Shock damping device for flush valve mechanism

Details Shock damping device for flush valve mechanism Shock damping device for flush valve mechanism

1993-09-01

1995-03-14

Phillips, Charles E.

Baths, closets, sinks, and spittoons

Flush closet

Manual selection of the amount of flush

E03D 114

Patent

active

053966651

ABSTRACT:
A flush valve mechanism for controlling the flushing action of water through the water outlet of a flush cistern, comprising, in combination: (a) a water outlet valve to effect the flushing action; (b) a buoyant device, at least indirectly engaging the outlet valve, to exert a maintaining force thereon at the completion of the lifting thereof and to hold it open while the cistern is emptying and until the completion of a predetermined flushing action; and (c) a shock damping device attachable to the outlet valve and, comprising an inverted cup-shaped member and a body member, the body member being configured to freely move within the inner surface of the cup, the cup-shaped member and the body member defining therebetween a changeable volume of substantially surrounded space and having restricted openings for the passage of water into and out of the space, whereby upon attachment of the device to the valve, any vertical movement of the water outlet valve will also be affected by the device, whereby, upon the emptying of the cistern to a predetermined level below the buoyant means and the consequent completion of the exertion of the maintaining force on the water outlet valve by the buoyant means, impact shock of the reseating of the valve disk on the valve seat is reduced by the resistance of the water forced through the restricted openings.

REFERENCES:
patent: 364289 (1887-06-01), Phillips
patent: 622418 (1899-04-01), Croswell
patent: 2879521 (1959-03-01), Brasher
patent: 3955218 (1976-05-01), Ramsey
patent: 4101986 (1978-07-01), Ng et al.
patent: 4138749 (1979-02-01), Clark
patent: 4171547 (1979-10-01), Raz
patent: 4305163 (1981-12-01), Raz
patent: 4587679 (1986-05-01), Chen

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