Abstract: A blade set assembly for a hair cutting appliance includes a stationary blade and a movable blade. The movable and stationary blades are arranged one on top the other and movable relative to each other. A guide unit is formed between the movable blade and the stationary blade, where the blades engage each other. The guide unit includes longitudinally spaced, laterally extending guideways, each defined between a stationary blade guide surface and a movable blade guide surface that overlap each other. Rolling elements are arranged at the guideways between the guide surfaces. The guide surfaces have a height extension greater than a radius of the rolling elements such that the guide surfaces overlap in a vertical direction. The guide surfaces provide for coupling in a longitudinal direction between the blades such that the guide unit provides for a set longitudinal distance for any force applied in the longitudinal direction.

Abstract: The present disclosure relates to a blade set assembly (116) for a hair cutting appliance comprises a stationary blade (134) having a leading edge (148) and a movable blade (152) having a leading edge (158). The movable blade and the stationary blade are arranged on top of one another and operable to be moved with respect to one another in a lateral direction (Y). A guide unit (166) is formed between the movable blade and the stationary blade, the blades engaging one another at the guide unit, arranged to set a longitudinal distance (d) between the stationary blade leading edge and the movable blade leading edge and to define a movement path for the relative movement between the blades in the lateral direction. The guide unit comprises at least two longitudinally spaced, laterally extending guideways (168, 170), each defined between a stationary blade guide surface (172) and a movable blade guide surface (174) that overlap one another.

Abstract: An adjustment drive for an adjustable spacing comb for a hair cutting appliance that may be fitted with an adjustable spacing comb. The adjustment drive comprises an actuator for actuating a movable comb portion of the adjustable spacing comb with respect to a blade set of the hair cutting appliance, a manually operable rotation element, and a rotary encoder, that is configured to detect rotary movement of the rotation element and to output a respective user input signal, wherein the actuator is operated in response to the user input signal.

Abstract: The present disclosure relates to an adjustment drive (50) for an adjustable spacing comb (26) for a hair cutting appliance (10) and to a hair cutting appliance (10) that is fitted with an adjustable spacing comb (26). The present disclosure further relates to a method for operating an adjustable spacing comb (26) for a hair cutting appliance (10). The adjustment drive (50) comprises an actuator (52) for actuating a movable comb portion (40) of the adjustable spacing comb (26) with respect to a blade set (16) of the hair cutting appliance (10), a manually operable rotation element (64), particularly a manually rotatable rotation element (64) and an encoder (70) particularly a rotary encoder (70), that is configured to detect rotary movement of the rotation element (64) and to output a respective user input signal, wherein the actuator (52) is operated on the basis of the user input signal.