Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1975-04-14
1977-04-26
Scott, James R.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
H01H 920
Patent
active
040203018
ABSTRACT:
A drawout mechanism includes a carriage mounting a circuit breaker and supported on telescoping rails to facilitate racking movement of the circuit breaker between extreme positions of electrical engagement and disengagement with respect to switchboard primary disconnect contacts. In an intermediate test position, the primary contacts are disengaged but plural secondary contacts mounted by the carriage and by the switchboard are engaged for testing of accessorial functions. The plural switchboard secondary contacts are floatingly mounted such that they can be drawn en masse into contact engaging alignment with the plural circuit breaker secondary contacts as the carriage moves into the test position from the disengaged position.
REFERENCES:
patent: 2711452 (1955-06-01), Spencer et al.
patent: 2777024 (1957-01-01), West
patent: 2921998 (1960-01-01), Pokovny et al.
patent: 3188415 (1965-06-01), Netzel
patent: 3578925 (1971-05-01), Drown et al.
Ericson Eric Axel
Kaufhold Frederick Daniel
Bernkopf Walter C.
Cahill Robert A.
General Electric Company
Neuhauser Frank L.
Scott James R.
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