Thermally actuated time delay switch

Details Thermally actuated time delay switch Thermally actuated time delay switch

1980-10-31

1982-07-13

Beha, Jr., William H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

337125, 337139, 337141, H01H 6102

Patent

active

043397417

ABSTRACT:
A thermally actuated switch which embodies an active unit which includes a heat responsive element which is part of an enclosure enclosing electrical resistance elements for heating. Heat is applied internally to the enclosure and cooling is by way of dissipation of heat externally from the enclosure. The thermally responsive element is in the form of a flat plate which expands lengthwise. The plate engages the shorter arm of a pivoted bell crank lever, which along with the leaf spring engages the actuating member to be actuated.

REFERENCES:
patent: 1150706 (1915-08-01), Ryan
patent: 2243563 (1941-05-01), Hottenroth
patent: 3312802 (1967-04-01), Ryckman
patent: 3805207 (1974-04-01), Grimshaw
patent: 3846726 (1974-11-01), Hierholzer et al.

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