Brush with self retaining bristles
AssigneeNorth American Philips Corporation
InventorsFriedbert Fassler, Frank Kigyos, Bobby L. Slaughter
Life of this patent
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Abstract
A process for manufacturing a brush having an integral bristle retention feature. One end of each bristle tuft to be inserted into a molded brush body is fused into a ball-shaped mass. The body is molded around the mass, thereby anchoring the tufts in the body.
Claims4
A brush comprising an injection molded body and at least one tuft of bristles having an end thereof retained in said body, characterized in that said end comprises a fused mass having a cross-sectional area larger than that of the tuft, said fused mass being disposed immediately adjacent a face of the body from which the tuft projects, thereby facilitating plugging of a tuft-receiving hole in a mold in which the body is formed, said body being molded around said fused mass such that it defines a cavity conforming to the shape of the fused mass and having in said face an opening with a cross-sectional area smaller than that of the fused mass, thereby effecting retention of the tuft end in the body.
Dependencies are inferred from the claim text.