Assertion: bristle | /r/CapableOf | taper in longitudinal direction
Facets:
Source sentences:
text: 3,302,230 shows a toothbrush having bristles which taper in the longitudinal direction and which are designed to be of triangular, star-shaped or rhombic configuration in cross section in order to obtain a scraping effect with the outer surface contoured edges and to achieve an improved adhesion of the toothpaste compared to circular cross sections.