Circuit breaker

Details Circuit breaker Circuit breaker

2007-12-18

2007-12-18

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

C337S060000, C337S070000, C337S072000

Reexamination Certificate

active

10995600

ABSTRACT:
The invention relates to a re-settable, single-phase, thermo/electric circuit breaker utilizing a U-shape bimetallic element of substantial resistance properties in the circuit, so that when a predetermined overload current occurs the bimetallic element self heats and moves to trip a mechanism that opens the breaker circuit. The invention replaces the double-contact break configuration normally associated with a breaker of this type, with a single contact break configuration designed to produce a sliding action between contacts during the normal reset operation, providing a more reliable continuity at the moveable and stationary contact interface that is also less expensive to produce.

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patent: 3868614 (1975-02-01), Riendeau
patent: 4272687 (1981-06-01), Borkan
patent: 5012495 (1991-04-01), Munroe et al.
patent: 6225883 (2001-05-01), Wellner et al.
patent: 6538549 (2003-03-01), Renne et al.
patent: 6720856 (2004-04-01), Pellon et al.

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