1 Method and apparatus for the production of tubes by the cold-pilger method |
| 04/11/1989 | US4819471 Pilger die for tubing production |
| 02/16/1989 | DE3801621C1 Process for producing thick-walled longitudinally seam-welded steel pipes |
| 01/26/1989 | WO1989000464A1 A method of rolling a tubular metal blank |