Power toothbrush
US5359747A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Aug 23, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/26
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A power toothbrush has a superior brushing effect achieved by a brush member which is given a reciprocal motion in the axial direction while at the same time the brush member itself is given a rotary motion and which has a simple construction and is of low cost. A drive shaft is mounted in a casing in such a way that it is free to move in the axial direction. The rotation of a drive motor mounted inside the casing is converted into a reciprocating motion and transmitted to the drive shaft by a first transmission mechanism. A rotary brush member is rotatably mounted on the end of an attachment connected to the drive shaft, and the reciprocating motion, in the axial direction, of the attachment is converted into a rotary motion and transmitted to the rotary brush member by a second transmission mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.