A system for classifying the usage of a handheld consumer device having a sensor and an analyzer. The sensor determines usage data at successive time instants and provides a temporally successive sequence of usage data during a usage session. The analyzer classifies the usage of the device with respect to at least one set usage classes and assembles a temporally successive sequence of input tuples of usage data relating to a predetermined time period of the usage session, each of the input tuples having at least one element representing the usage data at the respective time instant and for inputting the sequence of input tuples into at least one artificial neural network arranged to output at least one output tuple comprising a number of elements in accordance with the number of usage classes, each element of the output tuple representing a prediction value that the usage of the consumer device at the given time instant relates to a respective usage class.

A manual toothbrush, having a front side and a back side, includes a disposable head comprising a head material and a reusable handle comprising a handle material that is different from the head material. The head is to be repeatedly attached to and detached from the handle by being moved relative to the handle in a direction substantially parallel to a longitudinal axis. The head includes a head material having a head-material density, and the handle includes a handle material having a handle-material density, wherein the handle-material density is greater than the head-material density. The toothbrush is structured and configured so that when the toothbrush is placed on its back side on a substantially planar surface, the toothbrush remains on its back side in a balanced positionand when the toothbrush is thereafter moved out of said balanced position, the toothbrush automatically returns to the balanced position.

A toothbrush includes a main body that includes a head portion with a bristle raising surface on which bristles are provided in a standing manner, a grip portion, and a neck portion. A light emission portion that emits light through a specific region of the bristle raising surface toward a tooth surface and a light reception portion that receives radiated light from the tooth surface resulting from the light, through the specific region, are provided inside of the main body. It is determined whether or not there is dental plaque on the tooth surface based on the output of the light reception portion. A light reception and condensing portion that condenses the radiated light from the tooth surface toward the light reception surface of the light reception portion is arranged in the housing portion forming the specific region.

A toothbrush can include a handle and a head. At least one bristle can be attached to the head. The toothbrush can also have an illumination member, an illumination circuit and an activation device. A pliant base on the handle can be used to activate the activation device to initiate the illumination circuit.

A hair condition-determining device can have a device body having at least one first region and one second region, wherein the first region and the second region are designed in such a way that the hair of the user can be moved between the first region and the second region, at least one optional light source arranged in or on the device body for illuminating the hair of the user, at least one optical sensor arranged in or on the device body for sensing light that has been emitted by the light source and has interacted with the hair and/or ambient light that has interacted with the hair, and an electronic circuit device arranged in or on the device body, wherein the electronic circuit device is coupled to the optical sensor in order to receive the detected light.

A computer-implemented method for generating feedback for a user performing haircare includes receiving a sequence of images of a head of the user and a haircare implement, the haircare implement being a hairstyling implement. The computer-implemented method also includes determining one or more implement motion parameters by tracking a position or an orientation of the haircare implement using the sequence of images. The computer-implemented method also includes determining a detangling event if one or more of: linear velocity, angular velocity, linear acceleration, and angular acceleration of the haircare implement is less than a corresponding detangling motion threshold, the detangling event being an event in which tangles from hair of the user are being removed. The computer-implemented method also includes generating feedback for providing to the user based on the determined detangling event.

A method and an apparatus for performing a localization of a movable treatment device having an inertial sensor and configured to treat a target surface. A motion pattern recognition device discriminates between two or more motion patterns contained in a set of motion patterns. An interface provides at least one inertial sensor data from the inertial sensor to the motion pattern recognition device. At least one inertial sensor data represents a movement of the movable treatment device. A neural network is configured to receive the at least one inertial sensor data and to map the at least one inertial sensor data to at least one motion pattern contained in the set of motion patterns associated with one or more different zones of the target surface so that the mapping of the at least one inertial sensor data with the at least one motion pattern indicates an estimation of the location of the device with respect to at least one zone of the target surface.

An oral care implement that delivers a fluid from a reservoir to an applicator by capillary action. The oral care implement may include a head and a handle, the head having tooth cleaning elements extending therefrom. There may also be a reservoir storing a fluid and an applicator on the head. Finally, a delivery member may extend from the reservoir to the applicator. The delivery member may include a capillary tube that draws the fluid from the reservoir to the applicator by capillary action.

A disposable hairbrush liner and a method of its use are disclosed. A disposable hairbrush liner for use with a hairbrush includes a non-woven cotton sheet and at least one substance applied to the sheet. The non-woven cotton sheet is comprised of cellulose and the substance is the extract from a natural plant.

A handheld tool includes a handle; an implement mount configured to detachably accept and to rigidly hold a user-assistive implement; an actuator assembly mounted to the handle to physically manipulate the implement mount relative to the handle; a first sensor disposed to sense an orientation of the handle; a second sensor disposed to sense an orientation of the user-assistive implement; a controller disposed in or on the handle and coupled to the actuator assembly and the first and second sensors; and memory coupled to the controller. The memory stores instructions for identifying a type of the user-assistive implement attached to the implement mount, selecting a behavior routine based upon the type of the user-assistive implement identified, and manipulating the user-assistive implement relative to the handle according to the behavior routine to aid performance of a task with the handheld tool.