James E Doherty

US Patent:

7080591, Jul 25, 2006

Filed:

Sep 14, 2004

Appl. No.:

10/940923

Inventors:

James Doherty - Feeding Hills MA, US

Assignee:

Hamilton Sundstrand - Windsor Locks CT

International Classification:

F15B 13/04

US Classification:

91448

Abstract:

A hydraulic assembly has a first fluid valve and a second fluid valve. A switching valve having a first fluid input and a second fluid input also has a fluid output. The first fluid input is in fluid communication with the first fluid valve while the second fluid input is in fluid communication with the second fluid valve. The switching valve is configured to switch fluid communication to the fluid output between the first fluid input and the second fluid input. A fluid actuator is in fluid communication with the fluid output. A housing for the switching valve is provided. The housing has a first portion and a second portion. The first portion has a first fluid passage permitting fluid communication between the first fluid valve and the first fluid input and a second fluid passage permitting fluid communication between the second fluid valve and the second fluid input. The first fluid passage has a first opening and the second fluid passage has a second opening. The second portion has a first seal to seal the first opening and a second seal to seal the second opening.

US Patent:

7695355, Apr 13, 2010

Filed:

Jul 16, 2007

Appl. No.:

11/778283

Inventors:

James Doherty - Feeding Hills MA, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

B64D 13/00
F24F 7/06
B64D 33/02

US Classification:

454 76, 454 71, 454259, 454338, 62241, 244 53 B

Abstract:

A single housing is utilized to mount both an internal fan, and an external alternate flow passage closed by a check valve. The alternate flow passage is defined between an inner and outer wall of the single housing, while the fan is mounted within the inner wall.

US Patent:

46632417, May 5, 1987

Filed:

Jun 13, 1983

Appl. No.:

6/504097

Inventors:

James E. Doherty - Westbrook CT
Charles G. Nessler - Chester CT

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B22F 326

US Classification:

428547

Abstract:

Disclosed is a gas turbine disk made from powder metal, wherein the bore has improved fatigue life compared to conventional articles because the bore is formed from a fine fraction of powder separated from a lot of conventional powder metal suitable for hot isostatic compaction. The outer and rim portions of the disk, which are less prone to fatigue failure, are made from the remainder of the lot but nonetheless have no more limited performance from that resulting when a unitary unseparated powder lot is used. Improved bore fatigue properties result because the coarse fatigue failure-causing nonmetallic inclusions are biased into the outer portions of the disk where they do not have adverse effect.