Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1993-09-30
1994-12-13
Hepperle, Stephen M.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
251310, 251312, F16K 2402
Patent
active
053721586
ABSTRACT:
A valve with a backflow preventer has a valve housing with a fluid inlet, a main flow channel, and a fluid outlet formed therein. A valve element is provided in the valve housing to selectively actuate the valve. The valve element is rotatable between an open position in which a fluid flow path exists between the fluid inlet and the fluid outlet along the main flow channel and a closed position in which no fluid flow path exists between the fluid inlet and the fluid outlet. A chamber is formed in the valve housing in a position which is offset from the main flow channel. The chamber has an opening in fluid communication with the atmosphere, and a ball is provided in the interior of the chamber. The ball is movable between a first position in which the ball prevents fluid backflow from the fluid outlet to the fluid inlet and a second position in which the ball substantially blocks the opening in the chamber.
REFERENCES:
patent: D181038 (1957-09-01), Britton
patent: D183042 (1958-06-01), Fuglie
patent: D285478 (1986-09-01), Hengesbach
patent: D288229 (1987-02-01), Beal et al.
patent: D299520 (1989-01-01), Pechler
patent: D318903 (1991-08-01), Lenberg
patent: D325961 (1992-05-01), Hayes
patent: 2021342 (1935-11-01), Wesson
patent: 2173070 (1939-09-01), Brown
patent: 2261886 (1952-12-01), Mueller
patent: 2631002 (1953-03-01), Mueller
patent: 2715910 (1955-08-01), Kass
patent: 2929406 (1960-03-01), Anderson
patent: 3058718 (1962-10-01), Johnson
patent: 3106935 (1963-10-01), Gatzke
patent: 3424184 (1969-01-01), Brimley et al.
patent: 3563512 (1971-02-01), Hauffe
patent: 3770016 (1973-11-01), Johnstone et al.
patent: 3815871 (1974-06-01), Carlson
patent: 3889923 (1975-06-01), Saville et al.
patent: 4027698 (1977-06-01), Weinhold
patent: 4287905 (1981-09-01), Iglesias
patent: 4614330 (1986-09-01), Kalsi et al.
patent: 4806258 (1989-02-01), Duncan
patent: 4927116 (1990-05-01), Schwarz et al.
patent: 5148839 (1992-09-01), Kirwan et al.
GF. product brochure illustrating five valves, two pages. An actual valve is believed to be sold by G.F. (no date).
Hepperle Stephen M.
Shop Vac Corporation
LandOfFree
Valve with backflow preventer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve with backflow preventer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve with backflow preventer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1187608