Disclosed herein is a hand-operated rotatable toothbrush in which toothbrush bristles are mounted on a toothbrush body and which is rotatable by a hand. The hand-operated rotatable toothbrush includes: a toothbrush body including a toothbrush head configured to have a hollow toothbrush bristle accommodation portion; and a toothbrush bristle body including a toothbrush bristle base configured to have a fastening means M formed along the center of the side surface of the toothbrush bristle base in a circumferential direction. A fastening means configured to engage with the fastening means of the toothbrush bristle base is formed along the center of the side surface of the inside of the toothbrush bristle accommodation portion in a circumferential direction. An elongated groove is formed to extend downward from the toothbrush bristle accommodation portion toward a toothbrush neck in order to ensure a space for the attachment and detachment of toothbrush bristles.

Disclosed herein is a hand-operated rotatable toothbrush in which toothbrush bristles are mounted on a toothbrush body and which is rotatable by a hand. The hand-operated rotatable toothbrush includes: a toothbrush body including a toothbrush head configured to have a hollow toothbrush bristle accommodation portion; and a toothbrush bristle body including a toothbrush bristle base configured to have a fastening means M formed along the center of the side surface of the toothbrush bristle base in a circumferential direction. A fastening means configured to engage with the fastening means of the toothbrush bristle base is formed along the center of the side surface of the inside of the toothbrush bristle accommodation portion in a circumferential direction. An elongated groove is formed to extend downward from the toothbrush bristle accommodation portion toward a toothbrush neck in order to ensure a space for the attachment and detachment of toothbrush bristles.

A side brush for a robotic vacuum cleaner includes a brush core, a plurality of bristle clusters having a first length, and a plurality of further bristle clusters having a shorter length than the first length. The plurality of bristle clusters and the plurality of further bristle clusters are regularly distributed over a circumferential surface of the brush core.

A side brush for a robotic vacuum cleaner includes a brush core, a plurality of bristle clusters having a first length, and a plurality of further bristle clusters having a shorter length than the first length. The plurality of bristle clusters and the plurality of further bristle clusters are regularly distributed over a circumferential surface of the brush core.

A cleaning device 50 for cleaning a removable dental appliance 12 is described. The device 50 comprises a rotatable upper cleaning brush 14 comprising a plurality of downwardly protruding bristles 16 for cleaning an upper surface of a removable dental appliance. The device also comprises a lower dental appliance holder 18 for holding the dental appliance 12 and which is used in connection with the rotatable upper cleaning brush 14 to limit movement of the dental appliance 12 relative to the rotatable upper cleaning brush 14 wherein, in use, a cleaning action can be applied to the dental appliance 12 by rotating the rotatable upper cleaning brush 14 relative to the dental appliance. The cleaning device 50 further comprises a casing connector 30 for temporarily rotatably interconnecting the rotatable upper cleaning brush 14 and the lower dental appliance holder 18 so as to form a single integrated unit when assembled.

Coupling attachment for rotating brushes. A coupling attachment for rotating brushes is described, which comprises a circular section piece configured by semi-circular enantiomeric pieces coupled together with male-female connection system that comprise hooks in their outer perimeter as temporary fixing means suitable for all kinds of brush bristles: bristles in the shape of filaments, bands, segments or fringes.

Coupling attachment for rotating brushes. A coupling attachment for rotating brushes is described, which comprises a circular section piece configured by semi-circular enantiomeric pieces coupled together with male-female connection system that comprise hooks in their outer perimeter as temporary fixing means suitable for all kinds of brush bristles: bristles in the shape of filaments, bands, segments or fringes.

A dental cleaning appliance includes a handle, and a cleaning tool detachably connected to the handle. The cleaning tool includes a nozzle for delivering a burst of working fluid to the teeth of a user, a stem extending between the handle and the nozzle, and a fluid reservoir for storing working fluid. The fluid reservoir is connected to, and extends around, the stem.

A dental cleaning appliance includes a handle, and a cleaning tool detachably connected to the handle. The cleaning tool includes a nozzle for delivering a burst of working fluid to the teeth of a user, a stem extending between the handle and the nozzle, and a fluid reservoir for storing working fluid. The fluid reservoir is connected to, and extends around, the stem.

An apparatus that cleans end surfaces of a substrate includes: a guide unit including a guide portion that has a channel, through which an end surface of a substrate passes, formed in a front surface thereof; and a brush with a front end whose position is controlled by a rear surface of the guide portion. The channel includes an opening that extends through the guide portion and the front end of the brush contacts an end surface of a substrate passing through the channel via the opening. The guide unit includes a concave portion in which at least the front end of the brush is housed and a suction hole that sucks dust from the concave portion.