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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10473034 B1

PDFFull Text
Date of Patent:
Nov. 12, 2019

Filed:

Jul. 05, 2016

Gas turbine engine starter reduction gear train with geared rotary actuator

Applicant:

Hamilton Sundstrand Corporation, Charlotte, NC (US);

Inventors:

Benjamin T. Harder, DeKalb, IL (US);

Brian McMasters, Caledonia, IL (US);

James Vandung Nguyen, Rockford, IL (US);

Dwayne Leon Wilson, Rockford, IL (US);

Paul F. Fox, Loves Park, IL (US);

Richard Alan Davis, Stillman Valley, IL (US);

Richard R. Hergert, Rockton, IL (US);

Jeffrey Todd Roberts, Winnebago, IL (US);

Jeff A. Brown, Cherry Valley, IL (US);

Daniel Richard Walker, Rockford, IL (US);

Matthew Allen Slayter, Rockford, IL (US);

William G. Sheridan, Southington, CT (US);

Assignee:

HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);

Attorney:

Cantor Colburn LLP

Primary Examiner:

Jason D Shanske

Assistant Examiner:

Danielle M Christensen

Int. Cl.
CPC ...
F02C 7/275 (2006.01); F02C 7/36 (2006.01); F16H 1/46 (2006.01); F01D 21/12 (2006.01); F01D 25/34 (2006.01); F02C 7/277 (2006.01); F02C 7/32 (2006.01);
U.S. Cl.
CPC ...
F02C 7/275 (2013.01); F01D 21/12 (2013.01); F01D 25/34 (2013.01); F02C 7/277 (2013.01); F02C 7/32 (2013.01); F02C 7/36 (2013.01); F16H 1/46 (2013.01); F05D 2220/32 (2013.01); F05D 2220/323 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/85 (2013.01);
Abstract

According to an aspect, a system for a gas turbine engine includes a reduction gear train operable to drive rotation of a starter gear train that interfaces to an accessory gearbox of the gas turbine engine. The reduction gear train includes a starter interface gear that engages the starter gear train and a core-turning clutch operably connected to the starter interface gear. The reduction gear train also includes a geared rotary actuator including a primary planetary gear system, where the geared rotary actuator is operably connected to the core-turning clutch. The reduction gear train further includes a secondary planetary gear system operably connected to the primary planetary gear system and a core-turning input. The system also includes a mounting pad with an interface to couple a core-turning motor to the core-turning input of the reduction gear train.

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