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:
Jun. 28, 1977
Filed:
Dec. 15, 1975
Applicant:
Inventors:
Yoshihisa Iida, Kyoto, JA;
Yozo Oike, Osaka, JA;
Assignee:
Shinpo Kogyo Kabushiki Kaisha, Kyoto, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ; F16H / ;
U.S. Cl.
CPC ...
74804 ; 74413 ;
Abstract
A speed reduction gear of the differential type comprises a stationary internal gear with teeth of circular convex profile and an external gear with teeth of circular concave profile, the meshing between the profiles occurring preferably in a 'concave to convex' state and in which the meshing point moves reciprocally on the concave profile of the teeth of the external gear. In this speed reduction gear, noise is decreased in a large amount by supporting the teeth of the internal gear at their ends relieving intermediate portions of them.