Justin M Whitehead

US Patent:

7025384, Apr 11, 2006

Filed:

Oct 31, 2002

Appl. No.:

10/284650

Inventors:

Justin M. Whitehead - Katy TX, US
Gary L. Galle - Houston TX, US
Karl A. Parfrey - Houston TX, US

Assignee:

Vetco Gray Inc. - Houston TX

International Classification:

F16L 55/00

US Classification:

285 55, 285251, 285247

Abstract:

A device for mechanically securing a tubular liner in a pipe having a tubular member and connectors on each end. The connector has a bore with an internal seat that may have grooves and be tapered depending upon the application. The liner extends through the tubular member into the bore. The ends of the liner are radially and plastically deformed into engagement with the seats. An inner ring is positioned inside the liner to retain the end of the liner in engagement with the seat. The inner ring may be held by threads or by radially and plastically deforming it. The connectors are mounted to the tubular member independently of the liner, such as by adhesive. The liner may be replaced by removing the inner rings without affecting the connection between the tubular member and the connectors.

US Patent:

60824026, Jul 4, 2000

Filed:

Mar 16, 1999

Appl. No.:

9/268911

Inventors:

Gary Galle - Houston TX
Justin Whitehead - Houston TX

Assignee:

ABB Vetco Gray, Inc. - Houston TX

International Classification:

F16L 3728

US Classification:

13761404

Abstract:

A hydraulic coupling having a lower tubular member and an upper tubular member for sealing engagement one with the other. The lower and upper members are maintained in axial engagement by an axial load. The lower member and the upper member each have an annular body having an axial bore therethrough for the passage of fluid. A metal, concentric inner annular seal leg and outer annular alignment leg extend from the body of the upper member, defining an annular sealing recess between the seal legs. An annular metal sealing portion or wall extends from the body of the lower member and has an inner diameter that defines a sealing surface for insertion into the sealing recess for sealingly engaging the inner annular seal leg. The sealing recess has a backup elastomer ring, which is axially compressed by the sealing portion. When the couplers are made up, the metal-to-metal seal is achieved due to an interference fit between the coupler halves.