Disconnect switch

Details Disconnect switch Disconnect switch

1983-12-07

1985-03-12

Shepperd, John W.

Electricity: circuit makers and breakers

High-potential type

Rotating and pivoted

200337, H01H 3136

Patent

active

045047081

ABSTRACT:
A switch for making and breaking a connection between a load circuit and a power line, with two parallelogrammatic linkages terminating in scissorlike contactor pairs, has limitedly swivelable and/or extensible cross-links interconnecting aligned pivotal junctions of the two linkages to provide them with a certain relative mobility. In an operating position, part-cylindrical armatures detachably secured to the two contactor pairs grip respective portions of an elongate countercontact fixedly suspended between a pair of rings attached to the power line, this countercontact comprising a metallic supporting tube also provided with part-cylindrical armatures in the region of the contactor pairs. Each armature may comprise several metallic layers on a base of copper, namely an inner layer of silver, a protective layer of tin on top thereof, and an outer silver layer. The armatures could also be made, at least in part, of a scorchproof material such as silver/cesium oxide.

REFERENCES:
patent: 893694 (1908-07-01), Allenson
patent: 3036168 (1962-05-01), Bagnagatti
patent: 3755634 (1973-08-01), Bachler et al.
patent: 4297795 (1981-11-01), Licari

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