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:
Jan. 24, 2023
Filed:
Feb. 11, 2020
Sumec Hardware & Tools Co., Ltd., Nanjing, CN;
Guo-Hui Yuan, Nanjing, CN;
Jian-Hui Wang, Nanjing, CN;
Kai Liu, Nanjing, CN;
Lin-Miao Chen, Nanjing, CN;
SUMEC HARDWARE & TOOLS CO., LTD., Nanjing, CN;
Abstract
A dual handle speed adjustment device includes left and right handles, a link and a slider. The left and right handles each have an actuating end, an operating end and a handle hinge as a pivot axis. The slider has a first connection end connected to the actuating ends of the left and right handles, a second connection end connected to a speed control device, and a part between the first and second connection ends hinged to one end of the link, which has the other end thereof provided with a link rotation axis. The left and right handles independently drive the slider to move when they are turned. The invention can realize the separate operation of two speed adjusting handles.