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:
Dec. 06, 2016
Filed:
Dec. 03, 2012
Honda Motor Co., Ltd., Minato-Ku, Tokyo, JP;
Yosuke Tanaka, Wako, JP;
Yasuo Shimizu, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A worm gear mechanism () comprises a worm () and a worm wheel () meshed with the worm. In the teeth of a hob () used for the gear cutting of the worm wheel, at least the addendum surfaces () are formed into arcuate shapes. The radial centers () of the arcs of the addendum surfaces are positioned nearer to a center line (WL') of the hob than a pitch line () of the hob. The worm wheel is cut into a gear by the hob. The worm is formed into the same shape as the hob. The recess meshing length (L) of the worm gear mechanism is designed to be greater than the recess meshing length (Llim) of a conventional worm gear mechanism.