Electric hair cutting apparatus
US9346179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2012 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/3866
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric hair cutting apparatus having a motor for rotating a shaft, which, rotates an eccentric about the axis of the shaft, but not about the central axis of the eccentric, A cylindrical bearing is positioned around the eccentric. A drive tip is provided with a follower end which is shaped and positioned to engage with the bearing surrounding the eccentric. As the eccentric rotates, the bearing alternately pushes on left and right arms of the follower end of the drive tip, causing the drive tip to oscillate back and forth about a pivot point, The angle of the bearing with respect to the eccentric allows for generally continuous contact between the arms of the follower end of the drive tip with the bearing, even throughout the pivoting of the drive tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.