Fluid handling – Destructible or deformable element controlled – Destructible element
Patent
1985-03-29
1986-12-02
Weakley, Harold W.
Fluid handling
Destructible or deformable element controlled
Destructible element
1375563, 13761404, 2511492, 251337, F16K 1304
Patent
active
046257462
ABSTRACT:
A sealing mechanism for a pair of conduits held together by means of a frangible connector is described. Each conduit has a center pivoted butterfly valve with valve discs which are spring biased to a closed position. The valve discs are mutually abutting and normally hold each other open, but are released when the frangible connector is broken. Each disc is pivoted about an offset from a pivot support member, and the inner conduit walls are tapered between the open and closed positions of the disc so as to reduce the turning friction between the disc and the conduit walls. A mechanism for positively closing and latching the disc is a closed position is described. This mechanism is contained in a housing which is sealed off from the fluid containing portion of the conduit.
REFERENCES:
patent: 1332000 (1920-02-01), Pfau
patent: 2824755 (1958-02-01), Lamphear
patent: 3077330 (1963-02-01), Lamphear
patent: 3276471 (1966-10-01), Hagner
patent: 3409269 (1968-11-01), Fawkes
patent: 4141537 (1979-02-01), Daghe
patent: 4193295 (1980-03-01), Curran
patent: 4361165 (1982-11-01), Flory
Calvin John H.
Wakasa Jack Y.
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