Impact switch

Details Impact switch Impact switch

1984-12-26

1986-04-08

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6148, 310329, 310339, H01H 3514, H01L 4108

Patent

active

045815062

ABSTRACT:
An apparatus and method is disclosed for providing an impact switch that is non-critical to temperature variations and preload pressures. The impact switch consists of a plate having a pair of parallel slots disposed therethrough defining a beam capable of flexing. A mass is located on one side of the beam and a piezoelectric crystal is located on the contact side of the beam. The plate is covered by a housing having a pin extending therethrough. The cover is placed such that when the required force is exerted on the beam it will flex causing the piezoelectric crystal and pin to come in contact thereby providing a voltage that will trigger the associated circuitry. The force required to make contact can be varied by changing the weight of the mass and/or the material or dimension of the beam.

REFERENCES:
patent: 2997557 (1961-08-01), Gillmor et al.
patent: 3097272 (1963-07-01), Hautly
patent: 3256762 (1966-06-01), Haas et al.
patent: 3538232 (1970-11-01), Bachtig et al.

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