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:
Mar. 10, 2015
Filed:
Apr. 04, 2013
Abb Technology Ag, Zurich, CH;
Beth Dahm, Pittsburgh, PA (US);
Matthew Cuppett, Uniontown, PA (US);
Jonathan Fuge, Farmington, PA (US);
ABB Technology AG, Zürich, CH;
Abstract
Linkage structure is connected between an operating mechanism and an actuating assembly of a circuit breaker for opening and closing an electrical contact of a pole assembly. The linkage assembly includes a lever to connect with the actuating assembly. A connection rod is coupled to one end of the lever and is associated with a close spring for closing the electrical contact. A spring structure is coupled to another end of the lever. The spring structure includes an open spring providing a spring force on the lever for opening the electrical contact. The open spring places the connection rod in tension. Retaining structure is associated with the lever and the spring structure to ensure that the spring force of the open spring, exerted on the lever, is directed to the retaining structure so that tension on the connection rod is removed, enabling the connection rod to be serviced.