Electric heating – Heating devices – With current connection and/or disconnection means
Patent
1994-05-25
1996-02-06
Jeffery, John A.
Electric heating
Heating devices
With current connection and/or disconnection means
219541, 337298, 337343, H01H 3700, H05B 300
Patent
active
054897629
ABSTRACT:
A thermal protector (70, 70') is shown particularly suitable as a safety back-up mechanism for appliances having electrically energizable resistance heaters. The thermal protector has first (72, 72') and second (74, 74') electrically conductive housing members joined together through an electrically insulating gasket (76). A thermostatic snap acting disc (86) is cantilever mounted on one of the housing members and adapted to move between positions in and out of electrical engagement with the other housing member in dependence upon temperature. The snap acting disc (86) has an actuation temperature selected from approximately 70.degree. C. to 175.degree. C. and, for non-resettable applications, a reset temperature of -35.degree. C. A terminal platform (100, 100') is provided on one housing member extending lengthwise beyond the other housing member and essentially along the entire width of the protector so that a relatively rigid heater element terminal pin (32) can be placed transversely, generally parallel to the end of the protector and welded thereto to provide improved heat transfer as well as a rigid mount for the protector. The welding platform is shown provided with a stop tab member (102) to aid in positioning the terminal pin (32) at the time of welding.
REFERENCES:
patent: 2724753 (1955-11-01), Miles
patent: 3430177 (1969-02-01), Audette
patent: 3956613 (1976-05-01), Dobson et al.
patent: 4319214 (1982-03-01), Givler
patent: 4499517 (1985-02-01), Lisauskas
patent: 5337036 (1994-08-01), Kuczynski
patent: 5402099 (1995-03-01), Ballard et al.
Langlois Henry A.
Martin Lee C.
Ouillette Edward J.
Reno Geoffrey S.
Baumann Russell E.
Donaldson Richard L.
Grossman Rene E.
Jeffery John A.
Texas Instruments Incorporated
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