Brush head manufacture
AssigneeHamilton Acord Limited
InventorHoward J. Waghorn
Life of this patent
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Abstract
A method of manufacturing a brush head, comprises: locating in a ferrule the basal end portion of a knot of bristles; compressing at least one wedge of resiliently deformable material by an amount such that the wedge or wedges remains capable of recovering to its or their original size and shape; before the wedge or wedges have recovered to their original size and shape, inserting them into the basal end portion of the knot of bristles in the ferrule; the wedge or wedges, as it or they recover compressing the bristles against an inside surface of the ferrule to enhance retention o the bristles by the ferrule; impregnating the basal end portion of the knot of bristles with liquid resin; and thereafter allowing or causing the resin to harden to retain the basal end portion of the knot of bristles in the ferrule.
Claims9
A method of manufacturing a brush head, comprising:
- locating in a ferrule a basal end portion of a knot of bristles;
- compressing at least one wedge of resiliently deformable material by an amount such that the at least one wedge remains capable of recovering to its original size and shape;
- before the at least one wedge has recovered to its original size and shape, inserting the at least one wedge into the basal end portion of the knot of bristles in the ferrule;
- the at least one wedge, as it recovers compressing the bristles against an inside surface of the ferrule to enhance retention of the bristles by the ferrule;
- impregnating the basal end portion of the knot of bristles with liquid resin;
- and thereafter the resin hardens to retain the basal end portion of the knot of bristles in the ferrule.
Dependencies are inferred from the claim text.