Means for operating blast valve in two-pressure circuit breaker
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United States of America Patent
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-
Apr 6, 1982
Grant Date -
N/A
app pub date -
Dec 19, 1979
filing date -
Dec 19, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved limited-travel linkage for 'cracking' a gas blast valve in a circuit breaker. A projection from a portion of the circuit breaker linkage travels along an arc in interfering relationship with a spring-loaded latch on a crank. Movement in one direction engages the latch, turning the crank and cracking the valve. Arc quenching gas then flows through a conduit to the interrupter contacts to blow out the arc drawn between them.
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