Switch having energy-efficient structural configuration

Details Switch having energy-efficient structural configuration Switch having energy-efficient structural configuration

1976-02-17

1978-01-10

Smith, Jr., David

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200 68, H01H 1328

Patent

active

040681076

ABSTRACT:
An electrical switch comprises a support, a pair of fixed contacts thereon, a switch actuating rocker platen pivotally mounted on the support for alternate pivotal movement into and out of engagement with the contacts, actuator means for pivoting the platen into and out of engagement, the actuator means comprising a pivoted lever, a spring-biased plunger means on the lever and engaging the switch actuating rocker platen for movement thereon whereby the platen rocks around the axis of its pivotal mounting to alternately engage with one of each of the fixed contacts. The spring-biased plunger means comprises a roller, bearing on and adapted to ride over the platen and rotatably attached to the pivoted lever at the roller's center of rotation. An improvement to this switch is provided wherein the platen is pivotally mounted at a point above the surface on which the roller rides and further wherein the radius of the roller equals the vertical distance from the platen to the point of pivotal mounting so that the center of rotation of the roller passes through the axis of the pivot point of the platen. The switch actuating rocker platen may comprise two intersecting arc-shaped sections, the platen so constructed that each of the sections has the pivot point of the pivoted lever as its center of curvature when the spring-biased plunger means is engaged with the respective section.

REFERENCES:
patent: 2987592 (1961-06-01), Johnson
patent: 3329784 (1967-07-01), Rogero

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