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US 4,831,221 AGranted
Molded case circuit breaker auxiliary switch unit
AssigneeGeneral Electric Company
InventorsYuet-Ying Yu, Robert A. Morris, Paul T. Rajotte, Lee A. Wambolt
Life of this patent
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Abstract
An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the circuit breaker cover from the environment. An auxiliary switch unit is one such accessory component which can be field-installed without affecting the integrity of the circuit breaker overcurrent protection components.
Claims6
A molded case circuit breaker accessory switch comprising:
- a slotted molded plastic case and a molded plastic cover;
- an electric switch mounted within said case said electric switch having an on-off plunger extending from one end thereof;
- an apertured operating lever pivotally mounted within said case and having a tab extension on one leg arranged for striking said switch plunger, an opposite leg of said operating lever extending through said slot for interfacing with a circuit breaker operating mechanism;
- spring means within said case arranged for biasing said tab extension away from said on-off plunger;
- and
- a pivot pin extending through said apertured lever and abutting said case and cover for pivotally supporting said lever within said case;
- and further wherein said spring means comprises a torsion spring having first and second ends, said first end being positioned behind and in contact with said tab extension and said second end being positioned on a sidewall of said case.
4 more elements
Dependencies are inferred from the claim text.