Motion sensor circuit controller

Communications: electrical – Condition responsive indicating system – Specific condition

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Details

200 6145R, 200 6152, 340566, 340689, 340693, G08B 1302, G08B 2100

Patent

active

053070542

ABSTRACT:
A seismic circuit controller includes a ring-shaped first conductor; a second conductor defining a concave conductive surface; a base for supporting the first conductor horizontally oriented above the second conductor, the second conductor being concave upwardly, the conductors being connected in a circuit having first and second circuit nodes. A conductive ball that rollably contacts the second conductor makes electrical contact between the first and second conductors in response to lateral movement of the conductors, an SCR latch circuit of the controller maintaining a low-impedance current flow between the first and second circuit nodes in response to the electrical contact between the first and second conductors when the controller is connected in series with a battery and a load. A control switch that is also connected in series with the load arms the controller when ON and resets the latch circuit when OFF. The base together with the first and second conductors, the conductive ball, and the latch circuit can be configured interchangeable with a conventional battery cell of a flashlight, the load being powered when the control switch is activated and upon predetermined seismic movement, the battery continuing to power the load after termination of the electrical contact and until the control switch is deactivated.

REFERENCES:
patent: 3248723 (1966-04-01), Miethe
patent: 3634844 (1972-01-01), King
patent: 4139845 (1979-02-01), Washburn
patent: 4264892 (1981-04-01), Zonn
patent: 4266216 (1981-05-01), Trusty
patent: 4716402 (1987-12-01), Francis
patent: 4841288 (1989-06-01), Addicks
patent: 4959637 (1990-09-01), Woods et al.

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