Valves and valve actuation – Rotary valves
Patent
1997-12-09
1999-07-20
Fox, John
Valves and valve actuation
Rotary valves
251185, F16K 504
Patent
active
059246774
ABSTRACT:
The present invention relates to an improved disk-type faucet that can be used to replace the ball-type faucet. The faucet includes a switching cylinder that can be rotationally disposed within the housing. The switching cylinder includes a controlling stem atop. The switching cylinder further includes a pair of annular grooves that are located below the controlling stem and each of them being disposed with an O-ring, respectively. The lower end of the switching cylinder includes a semicircular tab and a resilient plate for blocking the water flow. The semicircular tab is further enveloped with a bushing that is fixedly fastened by the resilient plate. By the biasing action of the resilient tab, the bushing and the resilient plate are provided with an allowable movement within the housing such that the wearing resulted from over-tight can be therefore prevented and the manipulation can be more conveniently conducted to open or close the faucet. Besides, the housing is integrally formed with threaded portions that can be more conveniently assembled and used to replace the ball-type faucet. The faucet features a compact and simplified configuration that may reduce the manufacturing cost.
REFERENCES:
patent: 3212752 (1965-10-01), Kast
patent: 4073471 (1978-02-01), Lehtinen
patent: 4700736 (1987-10-01), Sheen
patent: 4924903 (1990-05-01), Orlandi
patent: 4948095 (1990-08-01), Campau
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