Toothbrush
AssigneeAddway Engineering Limited
InventorKa Shing Wu
Life of this patent
Estimating the term…
Abstract
A toothbrush has a handle provided with a rigid curve wire axle at one end. A hollow shank and toothbrush head rotatable and snugly fit to the axle. In the configuration shown bristles on the head are concave. The bristle formation can be made convex by rotating the shank on the axle by 180°. This enables the bristle formation to be concave (as shown) or convex, and adopt configurations in between as desired by a user where the curvature is less concave (or less convex) by rotating the head to intermediary relative positions on the axle
Claims4
A toothbrush having an elongate handle with a longitudinal axis, a rigid curved axle extending forward generally along said longitudinal axis from one end of said handle, and a hollow integrally formed shank and toothbrush head formed of flexible plastics material that rotatable fits over said rigid curved axle along its length such that rotation of said head or shank between ±180° with respect to said curved axle causes said toothbrush head to take up different desired curved orientations.
Dependencies are inferred from the claim text.