Hair cutting apparatus
US7954243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Hair cutting apparatus having at least one cutting unit (2) with a stationary cutting member (3) and reciprocable movable cutting member (4) each having cooperating bearing surfaces (7,8) with cutting edges (9,10). To minimize the friction between the bearing surfaces a visco-elastic element is provided between the coupling element (14) and the movable cutting member (4) resulting in a small cutting gap between the bearing surfaces. During cutting of hairs the visco-elastic element behaves as a stiff element whereas during periods in which no hairs are cut the element behaves relatively soft so that the cutting gaps between the cutting edges are closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.