Electrical circuit interruptors
First Claim
1. An electrical circuit making and breaking device including stationary contact means, movable contact means including a main movable contact member, means for operating the movable contact means into and out of cooperation with the stationary contact means, said stationary contact means including a pair of main contact jaws having respective pivots bearing contact surfaces that are opposite each other but spaced apart, a toggle operable toward an erect condition as the movable contact member advances in the space between said contact surfaces for driving said contact jaws so that said contact surfaces grip and are slidably engaged by the main movable contact member, and means on said movable contact means for operating said toggle.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosed circuit breaker includes a movable contact which enters the space between stationary contact jaws, the movable contact acting through a spring to bias a jaw-closing toggle toward erect condition, so that contacts on the contact jaws firmly grip the movable contact.
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Citations
7 Claims
- 1. An electrical circuit making and breaking device including stationary contact means, movable contact means including a main movable contact member, means for operating the movable contact means into and out of cooperation with the stationary contact means, said stationary contact means including a pair of main contact jaws having respective pivots bearing contact surfaces that are opposite each other but spaced apart, a toggle operable toward an erect condition as the movable contact member advances in the space between said contact surfaces for driving said contact jaws so that said contact surfaces grip and are slidably engaged by the main movable contact member, and means on said movable contact means for operating said toggle.
- 6. An electrical circuit making and breaking device including stationary contact means, movable contact means including a main movable contact member, means for operating the movable contact means into and out of cooperation with the stationary contact means, said stationary contact means including a pair of main contact jaws pivoted between first and second opposite ends thereof, main contacts on the first ends of said jaws, respectively, having contact surfaces that are opposite each other but spaced apart, and means operable by said movable contact means as the movable contact member enters the space between said contact surfaces for driving said second ends of the contact jaws farther from each other, thereby forcing the contact surfaces of the jaws to grip slidably the main movable contact member, said driving means including a toggle operable from a relatively collapsed condition when the contacts are open, toward an erect condition when the contacts are closed.
Specification