Strain relief liquid tight electrical connector
First Claim
1. 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.
3 Assignments
0 Petitions
Accused Products
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.
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Citations
15 Claims
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1. A strain relief electrical fitting comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A core assembly for a strain relief electrical fitting comprising:
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an elastomeric packing member including a cylindrical upper section having an axial bore and peripherally spaced longitudinally extending first fingers integrally formed with and depending from said upper section and a resilient grip member including an upper ring encircling and engaging the upper parts of said first fingers and grip fingers integrally formed with and depending from said ring and interdigitating said first fingers and having top faces projecting inwardly from said ring and contiguous with the underface of said packing member upper section. - View Dependent Claims (15)
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Specification