Toothbrush
US12402718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2022 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Aug 10, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46B2200/1066
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A toothbrush includes a brush head linkage (100), a connecting mechanism (200) and a toothbrush handle (300); the connecting mechanism (200) includes a first connector (210), a second connector (220) and an elastic structural element (230) connected to the second connector (220); the first connector (100) is rotatably connected to the second connector (220), and the axis of rotation extends in a front-rear direction; and the elastic structural element (230) includes at least one return torsion spring (231), the return torsion spring (231) includes a helix spring (2311) in the form of a cylinder with an opening of the cylinder oriented in a direction parallel to an extension direction of an oscillating reference line, the helix spring is in stop fit with the second connector (220) in a direction perpendicular to the oscillating reference line, and the return torsion spring further includes a first torsion bar (2311) and a second torsion bar (2312) respectively connected to a front end and a rear end of the helix spring (2311). The toothbrush according to the present disclosure can protect teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.