| Patents for B23D 21 - Machines or devices for shearing or cutting tubes (3,019) |
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| 05/29/1992 | CA2097174A1 Method and an apparatus for manufacturing closed spacer frames of hollow thin-walled profiles |
| 05/27/1992 | EP0486831A1 Cutting tool for metal tubes with internal optical fibres |
| 05/27/1992 | DE4120349C1 Pipe cut=off mechanism with peripheral cutter wheels - whose support rotating in stationary housing, releasably fitted to retainer body |
| 05/27/1992 | CN2105355U Hand tube cutter |
| 05/26/1992 | CA1301442C Hand-held electric pipe cutter |
| 05/23/1992 | CA2055968A1 Parting-off tool for metal tubes, particularly for stainless steel tubes with internal optical waveguides |
| 05/20/1992 | CN2104722U Manually-operated cutter for small diameter pipe |
| 05/05/1992 | US5110063 Coiling machine for strip-shaped material, more particularly for an edge strip formed in the trimming of steel strips |
| 04/29/1992 | EP0483076A2 New super-rapid centrifugal system for the cutting and preparation of pipes |
| 04/28/1992 | US5107729 Master tool |
| 04/15/1992 | CN2101539U Cutting device for pipe orifice |
| 04/14/1992 | US5103699 Tube cutter |
| 04/01/1992 | CN2100272U Double-track tube-cutter |
| 03/31/1992 | US5099577 Releasable knife axle for tube cutter |
| 03/25/1992 | CN2099629U Cutting tool for pipe |
| 03/24/1992 | US5098225 Cutting/expanding tool |
| 03/24/1992 | US5097576 Traveling steel pipe cutting machine of milling type |
| 03/18/1992 | CN2098979U Round pipe cutting device |
| 02/18/1992 | US5088365 Notching apparatus for a double cut die set |
| 02/18/1992 | US5088196 Pipe cutter |
| 01/21/1992 | US5081768 Pipe cutting |
| 12/31/1991 | US5076125 Rotary arc ram |
| 12/24/1991 | US5074018 Method and device for the cutting of pipes into separate pipe sections |
| 12/04/1991 | CN2089854U Shrimps waist elbow cutting machine |
| 11/28/1991 | WO1991018235A1 Pipe bursting and replacement apparatus and method |
| 11/20/1991 | CN2088915U Electric machine for making mitred cut of tube |
| 11/12/1991 | US5063801 Cut-off machine and method for tubing |
| 11/12/1991 | US5063798 Running circular pipe cutting device |
| 10/30/1991 | CN2087545U Quick pipe-clamping automatic feeding type pipe-cutting knife |
| 10/15/1991 | US5056388 Blind cutting machine |
| 10/08/1991 | US5054342 Pipe machining apparatus |
| 10/08/1991 | CA1290240C Pipe cutter |
| 09/26/1991 | DE4009398A1 Machine for opening oil filters - has oil filter supported and driven against can opener wheel by four discs |
| 09/04/1991 | CN1054205A No-twist slit-rolling approach ("nta") apparatus and method for manufacturing steel reinforcing rod |
| 08/27/1991 | US5042334 Interior pipe cutter with safety extension |
| 08/21/1991 | CN2083090U Hand-operated tube cutter with band tape |
| 08/07/1991 | EP0440327A2 Cut-off machine and method for tubing |
| 07/23/1991 | US5033344 Pipe cutting apparatus |
| 07/23/1991 | US5033153 Simultaneous pipe cutter-sizer |
| 07/09/1991 | CA2033466A1 Cut-off machine and method for tubing |
| 06/26/1991 | EP0338015B1 Method and apparatus for cutting and deburring tubes |
| 06/26/1991 | CN2079546U Manual cutter for cutting saddle shape tube |
| 06/19/1991 | CN2079096U Electric abrasive wheel and saw blade type cutter |
| 06/12/1991 | EP0431280A1 Winding machine for web-like material, especially for a cut-off edge produced by trimming webs |
| 06/11/1991 | US5022155 Hose trimming apparatus |
| 05/29/1991 | DE4037031A1 Multiple tube cutting machine - has mandrels to support tubes before tube clamps are tightened |
| 05/28/1991 | CA1284459C I-t-h pipe cutting tool |
| 05/21/1991 | US5016507 Apparatus for severing a tubular workpiece |
| 05/14/1991 | US5014579 Tube cutting apparatus and methods |
| 05/08/1991 | EP0426615A2 Shearing blade mount for cut-off die set |
| 05/08/1991 | EP0426234A2 Apparatus and method for the in-line cropping and/or chamfering of a plastic tube |
| 05/04/1991 | CA2028087A1 Shearing blade mount for cut-off die set |
| 04/24/1991 | EP0204753B1 Method and device for cutting pipe lengths |
| 04/24/1991 | CN2075564U All-automatic pipe cutting machine |
| 04/24/1991 | CA2026162A1 Window cutter for gas service tie overs |
| 04/23/1991 | US5009140 Clamping apparatus for cut-off die set |
| 04/23/1991 | US5009007 Window cutter for gas service tie overs |
| 04/17/1991 | CN2075118U Differential cutting machine for tube |
| 04/05/1991 | WO1991004818A1 Clamping apparatus for cut-off die set |
| 04/05/1991 | WO1991004817A1 Apparatus for mounting a notching blade |
| 04/05/1991 | CA2067105A1 Clamping apparatus for cut-off die set |
| 04/05/1991 | CA2066680A1 Apparatus for mounting a notching blade |
| 04/02/1991 | US5003853 Cut-off die set |
| 03/21/1991 | WO1991003341A1 Pipe cutting and finishing machine |
| 03/20/1991 | EP0204802B1 Pipe cutter |
| 02/19/1991 | US4993298 Apparatus for mounting a notching blade |
| 02/19/1991 | US4993297 Shearing blade mount for cut-off die set |
| 02/13/1991 | CN2071100U Pipe slope end cutter |
| 02/13/1991 | CN1049121A Spiral welded pipe fly cutting machine |
| 02/07/1991 | WO1991001205A1 Rotary arc ram |
| 01/29/1991 | CA1279508C Bearing arrangement for portable lathe |
| 01/22/1991 | US4986154 Contour cut |
| 01/09/1991 | CN2068871U Swinging pipe cutting apparatus with multi knife cutter |
| 01/08/1991 | US4983071 Pipe bursting and replacement apparatus and method |
| 12/19/1990 | EP0403425A1 Method and apparatus for cutting tubes |
| 12/12/1990 | EP0246257B1 Tool for cutting of plastic tubes |
| 12/04/1990 | US4974436 Cutting tool to facilitate bending of hollow tubing |
| 11/21/1990 | CN2065962U Quick pipe-cutting unit |
| 11/20/1990 | US4970925 Die press with automatically controlled workpiece holder |
| 11/13/1990 | US4969379 Disposable needle and syringe destructor unit |
| 11/07/1990 | CN2065107U Chain extruding cutter |
| 11/07/1990 | CN1010289B Low stress impact shearing method |
| 10/30/1990 | US4966061 Tube cutting apparatus |
| 10/23/1990 | US4964328 Notching blade assembly |
| 10/23/1990 | US4964327 Shearing blade mount for cut-off die set |
| 10/10/1990 | EP0391747A1 Single cut die set |
| 10/03/1990 | CN2063059U Hand-held electric tube cutter |
| 09/25/1990 | US4958434 Holding device and shearing device used in concert for hand held shearing of thin-wall tubes |
| 09/18/1990 | CA1274169A1 Tube cutoff die set |
| 09/12/1990 | CN2061881U Hydraulic chain type tube cutting machine |
| 09/04/1990 | US4953377 Method and apparatus for cutting and deburring tubes |
| 09/04/1990 | US4953292 Hand-holdable tube cutting device |
| 08/29/1990 | EP0384721A1 Pipe cutting device |
| 08/29/1990 | EP0384625A1 Apparatus for forming spiral pipe |
| 08/28/1990 | US4951538 Single cut die set |
| 08/23/1990 | WO1990009252A1 Apparatus for machining cylindrical objects |
| 08/02/1990 | DE3902244A1 Device for the chipless cutting-off of annular parts from a tube |
| 07/17/1990 | US4941378 Method and apparatus for rapid repetitive cutting |
| 07/10/1990 | US4939967 Cut-off machine |
| 07/10/1990 | US4939964 Low-clearance pipe lathe |