Electric toothbrushes
US4989287A · kind A · utility
115Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Aug 18, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/3436
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electric toothbrush has a reciprocating connecting rod in a brush member. The brush member is constructed as a brush head at its front end and has there two rows of rotatable bristle holders which each engage with a cam in a transversely running groove in the connecting rod. Rectilinear movement of the connecting rod leads to an alternating rotating movement of the bristle holders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.