The present invention discloses an electric pet hair brush. The electric pet hair brush. comprises a shell, a roller, a control module and a power module. The shell has an accommodation space. The control module and the power module are electrically connected and are accommodated in the accommodation space. The roller is arranged at the front end of the shelf and is connected with the power module. The roller can be driven by the power module to rotate. The roller comprises a roller main body and multiple comb assemblies. The power module drives the roller main body to rotate, and the multiple comb assemblies can alternatively and circularly extend from the roller main body or retract into an accommodation space of the roller main body with the rotation of the roller main body.

A brush includes a head with bristles, an actuator that expands and contracts in accordance with an electric signal, a connection member that transmits vibration of the actuator to the head, and a body including a housing that houses the actuator. The direction of reciprocal vibration of the head is at a predetermined angle relative to the direction of extension of the housing.

A head for a personal care device having a carrier including a front surface, at least one cleaning element partly embedded in the carrier and thus having an embedded cleaning element portion and a non-embedded cleaning element portion extending from the front surface of the carrier between a base end on the front surface and a free end; the embedded cleaning element portion extending from the front surface between a top end on the front surface and a bottom end, wherein the base end of the non-embedded cleaning element portion has a base end cross-sectional shape and a base end cross-sectional area, and the top end of the embedded cleaning element portion has a top end cross-sectional shape that is different to the base end cross-sectional shape and a top end cross-sectional area that is larger than the base end cross-sectional area.

A head for a personal care device having a carrier including a front surface, at least one cleaning element partly embedded in the carrier and thus having an embedded cleaning element portion and a non-embedded cleaning element portion extending from the front surface of the carrier between a base end on the front surface and a free end; the embedded cleaning element portion extending from the front surface between a top end on the front surface and a bottom end, wherein the base end of the non-embedded cleaning element portion has a base end cross-sectional shape and a base end cross-sectional area, and the top end of the embedded cleaning element portion has a top end cross-sectional shape that is different to the base end cross-sectional shape and a top end cross-sectional area that is larger than the base end cross-sectional area.

A wafer cleaning apparatus includes: a brush, configured to wash a surface to be cleaned of a wafer; a base for carrying the brush, the base having at least one conductive disk, a disk surface of the conductive disk being parallel to the surface to be cleaned, and the base being able to rotate around an axis of the base; and a magnetic field generation structure configured to emit, to the conductive disk, a magnetic field perpendicular to the disk surface of the conductive disk, so that an induced electric field is generated in the conductive disk during the rotation of the base. The quality of wafer cleaning and the yield of wafer products can be improved.

A wafer cleaning apparatus includes: a brush, configured to wash a surface to be cleaned of a wafer; a base for carrying the brush, the base having at least one conductive disk, a disk surface of the conductive disk being parallel to the surface to be cleaned, and the base being able to rotate around an axis of the base; and a magnetic field generation structure configured to emit, to the conductive disk, a magnetic field perpendicular to the disk surface of the conductive disk, so that an induced electric field is generated in the conductive disk during the rotation of the base. The quality of wafer cleaning and the yield of wafer products can be improved.

A meso-abrasive dentifrice formulation of from 15 wt % to 30 wt % a first abrasive, from 10 wt % to 15 wt % a second abrasive, and excipients. The second abrasive is silica and is different from the first abrasive. A system is also disclosed for cleaning a human oral cavity having the disclosed meso-abrasive dentifrice formulation and an oscillating cup for delivery of the dentifrice formulation. The system demonstrates a Cleaning Efficiency Index (CEI) of from 2.34 to 2.45. The system demonstrates an Increase in Gloss Score of greater than 28 and a system Relative Dentin Abrasiveness (RDA) value less than 100.

A meso-abrasive dentifrice formulation of from 15 wt % to 30 wt % a first abrasive, from 10 wt % to 15 wt % a second abrasive, and excipients. The second abrasive is silica and is different from the first abrasive. A system is also disclosed for cleaning a human oral cavity having the disclosed meso-abrasive dentifrice formulation and an oscillating cup for delivery of the dentifrice formulation. The system demonstrates a Cleaning Efficiency Index (CEI) of from 2.34 to 2.45. The system demonstrates an Increase in Gloss Score of greater than 28 and a system Relative Dentin Abrasiveness (RDA) value less than 100.

A vacuum cleaner is disclosed. The vacuum cleaner according to embodiments of the present disclosure includes a main body and a suction nozzle. The suction nozzle includes a housing, a button, a rotating brush, and a detachable cover. The housing includes an insertion hole. The button includes a first protrusion. The detachable cover includes a cover body and a slider. The cover body includes an insertion member, a second protrusion, and a rail. The rotating brush is rotatably mounted to the slider. The slider is mounted on the rail so as to be movable in a first direction. The insertion member is inserted into the insertion hole in the first direction. As the button is moved, the first protrusion is selectively positioned in a movement path in the first direction of the second protrusion.

A vacuum cleaner is disclosed. The vacuum cleaner according to embodiments of the present disclosure includes a main body and a suction nozzle. The suction nozzle includes a housing, a button, a rotating brush, and a detachable cover. The housing includes an insertion hole. The button includes a first protrusion. The detachable cover includes a cover body and a slider. The cover body includes an insertion member, a second protrusion, and a rail. The rotating brush is rotatably mounted to the slider. The slider is mounted on the rail so as to be movable in a first direction. The insertion member is inserted into the insertion hole in the first direction. As the button is moved, the first protrusion is selectively positioned in a movement path in the first direction of the second protrusion.