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:
Apr. 23, 2002
Filed:
Jan. 08, 2001
William John Jones, Cranberry, PA (US);
Perry Robert Gibson, Beaver Falls, PA (US);
James Jeffery Benke, Pittsburgh, PA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An electromagnetic blow-open device for a pole of a circuit breaker where the pole has a stationary contact and a movable contact. The movable contact includes contact fingers mounted on a contact carrier. The contacts have an open position and a closed position. The pole further has an associated rotatable pole shaft. The electromagnetic blow-open device includes a collapsible linkage having a rigid position and a changeable position. The collapsible linkage is disposed between, and coupled to, the pole shaft and contact carrier. The collapsible linkage is maintains the stationary contact and the movable contact in the closed position while the collapsible linkage is in the rigid position and to allow the stationary contact and the movable contact to move to the open position when the collapsible linkage is in said changeable position. The electromagnetic blow-open device also includes an actuator arm which is coupled to the collapsible linkage and is responsive to an over-current condition in the pole. The actuator arm is structured to shift the collapsible linkage from the rigid position to the changeable position.