Back to results
US 6,957,654 B2Granted
Mascara brush with dual lumen bristle fibers
AssigneeCrown Cork & Seal Technologies Corporation
InventorsAntonio Montoli, Raymond P. LeGassie
Life of this patent
Estimating the term…
Abstract
An improve mascara brush has a typical twisted wire core containing bristles having a double lumen cross-section. The bristles are generally circular in shape, and hollow, with a dividing web across the midpoint of the bristle, thereby defining two longitudinal lumens extending along the length of the bristle. In other embodiments, the bristle is oval, square, rectangular or another polygonal shape.
Claims3
A brush for applying mascara to eyelashes, comprising:
- a twisted wire core holding a plurality of radially extending nylon bristles to form a brush at an end of the core, said bristles being substantially hollow and having a longitudinal web dividing an interior of said bristles into two longitudinal lumens, said longitudinal lumens extending through at least a substantial portion of said bristles;
- and said bristles have a diameter of between about 0.004 inch to about 0.0099 inch and a durometer of about 92 Shore D to about 120 Rockwell R and a bristle density of between about 10 to about 40 bristles per turn.
Dependencies are inferred from the claim text.