Contact arrangement for a switch

Details Contact arrangement for a switch Contact arrangement for a switch

1983-07-08

1984-07-10

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147A, H01H 3366

Patent

active

044594461

ABSTRACT:
A configuration for a contact arrangement is disclosed for a switch having two coaxially positioned and generally cylindrical contacts. Each contact contains a coaxial core of ferromagnetic material, and a current-carrying envelope surrounding the core has the form of a helix. The helical envelope creates a current component which sets up a magnetic field in the widening contact gap when the contacts are separated that disperses arcing. Moreover, the field reinforces the closure pressure when the contacts are in their closed position. Ellipsoid shaping enables the field to be normal at all points of the contact-making surfaces.

REFERENCES:
patent: 2411893 (1946-12-01), Peters
patent: 3131276 (1964-04-01), Watson
patent: 3263050 (1966-07-01), Pflanz
patent: 3711665 (1973-01-01), Dethlefsen

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