| Patents for B21D 39 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders (11,420) |
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| 12/03/1991 | US5069058 Swaging tool |
| 12/03/1991 | CA1292707C Bottom seam for a pail |
| 11/27/1991 | CN2089374U End upsetting device for diesel engine high pressure oil tube |
| 11/19/1991 | US5065608 Hand-operated batten seamer tool |
| 11/12/1991 | US5064726 Hollow composite member |
| 11/05/1991 | US5062199 Apparatus for radially expanding and anchoring sleeves within tubes |
| 10/31/1991 | DE4033758A1 Screening system for computer door - has spring strip fixed along edge that have series of contact fingers |
| 10/30/1991 | CN1055682A Method for producing flat bellows |
| 10/23/1991 | EP0452791A1 Press tool |
| 10/23/1991 | EP0452614A1 A composite panel |
| 10/17/1991 | WO1991015331A1 Hydraulic assembly tool with improved load bearing arrangement for tube fittings |
| 10/17/1991 | WO1991015316A1 Clinching tool for sheet metal joining |
| 10/16/1991 | EP0452086A1 Payload retention |
| 10/16/1991 | EP0451930A2 Process for manufacturing a fixed, sealed pipe connection |
| 10/16/1991 | EP0451806A1 Press tool |
| 10/16/1991 | EP0451417A2 Crimping Apparatus |
| 10/15/1991 | US5056351 Crimping device and adjusting ring |
| 10/15/1991 | CA1290596C Tubular camshaft assemblies, method and apparatus |
| 10/15/1991 | CA1290563C Method and apparatus for securing parts to a hollow member |
| 10/13/1991 | CA2040225A1 Method and apparatus for producing a locked, tight pipe-connection |
| 10/08/1991 | US5054756 Device for hydraulic expansion |
| 10/08/1991 | US5054637 Can end for a tubular container |
| 10/03/1991 | WO1991014894A1 Swagable fitting |
| 10/01/1991 | US5052845 Multi-layer shaft |
| 10/01/1991 | CA1289776C Camshaft and method for its production |
| 10/01/1991 | CA1289735C Die set for securing a self-attaching element |
| 09/25/1991 | CN2085268U Tube expander for fin and tube type radiator |
| 09/24/1991 | US5051020 Leak proof joint |
| 09/24/1991 | US5050422 Bending apparatus for bending a marginal flange on a workpiece |
| 09/24/1991 | CA1289391C Joining metal tubes |
| 09/24/1991 | CA1289347C Apparatus for joining pieces of sheet metal |
| 09/18/1991 | EP0447251A2 Tube and method of forming same |
| 09/18/1991 | EP0446964A2 Apparatus for hydraulic expansion |
| 09/18/1991 | CN2084852U Crimping arris-presser |
| 09/12/1991 | DE4007161A1 Flat metal component-joining method - involves cold-shaping along butt-joint between mating connecting portions |
| 09/10/1991 | US5046350 Apparatus for attaching surgical suture components |
| 09/10/1991 | US5046349 Expansion tool for hollow working parts |
| 09/10/1991 | US5046228 Tool set for connecting sheet metal pieces |
| 09/03/1991 | US5044190 Base for rotatably supporting a collet crimping machine |
| 09/03/1991 | CA1288221C Rotary crimping tool |
| 08/20/1991 | US5040405 Tube expander |
| 08/20/1991 | US5040396 Portable internal roller swager |
| 08/20/1991 | US5040278 Power-driven pincer-type tool holder for use in handling apparatuses |
| 08/14/1991 | CN1013482B Method and apparatus for the production of frusto-pyramidal can bodies |
| 08/13/1991 | US5038597 Bending apparatus for bending a marginal flange on a workpiece |
| 08/13/1991 | US5038450 Assembled shaft |
| 08/13/1991 | CA1287483C Process and device for lining a peripheral tube of a steam generator |
| 08/08/1991 | WO1991011273A1 Antifretting coating for a bushing in a coldworked joint |
| 08/08/1991 | DE4003273A1 Two=part housing, e.g. for engine idling air demand controller - has collar forming shape-locking joint with cross-matched region of second part |
| 08/08/1991 | DE4001963C1 Plate making system - has strips with sections of same length cut preferably from band and connected to each other along longitudinal sides |
| 08/07/1991 | EP0439764A2 Process for manufacturing hollow one-piece metal elements |
| 08/06/1991 | CA1287227C Hollow shaft having drive elements with axially varied material properties being secured on the hollow shaft by expansion of the hollowshaft |
| 07/30/1991 | US5035136 Bending apparatus for bending a margin flange |
| 07/30/1991 | CA1287086C Paint drain closure, attachment tool and method |
| 07/30/1991 | CA1286934C Fuel pipe device for motor vehicles and process for producing same |
| 07/25/1991 | WO1991001831A1 Process and device for making a plate from a strip |
| 07/25/1991 | CA2063719A1 Process and device for making a plate from a strip |
| 07/24/1991 | CN1013253B Special metal pipe impact extrusion thermal diffusion welding technology |
| 07/23/1991 | US5033190 Method for controlling a tube expander |
| 07/16/1991 | US5032097 Apparatus for assembling an electron emissive part of a cathode |
| 07/16/1991 | US5031442 Punch anvils for sheet fastening systems |
| 07/16/1991 | US5031301 Method for connecting a reinforced hose with a coupling |
| 07/03/1991 | EP0435491A2 Method of joining cylinder bore liners to an engine block |
| 07/02/1991 | US5027635 Channel hot-forming apparatus |
| 07/02/1991 | US5027507 Method for controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear generator |
| 07/02/1991 | US5027503 Apparatus for joining sheet material |
| 07/02/1991 | US5027489 Multiple pistons swaging tool |
| 06/28/1991 | CA2028084A1 Method of joining cylinder bore liners to an engine block |
| 06/25/1991 | US5025546 Method of joining pipes |
| 06/13/1991 | DE4038979A1 Jacketed pipe for IC engine catalytic exhaust system |
| 06/12/1991 | EP0431649A2 Method for manufacturing a double-walled pipe, especially for exhaust devices of internal combustion engines provided with catalyst. |
| 06/11/1991 | US5022437 Hollow plug for blocking a heat exchanger tube |
| 06/11/1991 | US5022254 Method and device for the manufacture of can bodies by extension, including expansion of the diameter and reduction of the thickness of the sheet metal, starting out from a can body with smaller diameter, made of thicker sheet metal |
| 06/11/1991 | US5022253 Hand-held punch pliers |
| 05/14/1991 | US5014572 Assembled crankshaft |
| 05/08/1991 | EP0426378A1 Apparatus for attaching surgical suture components |
| 05/08/1991 | EP0426377A1 Apparatus for attaching surgical suture components |
| 05/07/1991 | US5012649 Power actuator |
| 05/04/1991 | CA2026562A1 Apparatus for attaching surgical suture components |
| 05/04/1991 | CA2026534A1 Apparatus for attaching surgical suture components |
| 04/25/1991 | DE4018602C1 Car door made as single pressing - is folded together along straight fold line to form inner and outer panels |
| 04/24/1991 | EP0423544A1 Method of connecting two components |
| 04/23/1991 | US5009002 Method for radially expanding and anchoring sleeves within tubes |
| 04/16/1991 | US5007667 Crimped sleeve to tube joint |
| 04/11/1991 | DE3932532A1 Hydraulically operated tool-holder and actuator - has double-acting cylinders with opposed strokes for generating symmetrical thrust during riveting or welding operations |
| 04/09/1991 | US5005398 Hemming machine |
| 04/09/1991 | CA1282616C Method of securing a flare composition sleeve in a blind borehole at the tail portion of a projectile body |
| 04/02/1991 | US5004370 Hollow shaft having drive elements with axially varied material properties being secured on the hollow shaft by expansion of the hollow shaft |
| 03/20/1991 | EP0417674A1 Expander tool for hollow workpieces |
| 03/19/1991 | US5000370 Method and apparatus for the production of frusto-pyramidal can bodies |
| 03/19/1991 | US5000233 Method and machine for automatically mounting and tightening clamps |
| 03/19/1991 | US5000137 Combustion engine push rod and a method of manufacturing said push rod |
| 03/19/1991 | CA1281533C Process and device for remotely lining a steam generator tube of apressurized water nuclear reactor |
| 03/15/1991 | CA2024394A1 Expansion tool for hollow working parts |
| 03/07/1991 | WO1991002606A1 A tool in kit form for forming conduit ends |
| 02/22/1991 | WO1991002605A1 Stretch shaping method and apparatus |
| 02/19/1991 | US4993145 Apparatus for gripping tubes in multirow plate fin coils |
| 02/14/1991 | DE3844746A1 Connecting rod |
| 02/12/1991 | CA1280106C Method of manufacture of manifolds and manifold provided by such method |
| 02/05/1991 | US4990305 Annealing, expansion |