Fluid handling – Destructible or deformable element controlled
Patent
1976-01-28
1978-09-05
Schwadron, Martin P.
Fluid handling
Destructible or deformable element controlled
89 1B, 13762548, 251 61, 251 611, 251191, 251DIG2, F16K 702, F16K 710, F16L 5512
Patent
active
041112210
ABSTRACT:
A normally open valve construction utilizes a valve housing defining a fluid passageway extending through the housing between at least two ports, and an expandible, metallic bladder within the housing. The bladder is mounted in non-obstructing relationship with the fluid passageway when the valve is open and is expanded across the passageway in flow-obstructing relationship when the valve is closed. The bladder in the expanded condition has a generally tubular configuration and is closed at one end. In the non-expanded condition, one portion of the tubular configuration is folded coaxially within an adjacent portion to shorten its axial length and to remove all portions of the bladder from the fluid passageway. A pyrotechnic squib or other fluid pressure generator discharges within the tubular configuration to extend the bladder into the fluid passageway and close the valve.
REFERENCES:
patent: 2557448 (1951-06-01), Mathisen
patent: 2781051 (1957-02-01), Hawley
patent: 3013571 (1961-12-01), Fulton
patent: 3106131 (1963-10-01), Barr et al.
patent: 3422832 (1969-01-01), Moulton
patent: 3478760 (1969-11-01), Hosek
patent: 3890994 (1975-06-01), Olsen
Gerard Richard
Schwadron Martin P.
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