Vacuum-type circuit interrupter with means for protecting its be

Details Vacuum-type circuit interrupter with means for protecting its be Vacuum-type circuit interrupter with means for protecting its be

1976-05-06

1978-01-31

Chatmon, Jr., Saxfield

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 83D, 200146AA, 267 65C, 313146, H01H 3366

Patent

active

040717275

ABSTRACT:
A guide sleeve for the movable contact rod of a vacuum-type circuit interrupter fits within the usual tubular bellows of the interrupter. The bellows has some of its annular convolutions located axially-inwardly of the axially-inner end of the guide sleeve. A coating of self-lubricating plastic material is provided on the outer peripheral surface of the guide sleeve and on its inner end surface. This coating is sufficiently close to the internal surface of the bellows as to be contacted by said convolutions when the contact rod is axially moved during operation of the interrupter. The lubricating properties of the coating reduce friction between said convolutions and said coated sleeve.

REFERENCES:
patent: 2920169 (1960-01-01), Jennings
patent: 2943167 (1960-06-01), Hughes et al.
patent: 2979587 (1961-04-01), Jennings
patent: 3036180 (1962-05-01), Greenwood
patent: 3087034 (1963-04-01), Beers
patent: 3950628 (1976-04-01), Hruda
patent: 3969598 (1976-07-01), Sofianek et al.

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