Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1976-06-21
1977-09-27
Tolin, Gerald P.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
361339, H02B 104
Patent
active
040513343
ABSTRACT:
Drawout apparatus 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 terminals. Racking movement into the engaged position from an intermediate test position is mechanically assisted by a racking screw. While in the engaged position, a separate clamping screw of a joint clamping mechanism is operated to exert equal and oppositely directed forces on interleaved contact fingers of plural associated breaker-switchboard terminal connectors. An access control assembly interlocked with the clamping and racking mechanisms and the carriage position regulates access to the clamping and racking screws.
REFERENCES:
patent: 3804998 (1974-04-01), Rexroad
patent: 4004113 (1977-01-01), Ericson
patent: 4012610 (1977-03-01), Ericson
Bernkopf Walter C.
Cahill Robert A.
General Electric Company
Neuhauser Frank L.
Tolin Gerald P.
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