Electricity: conductors and insulators – Insulators – Special application
Patent
1979-03-19
1981-08-11
Askin, Laramie E.
Electricity: conductors and insulators
Insulators
Special application
277208, 277212FB, 339116C, 339213R, H01B 1758, H01R 1352
Patent
active
042835976
ABSTRACT:
An insulating and sealing sleeve for use with bus bar connectors of underground power distribution systems. The sleeve includes a generally cylindrical elastomeric body having internal sealing rings at one end thereof for sealingly engaging the bus bar and a reentrant and generally flexible constricted portion at the other end thereof. The axially inner end of the reentrant portion includes a tubular portion which extends axially outwardly and joining a tapered portion which flares outwardly and which terminates at the other end of the sleeve. The internal surface of the reentrant portion includes a plurality of grooves along the tubular and flared contours and which sealingly engage the insulation portion of a conductor which is mechanically fastened and electrically connected to the bus bar. The internally tapered grooved portion accommodates a relatively wide range of conductor sizes and the tubular portion ensures that a plurality of grooves will sealingly engage the minimum conductor size. The tapered portion also permits the insulated portion of the conductor to partially enter the sleeve before the stretching operation of the installation begins.
REFERENCES:
patent: 3480905 (1969-11-01), Toedtman
patent: 3483310 (1969-12-01), Krup
patent: 3528051 (1970-09-01), Toedtman et al.
patent: 3710307 (1973-01-01), Cooper, Jr.
patent: 3740692 (1973-06-01), Filhaber
patent: 3816642 (1974-06-01), Toedtman et al.
Askin Laramie E.
International Telephone and Telegraph Corporation
Michals William J.
Raden James B.
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