Method and device for press overload protection

Details Method and device for press overload protection Method and device for press overload protection

1991-09-10

1993-06-08

Yost, Frank T.

Cutting

Processes

83543, 836391, 91468, 100 35, 100 53, 137 70, 192130, 192150, B30B 1528

Patent

active

052169596

ABSTRACT:
A method and a device for protecting against a press overload is disclosed whereby, when an excessive pressure which exceeds a specified hydraulic pressure is transmitted to a pressure chamber of a press cylinder, this excessive pressure activates the punching of a shear plate by a shear piston and the excessive pressure is released by the shear piston.

REFERENCES:
patent: 2071375 (1937-02-01), Allen
patent: 2620815 (1952-12-01), Margraf et al.
patent: 4022236 (1977-12-01), Dumont et al.
patent: 4030336 (1977-06-01), Grigorenko et al.
patent: 4096798 (1978-06-01), Moskalik
patent: 4694716 (1987-09-01), Sakamoto

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