Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1998-05-22
1999-08-10
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
337380, 337324, 337 77, 337100, 337102, 337107, H01H 3714, H01H 6102, H01H 6100
Patent
active
059365102
ABSTRACT:
A thermostat includes a case having a sealed interior and an exterior. A contact extends from the sealed interior to the exterior. The contact is fixed with respect to the casing and has an interior contact position. A first blade extends from the sealed interior to the exterior and has an interior end. The interior end of the first blade moves between a first position where the interior end of first blade contacts the interior contact position of the contact and a second position where the interior end of the first blade is spaced from the contact position end of the contact. A separator is disposed between the first blade and the contact in the interior of the case. The separator is made of an insulating material. The separator has a first side facing the contact and a second side facing the first blade. A first conductive contact pad is disposed on the first side of the separator. A second conductive contact pad is disposed on the second side of the separator. A resistor disposed within that separator is electrically connected between the first conductive contact pad and the second conductive contact pad. The resistor has sufficient resistance so that when the interior end of the first blade moves from the first position to the second position, sufficient heat is generated by the resistor to maintain the interior end of the first blade in the second position until a load current being applied to the contact and the first blade is removed.
REFERENCES:
patent: 3223808 (1965-12-01), Wehl
patent: 3525914 (1970-08-01), Vind
patent: 3919679 (1975-11-01), Kingma
patent: 4015229 (1977-03-01), Senor et al.
patent: 4086558 (1978-04-01), Pejouhy et al.
patent: 4220938 (1980-09-01), Grable
patent: 4237510 (1980-12-01), Thompson, Jr. et al.
patent: 4262273 (1981-04-01), Grable
patent: 4399423 (1983-08-01), Nield
patent: 4458231 (1984-07-01), Senor
patent: 4476452 (1984-10-01), D'Entremont
patent: 4517541 (1985-05-01), Ubukata et al.
patent: 4755787 (1988-07-01), Wehl
patent: 4849729 (1989-07-01), Hofsass
patent: 4862133 (1989-08-01), Tabei
patent: 4878038 (1989-10-01), Tsai
patent: 4894634 (1990-01-01), Nezuka et al.
patent: 5103202 (1992-04-01), Lennon et al.
patent: 5233325 (1993-08-01), Takeda
patent: 5309131 (1994-05-01), Hofsass et al.
patent: 5607610 (1997-03-01), Furukawa
patent: 5745022 (1998-04-01), Becher et al.
patent: 5757262 (1998-05-01), Takeda
Petro James M.
Wehl Brandon L.
Picard Leo P.
Portage Electric Products, Inc.
Vortman Anatoly
LandOfFree
Sealed case hold open thermostat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealed case hold open thermostat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealed case hold open thermostat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1124059