Valves and valve actuation – With correlated flow path – Tank
Patent
1992-09-02
1993-09-14
Schwadron, Martin P.
Valves and valve actuation
With correlated flow path
Tank
251241, 137797, F16K 5100
Patent
active
052441814
ABSTRACT:
A high flow emergency valve contained within an interior of a storage tank having an opening and a valve seat about the opening including a housing member for sealing and unsealing the valve seat, a push rod member for engagement with and activation of the housing to seal and unseal the valve seat, the push rod including a first portion positioned within the housing and a second portion extending out of a housing aperture to the tank exterior for manipulation from the exterior of the tank to open and close the valve seat, a sleeve member for substantially enclosing the first portion of the push rod within the housing and providing sealed sliding engagement between the push rod and the sleeve, a connecting member for attaching a portion of the sleeve against movement with respect to the valve seat, an engagement member between the housing and the sleeve for sealed sliding movement of the housing with respect to the sleeve, and a biasing member for maintaining the housing in a normally closed position with respect to the valve seat and providing a spring bias to the push rod during manipulation to unseal the valve seat.
REFERENCES:
patent: 1650406 (1927-11-01), Welcker
patent: 2237377 (1941-04-01), Thwaits
patent: 3399695 (1968-09-01), Stehlin
patent: 3503416 (1970-03-01), Clarkson
patent: 4009862 (1977-03-01), DeFrees
patent: 4180242 (1979-12-01), Reedy
patent: 4335744 (1982-06-01), Bey
patent: 4431162 (1984-02-01), Carlson
patent: 4643219 (1987-02-01), Schmitt et al.
patent: 4934403 (1990-06-01), Mooney et al.
patent: 5099870 (1992-03-01), Moore et al.
"6".times.4" High Flow Emergency Valve," Betts Indus., Inc. Sep. 1990 Section 30, p. 9A.
Knappco Corporation
Lee Kevin L.
Schwadron Martin P.
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