An electric toothbrush of the present invention includes: a case having first and second drive shafts exposed therefrom, the first and second drive shafts being rotated in opposite directions and moved forward and backward respectively by a drive unit which is driven by a motor; first and second toothbrush bodies coupled to the first and second drive shafts by first and second coupling units respectively, so as to transmit the rotational force and forward and backward motions of the first and second drive shafts; a brush installed at the ends of the first and second toothbrush bodies so as to clean teeth by the rotational force and forward and backward motions transmitted to the first and second toothbrush bodies; and a third toothbrush body having an auxiliary brush, which is coupled to a third drive shaft of the drive unit installed in the case.

A drivetrain assembly (100) for a personal care device (10), the drivetrain assembly including a primary resonator (110); a secondary resonator (140) configured to reduce vibrations transmitted from the motor to a body (12) of the personal care device; a fixed point (130) positioned between the primary resonator and the secondary resonator; a first spring member (120) connected at a first end to the primary resonator and at a second end to the fixed point; a second spring member (150) connected at a first end to the secondary resonator and at a second end to the fixed point; a coupling spring (160) connected at a first end to the primary resonator and at a second end to the secondary resonator; and an actuator (170) configured to exert force on at least one of the primary resonator and the secondary resonator.

A powered toothbrush head that, in one embodiment, includes a head portion including a first movable tuft block configured for holding tooth cleaning elements. The first movable tuft block is operably connected to a motor-driven drift shaft for movement. An eccentric cam formed on the shaft drives the first movable tuft block via engagement with a slot formed in the body of the first movable tuft block. The first movable tuft block is movable in a combination oscillating motion comprising vertical motion and lateral pivoting or tilting motion upon rotation of the drive shaft. A related method for oscillating the first movable tuft block is disclosed.

A power toothbrush apparatus may include a body having a cavity and an opening leading to the cavity. An electric motor may be situated within the cavity and may include first and second biasing members; a stator casing situated between, and linearly biased by, the first and second biasing members, the stator casing may further include at least one opening and at least one electromagnet to generate a magnetic field; and a rotor which may have opposed ends and which may extend through the at least one opening of the stator casing, the rotor may further include an output shaft. The power toothbrush may further include a workpiece having a brush head coupled thereto and which may be coupled to one of the opposed ends of the output shaft.

A toothbrush apparatus and system and associated method. The apparatus includes a sensing module that performs at least one of the following: detect at least one time period associated with use of the toothbrush apparatus, detect one or more movements of the toothbrush apparatus, and any combination thereof. The apparatus's one or more processors communicatively coupled to the sensing module determine one or more measurements based on at least one of: the detected time periods, the detected movements, and any combination thereof, and store the determined measurements in one or more memory locations communicatively coupled to the processors. The apparatus also includes one or more feedback modules that receive the stored measurements and encode the measurements into corresponding feedback signals. One or more data transfer modules transmit the feedback signals.

An actuator (52) for a personal care appliance (50) comprises a housing (54), a spindle (64), a tangential actuator portion (70), and an axial actuator portion (72). The tangential actuator portion (70) includes first and second magnet and pole assemblies (76,78) that define a tangential spring function of the tangential actuator portion. The axial actuator portion (72) includes third and fourth magnet and pole assemblies (90,92) that define an axial spring function of the axial actuator portion. At least one of (i) the first and second magnet and pole assemblies (76,78) of the tangential actuator portion (70) and (ii) third and fourth magnet and pole assemblies (90,92) of the axial actuator portion are configured to enhance a corresponding spring function of the axial actuator portion or tangential actuator portion, respectively.

A powered toothbrush apparatus with capacitive touch control is disclosed. The tooth brush includes a head portion having an oscillating tuft block driven by a motor, a handle portion, and an elastically deformable capacitive touch control panel mounted in the handle portion. In one embodiment, the control panel includes a plurality of capacitance sensor buttons each having movable sensor targets paired with a corresponding capacitance sensor electrically connected to a programmable microprocessor. Applying finger pressure on the control panel adjacent a sensor target changes capacitance of the sensor button. The microprocessor detects the change in capacitance, which controls the operating mode of the toothbrush including on/off, motor speed, brushing mode such as pulse, or other. A related operating method is disclosed.

A powered toothbrush head that, in one embodiment, includes a head portion including a first movable tuft block configured for holding tooth cleaning elements. The first movable tuft block is operably connected to a motor-driven drift shaft for movement. An eccentric cam formed on the shaft drives the first movable tuft block via engagement with a slot formed in the body of the first movable tuft block. The first movable tuft block is movable in a combination oscillating motion comprising vertical motion and lateral pivoting or tilting motion upon rotation of the drive shaft. A related method for oscillating the first movable tuft block is disclosed.

The present invention describes a method for a U-shaped teeth brush device having a conformable shape adjusting U-shaped teethbrush module and one or more individual tooth brushes coupled to the power drive mechanism, each brush having a sensor, piezoelectric crystal and transducer and each tooth brush having a block anchor coupled to the power drive, under smart controls, an electronic control system for sensing individual tooth pressure and controlling motor transmission of vibration to prior positioned brushes, whereby a users unique mouth features can be accounted for by adjusting U-shape distal ends to fit through the users mouth and align with users teeth arch for programmatically brushing more than one tooth simultaneously.

A power toothbrush apparatus may include a body having a cavity and an opening leading to the cavity. An electric motor may be situated within the cavity and may include first and second biasing members; a stator casing situated between, and linearly biased by, the first and second biasing members, the stator casing may further include at least one opening and at least one electromagnet to generate a magnetic field; and a rotor which may have opposed ends and which may extend through the at least one opening of the stator casing, the rotor may further include an output shaft. The power toothbrush may further include a workpiece having a brush head coupled thereto and which may be coupled to one of the opposed ends of the output shaft.