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. 02, 2026
Filed:
Oct. 28, 2022
Mabuchi Motor Co., Ltd., Chiba, JP;
Masakazu Suwa, Chiba, JP;
MABUCHI MOTOR CO., LTD., Chiba, JP;
Abstract
A helical gear of the disclosure includes: a helical toothing portion of which helical tooth traces are formed on an outer tubular surface of a cylindrical rim; and a lightening portion formed in such a manner that an area of which distance to a shaft center on one end surface of the rim in an axial direction is equal to or less than a predetermined value is recessed toward the other end surface. Assuming that a ratio of a value obtained by subtracting a lightening thickness of the lightening portion from a thickness of the rim to a tooth thickness of the helical toothing portion is defined as a first ratio, and a ratio of a recess dimension to a total length dimension of the rim in the axial direction is defined as a second ratio, relationships between the first ratio and two ends of a range of the second ratio are P=12.628m−25.78 and P=9.8605n−88.24 where P: the first ratio [%], m: one end [%], and n: the other end [%].
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile