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:
Aug. 24, 2021
Filed:
Jul. 23, 2018
Applicant:
Dotterel Technologies Limited, Auckland, NZ;
Inventors:
Assignee:
Dotterel Technologies Limited, Auckland, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C 1/40 (2006.01); B32B 27/06 (2006.01); B32B 27/12 (2006.01); B32B 27/18 (2006.01); B64C 11/00 (2006.01); B64C 39/02 (2006.01);
U.S. Cl.
CPC ...
B64C 1/40 (2013.01); B32B 27/065 (2013.01); B32B 27/12 (2013.01); B32B 27/18 (2013.01); B64C 11/001 (2013.01); B64C 39/024 (2013.01); B32B 2307/102 (2013.01); B32B 2603/00 (2013.01); B64C 2201/162 (2013.01);
Abstract
A shroud for an aircraft configured to at least partially surround a noise source including a propeller. The shroud includes an outer layer and two or more sound absorbing materials located inside the shroud. The outer layer is configured to transmit noise from the noise source into the inside of the shroud and/or includes a recess located and sized to partially surround at least a part of a tip of at least one blade.