Brush for gum massage and tooth cleaning and process for producing the bristles of such a brush
AssigneeCoronet.sub.-- Werke GmbH
InventorGeorg Weihrauch
Life of this patent
Estimating the term…
Abstract
A gingival massaging and tooth cleaning brush comprises a bristle carrier with handle and on the bristle carrier individual or bundlewise fixed plastic bristles. For improving the massaging action the bristles are waved transversely to their axis, accompanied by the formation of distinct, stud-like wave tops and with a short wave length.
Claims14
A brush for gingival massage and cleaning teeth, the brush comprising:
- a bristle carrier having a handle;
- and plastic bristles fixed to said bristle carrier, said bristles having a waved shape transverse to a bristle axis to form protruding bud-shaped wave tops, wherein said waved shape has a wave height between 1.2 and 2 times a bristle diameter.
A method for manufacturing plastic bristles for use in a brush, the bristles fixed to a bristle carrier and having a waved shape transverse to a bristle axis to form protruding bud-shaped wave tops, the method comprising the steps of:
- a) passing a plastic continuous monofilament member between a first pair of two gear-like shaping rollers to wave said monofilament member;
- a1) passing said monofilament member between a second pair of sharing rollers directly downstream of said first pair of rollers, wherein said second pair of rollers have second parallel axes forming an angle with respect to first parallel axes of said first pair of rollers;
- a2) passing said monofilament member between a third pair of shaping rollers directly downstream of said second pair of rollers, said third pair of rollers having third parallel axes forming an angle with respect to said first and said second parallel axes;
- b) holding said monofilament member during steps a), a1), and a2) to prevent twisting about the bristle axis;
- c) winding said monofilament member downstream of said first pair of rollers onto a take-up reel;
- and
- d) cutting said monofilament member to length for producing the bristles.
Dependencies are inferred from the claim text.