Gas-operated cylinder

Details Gas-operated cylinder Gas-operated cylinder

1980-04-04

1982-08-03

Kazenske, Edward R.

Spring devices

Fluid

Expansible-contractible chamber device

92159, 92168, 184 18, 18832217, 222551, 267 6428, F16F 902

Patent

active

043424481

ABSTRACT:
A gas-operated piston cylinder assembly arranged between upper and lower die members of a press. The lower end of the cylinder communicates with a source of high pressure gas and also communicates through a passageway with the upper rod end of the cylinder which is sealed from the surrounding atmosphere. The piston rod has a cross sectional area only slightly smaller than the piston. The passageway between the lower and the upper ends of the cylinder contains a lubricant impregnated member and a by-pass controlled by a check valve which allows gas flowing from the rod end of the cylinder to the lower end thereof to bypass the lubricant impregnated member.

REFERENCES:
patent: 764886 (1904-07-01), Donnenwerth
patent: 1229029 (1917-06-01), Burbage
patent: 2518097 (1950-08-01), Thornhill
patent: 3365188 (1968-01-01), Rumsey
patent: 3791495 (1974-02-01), Keijzer
patent: 4005763 (1977-02-01), Wallis
patent: 4044859 (1977-08-01), Wallis
patent: 4057236 (1977-11-01), Hennells
patent: 4076103 (1978-02-01), Wallis
patent: 4085925 (1978-04-01), Peddinghaus et al.

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