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US 9,538,835 B2Granted
Bristle extruding toothbrush
OwnerHerman Grewalinventor
Life of this patent
Estimating the term…
Abstract
The present concept is a bristle extruding toothbrush and the method of the bristle extruding toothbrush replacing its own bristles. Polymer is stored in a reservoir in the body of the toothbrush before being heated and urged into an extrusion cavity by a screw housed in the reservoir. Molten polymer is extruded through bristle apertures on the extrusion face found on the brush head to form bristles by the action of an extrusion mold plunger.
Claims16
A bristle extruding toothbrush comprises;
- a) a heated body with a reservoir for receiving polymer therein;
- b) a screw housed within the reservoir for urging polymer into an extrusion cavity in a brush head connected to the body;
- c) the brush head includes an extrusion face with bristle apertures;
- d) a means for extruding polymer out of the extrusion cavity and through the bristle apertures thereby forming a bristle extrusion which includes bristles.
1 more element
A method of extruding bristles from the brush head of a toothbrush comprising the steps:
- a) fill a reservoir in the toothbrush body with polymer;
- b) connect a bottom end of the body to a dock with a brush head downward, and place the brush head into an extrusion mold;
- c) push an extrude button to activate an extrusion process;
- d) a screw and neck heater warms the polymer to a molten extrusion temperature;
- e) a motor drive in the dock reciprocates and turns the screw urging the polymer along a neck channel and into an extrusion cavity;
- f) advancing an extrusion mold plunger to urge the molten polymer through bristle apertures thereby forming new bristles.
3 more elements
Dependencies are inferred from the claim text.