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US 4,358,650 AGranted
Circuit breaker
AssigneeGTE Laboratories Incorporated
InventorAlexander R. Norden
Life of this patent
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AssigneeGTE Laboratories Incorporated
InventorAlexander R. Norden
Estimating the term…
During "ON" operation, the lengths of the arms of a toggle are essentially fixed; during "TRIP" operation, the length of at least one arm is effectively shortened. The toggle operates, in "ON" condition, with one arm pivotally coupled to a second arm about a fixed pivot point adjacent to a channel with respect to the second arm. In "TRIP" condition, the one arm is pivotally coupled to the other arm about at least one pivot point lying within the channel. A spring couples the two arms which are pivoted together: in "normal" conditon, one arm is pivoted about a substantially fixed point with respect to the other arm; in "TRIP" condition, one arm is pivoted about a locus of points with respect to the second arm distant from the substantially fixed point. A stationary contact is held by an insulated circuit breaker housing. A handle is pivoted about a fixed pivot point on the housing and is limited in arcuate motion by the housing. A contact arm, having a contact affixed thereto, has an attachment means, a projection, and a pocket with at least one corner. A latch normally blocks one corner of the pocket so as to provide a corner opening for reception of a portion of a link which extends from the handle. The latch, when actuated, unblocks the corner to permit the portion of the link to exit from the opening. A spring couples the attachment means to the housing so as to urge the contact arm toward the fixed pivot point. In "ON" condition, the latch blocks the one corner of the pocket and the contacts are engaged. Upon actuation of the latch, the one corner unblocks, and the portion of the link exits from the corner opening, whereupon the projection engages with a housing barrier, causing the contact arm to at least partially pivot thereabout, opening the contacts.
In a circuit breaker,
A circuit breaker comprising
In a circuit breaker mechanism, a new and improved toggle mechanism including a first arm having a first coupling spot at a fixed location thereon, a second arm having a second coupling spot at a fixed location thereon, a spring coupling said first arm at said first spot to said second arm at said second spot, and means for pivoting said first arm with respect to said second arm, the improvement wherein said means, in a normal condition, provides for pivoting said first arm with respect to said second arm about a substantially fixed pivot point with respect to said second arm, and, in an actuated condition, provides for pivoting said first arm with respect to said second arm about at least one pivot point with respect to said second arm distant from said substantially fixed pivot point, and wherein neither of said spots is coincident with any of said points.
In a circuit breaker mechanism, an improved toggle mechanism including a first arm having a first spot at a fixed location thereon, a second arm having a channel therewithin, said second arm having a second spot at a fixed location therewithin but without said channel, a spring coupling said arms together at said spots, and means for pivotally coupling said first arm to said second arm, the improvement wherein
In a circuit breaker mechanism, an improved toggle mechanism including a first arm having a fixed connection point thereon and a pivotal coupling, the distance between said connection point and said pivotal coupling being a first length;
Dependencies are inferred from the claim text.