Patent ID: 6923187

Claim:
A brush for applying mascara to eyelashes, comprising: a twisted wire core holding a plurality of radially extending bristles to form a brush at an end of the core, said bristles being substantially hollow and having a Z-shaped cross-sectional shape forming a discontinuous enclosed cross-sectional shape defined by upper and lower walls connected to a longitudinal web dividing an interior of said bristles into two longitudinal voids, said longitudinal voids extending through at least a substantial portion of said bristles, said upper and lower walls extending away from and back to said longitudinal web whereby said two longitudinal voids are substantially enclosed except for narrow slots which provide communication between an enclosed interior of each longitudinal void of said bristles and an exterior of said bristles, said upper and lower walls and the web having a substantially constant wall thickness with no reduction in thickness in the region of connection between the web and the upper and lower walls, free ends of the walls being spaced from the web to define the narrow slots, and the spacing being generally less than the wall thickness.