Apparatus and method pertaining to a doorbell chime cover

Details Apparatus and method pertaining to a doorbell chime cover Apparatus and method pertaining to a doorbell chime cover

2011-08-02

2011-08-02

Crosland, Donnie L (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specified housing

C340S693500, C340S692000, C340S545600, C340S693120, C340S384100, C340S392500, C340S396100

Reexamination Certificate

active

07990281

ABSTRACT:
A doorbell chime (100) can comprise a chassis (101), a cover (104) having a mechanical-cover identifier (105, 106), a mechanical-cover identifier detector (103) (to detect when the cover is at least substantially disposed in the installed position), and a chime (102) mounted in the chassis. This chime is configured to operate in a first mode of operation (302) when the mechanical-cover identifier detector detects the cover and in a second mode of operation (303) (that is different than the first mode of operation) when the mechanical-cover identifier detector does not detect the cover.

REFERENCES:
patent: 5329836 (1994-07-01), Stannard
patent: 5764131 (1998-06-01), Twining et al.
patent: 6750760 (2004-06-01), Albritton et al.
patent: 7126490 (2006-10-01), Cole, Sr. et al.
patent: 2007/0279198 (2007-12-01), Chen et al.
Furnace Blower Door Safety Switch as shown on http://www.ecrater.com/product.php?pid=2239870 printed on May 12, 2009.

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