Back to results
US 8,061,041 B2Granted
Safety razor
AssigneeThe Gillette Company
InventorsPaul Michael Jessemey, Roy Nicoll, Robert Anthony Hart, Vincent P. Walker
Life of this patent
Estimating the term…
Abstract
A safety razor has a blade unit having at least one blade with a sharp cutting edge. A dielectric handle is configured to carry the blade unit and a conductive ground member is disposed within the handle. The safety razor has an electrically operated device. An electrical arrangement having a sensor electrically coupled to the blade unit and the ground member senses skin contact with the blade unit and actuates the device based on the sensing.
Claims15
A safety razor comprising:
- a blade unit having at least one blade with a sharp cutting edge;
- a handle comprising an electrically nonconductive casing configured to carry the blade unit;
- a conductive ground member disposed within the handle;
- an electrically operated device;
- and
- an electronic control device that controls actuation of the electrically operated device, the electronic control device is electrically coupled to the blade unit and the ground member and configured to be touch sensitive, wherein a touch sensing path having a capacitance is formed between the blade unit and the conductive ground member, wherein the electronic control device is configured to measure a cycle time for charging the capacitance to an upper voltage and discharging the capacitance to a lower voltage and to actuate the electrically operated device when the-blade unit makes contact with a user's skin and the cycle time exceeds a threshold value.
3 more elements
Dependencies are inferred from the claim text.