Key operated security switch

Details Key operated security switch Key operated security switch

2007-03-27

2007-03-27

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

C200S568000, C200S569000

Reexamination Certificate

active

11367933

ABSTRACT:
A key operated switch that provides enhanced operational characteristics wherein the rotary motion of a key is translated into the actuation of a switch mechanism that rapidly establishes an electrical connection between a source of electrical current and a load. The switch uses a toggle adapted to interact with a standard switching mechanism which reduces the number of components and the cost of the switch. The key cylinder is coupled to a yieldable member such as spring to provide a positive or snap action when the key cylinder is rotated with a prescribed arc of rotation which reduces the complexity of the switch.

REFERENCES:
patent: 3714383 (1973-01-01), Leonard et al.
patent: 3723677 (1973-03-01), Arias
patent: 3858012 (1974-12-01), Lockard
patent: 3906176 (1975-09-01), Carlson
patent: 4107484 (1978-08-01), Petersen, III
patent: 4511770 (1985-04-01), Hayashida
patent: 5725087 (1998-03-01), Ives

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