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:
Oct. 27, 2020
Filed:
May. 25, 2016
Applicant:
Dotterel Technologies Limited, Auckland, NZ;
Inventors:
Samuel Seamus Rowe, Auckland, NZ;
Shuan Taggart Pentecost, Taipuha, NZ;
Assignee:
DOTTEREL TECHNOLOGIES LIMITED, Auckland, NZ;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64C 27/20 (2006.01); B64C 39/02 (2006.01); B64C 27/08 (2006.01);
U.S. Cl.
CPC ...
B64C 27/20 (2013.01); B64C 39/024 (2013.01); B64C 27/08 (2013.01); B64C 2201/027 (2013.01); B64C 2201/108 (2013.01); B64C 2220/00 (2013.01);
Abstract
A shroud for an aircraft having a noise reducing material on or in an inner surface of the shroud adjacent to one or more tips of the propeller. The noise reducing material is preferably an electrospun nanomaterial, particularly a ridged composite acoustic nanofibre. The interior surface of the shroud may be provided with a plurality of sound deflectors configured to dissipate sound by reflection and refraction, and absorb sound into the shroud body. The sound deflectors may be ribs or arrangements of discrete reflector elements.