Driven rotary toothbrush
US4313237A · kind A · utility
Inventor
Key dates
| Filing date | Mar 18, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Mar 18, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved driven rotary toothbrush has an electric motor enclosed in a handle and driving a plurality of rotary brushes for simultaneously cleaning multiple tooth surfaces. The rotary brushes are mounted in a brush head adapted to be releasably supported on one end of an elongated brush head support stem having flexible drive shafts extending therealong and having its other end adapted to be releasably mounted on the handle to provide rotary driven connection between the motor and brushes. The releasable mounting of the brush head and of the support stem enables hygenic use of the same motor and handle by a plurality of persons through use of personalized snap-on brush heads and support stems, and also makes possible the easy and economical replacement of the brush heads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.