Inflatable slit/gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Reexamination Certificate

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Details

C414S939000, C251S197000

Reexamination Certificate

active

06905107

ABSTRACT:
A sealable door assembly including a frontplate which faces an opening to be sealed, a backplate operatively coupled to the frontplate, and at least one inflatable member located between the frontplate and the backplate. When inflated, the inflatable member moves the frontplate into sealing engagement with the opening. In one embodiment the inflatable member includes one or more vacuum grade bellows. A movable mechanism moves the door assembly to selectively occlude the opening. Once the door assembly occludes the opening, the inflatable member is inflated and expands forcing the frontplate in a direction normal to the opening, thereby sealing the opening. The door assembly may be mounted within a pocket formed in an outer wall of a transfer chamber, and a sealing plate may be employed to form a gas tight region within the pocket. The gas tight region may be pressurized to enhance the door's seal of the opening.

REFERENCES:
patent: 3040773 (1962-06-01), McInerney
patent: 3524467 (1970-08-01), Worley
patent: 3717322 (1973-02-01), Bernard
patent: 3785612 (1974-01-01), Schertler
patent: 4052036 (1977-10-01), Schertler
patent: 4070001 (1978-01-01), Musgrove
patent: 4075787 (1978-02-01), Krahe
patent: 4157169 (1979-06-01), Norman
patent: 4238111 (1980-12-01), Norman
patent: 4343455 (1982-08-01), Winkler
patent: 4381100 (1983-04-01), Schoenberg
patent: 4562992 (1986-01-01), Sugisaki et al.
patent: 4721282 (1988-01-01), Shawver et al.
patent: 4785962 (1988-11-01), Toshima
patent: 4921213 (1990-05-01), Geiser
patent: 5002255 (1991-03-01), Sawa et al.
patent: 5087017 (1992-02-01), Sawa et al.
patent: 5110249 (1992-05-01), Norman
patent: 5116023 (1992-05-01), Contin
patent: 5120019 (1992-06-01), Davis, Jr.
patent: 5275303 (1994-01-01), Szalai
patent: 5363872 (1994-11-01), Lorimer
patent: 5379983 (1995-01-01), Geiser
patent: 5577707 (1996-11-01), Brida
patent: 5626324 (1997-05-01), Nakamura et al.
patent: 5695564 (1997-12-01), Imihashi
patent: 5820104 (1998-10-01), Koyano et al.
patent: 5971358 (1999-10-01), Kennedy
patent: 5975492 (1999-11-01), Brennes
patent: 6045620 (2000-04-01), Tepman et al.
patent: 6079693 (2000-06-01), Ettinger et al.
patent: 6089543 (2000-07-01), Freerks
patent: 6302372 (2001-10-01), Sauer et al.
patent: 6347918 (2002-02-01), Blahnik
patent: 6390448 (2002-05-01), Kroeker et al.
patent: 0 441 646 (1991-08-01), None
patent: 851444 (1960-10-01), None
patent: 2240157 (1991-07-01), None
patent: WO 99/03132 (1999-01-01), None
patent: WO 99/28951 (1999-06-01), None
VAT Series 19 Large Gate Valves Data Sheet, pp. 60-61.
VAT Series 48 All-Metal Gate Valve Data Sheet, pp. 106-107.
VAT Series 12 Vacuum Gate Valve Data Sheet, pp. 40-41.

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