Toothbrush having needle-shaped bristle tapered at one end and manufacturing method thereof
US7448693B2 · kind B2 · utility
12Cited by
9References
4Claims
0Family size
Inventors
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 27, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1066
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A toothbrush tufted with needle-shaped bristles. The bristles are formed of polyester resin. The bristles are 0.1 to 0.2 mm thick before tapering, 13 to 18 mm long, tapered 4 to 8 mm only on one end with a tapered tip thickness of 0.01 to 0.08 mm, and planted to be 7 to 13 mm high in the toothbrush.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.