Watertight wall feedthrough for electrical ground

Details Watertight wall feedthrough for electrical ground Watertight wall feedthrough for electrical ground

1978-03-15

1980-10-07

McGlynn, Joseph H.

Geometrical instruments

339 29R, 339 94A, 339263R, 52221, H01R 1352

Patent

active

042264987

ABSTRACT:
An electrical wall feedthrough fitting is cast directly in a concrete wall and comprises an electrically conducting elongated member each of whose ends is formed with an outwardly open blind bore. An electrically insulating sleeve surrounds all but the ends of this member to prevent contact of the conductive member with the reinforcement in the wall. A terminal screw can be fitted into each of the bores for forming a good electrical connection. The middle part of a conducting member may be constituted as a flexible cable to allow the distance between the two ends to be varied or to allow the two ends to be offset relative to each other. A seal at each of the ends may be compressed to further increase the watertightness of the seal around such a fitting.

REFERENCES:
patent: 3400247 (1968-09-01), Deacon
patent: 3850501 (1974-11-01), Butterfield et al.
patent: 3960427 (1976-06-01), Praget et al.

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