Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1978-05-08
1980-07-29
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
166322, 251 635, E21B 4312, F16K 31163
Patent
active
042146062
ABSTRACT:
A subsurface safety valve assembly for connection in a well pipe, including a valve member disposed in a valve body having a bore or passageway therethrough, a pair of spaced apart and oppositely facing valve seats in surrounding relation to an intermediate portion of the passageway, the valve positioned thereat and operable to open and close said passageway, a space within the valve body outwardly of the passageway therethrough, a control frame guidably movable within the space and having a piston associated therewith adapted to define first and second variable capacity pressure chambers within the space, means for moving the control frame in opposite longitudinal directions to open and close the valve, the means for moving the control frame including first and second ports, the first port providing fluid communication between the first variable capacity pressure chamber and an external source of pressure fluid, the second port providing fluid communication between the second variable capacity pressure chamber and the passageway through the valve body.
REFERENCES:
patent: Re25471 (1963-11-01), Fredd
patent: 2998077 (1961-08-01), Keithahn
patent: 3007669 (1961-11-01), Fredd
patent: 3606927 (1971-09-01), True et al.
patent: 3724475 (1973-04-01), Ruppel
patent: 3732925 (1973-05-01), Kanady
patent: 3741249 (1973-06-01), Leutwyler
patent: 3854502 (1974-12-01), Mott
patent: 3868995 (1975-03-01), Crowd
patent: 3993136 (1976-11-01), Mott
patent: 4074761 (1978-02-01), Mott
patent: 4140153 (1979-02-01), Deaton
patent: 4149698 (1979-04-01), Deaton
Deaton Thomas M.
Kohn Gary A.
Chambers A. Michael
Otis Engineering Corporation
Schwadron Martin P.
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