Circuit breaker
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 20, 2003
Grant Date -
May 30, 2002
app pub date -
Oct 25, 2001
filing date -
Oct 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a circuit breaker, a rotary-operating handle is linked with an opening and closing mechanism via a driving gear so that main circuit contacts can be opened and closed by rotating an opening and closing lever. A vertically moving handle lock lever is arranged between a tip of the opening and closing lever and the driving gear directly coupled to the operating handle, so that when the main circuit contacts are opened after being welded, the lock lever abuts against the driving gear to restrain the operating handle to the vicinity of the ON position, thereby restricting the movement to a contact-open indicating position. Further, an upward-inclined surface is formed in a stopper section located at a tip of the lock lever, so that if the contact welding is not severe, the lock lever can be pushed down to forcibly open the contacts.
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