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:
Apr. 10, 2018
Filed:
Jun. 01, 2015
Applicant:
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Inventors:
Barnaby S. Wainfan, Long Beach, CA (US);
Stephen D. Johnson, Laguna Niguel, CA (US);
Assignee:
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/50 (2006.01); F03D 1/06 (2006.01); B64C 11/28 (2006.01); B64C 11/04 (2006.01); B64C 27/46 (2006.01); B64C 27/473 (2006.01);
U.S. Cl.
CPC ...
B64C 11/28 (2013.01); B64C 11/04 (2013.01); B64C 27/46 (2013.01); B64C 27/50 (2013.01); B64C 2027/4736 (2013.01);
Abstract
A propeller which can be folded and stowed in compact form and then deployed for powered flight is disclosed. The deployable propeller has two or more blades, and each blade is composed of multiple segments which are disengaged when stowed and then interlock when deployed to form an efficient blade. The segmented deployable propeller retains all effective area to the spinner radius.