Gas line lead-in assembly

• US 4,162,801 A
• Filed: 12/16/1977
• Issued: 07/31/1979
• Est. Priority Date: 12/16/1977
• Status: Expired due to Term

• Current Assignee: Aeroquip Corporation (Eaton Corporation PLC.)
• Original Assignee: Aeroquip Corporation (Eaton Corporation PLC.)
• Inventors: Evans, Bryce B., Kresky, Fred C., Loveland, John H.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US05/861,106
• Time in Patent Office: 592 Days
• Field of Search: 285/45, 285/47, 285/138, 285/DIG. 4, 285/114, 285/382, 285/52, 285/53, 285/15, 285/226, 285/256
• US Class Current: 285/45
• CPC Class Codes: F16L 47/005 the first pipe being joined to the ends of two other pipes placed one inside the other, e.g. gas pipe with protective sheath
• CPC Class Codes: F16L 47/24 for joints between metal and plastics pipes

Abstract

A conduit assembly for natural gas lines utilized at transition locations wherein a synthetic plastic gas supply tube connects to a meter or other fitting located above the ground level. The lead-in assembly utilizes a fitting having a rigid elongated nipple to which a polyethylene tube is sealed by means of a crimped socket; and a convoluted metal hose attached at one end to the fitting, and sealed at the other end to the polyethylene tube, encompasses the nipple and tube providing effective protection thereof, yet permits the assembly to be readily bent and formed by hand without kinking of the tube.

Claims

1. A lead-in conduit assembly for gas lines and the like characterized by its flexibility comprising, in combination, an annular end fitting having attachment means defined thereon and including an annular nipple having a first end sealingly affixed to said fitting and a second free end, a flexible synthetic plastic tube coaxially sealingly mounted on said nipple free end in communication therewith, an annular socket member mounted upon said nipple free end in radial spaced relationship thereto wherein said member and nipple free end define an annular socket chamber, an end of said tube being received within said socket chamber, said socket member being radially contracted on said tube sealingly and frictionally mounting said tube upon said nipple free end, an annular plug closely circumscribing said tubing axially spaced from said nipple, and a flexible metal hose encompassing said nipple and radial spaced therefrom having a first end mounted on said fitting and a second end mounted over said plug, means attaching said hose second end to said plug, said metal hose being capable of flexible lateral deformation whereby said assembly may be readily formed into a bend without kinking of said tube.

2. In a lead-in conduit assembly as in claim 1 wherein said metal hose comprises a tube having a convoluted surface to facilitate bending of said assembly.

3. In a lead-in conduit assembly as in claim 1, said socket member including aradially crimped portion to produce said radial contraction of said socket member on said tube.

4. In a lead-in conduit assembly as in claim 1, said metal hose being of a convoluted wall construction, and said mean attaching said hose second end to said plug including an annular cap mounted on said plug having a circumferential wall portion overlying said metal hose second end and crimped thereon.

5. In a lead-in conduit assembly as in claim 4, at least one annular rib defined upon said fitting, and a convolution of said hose first end being received upon said rib establishing a mechanical connection between said fitting and metal hose.