| Patents for B21D 1 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling (4,692) |
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| 09/11/1979 | US4167108 Adjustable hole-engaging hook device |
| 09/04/1979 | CA1061870A1 Electric electrode device for taking out dents |
| 08/28/1979 | CA1061234A1 Accessories for an apparatus for repairing and straightening |
| 06/19/1979 | US4158303 Frame and body straightening equipment |
| 06/05/1979 | US4157027 Spool straightening apparatus |
| 05/22/1979 | US4155242 Core tools |
| 05/08/1979 | US4152913 Straightening machine for straightening sheet metal and flat materials |
| 05/01/1979 | US4151974 Anchor |
| 05/01/1979 | US4151737 Apparatus for repairing and straightening |
| 05/01/1979 | CA1053553A1 Body pulling device |
| 04/10/1979 | US4148210 Self-tightening pull clamp for attaching to sheet metal flanges and the like |
| 03/20/1979 | US4144783 Apparatus for blanking sheet materials |
| 03/20/1979 | US4144731 Machine for flattening sheet metal |
| 02/13/1979 | US4138877 Accessories for an apparatus for repairing and straightening |
| 02/13/1979 | US4138876 Truck frame alignment apparatus |
| 02/13/1979 | CA1048378A1 Double-acting hydraulic cylinder having two pistons arranged for coaxial movement relative thereto |
| 01/30/1979 | CA1047381A1 Vehicle axle straightening system |
| 01/23/1979 | US4135379 Portable head for electromagnetic pulling |
| 11/28/1978 | CA1043324A1 Demolition tool |
| 10/31/1978 | US4122699 Tool for removing dents from sheet metal |
| 10/24/1978 | US4121442 Apparatus for restoring crushed tubes |
| 10/17/1978 | US4120189 Pulling hook apparatus |
| 09/26/1978 | US4116035 Dent puller |
| 09/26/1978 | US4116031 Flux concentrator for electromagnetic pulling |
| 08/22/1978 | US4107974 Method for straightening automobile bodies |
| 08/22/1978 | US4107970 Machine for flattening strip metal |
| 08/15/1978 | US4106325 Chisel clamp for use in straightening automobile bodies |
| 08/01/1978 | US4103531 Method and apparatus for correcting bent strut misalignment |
| 07/18/1978 | US4100975 Power booster |
| 06/13/1978 | USRE29664 Hydraulic pulley apparatus |
| 05/30/1978 | US4091649 Method of uncoiling and straightening strip material |
| 05/23/1978 | US4090391 Press construction |
| 05/16/1978 | US4089201 Silent dent puller |
| 05/16/1978 | US4089197 Machine for flattening sheet metal |
| 05/09/1978 | US4088006 Automotive vehicle body and frame straightening apparatus |
| 05/09/1978 | US4088002 Method and means of straightening cycle frames |
| 05/09/1978 | US4087997 Pipe end shaper tool |
| 04/11/1978 | US4083217 Overlapping gear drive for straightening machines |
| 03/21/1978 | US4079615 Tensioning apparatus for continuous strip, especially metal strip and bands |
| 02/21/1978 | US4074555 Method of and apparatus for improving hot-rolled sheet-metal strips |
| 02/14/1978 | US4073181 Automobile body dent puller tool |
| 02/07/1978 | US4072042 Automatic metal puller |
| 01/31/1978 | US4070899 Metal deforming apparatus for purposes such as automobile repairs |
| 01/10/1978 | US4067252 Machine tool with cylindrical assembly units |
| 01/10/1978 | US4067222 Vehicle axle straightening system |
| 01/10/1978 | US4067215 Method for producing steel plate from a hot rolled steel coil |
| 01/03/1978 | US4066243 Vehicle body part holding and positioning device |
| 12/06/1977 | US4061007 Electromagnetic dent remover with electromagnetic localized work coil |
| 11/29/1977 | US4060221 Double-acting hydraulic cylinder having two pistons arranged for coaxial movement relative thereto |
| 11/15/1977 | US4057994 Automobile body pulling tool |
| 11/15/1977 | US4057989 Method for levelling a metal strip or sheet |
| 11/01/1977 | US4055981 Portable guardrail straightener for field use |
| 10/25/1977 | US4055061 Apparatus for reforming and straightening vehicles |
| 09/27/1977 | US4050287 Method for vehicle alignment |
| 09/27/1977 | US4050271 Apparatus for repairing indentions in a rigid skin |
| 09/20/1977 | US4048835 Method of punching a small hole in a precision mechanics workpiece |
| 09/13/1977 | US4047416 Uncoiling and straightening apparatus for strip material |
| 09/13/1977 | US4047278 Method of manufacturing hammer |
| 08/30/1977 | US4044590 Dented article smoothing and shrinking arrangement |
| 08/23/1977 | US4043162 Roller assembly for sheet-bending head and method of making roller bearings therefor |
| 08/09/1977 | US4040287 Pulling tool and method |
| 07/26/1977 | US4037456 Auto body clamp |
| 07/26/1977 | US4037448 Metal leveler tool |
| 07/12/1977 | US4034594 Variable impact tool |
| 07/05/1977 | US4033165 Apparatus for controlling flatness of metal sheet during rolling |
| 05/31/1977 | US4026139 Metal surface repair tool |
| 05/17/1977 | US4023394 Vehicle alignment apparatus |
| 04/19/1977 | US4018076 Fin comb with interchangeable heads |
| 01/25/1977 | US4004444 Pipe maintenance apparatus |
| 01/18/1977 | US4003239 Structure for accommodating realignment of deformed vehicles |
| 01/04/1977 | US4000639 Tool and method for trueing wheel rims |
| 12/28/1976 | US3999419 Body and frame straightening machine |
| 12/21/1976 | US3998085 Elevator bucket shape restoration tool |
| 12/21/1976 | US3998081 Electromagnetic dent puller |
| 11/23/1976 | US3992962 Driving train for straightening rolls |
| 11/23/1976 | US3992921 Body sill clamp |
| 11/23/1976 | US3992919 Sheet metal pulling power head and stand |
| 10/19/1976 | US3986383 Expander tool |
| 10/12/1976 | US3985014 Portable apparatus for use on a wrecked vehicle by a rescue squad |
| 09/14/1976 | US3979981 Cryogenic shearing of metal |
| 08/31/1976 | US3977230 Apparatus for repairing indentions in a rigid skin |
| 08/10/1976 | US3973423 Belt drive system for high speed straightening machines |
| 08/10/1976 | US3973315 Demolition tool |
| 07/27/1976 | US3971244 Impact tool |
| 06/15/1976 | US3962894 Method of and apparatus for stretching a metal strip |
| 06/08/1976 | US3961519 Hammer for sheet metal |
| 05/25/1976 | US3959619 Method of drawing-in or flattening dents in sheet metal |
| 05/25/1976 | US3958439 Method for recovering ductility of a cold rolled metal strip |
| 05/11/1976 | US3955397 Apparatus for pulling deformations from sheet metal and metal frames of vehicles and the like |
| 05/11/1976 | US3955249 Clamping device |
| 02/03/1976 | US3935725 Automobile frame and body repairing apparatus |
| 01/27/1976 | US3934448 Racked pipe reamer |