Fill control for sealing chamber in drainable enclosure for expl

Details Fill control for sealing chamber in drainable enclosure for expl Fill control for sealing chamber in drainable enclosure for expl

1979-06-29

1980-08-05

Askin, Laramie E.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

174 23R, 174 77R, H02B 302

Patent

active

042163498

ABSTRACT:
An electrical fitting for use in a conduit run which includes a sealing chamber into which a compound is placed to prevent the passage of gasses, vapors, or flames from one end of the fitting to the other. The fitting includes a drainage port to prevent the collection of water and a filling port through which the sealing compound is placed in the sealing chamber. The drainage port and sealing chamber have coplanar upper limits whereby any excess sealing compound placed in the sealing chamber is drained off through the drainage port. An interior shield member of the body shields the upper opening of the drainage port whereby no sealing compound can enter the drainage port directly from the filling port. Thus, there can be no flow of sealing compound through the drainage port until the sealing chamber has been filled. Underfill and overfill of the sealing chamber are prevented, and no core or plug projects upward from the drainage port during filling. Depending upon the type of sealing compound used, a disposable protector with a through passage may be placed in the lower portion of the drainage port to protect the threads of the drainage port from contact with the excess sealing compound.

REFERENCES:
patent: 2711438 (1955-06-01), Bissell
patent: 2835722 (1958-05-01), Appleton

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