David C Leach

US Patent:

6431555, Aug 13, 2002

Filed:

Mar 14, 2001

Appl. No.:

09/805359

Inventors:

Mark Stewart Schroder - Hendersonville NC
David Leach - Simpsonville SC

Assignee:

General Electric Company - Schenectady NY

International Classification:

F16J 1502

US Classification:

277628, 277630, 277632, 415230

Abstract:

A plurality of arcuate, circumferentially extending leaf seal segments form an annular seal spanning between annular sealing surfaces of inner and outer casings of a turbine. The ends of the adjoining seal segments have circumferential gaps to enable circumferential expansion and contraction of the segments. The end of a first segment includes a tab projecting into a recess of a second end of a second segment. Edges of the tab seal against the sealing surfaces of the inner and outer casings have a narrow clearance with opposed edges of the recess. An overlying cover plate spans the joint. Leakage flow is maintained at a minimum because of the reduced gap between the radially spaced edges of the tab and recess, while the seal segments retain the capacity to expand and contract circumferentially.

US Patent:

20120308947, Dec 6, 2012

Filed:

Jun 6, 2011

Appl. No.:

13/154027

Inventors:

Patrick Benedict Melton - Horse Shoe NC, US
David Leach - Simpsonville SC, US
Robert Joseph Rohrssen - Simpsonville SC, US
Roy Marshall Washam - Clinton SC, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F23C 7/00
B21D 53/00

US Classification:

431351, 2989002

Abstract:

A combustor having a pressure feed is provided and includes an outer vessel, an intermediate vessel disposed within the outer vessel to form an outer annulus, an inner vessel disposed within the intermediate vessel to form an inner annulus between the intermediate and inner vessels, by which upstream portions of fuel nozzles disposed within the inner vessel are fed, and an internal volume within the inner vessel about downstream portions of the fuel nozzles and a tubular assembly by which the outer annulus and the internal volume are communicative.