Watertight wall feedthrough for electrical ground
OwnerWerner Hauffinventor
Life of this patent
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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.
Claims10
An electrical feedthrough fitting and grounding assembly comprising:
- a cast wall having a pair of faces;
- respective electrically conductive end pieces embedded in said cast wall and having ends lying at said faces, each end having an outwardly open blind bore exposed at the respective face;
- a deformable and electrically conductive middle piece extending between and electrically interconnecting said end pieces;
- an electrically insulating sleeve having a middle sleeve part surrounding said middle piece and a pair of end sleeve parts respectively surrounding said end pieces except at said ends thereof;
- and
- respective terminal screws threaded into said bores.
Dependencies are inferred from the claim text.