Toothbrush having needle-shaped bristles with various end points and manufacturing method thereof
US8172337B2 · kind B2 · utility
11Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jul 5, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1066
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A toothbrush having needle-shaped bristles with various end points and a method of manufacturing the same. The needle-shaped toothbrush bristle, folded in an asymmetric U-shape to outwardly expose both ends thereof at a height difference ranging from 0.5 to 2 mm and disposed on a head portion of the toothbrush, has a tapered length of 3-7 mm and a blunt end point with a diameter of 0.01-0.07 mm. The toothbrush is advantageous in terms of high insertion function into the periodontal pockets of the user while leaving the user with a refreshed feeling after brushing his/her teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.