Method of making a toothbrush
US6322152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2001 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | May 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S15/05
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a toothbrush that provides good subgingival access while being gentle and non-irritating to the oral soft tissue. The toothbrush of the invention comprises a brush head and a handle. The brush head comprises tufts of bristles generally parallel to each other and arranged in rows. The rows of bristles comprise outer rows adjacent the periphery of the brush head and at least one inner row between the outer rows. The inner bristles are preferably polished on their free ends and the outer bristles are feathered. The outer bristles are preferably polished prior to being feathered. The inner bristles are preferably shorter than the outer bristles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.