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.

Date of Patent:
Jul. 07, 2015

Filed:

Sep. 07, 2011
Applicant:

Jacob Johannes Van Der Westhuizen, South Jordan, UT (US);

Inventor:

Jacob Johannes van der Westhuizen, South Jordan, UT (US);

Assignee:

GROEN BROTHERS AVIATION, INC., Salt Lake City, UT (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 27/32 (2006.01); B64C 27/18 (2006.01); B64C 27/02 (2006.01);
U.S. Cl.
CPC ...
B64C 27/32 (2013.01); B64C 27/025 (2013.01); B64C 27/18 (2013.01);
Abstract

A rotorcraft is disclosed. The rotorcraft may include an airframe, at least one engine connected to the airframe, and a rotor connected to the airframe. The rotor may include a hub, a rotor blade, and a feathering spindle connecting the rotor blade to the hub. The rotorcraft may further include a flow of oil passing proximate the feathering spindle. The flow of oil may cool the feathering spindle during take off and landing of the rotorcraft. Additionally, the flow of oil may heat the feathering spindle during travel of the rotorcraft at altitude.


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van der Westhuizen, Jacob. (2015). Feathering-spindle-bearing lubrication and temperature control (U.S. Patent No. 9073631). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9073631

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