Spring devices – Fluid – Expansible-contractible chamber device
Patent
1981-08-03
1984-02-14
Stoner, Jr., Bruce H.
Spring devices
Fluid
Expansible-contractible chamber device
267130, 72433, 83617, 92 84, 92 85A, 92144, F16F 900, F16F 708, B21J 712, B26D 706
Patent
active
044311729
ABSTRACT:
A shock absorbing device in a press is formed by having a telescopically sliding member fastened to the punch plate of the press and a stopper member fastened to the die plate of the press and placing an oil of high viscosity between the post and the outer cylinder of the telescopically sliding member. This shock absorbing device damps the unloading impact produced when the punch of the press collides with a workpiece and fractures it and, thereby, abates the noise generated from the press, the tool and the workpiece.
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Aoi Kazuyoshi
Hatsukano Kanichi
Sano Toshio
Soda Choichiro
Agency of Industrial Science & Technology
Kelman Kurt
Ministry of International Trade & Industry
Oberleitner Robert J.
Stoner Jr. Bruce H.
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