Electric switch and improved device using same

Details Electric switch and improved device using same Electric switch and improved device using same

1984-01-27

1986-12-30

Macon, Robert S.

Electricity: circuit makers and breakers

Fluid pressure

Piston

200146R;148R;151, H01H 3306

Patent

active

RE0323217

ABSTRACT:
A high speed switch usable at high voltage includes a pair of contacts movable apart along a fixed line. When the contacts are normally interconnected, at least one of them contributes to the definition of an enclosed chamber. Pressurization of the chamber by the ignition of a power cartridge therein rapidly drives the contacts apart, forming a first gap between them. When the contacts are interconnected, a first one of them is electrically connected to a terminal. As the contacts move apart, a second gap forms between the first contact and the terminal. The second gap is electrically insulated and may both be shielded from the ignition products of the cartridge and have any arc forming therein constricted and subjected to arc-extinguishing gas. The contacts may be shunted by a fuse to which current is commutated after the contacts move apart.

REFERENCES:
patent: 2104914 (1938-01-01), Temple, Jr.
patent: 2247815 (1941-07-01), Lohausen
patent: 2861153 (1958-11-01), Erk et al.
patent: 3076076 (1963-01-01), Bridges
patent: 3129307 (1964-04-01), DeVargas
patent: 3144536 (1964-08-01), Bridges et al.
patent: 3308259 (1967-03-01), Hulteen et al.
patent: 3356808 (1967-12-01), Dakin
patent: 4013852 (1977-03-01), Roberts et al.
patent: 4342978 (1982-08-01), Meister
patent: 4494103 (1985-01-01), Jarosz et al.
Product catalog published by A. B. Chance Co., Centralia, Mo., Section 1005, p. 3, "The Saf-T-Gap Interrupter", dated Jul. 1976.

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