Rotary shaving head for an electric shaving apparatus
US4979297A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1988 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Dec 12, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a rotary shaving head (2) for an electric shaving apparatus, the shaving head comprising a rotary cutter (23) which is driven by an electric motor (3) and which comprises a cutter disc (54) whose periphery is provided with an annular configuration of cutter blades (52) which are offset from the plane of the disc and whose cutting edges (59) co-operate along a cutting plane with a shear plate (24) formed with hair entry apertures (57). The rotary cutting (23) and the shear plate (24) are constructed for rotation of the rotary cutter (23) in both directions of rotation and the rotary cutter (23) is adapted to be driven by a single-phase synchronous motor (3, 3') having a permanent-magnet rotor (9, 65).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.