Nitrogen die cylinder

Details Nitrogen die cylinder Nitrogen die cylinder

1984-06-14

1986-02-25

Maslousky, Paul E.

Spring devices

Fluid

Expansible-contractible chamber device

267 6411, 267130, 92134, F16F 902

Patent

active

045724890

ABSTRACT:
A piston-cylinder unit for use in a die is threaded into a port of a nitrogen manifold. The piston has a seal thereon slideably engaging the cylinder bore and has a rod projecting out one end of the cylinder, the rod being biased by the gas pressure at the threaded end of the cylinder into engagement with a die member reciprocated in response to reciprocation of the ram of the press in which the die is mounted. The portion of the cylinder threaded into the manifold has a bleed passageway therethrough which communicates with the interior of the cylinder below the seal on the rod when the press ram is at bottom dead center position and with the interior of the cylinder above the seal on the piston when the piston rod is fully retracted.

REFERENCES:
patent: 1229029 (1917-06-01), Burbage
patent: 3401604 (1968-09-01), Blatt et al.
patent: 3789737 (1974-02-01), Burnett
patent: 4342448 (1982-08-01), Wallis
patent: 4457498 (1984-07-01), Pauliukonis

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