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:
Nov. 03, 2020
Filed:
Jan. 30, 2017
Applicant:
Sikorsky Aircraft Corporation, Stratford, CT (US);
Inventors:
Edward H. Bittner, Madison, CT (US);
Bruce D. Hansen, Shelton, CT (US);
Christopher John Mussel, Oxford, CT (US);
Assignee:
Sikorsky Aircraft Corporation, Stratford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23F 7/00 (2006.01); B23H 5/08 (2006.01); F16H 1/08 (2006.01); B23H 9/00 (2006.01); F16H 55/08 (2006.01);
U.S. Cl.
CPC ...
B23F 7/00 (2013.01); B23H 5/08 (2013.01); B23H 9/003 (2013.01); F16H 1/08 (2013.01); F16H 55/08 (2013.01);
Abstract
A herringbone gear includes a cylindrical body having a circumferential face having a width. A first helical gear tooth on the circumferential face has a first configuration, a second helical gear tooth on the circumferential face has a second configuration, and a transition on the circumferential face extends between the first helical gear tooth and the second helical gear tooth. An involute form taken within a transverse plane of the circumferential face remains constant over the width.