Expansion joint with interior grounding continuity bond

Details Expansion joint with interior grounding continuity bond Expansion joint with interior grounding continuity bond

1979-09-24

1981-02-10

Envall, Jr., Roy N.

Electricity: conductors and insulators

Conduits, cables or conductors

Combined

174 13, 174 21CA, 174 99E, 174 78, H02G 1508

Patent

active

042503507

ABSTRACT:
To assure safety, an expansion joint in an electrical system must have grounding continuity. A telescoping unit is provided using a braided-conductor bond inside the joint thereby protecting it from ambient contaminants. A high integrity ground continuity is assured even if the conduit is painted or becomes corroded. Selected components are proportioned with respect to each other to assure accurate component alignment with no possibility of relative movement, during assembly, which would endanger ground continuity. Stop means are incorporated in the design to limit the twisting of the grounding jumper during assembly.

REFERENCES:
patent: 3154632 (1964-10-01), Browne
patent: 3783178 (1974-01-01), Philibert et al.
patent: 3949152 (1976-04-01), Floessel
"Power Cable Shield Terminator", IBM Tech. Disclosure Bulletin, vol. 11, No. 8, 1/69.

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