Circuit interrupting device

Details Circuit interrupting device Circuit interrupting device

1978-10-16

1980-12-23

Truhe, J. V.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, 200148F, H01H 3314

Patent

active

042412480

ABSTRACT:
A circuit interrupting device has a stationary contact. A movable contact is carried by a movable double-walled conductive tube which is telescoped and electrically continuous with a stationary tube. The tubes carry all of the current through the device. A piston carried by the stationary tube defines a piston-cylinder with the movable tube. When the movable tube moves to open the contacts, the piston-cylinder forces dielectric gas to and past the gap therebetween. In a two-gap version of the device the stationary tube is also double-walled and carries a second stationary contact. A piston carried by the movable tube defines a piston-cylinder with the stationary tube. When a second movable contact jointly moves with the first movable contact to open the contact pairs, both piston cylinders force dielectric gas to and past both gaps.

REFERENCES:
patent: 3221129 (1965-11-01), Young
patent: 3769479 (1973-10-01), Leeds
patent: 3909572 (1975-09-01), Tsubaki et al.
patent: 4103128 (1978-07-01), Kosaku

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