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:
Jan. 03, 2023
Filed:
Apr. 07, 2020
Applicant:
Ft Holdings Inc., Calgary, CA;
Inventor:
Daniel John Clarke, Calgary, CA;
Assignee:
FT HOLDINGS INC., Calgary, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/32 (2006.01); B64C 27/48 (2006.01); B64C 27/14 (2006.01); B64C 27/10 (2006.01);
U.S. Cl.
CPC ...
B64C 27/32 (2013.01); B64C 27/10 (2013.01); B64C 27/14 (2013.01); B64C 27/48 (2013.01);
Abstract
A negative hinge offset rotor head for a coaxial helicopter, the rotor head having two or more flapping rotor blades having outer and inner tips, the inner tips rotatably attached to a hinge attachment rotated by a driveshaft where the driveshaft is positioned between the rotor blades and the rotor blades' respective hinge attachment.