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 10190672 B1

Date of Patent:

Jan. 29, 2019

Filed:

Apr. 04, 2016

Gearbox lubrication system

Applicant:

Bell Helicopter Textron Inc., Fort Worth, TX (US);

Inventor:

Ryan T. Ehinger, Southlake, TX (US);

Assignee:

BELL HELICOPTER TEXTRON INC., Fort Worth, TX (US);

Attorney:

Patent Capital Group

Primary Examiner:

Justin M Benedik

Int. Cl.

CPC ...

B64C 27/06 (2006.01); F16H 57/04 (2010.01); B64C 27/14 (2006.01); B64D 35/00 (2006.01); B64C 27/00 (2006.01); F01M 1/12 (2006.01);

U.S. Cl.

CPC ...

F16H 57/0442 (2013.01); B64C 27/006 (2013.01); B64C 27/06 (2013.01); B64C 27/14 (2013.01); B64D 35/00 (2013.01); F16H 57/0445 (2013.01); F01M 2001/123 (2013.01); F16N 2260/20 (2013.01); F16N 2260/50 (2013.01);

Abstract

According to one embodiment, a rotorcraft includes a body, a rotor blade, a drive system that can be operated to rotate the rotor blade, and an emergency valve control unit. The drive system contains a first gearbox assembly, a second gearbox assembly, a first lubrication system that can deliver lubricant to the first gearbox assembly, and a second lubrication system that can deliver lubricant to the second gearbox assembly. The drive system also contains an emergency valve that can be opened to deliver lubricant from the first lubrication system to the second gearbox assembly. The emergency valve control unit can instruct the emergency valve to open.

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