In some embodiments, usage of a personal care device in compliance with a recommended use is improved. A usage monitor computing device may detect and store records of use of the personal care device. The usage monitor computing device may transmit the records of use to a monitoring server device via a network. The usage monitor computing device may determine whether the records of use indicate that the personal care device has been used as directed by the recommendations, and if so, may determine whether one or more rewards for use should be provided to the user. The usage monitor computing device may receive notifications of the rewards, and may present notifications of the rewards to the user.

A personal care device that is capable of two-way communication is provided. In some embodiments, the personal care device operates in a first mode and a second mode depending on whether a signal has been received from a networked computing device, thus allowing a single human-machine interface (HMI) device to both control the personal care device and to cause signals to be sent to the networked computing device. In some embodiments, the personal care device is configured to present media streamed from the networked computing device, and/or to stream audio detected by the personal care device to the networked computing device.

A side brush for a robotic cleaner. The side brush is rotatable about a rotation axis in a rotational direction and has a brush body and numerous linear bristles including a first bristle having a base end at the brush body and an opposite distal end. An imaginary line extends perpendicularly to the rotation axis. The first bristle extends in a bristle direction outwardly from the brush body. Seen in a top view, the bristle direction extends at a first angle to the imaginary line with the distal end pointing rearwardly in relation to the rotational direction. Seen in a side view, the bristle direction extends at a second acute angle to the rotation axis pointing away from the brush body. A robotic cleaner having such a side brush is also disclosed herein.

A cleaning element carrier for a toothbrush in a form of a disk has a back surface including a central depression covering at least 70% of the back surface and forming an edge at the border. The carrier's front surface includes at least one protrusion so that the front surface comprises two levels, wherein the area covered by the depression is larger than the area covered by the protrusion.

Systems and methods for measuring and indicating brush head life are disclosed. In one embodiment, the system includes a brush head that moves with respect to a brush handle; an energy harvester that generates electrical signals based on movements of the brush head; a controller in electrical communication with the energy harvester; and an indicator in electrical communication with the controller. The indicator is energized based on a signal from the controller.

A rotary cleaning apparatus for underwater cleaning including a housing, a battery, a motor and a flexible hub system. The flexible hub system includes a toroidal brush system coupled to a circular centrifugal pump assembly. The flexible hub system includes a flexible hub allowing the flexible hub system to bend out of plane. When the flexible hub system is rotated underwater at a curved surface, the brush system cleans the surface while the suction of the centrifugal pump assembly flexes the flexible hub system to evenly contact the surface.

The present invention relates to an improved brush, in particular a brush for facial care, with several carriers including cleaning elements and each connected to a shaft, and a casing that pivotably mounts said carriers and that supports a common drive shaft for said carriers and which is drive-coupled to said shafts.

An electric toothbrush having bristle driven pulsation includes a brush head having a bristle holder and bristle tufts attached to the bristle holder. The bristle tufts and corresponding bristles are disposed at a perpendicular and/or a non-perpendicular angle with respect to a mounting surface of the brush head. The electric toothbrush also includes an electric toothbrush handle removably attached to the brush head. The electric toothbrush handle includes a linear motor configured to drive the bristle holder via a gearing structure coupled to the linear motor and the bristle holder. The linear motor causes the bristle holder to rotate clockwise and counterclockwise at a rotation frequency which exceeds a rotation frequency threshold (e.g., 100 Hz, 120 Hz, etc.). The linear motor also causes the brush head to vibrate in a direction toward and away from a contact surface in synchronization with the rotation of the bristles.

An electric toothbrush having bristle driven pulsation includes a brush head having a bristle holder and bristle tufts attached to the bristle holder. The bristle tufts and corresponding bristles are disposed at a perpendicular and/or a non-perpendicular angle with respect to a mounting surface of the brush head. The electric toothbrush also includes an electric toothbrush handle removably attached to the brush head. The electric toothbrush handle includes a linear motor configured to drive the bristle holder via a gearing structure coupled to the linear motor and the bristle holder. The linear motor causes the bristle holder to rotate clockwise and counterclockwise at a rotation frequency which exceeds a rotation frequency threshold (e.g., 100 Hz, 120 Hz, etc.). The linear motor also causes the brush head to vibrate in a direction toward and away from a contact surface in synchronization with the rotation of the bristles.

Skin brush heads configured for use with a motorized personal appliance include a body having an inner surface and an outer surface, and a treatment applicator coupled to the outer surface of the body. The treatment applicator includes a plurality of cleansing agent-infused bristles extending away from the outer surface of the body, the plurality of cleansing agent-infused bristles being configured to remove particles from a skin portion by adsorption.