Kenneth W Hall

US Patent:

54860938, Jan 23, 1996

Filed:

Sep 8, 1993

Appl. No.:

8/118158

Inventors:

Thomas A. Auxier - Palm Beach Gardens FL
Kenneth B. Hall - Jupiter FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B63H 114

US Classification:

416 97R

Abstract:

The leading edge of the turbine airfoil of a turbine blade for a gas turbine engine is cooled by utilizing helix shaped holes that are rectangular in cross-section and curved to produce film holes egressing at low angles adjacent the outer surface of the leading edge. The helix holes extend from the root to the tip of the blade and are parallelly and longitudinally spaced.

US Patent:

59416963, Aug 24, 1999

Filed:

Sep 9, 1997

Appl. No.:

8/926160

Inventors:

V. Hayes Fenstermacher - Raleigh NC
Kenneth Hall - Pinehurst NC

Assignee:

Embrex, Inc. - Research Triangle Park NC

International Classification:

F04B 4312

US Classification:

4174776

Abstract:

A peristaltic pump for precision metering of small quantities of fluid through a plurality of flow lines has a plurality of flexible liquid transfer tubes disposed between a set of tube rollers and an arcuate backing plate. The tube rollers are mounted on a roller support which is rotated about a central axis and causes the tube rollers to roll successively along the tubes, compressing the tubes against the arcuate surface of the backing plate and causing the fluid contained within the tubes to flow progressively in the direction of roller movement. The tube rollers are individually gear driven and turn at a rate which provides a roller surface speed equal to the rate of movement along the tubes, thereby eliminating any frictional drag along the tubes. The flexible tubes are mounted on the pump housing under uniform controlled tension to assure that each tube dispenses fluid at an equal rate. The tube rollers orbit about and are in positive contact with a inner support roller which provides lateral support to the tube rollers and prevents any radial deflection of the tube rollers under the compressive forces exerted against the flexible tubes.

US Patent:

47672684, Aug 30, 1988

Filed:

Aug 6, 1987

Appl. No.:

7/082403

Inventors:

Thomas A. Auxier - Lake Park FL
Kenneth B. Hall - Jupiter FL
Kenneth K. Landis - Tequesta FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F01D 518

US Classification:

416 97R

Abstract:

A hollow, cooled airfoil has a pair of nested, coolant channels therein which carry separate coolant flows back and forth across the span of the airfoil in adjacent parallel paths. The coolant in both channels flows from a rearward to forward location within the airfoil allowing the coolant to be ejected from the airfoil near the leading edge through film coolant holes.