Compressed-gas circuit-interrupter having a sleeve-valve for tem

Details Compressed-gas circuit-interrupter having a sleeve-valve for tem Compressed-gas circuit-interrupter having a sleeve-valve for tem

1976-09-28

1978-09-05

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, H01H 3388

Patent

active

041122763

ABSTRACT:
An improved compressed-gas-type of circuit-interrupter is provided having a pair of separable contacts and a cooperating nozzle structure, through which the established arc is drawn. A spring-biased sleeve-valve surrounds at least one of these separable contacts, and extends at times into the orifice throat in the closed-circuit position of the device, and also during a portion of the opening operation, thereby blocking any gas flow through the throat of the orifice device in such blocking position of the sleeve-valve.
The aforesaid sleeve-valve is preferably attached by a lost-motion mechanical connection with the associated captive contact, which it surrounds, so that during an intermediate portion of the opening operation, the sleeve-valve is physically picked up on the opening stroke by the aforesaid captive contact, or, alternatively, limited in its blocking action, and withdrawn out of the orifice throat upon take-up of the lost motion, thereby unblocking the said throat and thus permitting a flow of gas therethrough.

REFERENCES:
patent: 2933575 (1960-04-01), Baker
patent: 3786215 (1974-01-01), Mauthe
patent: 3941962 (1976-03-01), Thaler
patent: 3955057 (1976-05-01), Dabringhausen et al.

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