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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.:

US 12398794 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Apr. 14, 2023

Harmonic gear device and actuator

Applicants:

Midea Group Co., Ltd., Foshan, CN;

Guangdong Jiya Precision Machinery Technology Co., Ltd., Foshan, CN;

Gd Midea Air-conditioning Equipment Co,. Ltd., Foshan, CN;

Guangdong Midea Electric Co., Ltd., Foshan, CN;

Inventors:

Gang Wang, Foshan, CN;

Wenjie Lin, Foshan, CN;

Kiyoji Minegishi, Foshan, CN;

Tsuyoshi Isaji, Foshan, CN;

Ziming Guo, Foshan, CN;

Assignees:

Midea Group Co., Ltd., Foshan, CN;

Guangdong Jiya Precision Machinery Technology Co., Ltd., Foshan, CN;

GD Midea Air-Conditioning Equipment Co, . Ltd., Foshan, CN;

Guangdong Midea Electric Co., Ltd., Foshan, CN;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Adam D Rogers

Int. Cl.
CPC ...
F16H 49/00 (2006.01); F16H 55/08 (2006.01);
U.S. Cl.
CPC ...
F16H 49/001 (2013.01); F16H 2049/003 (2013.01); F16H 55/0833 (2013.01);
Abstract

A harmonic gear device includes a rigid internal gear, a flexible external gear and a wave generator. The rigid internal gear is an annular component having internal teeth. The flexible external gear is an annular component, which has external teeth and is configured on an inner side of the rigid internal gear. The wave generator is configured on an inner side of the flexible external gear, and deflects the flexible external gear. The harmonic gear device deforms the flexible external gear along with the rotation of the wave generator taking a rotation axis as the center, such that some of the external teeth mesh with some of the internal teeth. The flexible external gear rotates relative to the rigid internal gear in accordance with the difference between the numbers of teeth of the flexible external gear and the rigid internal gear.

Find Patent Forward Citations

Wang, Gang. (2025). Harmonic gear device and actuator (U.S. Patent No. 12398794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12398794

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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