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. 28, 2018
Filed:
Nov. 19, 2013
Applicant:
Harmonic Drive Systems Inc., Shinagawa-ku, Tokyo, JP;
Inventors:
Assignee:
HARMONIC DRIVE SYSTEMS INC., Shinagawa-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 49/00 (2006.01);
U.S. Cl.
CPC ...
F16H 49/001 (2013.01); F16H 2049/003 (2013.01);
Abstract
An externally toothed gear of a strain wave gearing is made to flex into a shape conforming to an ellipsoidal curve. The externally toothed gear meshes with an internally toothed gear at the major-diameter position of the ellipsoidal curve. These two meshing positions gradually change in the circumferential direction of the both gears along the tooth trace direction. The number of external teeth of the externally toothed gear participating in meshing with the internally toothed gear can be increased. A strain wave gearing which has a high rigidity and is capable of reducing vibrational noise, can be realized.