Self-contained exhaust fan for a water closet

Details Self-contained exhaust fan for a water closet Self-contained exhaust fan for a water closet

2005-05-24

2005-05-24

Huson, Gregory L. (Department: 3751)

Baths, closets, sinks, and spittoons

Ventilation

Electric-motor pump

C004S217000

Reexamination Certificate

active

06895604

ABSTRACT:
An exhaust fan unit (26) is mounted in a hole (86) which extends through a central region (27) of a lid (22) of a water closet (12) for exhausting air from within a bowl (16) of the water closet (12) when the lid (22) is horizontally disposed, in a closed position. A housing (32) is mounted to the lid (22) and has a window (56) for receiving a filter cartridge (34). A control circuit (96) has a position sensor (144) and control logic (142). The position sensor (144) detects when the lid (22) is moved from a vertically disposed, open position to the closed position. The control logic (142) applies electric power to operate the fan unit (72) for a predetermined time interval when the lid (22) is disposed in the closed position.

REFERENCES:
patent: 2849727 (1958-09-01), Bollinger et al.
patent: 3659296 (1972-05-01), Stamper
patent: 3689944 (1972-09-01), Clayton
patent: 4344194 (1982-08-01), Pearson
patent: 4586201 (1986-05-01), Todd, Jr.
patent: 4853981 (1989-08-01), Hunnicutt, Jr.
patent: 5539937 (1996-07-01), Barefoot
patent: WO 9006404 (1960-06-01), None
Mary Beth Breckenridge, “Smart Cleaning Avoids Spread of Germs,” The Morning News, Springdale Arlansas, Dec. 11, 2000, p. 5C.
Cecil Adams, “Does flushing the toilet cause dirty water to be spewed around the bathroom?,” The Straight Dope, Apr. 16, 1999.

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