US 4,835,342 A · Strain relief liquid tight electrical connector

Abstract

A strain relief electrical cable fitting includes an externally threaded tubular body member divided by an inside inclined shoulder and outside flange into an upper compression chamber and a lower coupling section, a gland cap with a central top opening engaging the body member top thread. Housed in the compression chamber is an assembly of a rubber packing member and a nylon grip member, the packing member including an upper axially bored cylindrical section and peripherally spaced longitudinal fingers and the grip member including an upper ring encircling the packing fingers and abutting the cylindrical section underface and longitudinal fingers interdigitating the packing fingers and terminating in follower sections engaging the shoulder so that tightening of the cap compresses the packing member by way of a washer to advance and contract the grip fingers to clamp a fitting engaged cable and to contract the packing section bore and effect a hermetic seal of the cable.

Claims15

Dependent claims

A strain relief electrical fitting comprising:

a tubular body member having an inwardly projecting abutment below the top thereof;
a gland cap having a central opening in threaded engagement with the upper part of said body member and delineating with said abutment and the inside face of said body member a compression chamber;
a compressible packing member located in said compression chamber and including a cylindrical upper section with an axial bore and peripherally spaced first fingers longitudinally depending from said upper section;
a grip member located in said compression chamber and including an upper ring encircling said packing member and peripherally spaced grip second fingers depending from said ring and interdigitating said first fingers and having top faces underlying the bottom face of said packing member upper section and cooperating with said body member and packing member whereby longitudinal contraction of said compression chamber by said gland cap compresses said packing member upper section to radially contract said axial bore and depress said grip member to contract the lower ends of said grip fingers.

1 more element

Dependencies are inferred from the claim text.

Strain relief liquid tight electrical connector

Life of this patent

Strain relief liquid tight electrical connector

Life of this patent

Abstract

Claims15