Electricity: circuit makers and breakers – Multiple circuit control – Operating means
Patent
1995-05-15
1997-05-27
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Operating means
335189, 335191, H01H 300
Patent
active
056334834
ABSTRACT:
A circuit breaker is provided having a stationary contact, a movable contact and a blade which has a first end and a second end. The movable contact is secured to the first end of the blade. The blade is rotatable about a pin between a BLOWN OPEN position and a CLOSED position, wherein the movable contact is separated from the stationary contact when the blade is in the BLOWN OPEN position and the movable contact engages the stationary contact when the blade is in the CLOSED position. The blade further has a protrusion portion extending from its second end. The circuit breaker further includes a catcher rotatably coupled to a pivot pin and having a nose portion for engagement with the blade protrusion portion. A spring is mounted about the pivot pin and engages the catcher for biasing the catcher towards the blade whereby the nose portion rests against the protrusion portion of the blade when the blade is in the CLOSED position and the nose portion overlaps the protrusion portion when the blade is in the BLOWN OPEN position thereby holding the blade in the BLOWN OPEN position.
REFERENCES:
patent: 4539538 (1985-09-01), Flick et al.
patent: 4642431 (1987-02-01), Tedesco et al.
patent: 4645890 (1987-02-01), Paton et al.
patent: 4645891 (1987-02-01), Changle
patent: 4791393 (1988-12-01), Flick et al.
patent: 5416291 (1995-05-01), Venzke
Oster Clark L.
Venzke Donald R.
Wehr Eugene W.
Golden Larry I.
Irfan Kareem M.
Scott J. R.
Square D Company
Stoppelmoor Wayne H.
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