Michael Henry Mccune

US Patent:

7591754, Sep 22, 2009

Filed:

Mar 22, 2006

Appl. No.:

11/391764

Inventors:

Loc Duong - San Diego CA, US
Michael E. McCune - Colchester CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F16H 57/08

US Classification:

475347, 464 79, 475346

Abstract:

A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

US Patent:

7824305, Nov 2, 2010

Filed:

Aug 6, 2009

Appl. No.:

12/536642

Inventors:

Loc Duong - San Diego CA, US
Michael E. McCune - Colchester CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F16H 57/08

US Classification:

475347, 464 79, 475346

Abstract:

A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls.

US Patent:

7950151, May 31, 2011

Filed:

Aug 6, 2009

Appl. No.:

12/536650

Inventors:

Loc Duong - San Diego CA, US
Michael E. McCune - Colchester CT, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

B23P 11/00
B23P 15/14
F16H 57/08

US Classification:

298931, 2952514, 29557, 475347, 475346, 464 79

Abstract:

A method of constructing an integral coupling system containing a sun gear is disclosed. An integral sun gear is provided that has a sun gear component and a connection shaft. A first straight flat inner edge is machined on a first diaphragm to use as a datum point, and then the straight flat edge is fixtured. A tapered outer edge is machined on the first diaphragm, and the first diaphragm is welded to the integral sun gear. The flat inner edge is generally perpendicular to a central axis of the connection shaft.

US Patent:

20150377066, Dec 31, 2015

Filed:

Dec 31, 2013

Appl. No.:

14/769015

Inventors:

- Farmington CT, US
Xiaolan Hu - San Diego CA, US
Ernest Boratgis - South Windsor CT, US
Michael E. McCune - Colchester CT, US

International Classification:

F01D 25/20
F04C 13/00
F01D 25/16
F01D 15/08
F01D 15/12
F01D 5/02
F04C 2/344
F04C 15/00

Abstract:

The present disclosure is applicable to all gear trains using a journal bearing as a means of supporting gear shaft rotation. It is related in some embodiments to a system and method for supplying lubricant to the journal bearings of a gear-turbofan engine gear train when the fan rotor is subjected to a wind-milling condition in both directions, either clockwise or counter-clockwise.