The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Dec. 08, 1983
Kenneth A Forsell, Port Washington, WI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A pair of springs (14, 22) provide counteracting rotational bias to a movable contact arm (8) pivotally supported on a latched lever (10). A handle (4) is manually operable for reducing the force applied by one spring (22) to effect contact (6a, 8b) opening as a result of force applied by the other spring (14). Current sensing means (28, 34, 28a) are operable to release the latched lever (10) for releasing the pivot point (12) of the movable contact arm (8) whereby both springs (14, 22) work in a common direction to rapidly separate the contacts (6a, 8b). Arc gases are exhausted in the direction of separating movement of the movable contact arm (8) to utilize forces associated with arc gas pressure in a cummulative manner with the forces provided by springs (14, 22) to further increase the contact separation speed.