Brittle lined pipe connector

US5236231A · kind A · utility

Assignee

• Union Oil Company of California · US

Inventors

• William C. Allen · Pasadena, US
• Stephen Pye · Los Angeles, US
• Gerald M. Hamblin · St. Helena, US
• Jose M. Perez · Cambridge, US
• William E. Amend · Yorba Linda, US
• John D. Bush · Palm Desert, US
• David Holligan · Manila, PH
• Delbert E. Pyle · San Fernando, US

Key dates

• Filing date: Jun 7, 1991
• Grant date: Aug 17, 1993
• Expiry date: Jun 7, 2011

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L58/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

One or more rigid sealing segments are attached to pipe end sections and the assembly lined to form a fluid-resistant joint. A segment surface forms the primary sealing interface of lined pipe sections without the need for a conventional removable liner edge seal. The lining process and configuration sealably bonds the liner to the fluid-resistant sealing segment and to the non-fluid-resistant pipe. The manner of bonding both avoids (or limits) liner stress and covers the non-fluid-resistant material of the pipe. In an alternative embodiment, the sealing segments are engaged at mating threaded surfaces, the mated threads providing a single primary sealing and engagement interface. Redundant liner end sealing may also be accomplished by a sandwiched deformable material if added reliability of sealing harsh fluids is desired. In another embodiment, portions of the rigid sealing segments are slidably mounted relative to each other and the primary seal interface is temperature actuated.