Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1987-04-30
1988-10-25
Broome, H.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
337372, 337380, H01H 4502, H01H 3704
Patent
active
047806982
ABSTRACT:
A resettable, current-responsive, circuit interrupter device has two wide but thin terminals embedded up to a substantial part of their thickness in a side wall of an insulating housing so that sides of the embedded terminal portions are exposed from the housing material along the side wall inside the housing. Terminal ends extend from the bottom of the housing to be connected in a circuit and extend through the top of the housing to be accessible for test purposes. An electrical contact is mounted on the exposed side surface of one embedded terminal portion and a thermostatic strip element is secured to the exposed side surface of the other embedded terminal portion to extend closely along the one housing side to normally engage the contact in a very compact, closed circuit position of the device. A lid overlies the thermostatic strip element. The thermostatic strip element has a selected resistivity and the wide terminals have substantial current capacity so the thermostatic strip self-heats to a selected temperature to open the circuit in response to occurrence of a precisely predetermined overload current condition in the device circuit at any ambient temperature likely to be encountered in an automotive environment.
REFERENCES:
patent: 3064100 (1962-11-01), Malone
patent: 3311725 (1967-03-01), Butler et al.
patent: 3909767 (1975-09-01), Williamson et al.
D'Entremont John R.
Tomkinson Donald
Broome H.
Haug John A.
McAndrews James P.
Sharp Melvin
Texas Instruments Incorporated
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