Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Patent
1986-09-10
1988-05-31
Tapoicai, William E.
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
236 48R, 337373, H01H 3766
Patent
active
047484322
ABSTRACT:
A device for the control of room temperature in existing automobiles is placed in series with the driving circuit of the blower motor of the automobile. The temperature control device includes a bimetal or spiral bimetallic strip capable of setting a working temperature. The bimetal is used for the direct detection of the room temperature of the automobile. An insulating member is attached to a free end of the bimetal. The insulating member carries a first electrical contact, and a mating contact opposes the first contact. Respective lead wires are attached to each contact. A switch lever rotates the bimetal to set a desired temperature. A stopper is provided to hold the contacts together so that, regardless of the ambient temperature, the blower motor remains on, and the user can rely solely on the existing controls.
REFERENCES:
patent: 1867756 (1932-07-01), Penn
patent: 2068270 (1937-01-01), Hulse
patent: 2149853 (1939-03-01), McCabe
patent: 2596366 (1952-05-01), Brockett
patent: 2702844 (1955-02-01), Kronmiller
patent: 3190988 (1965-06-01), Graham et al.
patent: 3211864 (1965-10-01), Larsen
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