Appliance safety alarm

Details Appliance safety alarm Appliance safety alarm

1997-01-15

1998-11-24

Swarthout, Brent A.

Communications: electrical

Condition responsive indicating system

Specific condition

340542, 340644, 219506, G08B 2100, H05B 102

Patent

active

058413561

ABSTRACT:
An appliance safety alarm including a first sensing circuit for detecting operation of the appliance, a second sensing circuit for detecting when an access cover, such as a dryer door or washer lid, is in the open condition, and a control circuit having first and second inputs in connection with the first and second sensing circuits and having an output controlling an audible alerting device. The control circuit is constructed in a manner to provide an activation signal to the audible alerting device when the access cover is opened while the appliance is in operation and when the access cover remains open for more than a predetermined period when the appliance is not in operation.

REFERENCES:
patent: 3399461 (1968-09-01), Doty
patent: 4106095 (1978-08-01), Yarbrough
patent: 4132008 (1979-01-01), Deschaaf
patent: 4345145 (1982-08-01), Norwood
patent: 4415887 (1983-11-01), Kawase
patent: 4453161 (1984-06-01), Lemelson
patent: 4785152 (1988-11-01), Hirata et al.
patent: 5077547 (1991-12-01), Burgmann
patent: 5229753 (1993-07-01), Berg et al.
patent: 5467077 (1995-11-01), Wunderlich et al.
patent: 5497563 (1996-03-01), Mayfield
patent: 5608378 (1997-03-01), McLean et al.

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