Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-09-22
1978-11-14
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 62, 200 66, 200 68, 200146R, H01H 3304, H01H 930
Patent
active
041257502
ABSTRACT:
A switch adapted to interrupt high voltage electrical currents by directing an extended curvilinear arc plasma path within a fluid insulating medium. The preferred embodiment of the switch is designed to store rotational energy in a motor spring, release the stored rotational energy, and latch an opposite motor spring all in the same movement of the operator's handle. The switch also includes a mechanical overdrive unit that permits the operator's handle to be rotated only a fraction of the total rotation travelled by the movable contact. In addition, an anti-stick or weld break feature is provided that manually initiates rotation of the movable contact in the event of adhesion between the contacts. Finally, a novel contact design is disclosed which aids in controlling the path of the arc plasma as well as providing multiple contact paths to insure that proper physical connecton is made between the contacts.
REFERENCES:
patent: 570418 (1896-10-01), Wurts
patent: 592497 (1897-10-01), Scott
patent: 891306 (1908-06-01), Van Valkenburg
patent: 2337889 (1943-12-01), Harlow et al.
patent: 2644877 (1953-07-01), Guillaume
patent: 2871702 (1959-02-01), Tetro
patent: 3055227 (1962-09-01), Martin
Kuhlman Corporation
Macon Robert S.
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