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US Patent 5866853 - Liquid-tight, strain-relief connector for connecting conduit and the like

US Patent Issued on February 2, 1999
Estimated Patent Expiration Date: Icon_subject February 2, 2016Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

There is provided a strain-relief, liquid tight for connecting conduit or the like to a bulkhead such as an electrical box, with the connector having a body having front and rear portions, and a substantially hollow inner throughbore formed along a longitudinal axis thereof. The front portion of the connector body is adapted for attachment to a bulkhead. A flexible seal member is mounted at least partially within the hollow inner throughbore for receiving a conduit inserted therethrough, this seal member facilitating a substantially liquid tight seal about an inserted conduit during use. An at least partially hollow grip for selectively gripping the conduit is included, and a clamp nut is telescoped over the rear portion of the body for selective longitudinal adjustment therealong. The longitudinal adjustment of this clamp nut provides inward radial compression of the flexible grip about the conduit. In a preferred embodiment of the present invention, the grip member comprises a plurality of gripping fingers cantilevered from a ring-like base portion, and the seal member is at least partially disposed within the grip member. A cam surface is provided in the interior of the body, and a compression member on the clamp nut urges the gripping fingers against this cam surface thereby causing the fingers to be compressed radially inward. This results in the conduit being gripped and also enhances the sealing of the seal member about the conduit.

Inventor

Application

No. 133509 filed on 10/07/1993

US Classes:

174/17.06, Liquid seal174/153R, Opposed wall engaging means285/149.1CONNECTOR FOR CONDUIT HOUSING ELECTROMAGNETIC LINE:

Field of Search

174/151, Through wall or plate174/17.06, Liquid seal174/153ROpposed wall engaging means

Examiners

Primary: Kincaid, Kristine
Assistant: Ghosh, Paramita

Attorney, Agent or Firm

US Patent References

2858358, 3285551, 3352961, 3493205, 3667783, 3788582, 4056252, Strain-relief bushing for cables and the like
Issued on: 11/01/1977
Inventor: Simon
4116472, Sealed wall lead-through means for cables in particular for junction boxes
Issued on: 09/26/1978
Inventor: Schmitt
4157799, Cable grommet with traction relief
Issued on: 06/12/1979
Inventor: Simon
4234218, Feedthrough device
Issued on: 11/18/1980
Inventor: Rogers
4250348, Clamping device for cables and the like
Issued on: 02/10/1981
Inventor: Kitagawa
4358079, Moisture resistant clamp for portable cables
Issued on: 11/09/1982
Inventor: Navarro
4387267, Device for the fluid-tight anchorage of an electric conducting cable inlet
Issued on: 06/07/1983
Inventor: Becker
4513172, Clamp fixing device
Issued on: 04/23/1985
Inventor: Matsui
4738636, Strain relief connectors for flexible cord and cable
Issued on: 04/19/1988
Inventor: Bolante
4787657, Screw coupling
Issued on: 11/29/1988
Inventor: Henniger
4814547, Cable connector
Issued on: 03/21/1989
Inventor: Riley ,   et al.
4891470, Screw-type cable fitting
Issued on: 01/02/1990
Inventor: Studenski
5068496, Snap-in connector
Issued on: 11/26/1991
Inventor: Favalora
5132493Device for connecting non-metallic sheathed cable to an electric box
Issued on: 07/21/1992
Inventor: Sheehan

International Class

H02G 003/18

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