Brake cable switch means

Details Brake cable switch means Brake cable switch means

1979-07-24

1981-01-13

Truhe, J. V.

Electricity: circuit makers and breakers

Special application

200 6118, 200 6187, 200161, 340668, H01H 1708

Patent

active

042451396

ABSTRACT:
A brake cable switch is disclosed for indicating when a cable is tensioned at or beyond a predetermined value, comprising a hollow rectangular housing containing an hermetically sealed chamber, said housing including a flexible top wall having a convex outer surface the axis of which extends longitudinally along the housing, said top wall being biased away from the housing bottom wall, a pair of switch contacts mounted in the chamber for operation between a normal first electrical condition and a second electrical condition, and a pair of fastener devices arranged at opposite ends of the housing for mounting the housing on an untensioned brake cable. The fastener device deform portions of the untensioned cable on opposite sides of the apex of the convex portion of the top wall toward the end portions of the top wall surface, respectively, whereby when the cable tension exceeds a predetermined value, the convex portion of the housing top wall is deformed inwardly to operate the switch contacts to the second electrical condition.

REFERENCES:
patent: 3798402 (1974-03-01), Raab
patent: 3838235 (1974-09-01), St. Germain
patent: 3870846 (1975-03-01), Filip
patent: 4027130 (1977-05-01), Filip

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