Device for detecting an applied compressive load

Details Device for detecting an applied compressive load Device for detecting an applied compressive load

1974-03-28

1976-03-23

McGlynn, Joseph H.

Geometrical instruments

85 62, 73 88F, 339113L, 340421, H01R 908

Patent

active

039457044

ABSTRACT:
A one-shot device for detecting the application of a compressive load of predetermined amount which includes a first and a second electrically conductive metallic member, each of which has a substantially planar face. The first member is made of a material which is harder and less ductile than the material of the second member. A brittle insulation layer is sandwiched between the faces. A wall recedes from the first face partially to define an open region adjacent to the first face. When the members are pressed toward one another under a load of said predetermined amount, the insulation layer fractures abruptly at the wall, and material of one of the members moves to make contact at the wall with the other member so as to signal application of the predetermined force. This change of conductive condition can be utilized to complete an electrical circuit for indication and control purposes.

REFERENCES:
patent: 2648883 (1953-08-01), Wilson et al.
patent: 3588787 (1971-06-01), Kindell et al.
patent: 3623360 (1971-11-01), Paine
patent: 3696412 (1972-10-01), Swanson
patent: 3719919 (1973-03-01), Tibolla
patent: 3740685 (1973-06-01), Fisher

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