John David Morvant

US Patent:

6497416, Dec 24, 2002

Filed:

Dec 17, 1996

Appl. No.:

08/766137

Inventors:

John D. Morvant - Houston TX 77039

International Classification:

F16L 1700

US Classification:

277602, 277584, 277626, 277627, 277650

Abstract:

A back-up ring is disclosed wherein the ring is a knitted mesh section substantially surrounded by an outer coating covering substantially all of the knitted wire mesh section, the coating having contact with the outer and inner surface of an annulus.

US Patent:

6863278, Mar 8, 2005

Filed:

Dec 23, 2002

Appl. No.:

10/328274

Inventors:

John D. Morvant - Houston TX, US

International Classification:

F16L017/00

US Classification:

277602, 277584, 277626, 277627, 277650

Abstract:

A back-up ring is disclosed wherein the ring is a knitted mesh section substantially surrounded by an outer coating covering substantially all of the knitted wire mesh section, the coating having contact with the outer and inner surface of an annulus.

US Patent:

55517030, Sep 3, 1996

Filed:

Jan 29, 1993

Appl. No.:

8/011338

Inventors:

John D. Morvant - Houston TX

International Classification:

F16J 1510

US Classification:

277188R

Abstract:

A sealing device having a body section and two anti-extrusion sections is disclosed, the body section being disposed between the anti-extrusion sections. The body section includes sealing surfaces for enclosures in which the sealing device is located. The anti-extrusion section prevents extrusion of the body section.

US Patent:

53060210, Apr 26, 1994

Filed:

Sep 24, 1992

Appl. No.:

7/950820

Inventors:

John D. Morvant - Houston TX

International Classification:

F16J 1532

US Classification:

277188R

Abstract:

A dealing device having a body section and an anti-extrusion section is disclosed, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. The anti-extrusion section prevents extrusion of the body section.

US Patent:

62673831, Jul 31, 2001

Filed:

Dec 30, 1997

Appl. No.:

9/000893

Inventors:

John D. Morvant - Houston TX

International Classification:

F16J 920
F16J 1532

US Classification:

277439

Abstract:

A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti-extrusion section prevents extrusion of the body section.

US Patent:

56158963, Apr 1, 1997

Filed:

Dec 22, 1993

Appl. No.:

8/171832

Inventors:

John D. Morvant - Houston TX

International Classification:

F16J 1510

US Classification:

277229

Abstract:

A seal ring and a stack of seal are disclosed wherein each seal has a knitted mesh section substantially surrounded by an outer coating covering substantially all of the knitted wire mesh section, the coating forming raised sealing surfaces to form interference seals with the outer and inner surface of an annulus. The stack includes spacing between seals in the stack to prevent damage to the sealing surfaces of succeeding seals in the stack. The stack may be bidirectional.

US Patent:

55711073, Nov 5, 1996

Filed:

Sep 8, 1994

Appl. No.:

8/303219

Inventors:

Sanan B. Shaibani - New Orleans LA
Bahram Khoobehi - New Orleans LA
John S. Morvant - Kenner LA

International Classification:

A61B 1736

US Classification:

606 4

Abstract:

An apparatus for profiling a cornea of an eye is disclosed which comprises a topography instrument for determining the curvature of the cornea, a computer system for receiving information from the topography instrument for determining whether any areas of the cornea need to be ablated to correct for any abnormalities of the cornea, a diffractive optical element which is constructed based upon the determination of which areas of the cornea need to be ablated, and a beam of radiation being projected at the diffractive optical element for the diffractive optical element to modulate the beam of radiation and direct the modulated beam of radiation at the cornea for ablating the cornea to correct for any abnormalities of the cornea.

US Patent:

51657031, Nov 24, 1992

Filed:

Mar 20, 1991

Appl. No.:

7/672675

Inventors:

John D. Morvant - Houston TX

Assignee:

OEM Components, Inc. - Houston TX

International Classification:

P16J 1510
E21B 33128

US Classification:

277188A

Abstract:

A sealing system is disclosed that includes an elastomer or other resilient seal material for a center ring bounded by a pair of mesh rings coated with a flexible material. Alternatively, a sealing system is disclosed that uses a plurality of mesh rings, each of the rings being coated with a flexible material.