Non-load tap-changer switch

Details Non-load tap-changer switch Non-load tap-changer switch

1974-12-10

1976-11-16

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 8R, H01H 2118

Patent

active

039925951

ABSTRACT:
Cylindrical tap terminals are attached to a base plate and are positioned symmetrically around an opening in the base plate. A contact carrier is positioned in the base plate opening and is dimensioned for rotation therein. A movable contact blade is disposed in a radial opening in the contact carrier and is dimensioned to connect together two adjacent tap terminals. A shaft with an inclined surface thereon extends into another opening in the contact carrier and is coupled to an operating handle. The handle may be pulled to move the inclined surface and permit movement of the contact blade away from the tap terminals. Rotation of the handle rotates the shaft, the contact carrier, and the contact blade to another position. When in position, a coil spring forces the inclined surface against the contact blade to maintain adequate electrical contact pressure between the blade and the tap terminals.

REFERENCES:
patent: 1678129 (1928-07-01), Tuttle
patent: 1752213 (1930-03-01), Treanor
patent: 2675435 (1954-04-01), Framhein
patent: 2903530 (1959-09-01), Wilson, Jr.
patent: 3005882 (1961-10-01), White
patent: 3170048 (1965-02-01), Glatz et al.
patent: 3177305 (1965-04-01), Lehman
patent: 3539736 (1970-11-01), Naimer
patent: 3636489 (1972-01-01), Colangelo et al.

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