Toothbrush having a brush holder movable against spring force
US5901397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C2204/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a toothbrush (1) comprising a stationary part (10) and a brush holder (24) which is movable with respect to the stationary part (10), and comprising a spring (48) which acts between the stationary part (10) and the brush holder (24), a link-motion device (49) is arranged between the stationary part (10) and the brush holder (24), in addition to the spring (48), in order to obtain a desired force characteristic, which link-motion device (49) is loaded by the spring (48) and comprises a link-motion follower (51) and a link-motion surface (50) having two link-motion surface portions (52, 53), the two link-motion surface portions (52, 53) adjoining one another by an edge-like transition portion (54).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.