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:
May. 28, 2002
Filed:
Dec. 15, 2000
David A. Leone, Lilburn, GA (US);
James E. Ferree, Lawrenceville, GA (US);
Bernard DiMarco, Lilburn, GA (US);
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Abstract
The circuit breaker ( ) of the present invention is a molded case circuit breaker and includes a molded case ( ) having a main cover ( ), a first terminal ( ) and a second terminal ( ) mounted inside the case ( ) with a stationary contact ( ) electrically coupled to the first terminal ( ) and a movable contact ( ) electrically coupled to the second terminal ( ). The movable contact ( ) is coupled to an operating mechanism ( ) which has a pivoting member ( ) moveable between an ON position, an OFF position and a TRIPPED position. An intermediate latching mechanism ( ) also is mounted in the housing ( ) and is coupled to the operating mechanism ( ). The intermediate latching mechanism ( ) is selectively operated by a trip unit ( ) which comprises a magnetic short circuit release and a thermal overload release. The trip unit ( ) can be reconfigured by the addition of an inner yoke ( ) nested between the flanges ( ) of an outer yoke ( ) and a second magnetic shield ( ) can be attached to the outer yoke ( ) to change the sensitivity of the trip unit ( ) to the currents experienced by the circuit breaker. A particular embodiment of the circuit breaker ( ) includes an interchangeable bi-metal ( ) member of a copper alloy having a chemical composition of CDA #19400 and with an electrical conductivity of not more than 40% IACS.