Title:
TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2023/127193
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a toothbrush in which brush portions have flexibility and restoration properties. The present invention has a head portion, and a plurality of brush portions protruding frontward from a support surface positioned on the thickness-direction front surface of the head portion. A center line on a proximal-end side of the brush sections, among center lines passing through the center of a cross-section of the brush sections, has a curved section that curves with a radius of curvature in accordance with distance from the support surface toward the front-surface side.
Inventors:
NISHINO MASATSUGU (JP)
TAKASHITA NORIHIRO (JP)
HORIKOSHI RYO (JP)
TAKASHITA NORIHIRO (JP)
HORIKOSHI RYO (JP)
Application Number:
PCT/JP2022/031069
Publication Date:
July 06, 2023
Filing Date:
August 17, 2022
Export Citation:
Assignee:
LION CORP (JP)
International Classes:
A46B9/04; A46D1/04
Foreign References:
| JPH03289906A | 1991-12-19 | |||
| JP2003245134A | 2003-09-02 | |||
| JPS60109432U | 1985-07-25 | |||
| JP2021137561A | 2021-09-16 |
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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