Title:
BLOW OPEN MOVING CONTACT ASSEMBLY FOR ELECTRIC POWER SWITCHING APPARATUS WITH A VERY HIGH CURRENT INTERRUPTION RATING
Document Type and Number:
WIPO Patent Application WO2006075232
Kind Code:
A9
Abstract:
A moving contact assembly for 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.
Inventors:
RAKUS PAUL R (US)
PENDRICK THOMAS C (US)
SHEA JOHN J (US)
SCHULMAN MICHAEL B (US)
CHIEN YUN-KO N (US)
MILLER JEFFREY A (US)
SISSON GLEN C (US)
PENDRICK THOMAS C (US)
SHEA JOHN J (US)
SCHULMAN MICHAEL B (US)
CHIEN YUN-KO N (US)
MILLER JEFFREY A (US)
SISSON GLEN C (US)
Application Number:
PCT/IB2006/000040
Publication Date:
August 30, 2007
Filing Date:
January 12, 2006
Export Citation:
Assignee:
EATON CORP (US)
RAKUS PAUL R (US)
PENDRICK THOMAS C (US)
SHEA JOHN J (US)
SCHULMAN MICHAEL B (US)
CHIEN YUN-KO N (US)
MILLER JEFFREY A (US)
SISSON GLEN C (US)
RAKUS PAUL R (US)
PENDRICK THOMAS C (US)
SHEA JOHN J (US)
SCHULMAN MICHAEL B (US)
CHIEN YUN-KO N (US)
MILLER JEFFREY A (US)
SISSON GLEN C (US)
International Classes:
H01H77/10; H01H1/22; H01H83/00
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