Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1985-04-08
1986-11-18
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
13754313, 13754323, 137554, 116271, 73744, F16K 3700
Patent
active
046229949
ABSTRACT:
The present invention provides a fluid handling device which operates as a combination check valve and fluid flow meter. The fluid handling device comprises a housing having an inlet, an outlet and a fluid passageway formed therebetween. A valve seat is contained within the housing in series with the fluid passageway while a valve member cooperates with the valve seat and is movable between an open and a closed position. A compression spring urges the valve member towards its closed position so that whenever the fluid pressure at the outlet exceeds the fluid pressure at the inlet, the valve moves to its closed position thus preventing reverse fluid flow through the device. Preferably, a tapered surface on the valve member forms a variable area opening at the valve seat which increases in area as the valve member moves from its closed and towards its open position. An indicator needle is mechanically connected to the valve member to produce an exteriorly visible signal of the position of the valve member which, in turn, is representative of the fluid flow rate through the fluid handling device.
REFERENCES:
patent: 311833 (1885-02-01), Hoxie
patent: 1675849 (1928-07-01), Fultz
patent: 2853880 (1958-09-01), Redding
patent: 2879794 (1959-03-01), Costello
patent: 3039658 (1962-06-01), Hoelle
patent: 3422791 (1969-01-01), Rosaen
patent: 3707987 (1973-01-01), Gordon
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