Brushroll for vacuum cleaner
First Claim
Patent Images
1. A brushroll for a vacuum cleaner, comprising:
- an injection-molded brush dowel having a central rotational axis defining an origin for a first axis extending through the dowel and a second axis extending through the dowel perpendicularly to the first axis to conceptually divide the dowel into quadrants;
two bristle stiffeners integrally molded with the dowel and lying in opposing quadrants, each having a parting line which is radially spaced from and non-parallel to the rotational axis; and
a plurality of stiffened bristles protruding from the brush dowel adjacent to the bristle stiffeners;
wherein the first axis defines a line of draw for a two-piece mold forming the brush dowel and bristle stiffeners.
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Abstract
A brushroll dowel for a vacuum cleaner having bristle stiffeners protruding from a brush dowel. The brushroll can be made using an injection molding process, with the bristle stiffeners integrally molded with the brush dowel and a plurality of stiffened bristles protruding from the brush dowel adjacent to the bristle stiffeners.
40 Citations
20 Claims
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1. A brushroll for a vacuum cleaner, comprising:
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an injection-molded brush dowel having a central rotational axis defining an origin for a first axis extending through the dowel and a second axis extending through the dowel perpendicularly to the first axis to conceptually divide the dowel into quadrants; two bristle stiffeners integrally molded with the dowel and lying in opposing quadrants, each having a parting line which is radially spaced from and non-parallel to the rotational axis; and a plurality of stiffened bristles protruding from the brush dowel adjacent to the bristle stiffeners; wherein the first axis defines a line of draw for a two-piece mold forming the brush dowel and bristle stiffeners. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification