Gas cylinder

Details Gas cylinder Gas cylinder

2006-11-14

2006-11-14

Look, Edward K. (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

C092S258000, C297S344190, C403S353000, C403S397000

Reexamination Certificate

active

07134379

ABSTRACT:
Disclosed is a gas cylinder, for improving sealing characteristics of the gas cylinder and improving convenience in manufacturing, including: a valve having a gas opening/closing pin at a through hole in its center, for intermittently passing a gas, and additionally having a valve dividing body seated on a groove approximately in a lower part of the through hole; a spindle to an upper inside of which the valve is inserted; and a piston inserted to an inside of an open cylinder of the spindle, and having, a step threshold formed at a predetermined distance from an upper end, to which an O-ring for maintaining sealing is fit, and having another step threshold ranging from a lower side of the step threshold to a lower end on an inner lateral surface of the piston, to which an O-ring is fit.

REFERENCES:
patent: 1752544 (1930-04-01), Sparrow
patent: 2476021 (1949-07-01), Bender
patent: 4960354 (1990-10-01), Moore
patent: 5377580 (1995-01-01), Merklein et al.
patent: 6199952 (2001-03-01), Davis
patent: 6276756 (2001-08-01), Cho et al.
patent: 6382077 (2002-05-01), Chen
patent: 6474619 (2002-11-01), Ma

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