David I Daley

US Patent:

8066472, Nov 29, 2011

Filed:

Nov 6, 2007

Appl. No.:

11/935627

Inventors:

James B. Coffin - Windsor CT, US
David M. Daley - Manchester CT, US
Brady Walker - Wallingford CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F01D 25/16
F01D 25/18

US Classification:

415111, 415 1, 415112, 415175, 415180, 416 1, 416174, 60204, 602261, 60 3908, 184 611, 184 111, 184 112, 384475

Abstract:

A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan shaft where the second bearing is axially spaced from the first bearing. The plurality of conduits includes at least a first conduit aligned with the first bearing and a second conduit aligned with the second bearing. A spray bar includes a plurality of supply orifices that direct lubricating fluid to the first and second bearings via at least the first and second conduits.

US Patent:

20190055886, Feb 21, 2019

Filed:

Oct 22, 2018

Appl. No.:

16/167048

Inventors:

- Farmington CT, US
Paul H. Dolman - Simsbury CT, US
David M. Daley - Manchester CT, US
Denman H. James - West Hartford CT, US
Richard W. Clark - Jensen Beach FL, US

International Classification:

F02C 7/06
F01D 25/20

Abstract:

A lubrication system is disclosed. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.

US Patent:

20140150439, Jun 5, 2014

Filed:

Nov 30, 2012

Appl. No.:

13/690767

Inventors:

- Hartford CT, US
Paul H. Dolman - Simsbury CT, US
David M. Daley - Manchester CT, US
Denman H. James - Windsor CT, US
Richard W. Clark - Vernon CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F02C 7/06

US Classification:

60772, 60 3908

Abstract:

A lubrication system is disclosed. The lubrication system may be used in conjunction with a gas turbine engine for generating power or lift. The lubrication system utilized a flow scheduling valve which reduces lubricant flow to at least one component based on an engine load. The lubrication system may further include a main pump which may be regulated by an engine speed. Thus, a lubrication system which provides a lubricant to engine components based on the load and speed of the engine is possible. The system may improve efficiency of the engine by reducing the power previously spent in churning excess lubricant by at least one engine component as well as reducing the energy used by a lubricant cooler in cooling the excess lubricant. The lubricant cooler size may also be minimized to reduce weight and air drag due to the reduced lubricant flow.