Canister flush valve

Details Canister flush valve Canister flush valve

2005-11-07

2009-12-22

Nguyen, Tuan N (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet

Tank only

C004S390000, C004S391000

Reexamination Certificate

active

07634821

ABSTRACT:
A canister type flush valve has an upright cup-shaped hollow float working under buoyancy forces without a captured air volume that controls the valve during a flush cycle. Hooded bleed openings at a bottom wall of the float can be sized and numbered to selectively control the closuring timing of the valve. Baffles of the hood bleed openings redirect water bleeding into the float to prevent the water from spraying up against the top of the tank. The geometry of a seal retaining groove is designed to reduce leakage at the float/seal interface. For example, the groove has an annular wall with a compound profile forming a non-cylindrical, preferably serpentine, seal contact area. The seal is backed by a slotted flange located just above the retaining groove.

REFERENCES:
patent: 1871579 (1932-08-01), Bashara
patent: 1895786 (1933-01-01), Cobb
patent: 2239923 (1941-04-01), May
patent: 2795237 (1957-06-01), Corbin, Jr.
patent: 3080567 (1963-03-01), King
patent: 3172129 (1965-03-01), Fulton et al.
patent: 3267491 (1966-08-01), Snyder et al.
patent: 3383711 (1968-05-01), Swanson
patent: 3555572 (1971-01-01), Thomas
patent: 3596293 (1971-08-01), Thomas
patent: 3890652 (1975-06-01), Fulton
patent: 3916455 (1975-11-01), Longdin
patent: 4298204 (1981-11-01), Jinkins
patent: 4357720 (1982-11-01), Stahli
patent: 4557000 (1985-12-01), Strangfeld
patent: 4604763 (1986-08-01), Sprang
patent: 4882793 (1989-11-01), Thompson
patent: 5265282 (1993-11-01), Schmucki
patent: 5305474 (1994-04-01), Nardi et al.
patent: 5329647 (1994-07-01), Condon
patent: 5349981 (1994-09-01), Schmucki et al.
patent: 5502846 (1996-04-01), Chelchowski et al.
patent: 5653252 (1997-08-01), Steg et al.
patent: 5657494 (1997-08-01), Diethelm
patent: 5896593 (1999-04-01), Mizrahi
patent: 5926861 (1999-07-01), Frost
patent: 6276552 (2001-08-01), Vervisch
patent: 6457187 (2002-10-01), Andersson et al.
patent: 6715162 (2004-04-01), Han et al.
patent: 6728975 (2004-05-01), Han
patent: 6874172 (2005-04-01), Frost
patent: 6910232 (2005-06-01), Antunez
patent: 1477618 (2004-11-01), None
PCT International Search Report, and Written Opinion.

Affiliated with

Also associated with

Rating

Canister flush valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Canister flush valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Canister flush valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4086861