Shaving apparatus with electrically adjustable cutting unit
US5687481A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/388
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A shaving apparatus (1, 105) with at least one adjustable cutting unit (11, 121) which comprises an external cutting member (13, 123) with at least one hair trap opening (17) and an internal cutting member (19, 125) which is rotatable inside the external cutting member (13, 123) by means of an electric motor (23, 127). The cutting unit (11, 121) is adjustable by means of an electrical actuator (91, 179) which is controllable by an electrical control unit (103, 191). In a first embodiment of the shaving apparatus (1), the external cutting member (13, 123) can be positioned relative to a holder (17) during a shaving operation by means of the actuator (91). In a second embodiment of the shaving apparatus (105), the external cutting member (123) is displaceable relative to the holder (111) under the influence of a skin contact force against a pretensioning force which has a value which is adjustable by means of the actuator (179). In both embodiments, the motor (23, 127) has a speed which is controlled by the control unit (103, 191). The control unit (103, 191) adjusts the cutting unit (11, 121) and the motor speed (23, 127) as a function of a measured skin contact force, a measured cu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.