Disc check valve

Details Disc check valve Disc check valve

2006-01-24

2006-01-24

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S375000, C137S515000, C137S515500, C137S559000, C251S368000

Reexamination Certificate

active

06988510

ABSTRACT:
A free floating disc check valve is provided by the present application. The check valve includes a seal disc having an integral truncated torroidal shaped portion. The torroidal shaped portion provides structural rigidity to the seal disc to minimize deflection of the disc under higher differential fluid pressures. The torroidal shaped portion of the disc cooperates with finger-shaped projections inside the valve body to limit lateral displacement of the disc relative to the axial flow of the fluid. The torroidal shaped portion and the flat portion of the disc form a cup shape that creates a hydrodynamic force that assists in moving the disc to an opened or closed position. The seal disc is made of an elastomeric material that is coated with a dry film lubricant.

REFERENCES:
patent: 455913 (1891-07-01), Walker
patent: 1180989 (1916-04-01), Enger
patent: 2021351 (1935-11-01), Carson
patent: 2538662 (1951-01-01), Abbott
patent: 2710023 (1955-06-01), Blackford et al.
patent: 2797704 (1957-07-01), McDermott et al.
patent: 2800142 (1957-07-01), Champion
patent: 2949930 (1960-08-01), Moore
patent: 3010477 (1961-11-01), Graham
patent: 3601152 (1971-08-01), Kenworthy
patent: 4310017 (1982-01-01), Raines
patent: 4369808 (1983-01-01), Hagman
patent: 4415003 (1983-11-01), Paradis et al.
patent: 4468224 (1984-08-01), Enzmann et al.
patent: 4850393 (1989-07-01), Lashomb
patent: 5284475 (1994-02-01), Mackal
patent: 5474541 (1995-12-01), Ritsky et al.
patent: 5535785 (1996-07-01), Werge et al.
patent: 5692539 (1997-12-01), Pickl, Jr.
patent: 5992462 (1999-11-01), Atkinson et al.
patent: 6158458 (2000-12-01), Ryan
patent: 6240962 (2001-06-01), Tai et al.
patent: 6305416 (2001-10-01), Snel et al.
patent: 6311712 (2001-11-01), Meyer
patent: 2002/0002350 (2002-01-01), Larrain et al.
patent: 472088 (1991-08-01), None
patent: 550712 (1956-09-01), None
patent: 2045902 (1980-11-01), None
International Search Report, International Application No. PCT/US03/07394, Published by the International Searching Authority.

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