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Patent CA1093607A successfully refreshed from Google Patents.
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CA1093607A Expired / Lapsed CA ⏱️ 0.0 years remaining

Plastic tube branch fitting for gas service connector

Assignee: Dresser Industries Inc
•
Filing: 1978-10-06
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Granted: 1981-01-13
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Expires: 1998-10-06
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Abstract

Abstract PLASTIC TUBE BRANCH FITTING FOR GAS SERVICE CONNECTOR Abstract of the Disclosure The side outlet branch connection of a gas service connector is internally threaded at the first and third of three success-ively enlarged diametral steps which are shoulder separated from inlet to outlet. Secured extending outward from the innermost thread and adapted to support received plastic tubing is a tubular metal insert. The insert is formed from about its central portion to its outboard end in tandem sections of increasing diameter, each of which includes a plurality of longitudinally spaced concentric ribs. The intervening spacings between ribs in each of the tan-dem sections are of controlled dimension and diameter relative to initial wall thickness of tube being received. A gasket surround-ing received tubing on the insert in the third of the diametral steps is axially compressed by a nut screw threaded thereat until radial distortion of the gasket deforms the surrounded tubing into a tensile interlock about the smaller diameter rib section of the insert. 1a

Inventors

  • 👤 William L. Hulslander
  • 👤 Gerald L. Anderson

Bibliographic Details

Application Number —
Jurisdiction CA
Data Source google_patents
Last Synchronized 2026-11-08 03:29
CPC Classifications
—

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 238 words
In a gas service connector including separable body components adapted for mounting on a gas main and including a house outlet connection having a passage through which to receive gas flow from an opening in the gas main, the improve-ment for forming a joint connection with plastic tubing in said house outlet comprising in combination: a) said passage being defined having a plurality of axial sections arranged in tandem and progressively increasing in diameter from a first section in the vicinity of the passage inlet to a last section in the vicinity of the passage outlet; b) a tubular metal insert on which to support plastic tubing to be jointed and extending inward of said passage for secured placement in said first section thereof, said insert including an axially local section intermediate its ends being of smaller diameter than the adjacent sections axially juxta-posed thereto with a plurality of annular ribs radially raised thereon and longitudinally spaced apart at a predetermined pitch; c) an annular gasket surrounding received tubing sup-ported on said insert, said gasket being axially located at the same axial location as the local insert section and responsive when compressed to deform the tubing wall thereat into a longi-tudinal interlock with the ribs of said local insert section; and d) nut means for compressing said gasket to deform the tubing wall into a longitudinal interlock relation with the ribs and spacings of said local insert section.
Claim 2
Dependent Claim 238 words
In a gas service connector including separable body components adapted for mounting on a gas main and including a house outlet connection having a passage through which to receive gas flow from an opening in the gas main, the improve-ment for forming a joint connection with plastic tubing in said house outlet comprising in combination: a) said passage being defined having a plurality of axial sections arranged in tandem and progressively increasing in diameter from a first section in the vicinity of the passage inlet to a last section in the vicinity of the passage outlet; b) a tubular metal insert on which to support plastic tubing to be jointed and extending inward of said passage for secured placement in said first section thereof, said insert including an axially local section intermediate its ends being of smaller diameter than the adjacent sections axially juxta-posed thereto with a plurality of annular ribs radially raised thereon and longitudinally spaced apart at a predetermined pitch; c) an annular gasket surrounding received tubing sup-ported on said insert, said gasket being axially located at the same axial location as the local insert section and responsive when compressed to deform the tubing wall thereat into a longi-tudinal interlock with the ribs of said local insert section; and d) nut means for compressing said gasket to deform the tubing wall into a longitudinal interlock relation with the ribs and spacings of said local insert section.
Claim 3
Dependent Claim 31 words
The improvement according to claim 1 in which the radial rise of said ribs from its adjacent spacing is up to about ten percent of the thickness of the supported tubing.
Claim 4
Dependent Claim 27 words
The improvement according to claim 2 in which said local insert section includes at least five ribs spaced apart at a pitch distance of about 3/32 inches.
Claim 5
Dependent Claim 23 words
The improvement according to claim 3 in which said ribs have a blunt edge and an axial width of less than 1/64 inches.
Claim 6
Dependent Claim 35 words
The improvement according to claim 2 in which said insert includes a second section tandemly downstream of said local sec-tion, said second section including a plurality of longitudinally spaced apart annular ribs radially raised thereon.
Claim 7
Dependent Claim 34 words
The improvement according to claim 5 in which the ribs of said local insert section are of a diameter approximately ninety to ninety-five percent the diameter of the ribs on said second insert section.
Claim 8
Dependent Claim 22 words
The improvement according to claim 6 in which said second insert section is of greater axial width than said local insert section.

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