Thermal switch with self-test feature

Details Thermal switch with self-test feature Thermal switch with self-test feature

2008-04-15

2008-04-15

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Electromechanical switching device

Thermostat switch

C337S014000

Reexamination Certificate

active

07358740

ABSTRACT:
A normally open thermal switch (200) having a bimetallic disk (18) is configured for operational testing in its installed position when exposed to a changing temperature by a test box (400) having a power source (400a). The in-place testing advantageously confirms triggering action of the switch by an event indicator (400c) at the operational temperatures designed into the switch (200). The temperature of the triggering action is presented on a temperature display (400b) and recorded by a data recorder (400d) of the test box (400). The switch (200) incorporates a heating element (24c) to heat changing the bimetallic disk (18) to snap activate at the operative temperatures. The thermal switch (200) is coupled with the test box (400) to confirm its operation without having to remove the switch from its installed location.

REFERENCES:
patent: 3947758 (1976-03-01), Sutton et al.
patent: 3949595 (1976-04-01), Jones et al.
patent: 4312278 (1982-01-01), Smith et al.
patent: 4963088 (1990-10-01), Erdman
patent: 5041775 (1991-08-01), Erdman
patent: 5043690 (1991-08-01), Wahls
patent: 5074780 (1991-12-01), Erdman
patent: 5076780 (1991-12-01), Erdman
patent: 5838878 (1998-11-01), Jane et al.
patent: 6244113 (2001-06-01), Naumann
patent: 6480091 (2002-11-01), Scott et al.
patent: 6640646 (2003-11-01), Davis et al.
patent: 6707372 (2004-03-01), Davis et al.
patent: 6762668 (2004-07-01), Davis et al.
patent: 6768412 (2004-07-01), Becka et al.
patent: 6781504 (2004-08-01), Scott et al.
patent: 2002/0060622 (2002-05-01), Scott et al.
patent: 2004/0047100 (2004-03-01), Davis et al.

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