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:
Sep. 02, 2025
Filed:
Apr. 26, 2022
Shanghai Shift Electrics Co., Ltd., Shanghai, CN;
Zhenwu Xu, Shanghai, CN;
Xiaoguo Dai, Shanghai, CN;
SHANGHAI SHIFT ELECTRONICS CO., LTD., Shanghai, CN;
Abstract
A toothbrush includes a brush head linkage (), a connecting mechanism () and a toothbrush handle (); the connecting mechanism () includes a first connector (), a second connector () and an elastic structural element () connected to the second connector (); the first connector () is rotatably connected to the second connector (), and the axis of rotation extends in a front-rear direction; and the elastic structural element () includes at least one return torsion spring (), the return torsion spring () includes a helix spring () in the form of a cylinder with an opening of the cylinder oriented in a direction parallel to an extension direction of an oscillating reference line, the helix spring is in stop fit with the second connector () in a direction perpendicular to the oscillating reference line, and the return torsion spring further includes a first torsion bar () and a second torsion bar () respectively connected to a front end and a rear end of the helix spring (). The toothbrush according to the present disclosure can protect teeth.