One or more embodiments of a hair cutting device which includes a hair cutting blade and a controller. The hair cutting blade includes a plurality of component blades configured to cut by moving in a first direction. A first component blade of the plurality of component blades is arranged to move independently from another component blade of the plurality of component blades in a second direction which is not parallel to the first direction. The controller is configured to control the hair cutting blade including movement of the first component blade of the plurality of component blades in the second direction.

Sensor-based shaving systems and methods of analyzing a user's shave event are described for determining a unique threshold value of the user. A grooming device comprises a handle having a connecting structure connected to a hair cutting implement. A shave event sensor associated with the grooming device measures a user behavior, which includes collecting a first dataset comprising shave data defining a shave event. The first dataset is transmitted via a communication device and is analyzed to determine baseline behavior data of the user, and a unique threshold value of the user is determined from the baseline behavior data. One or more subsequent datasets, each comprising shave data of one or more corresponding shave events, is compared to the unique threshold value to determine comparison data. An indication is provided, based on the comparison data, to indicate a deviation from the threshold value and to influence the user behavior.

A grooming device. The grooming device includes a handle having proximal and distal ends, an implement connecting structure, grooming implement, displacement sensor, and power source providing power to the displacement sensor. The implement connecting structure is pivotably connected to the proximal end of the handle about a first handle axis and has a connection element and an eject element that is moveable within the implement connecting structure along a second handle axis. The implement connecting structure also has a location element pivotably connected to the eject element such that as the implement connecting structure moves about the first handle axis the location element remains stationary relative to the handle and as the eject element moves along the second handle axis the location element is displaced relative to the handle and the displacement sensor detects displacement of the location element. The grooming implement is connected to the implement connecting structure.

A grooming device. The grooming device includes a handle having a housing portion with proximal and distal ends. A displacement sensor is positioned within the handle. A power source is positioned within the handle and provides power to the displacement sensor. A neck portion of the handle has proximal and distal ends and the distal end of the neck portion is connected to the proximal end of the housing portion. An implement connecting structure is positioned at the proximal end of the neck portion and includes a connection element. An eject element is moveable within the handle, and a location element is connected to the eject element. A grooming implement is connected to the connection element. As the eject element moves to eject the grooming implement from the connection element the displacement sensor detects displacement of the location element.

A grooming device. The grooming device includes a handle having a neck portion, a displacement sensor positioned within the neck portion, a housing portion, a coupling mechanism securing the neck portion and the housing portion to one another, and a power source positioned within the handle. The neck portion includes a proximal end and a distal end. The proximal end of the neck portion having an implement connecting structure. The housing portion includes a proximal end, a distal end, and a location element. The proximal end of the housing portion is pivotably connected to the distal end of the neck portion about a handle pivot axis. As the neck portion pivots about the handle pivot axis relative to the housing portion, the displacement sensor detects displacement of the location element. A grooming implement is connected to the implement connecting structure.

A hair trimming device arranged to detect positions of the hair trimming device in relation to a client's head and to adjust its trimming length automatically and dynamically according to preprogrammed values at any given point during a hair trimming session.

A system for treating a part of a body to be treated includes a hand-held treating device and a position identifier configured to generate information indicative of the position of the treating device relative to the part of the body to be treated. A controller is configured to determine a path and/or angle of orientation of the treating device relative to the part of the body to be treated in dependence of the information generated by the position identifier. The controller is also configured to operate a feedback module to provide feedback to a user based on the path and/or angle of orientation of the treating device determined by the controller.

System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.

An intelligent hair clipper training system includes a housing having hair associated therewith, an electric hair clipper for cutting the hair on the housing, at least one comb associated with the hair clipper, a sensor array for detecting a position of the electric hair clipper relative to the housing, an indicator arrangement for indicating different zones of hair on the housing, and a control arrangement configured to interpret positional data provided by the sensor array and cause the indicator arrangement to illuminate one or more of the zones of hair on the housing.

According to an aspect, there is provided a computer-implemented method (300; FIG. 3) for interacting with a user of a personal care device (FIG. 1; 102). The method (300; FIG. 3) comprises receiving (302, FIG. 3) device usage data indicative of a manner in which the personal care device is used by the user during a usage instance of the personal care device, the device usage data relating to one or more of a defined set of device usage parameters; receiving (304) performance data indicative of an outcome of the usage instance, the performance data relating to one or more of a defined set of performance parameters; and responsive to a determination that one or more of the received device usage data and the received performance data differ from stored reference device usage data and stored reference performance data, respectively, by more than a defined threshold amount, generating (306) a user input request to be presented to the user. An apparatus, a system and a computer program product are also provided.