B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
164/120
B26D 5/12 (2006.01) B21D 28/20 (2006.01) B30B 15/18 (2006.01)
Patent
CA 1106753
GAl-4P-5920-1 SHOCK DAMPENING SYSTEMS FOR PRESSES Abstract of the Disclosure A hydraulic fluid shock dampening system is disclosed for a shearing press to minimize shock and vibration imposed on the press following breakthrough of the material being sheared by cutting die components carried by the press bed and slide. The system includes cylinder and piston units interposed between the press bed and slide each providing a variable volume fluid receiving chamber from which fluid under pressure is expelled during movement of the slide to- ward the bed to achieve a shearing operation. A flow sensitive shutoff valve is responsive to accelerated movement of the slide upon breakthrough to block fluid flow from the chambers and thus restrain further slide movement toward the press bed. In preferred structural embodiments of the system, the cylinder and piston units, shutoff valve and fluid pressure accumulator components are structurally associated with a bolster plate mountable on a press, or with die components mountable on a bolster plate.
336093
Gowling Lafleur Henderson Llp
Gulf & Western Manufacturing Company
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