Circuit breaker rotary contact arm arrangement
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United States of America Patent
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Oct 30, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1999
filing date -
Dec 17, 1999
priority date (Note) -
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Abstract
A rotary contact arrangement for circuit breakers of the type including a pair of movable contacts (30,36), one arranged on each end of the rotary contact arm (32), utilizes a single pair of contact springs (38), one spring on each side of the rotary contact arm (32). The springs (38) are aligned to intersect the axis of rotation of the rotary contact arm (32) for automatic uniform contact force adjustment throughout the operating life of the circuit breaker.
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