Switching valve seal

Details Switching valve seal Switching valve seal

2005-05-31

2005-05-31

Hirsch, Paul J. (Department: 3753)

Fluid handling

Reversing valves - regenerative furnace type

Rotary reversing valve

C422S173000, C432S180000

Reexamination Certificate

active

06899121

ABSTRACT:
Switching valve utilizing a rotatable seal suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. The valve has a seal plate that defines two chambers, each chamber being a flow port that leads to one of two regenerative beds of the oxidizer. The valve also includes a switching flow distributor that provides alternate channeling of the inlet or outlet process gas to each half of the seal plate. The valve operates between two modes: a stationary mode and a valve movement mode. In the stationary mode, a tight gas seal is used to minimize or prevent process gas leakage. The gas seal also seals during valve movement.

REFERENCES:
patent: 2219994 (1940-10-01), Jung
patent: 2898202 (1959-08-01), Houdry et al.
patent: 2946651 (1960-07-01), Houdry
patent: 2960245 (1960-11-01), Knapp
patent: 3985150 (1976-10-01), Kindersley
patent: 4040475 (1977-08-01), Stockman et al.
patent: 4372338 (1983-02-01), Efferson
patent: 4676744 (1987-06-01), Wray et al.
patent: 4770857 (1988-09-01), Ludwig
patent: 4834962 (1989-05-01), Ludwig
patent: 5375622 (1994-12-01), Houston
patent: 5376340 (1994-12-01), Bayer et al.
patent: 5503551 (1996-04-01), Houston
patent: 5529758 (1996-06-01), Houston
patent: 5538693 (1996-07-01), Olivier et al.
patent: 5540584 (1996-07-01), Greco
patent: 5634625 (1997-06-01), Bruno
patent: 5692892 (1997-12-01), Houston
patent: 5692893 (1997-12-01), Houston
patent: 5700433 (1997-12-01), Somary
patent: 5833938 (1998-11-01), Blazejewski
patent: 5871349 (1999-02-01), Johnson et al.
patent: 5888063 (1999-03-01), Scott et al.
patent: 6039927 (2000-03-01), Greco
patent: 6203316 (2001-03-01), Pennington
patent: 6261092 (2001-07-01), Cash
patent: 6298877 (2001-10-01), Inuki et al.
patent: 2001/0044090 (2001-11-01), Cash
patent: 34 26 662 (1986-01-01), None
patent: 43 01 748 (1994-07-01), None
patent: 196 37 090 (1997-12-01), None
patent: 196 43 821 (1998-01-01), None
patent: 197 16 877 (1998-12-01), None
patent: 43 44 700 (1999-01-01), None
patent: 197 47 905 (1999-01-01), None
patent: 197 38 678 (1999-03-01), None
patent: 0 117 564 (1984-09-01), None
patent: 0 137 670 (1988-05-01), None
patent: 0 222 463 (1989-01-01), None
patent: 0 218 590 (1989-05-01), None
patent: 0 365 262 (1992-10-01), None
patent: 0 548 630 (1993-06-01), None
patent: 0 587 064 (1994-03-01), None
patent: 0 697 562 (1996-02-01), None
patent: 0 702 195 (1997-05-01), None
patent: 0 719 984 (1997-05-01), None
patent: 0 715 706 (1999-05-01), None
patent: 0 811 143 (1999-11-01), None
patent: 2 065 855 (1983-03-01), None
patent: 2 107 445 (1985-02-01), None
patent: 2 116 306 (1985-08-01), None
patent: 2 122 329 (1985-09-01), None
patent: 2 171 178 (1988-11-01), None
patent: 2 206 682 (1989-01-01), None
patent: 880100286 (1990-12-01), None
patent: 503802 (1996-09-01), None
patent: 84/04154 (1984-10-01), None
patent: 95/00809 (1995-01-01), None
patent: 96/24812 (1996-08-01), None
patent: 96/24813 (1996-08-01), None
patent: 96/41996 (1996-12-01), None
patent: 97/07374 (1997-02-01), None
patent: 97/21959 (1997-06-01), None
patent: 98/06993 (1998-02-01), None
patent: 98/06994 (1998-02-01), None
patent: 98/09491 (1998-03-01), None
patent: 98/44298 (1998-10-01), None
patent: 98/47592 (1998-10-01), None

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