Back to results
US 2002/0092747 A1Published application
Circuit breaker with inertia device to prevent shockout
AssigneeEaton Corporation
InventorDavid C. Turner
Life of this patent
Estimating the term…
Abstract
A pair of spring mounted masses have sufficient inertia to remain stationary in response to a shock force applied to the housing of a trip assembly in a circuit breaker to block movement of the trip bar and thereby prevent a nuisance trip.
Claims10
A circuit breaker comprising:
- a casing;
- separable contacts;
- an operating mechanism incorporating a latch, the operating mechanism opening the separable contacts when the latch is unlatched;
- a trip assembly comprising:
- a trip bar unlatching the latch when moved to a trip position;
- and
- a trip unit moving the trip bar to the trip position in response to selected conditions of current flowing through the separable contacts;
- and
- an inertia device preventing movement of the trip bar to the trip position in response to a mechanical shock.
6 more elements
Dependencies are inferred from the claim text.