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.:
Date of Patent:
Feb. 25, 2020
Filed:
Nov. 18, 2016
Applicant:
Textron Innovations Inc., Providence, RI (US);
Inventors:
Jouyoung Jason Choi, Fort Worth, TX (US);
Gary Miller, Fort Worth, TX (US);
Richard Erler Rauber, Fort Worth, TX (US);
Thomas Clement Parham, Jr., Fort Worth, TX (US);
Alan Carl Ewing, Fort Worth, TX (US);
Frank Bradley Stamps, Fort Worth, TX (US);
Assignee:
Textron Innovations Inc., Providence, RI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 29/00 (2006.01); B64C 27/41 (2006.01); B64C 27/54 (2006.01); B64C 27/473 (2006.01); B64C 27/51 (2006.01); B64C 27/52 (2006.01); B64C 27/28 (2006.01);
U.S. Cl.
CPC ...
B64C 29/0033 (2013.01); B64C 27/28 (2013.01); B64C 27/41 (2013.01); B64C 27/473 (2013.01); B64C 27/51 (2013.01); B64C 27/52 (2013.01); B64C 27/54 (2013.01); B64C 2027/4736 (2013.01);
Abstract
A proprotor system for tiltrotor aircraft having a helicopter mode and an airplane mode. The proprotor system includes a hub and a plurality of proprotor blades coupled to the hub such that each proprotor blade is operable to independently flap relative to the hub and independently change pitch. In the airplane mode, the proprotor blades have a first in-plane frequency greater than 2.0/rev.