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:
Nov. 12, 2024
Filed:
Dec. 26, 2019
Lion Corporation, Tokyo, JP;
Ryosuke Hachisuka, Tokyo, JP;
Masashi Yanagida, Toyama, JP;
Lion Corporation, Tokyo, JP;
Abstract
A toothbrush includes a head portion () having a bristle tufting surface; a grip portion () disposed on a rear end side from the head portion; a neck portion () disposed between the bristle tufting surface () and the grip portion; and a sensing portion () for sensing that an external force in a first direction orthogonal to the bristle tufting surface exceeds a threshold value. A reversal portion () connects a first region and a second region, and snaps, buckles, and reverses as the head portion is displaced on a rear surface side due to the external force exceeding the threshold value. An elastic deformation portion () connects the first region and the second region, and elastically deforms at least up to the external force at which the reversal portion snaps, buckles, and reverses.