Vibration dry shaving apparatus driven by a bipolar uniphase synchronous motor
US4628607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Apr 30, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/525
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A vibratory dry-shaving apparatus comprises a housing; a bipolar, uniphase, synchronous motor positioned within the housing and having a rotor and a stator; and a shaving head arranged on the housing and including a vibratory cutter part below a fixed cutter part. A wall separates the interior of the housing from the shaving head, such wall having a passage therethrough. A swing lever is driven by the rotor and engages the vibratory cutter part to drive the latter, the swing lever extending through the passage. An elastic sleeve surrounds the swing lever and seals the passage between the edge thereof and the swing lever. The elastic sleeve is asymmetrically designed so that, in a final end position of the vibratory cutter part where the magnetic fields of the rotor and the stator are parallel, no force resulting from deformation of the sleeve is exerted on the vibratory cutter part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.