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:
Dec. 20, 2005
Filed:
Jan. 13, 2005
Paul R. Rakus, Chippewa Township, PA (US);
Thomas C. Pendrick, Clinton, PA (US);
John J. Shea, Pittsburgh, PA (US);
Jeffrey A. Miller, McKees Rocks, PA (US);
Glen C. Sisson, Monaca, PA (US);
Michael B. Schulman, Pittsburgh, PA (US);
Yun-ko N. Chien, Pittsburgh, PA (US);
Paul R. Rakus, Chippewa Township, PA (US);
Thomas C. Pendrick, Clinton, PA (US);
John J. Shea, Pittsburgh, PA (US);
Jeffrey A. Miller, McKees Rocks, PA (US);
Glen C. Sisson, Monaca, PA (US);
Michael B. Schulman, Pittsburgh, PA (US);
Yun-Ko N. Chien, Pittsburgh, PA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A moving contact assembly for a high-current interruption electric power switching apparatus has an inner carrier for the contact fingers that is rigidly held in a withstand position in an outer carrier by a spring biased cam follower pin engaging a cam profile on the inner carrier and configured to positively seat an inner carrier stop against an outer carrier stop on the outer carrier and to rapidly drive the inner carrier to a blow open position in response to a fault. The cam profile has an extended width divided between spaced apart cam profile sections to absorb the high closing and withstand forces. An abutment on the outer carrier resists bowing of the cam follower pin between the cam profile sections. Complementary convex and concave partial cylindrical surfaces on the inner carrier and a gas shield on the moving assembly carrier body maintain an arc gas seal during blow open.