Abstract: The present invention relates to a personal care device, in particular hair removal device such as an electric shaver, comprising an elongated handle for manually moving the personal care device along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, said working head being movably supported relative to said handle and/or including a working head element being movably supported relative to a working head basis to allow adaption of the working head and/or of the working head element to the body surface contour, wherein an adjustment device is provided for adjusting a movability characteristic of a suspension of said working head and/or of said working head element, wherein said adjustment device includes at least one actuator for adjusting at least one characteristic.

Abstract: The present invention relates to a hair removal device, such as an electric shaver or epilator, comprising a hair cutting unit, a motor for driving the hair cutting unit, a measurement unit for measuring motor current and/or induced voltage and a cutting activity determinator for determining cutting activity from the half cycles of the signal of said measurement unit, wherein a wear determination unit is provided for determining wear of the hair cutting unit from the cutting activity signal of said cutting activity determinator.

Abstract: The present invention relates to a personal care device, in particular hair removal device such as an electric shaver, comprising an elongated handle for manually moving the personal care device in short and/or long strokes along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, and a determination unit including at least one sensor for determining stroke length to differentiate between short and long strokes, wherein said determination unit is configured to determine velocity of the working head and/or the handle, to determine beginning and end points of strokes when the determined velocity gets zero and/or changes signs, and to determine stroke length from the distance between pairs of beginning and end points next to each other.

Abstract: The present invention relates to a personal care device, in particular hair removal device such as an electric shaver, comprising an elongated handle for manually moving the personal care device along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, wherein an adjustment device including at least one adjustment actuator is provided for adjusting at least one treatment characteristic, wherein said adjustment actuator is configured and controlled to adjust said at least one treatment characteristic from a first setting to a second setting within a transition time period of not less than 0.1 seconds and not more than 1.5 seconds.

Abstract: An electric shaver, comprising an elongated handle for manually moving the personal care device along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, at least one detector for detecting at least one behavioral parameter indicative of a user's behavior when handling the personal care device, and an adjusting mechanism for adjusting at least one working parameter of the working head in response to the detected behavioral parameter.

Abstract: The present invention relates to a personal care device, in particular a hair removal device such as an electric shaver, comprising a working head for effecting a personal care treatment to a body surface, a handle for manually moving the working head along the body surface, and an adjustment device for adjusting a mechanical setting and/or a mechanical function of the working head and/or a part thereof, wherein a hazard determination device is provided for determining hazards for the personal care device, wherein the adjustment device is configured to adjust the working head and/or a part thereof into a safe harbor mechanical setting and/or a safe harbor mechanical function in response to a hazard signal from the hazard determination device.

Abstract: A preheating device for preheating the fuel of an internal combustion engine with a heating medium has a fuel transport device with a fuel inlet and a fuel outlet, and has a fuel transport channel connecting the fuel inlet and the fuel outlet. The preheating device also has a heating medium transport device with a heating medium inlet and a heating medium outlet, as well as a heating medium transport channel connecting the heating medium inlet and the heating medium outlet and/or at least one heating element. The fuel transport device and the heating medium transport device and/or the at least one heating element are in thermal contact with each other and thus form a heat exchanger via which a fuel transported in the fuel transport device can be heated by a heating medium transported in the heating medium transport device and/or by the at least one heating element.

Abstract: A skin treatment device such as an electric shaver, having a housing forming an elongated handle for manually moving the device along a body surface, a working head attached to the handle for effecting a treatment to the body surface, at least one detector for detecting at least one treatment parameter of the device, and a feedback indicator for indicating feedback information based on the detected treatment parameter to a user during the personal care treatment. More particularly, such feedback indicator includes a light emitter configured to emit light signals onto a mirror in front of a user.

Abstract: A device such as an electric shaver includes a working head attached to a handle for moving the working head along a skin surface, wherein at least one working tool is moveable relative to the handle under a skin contact pressure by a support structure to allow for pivoting of the working head's skin contact contour relative to the handle, wherein a biasing device is provided for biasing the working tool.

Abstract: A personal care device, in particular skin treatment device such as electric shaver, including an elongated handle for manually moving the personal care device along a body surface, a working head attached to said handle for effecting a personal care treatment to said body surface, at least one detector for detecting at least one behavioral parameter indicative of a user's behavior when handling the personal care device, and an adjusting mechanism for adjusting at least one working parameter of the working head in response to the detected behavioral parameter.

Abstract: Electrical hair removal device and method for determining the time behavior of a cyclic motor process during use of the electrical hair removal device with a motor-driven hair cutting unit by measuring the motor current. Parallel to measuring the motor current, the induced voltage of the motor is measured and a timing property of the induced voltage is evaluated, wherein the duration of a time pattern in the induced voltage is analyzed as timing property of the induced voltage. A cutting activity of the electrical hair removal device during use is determined based on the evaluated timing property of the induced voltage, and a force applied onto skin during use of the electrical hair removal device is determined based on the measured motor current and, optionally, on the determined cutting activity.

Abstract: A skin treatment device such as electric shaver, comprising a housing forming an elongated handle for manually moving the device along a body surface, a working head attached to said handle for effecting a treatment to said body surface, at least one detector for detecting at least one treatment parameter of said device, and a feedback indicator for indicating feedback information based on the detected treatment parameter to a user during the personal care treatment. More particularly, such feedback indicator includes a light emitter configured to emit light signals onto a mirror in front of a user.

Abstract: A preheating device for preheating the fuel of an internal combustion engine with a heating medium has a fuel transport device with a fuel inlet and a fuel outlet, and has a fuel transport channel connecting the fuel inlet and the fuel outlet. The preheating device also has a heating medium transport device with a heating medium inlet and a heating medium outlet, as well as a heating medium transport channel connecting the heating medium inlet and the heating medium outlet and/or at least one heating element. The fuel transport device and the heating medium transport device and/or the at least one heating element are in thermal contact with each other and thus form a heat exchanger via which a fuel transported in the fuel transport device can be heated by a heating medium transported in the heating medium transport device and/or by the at least one heating element.

Abstract: A tool for processing abrasive materials, in particular rocks, sand or ores, may include a main tool body and a hard metal plate positioned on the main tool body. A build-up weld may be applied to a surface of the hard metal plate and to the main tool body to bond the hard metal plate to the main tool body. Further, a method for producing or treating such a tool may involve positioning the hard metal plate on the main tool body and applying a build-up weld to the hard metal plate and the main tool body such that the hard metal plate is attached to the main tool body.

Abstract: The present invention is concerned with an electrically operable hair removing device, such as a shaver comprising a housing, an energy source located in the housing, at least one hair removal unit and at least one electrically operated equipment, like a light source, which is movable relative to the housing. During its use, the at least one electrically operated equipment is not directly connected to the energy source located in the housing.

Abstract: The present invention is concerned with a skin treatment device, in particular a hair removal device, having a light emission unit comprising a substrate and a plurality of first LED dies mounted on the substrate on an area of at least 0.2 cm2, in particular of at least 1 cm2, wherein the skin treatment device is arranged to activate the first LED dies to emit a treatment light pulse having a pulse length in particular in the range of between 10 ms and 300 ms and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user of at least 1 J/cm2 is achieved by application of the treatment light pulse, wherein the light emission unit has at least two selectable active areas of first LED dies, where the selectable active areas have different sizes, and at least three second LED dies are mounted on the substrate at locations suitable for visibly indicating each of the selectable active areas.

Abstract: The present invention is concerned with a hair removal device having a light emission unit having a substrate and a plurality of first LED dies that are mounted on the substrate on an area of at least 0.2 cm2, in particular of at least 1 cm2, the first LED dies having a peak emission wavelength in the far red or infrared wavelength range of between 700 nm and 980 nm, wherein the hair removal device is arranged to emit a treatment light pulse having a pulse length in the range of between 60 ms and 120 ms and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user in the range of between 3 J/cm2 and 7 J/cm2 is achieved by application of the treatment light pulse.

Abstract: The present disclosure is concerned with a skin treatment device having at least a first LED, at least a first controllable current source, in particular a first controllable constant current source, for driving the first LED, a control unit for controlled switching of at least the first controllable current source between a first state in which current is provided to the first LED and a second state in which no current is provided to the first LED, and at least a first current sensor that is connected or connectable with the first LED so that the first current sensor and the first LED form a current path at least in the second state of the first controllable current source.

Abstract: The present invention is concerned with a hair removal device for removal of red hairs that has a light emission unit having a substrate and a plurality of first LED dies emitting at a peak emission wavelength in a wavelength range of between about 480 nm and about 510 nm, the first LED dies being mounted on the substrate on an area in the range of between about 0.2 cm2 and about 100 cm2, wherein the hair removal device is arranged to emit a treatment light pulse by the first LED dies having a pulse length in the range of between about 30 ms and about 200 ms, and the first LED dies have a radiant flux such that a radiant fluence on the skin of a user in the range of between about 3 J/cm2 and about 6 J/cm2 is achieved by application of the treatment light pulse.

Abstract: The present invention relates to a method of operating and/or controlling a personal care device, in particular a hair removal device such as an electric shaver, wherein at least one user's behavior parameter characterizing the user's behavior when handling the personal care device is detected by at least one detector during the personal care treatment.