Patent ID: 7137166

Claim:
A toothbrush comprising a combination of a grip handle and a replaceable head which carries bristles extending in a direction, the handle and head being disposed along a longitudinal head-handle direction in which; the grip handle is elongated and at an end thereof has a socket therein which has an opening facing in the direction of the head, and socket side walls extending away from the opening in a depth direction, the socket and its side walls comprising a tubular structure with the socket comprising the interior of the tubular structure, the end of the handle nearest to the head being in the form of two arms extending toward the head, the two arms being on either side of a plane which includes the longitudinal direction and the direction of the bristles, the tubular structure being supported resiliently between these two arms, the head has a pin oriented in the direction of the handle and which is insertable into the socket in the depth direction of the socket, the pin being releasably engageable with the socket, characterised in that at least part of the socket side walls comprise a resiliently deformable elastomer material different to the material of the pin, and the resiliently deformable elastomer material is deformed resiliently by the action of inserting the pin into the socket, so as to retain the head in engagement with the handle under the stresses experienced by the toothbrush during use in toothbrushing.