The Gillette Company

Braun Gmbh

Naturin Gmbh & Co.

Timo Schmitt

Klaus Heubach

Norbert Broemse

Felix Koenig

Maurice Schirmer

Matthew James Hodgson

Juergen Behrendt

Benjamin Heinrich Niestroj

Torsten Klemm

Franz Maser

Ferdinand Hermann

Holger Becker

Lothar Just

The present invention relates to the field of a small electrical appliance, in particular hair removal device or toothbrush, comprising an electric DC motor; a detector for acquiring a detector signal indicative of a rotational speed of the electric DC motor; and a controller for controlling the electric DC motor. The controller is adapted to: determine, based on the detector signal, a first parameter indicative of the rotational speed of the DC motor; determine, based on the detector signal, a second parameter indicative of the rotational speed of the DC motor, wherein the second parameter is different from the first parameter, and wherein the second parameter is determined based on a frequency domain analysis of the detector signal; and adjust a supply voltage of the electric DC motor based on the first parameter and the second parameter.

Small electrical appliance with improved motor speed control

A personal consumer product having an energy emitting element in selective electrical communication with a power source is provided. Thermal control circuitry is used to isolate the energy emitting element from the power source when a temperature of the energy emitting element exceeds a threshold. The thermal control circuitry includes a primary thermal control circuit and a redundant thermal control circuit. Methods for controlling the temperature of an energy emitting element of a personal consumer product are also provided.

Personal consumer product with thermal control circuitry

Personal consumer product with thermal control circuitry and methods thereof

A personal consumer product having an energy emitting element in selective electrical communication with a power source is provided. Thermal control circuitry is used to isolate the energy emitting element from the power source when a temperature of the energy emitting element exceeds a threshold. A diagnostics routine is used to test the functionality of the hardware and software of the personal consumer product.

Personal consumer product with thermal control circuitry diagnostics and methods thereof

A shaving razor cartridge with a housing having a guard, a cap, and one or more blades located between the guard and the cap. The guard is positioned in front of the one or more blades and the cap is positioned behind the one or more blades. A heat delivering element is mounted to the housing for transferring heat during a shaving stroke. The heat delivering element includes a skin contacting surface and an opposing bottom surface defined by a perimeter wall. An insulating member is positioned within the perimeter wall. The insulating member has a first surface facing the bottom surface of the heat delivering element and a second surface.

Heated shaving razors

A method of controlling transfer of heat to skin during a shaving stroke. A shaving razor system with a heating element is provided. An insulating member for delivering heat to the heating element is provided. A temperature of a first area of the heating element is measured with a first thermal sensor. A temperature of a second area of the heating element is measured with a second thermal sensor. Power to the insulating member is decreased when an average temperature sensed by the thermal sensors is greater than or equal to a first predetermined temperature. Power to the insulating member is decreased when an individual temperature sensed by either of the thermal sensors is greater than or equal to a second predetermined temperature.

Shaving cartridges having thermal sensors

A shaving razor cartridge with a housing having a guard, a cap, and one or more blades located between the guard and the cap. The guard is positioned in front of the one or more blades and the cap is positioned behind said one or more blades. A heat delivering element is mounted to the housing for transferring heat during a shaving stroke. The heat delivering element includes a skin contacting surface and an opposing bottom surface defined by a perimeter wall. An insulating member is positioned within the perimeter wall. The insulating member has a first surface facing the bottom surface of the heat delivering element and a second surface.

A shaving razor system with a heating element for transferring heat during a shaving stroke. The heating element has a skin contacting surface. An insulating member for delivering heat to the heating element has a plurality of spaced apart thermal sensors are mounted to the insulating member and positioned below the skin contacting surface. An electrical circuit is configured to deliver energy to the insulating member. The electrical circuit has a control circuit for temperature regulation. A power source is in communication with the electrical circuit. The thermal sensors measure the temperature of the heating element and are in communication with the control circuit.

Growing community of inventors

Hintertiefenbach, Germany

Timo Schmitt