Shock sensor switch

Details Shock sensor switch Shock sensor switch

1985-08-12

1987-08-11

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6151, H01H 3514

Patent

active

046863354

ABSTRACT:
A vibration sensitive switch has a pair of spaced apart parallel contacts (4) housed in a switch body (1,2,3) and a movably supported activated mass (5) inside a chamber (6) in the body. The mass (5) is supported by conductive members in the form of a pair of bars (14, 16) secured in the mass and located between the two contacts (4) with the center of gravity (Cg) of the mass (5) spaced from the points of contact between the contacts (4) and the bars so that bars are urged against the contacts (4) by a lever action as a result of the gravitational force acting on the mass (5). The forces at the contact points are thus greater than that which would be obtained by simply allowing the mass to rest on the contacts, which enables a relatively small mass to be used having a greater sensitivity to high frequency vibrations.

REFERENCES:
patent: 2064827 (1936-12-01), Gardner
patent: 2780688 (1957-02-01), Stec
patent: 2806914 (1957-09-01), Tedder
patent: 3246092 (1966-04-01), Todd
patent: 3588400 (1971-06-01), Fanes
patent: 3835273 (1974-09-01), Stolarik
patent: 4022997 (1977-05-01), Inagaki et al.
patent: 4399640 (1982-07-01), Grant

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