TOOTHBRUSH Russian patent published in 1998 - IPC

FIELD: sanitary and hygienic articles. SUBSTANCE: toothbrush has first set 31 of discrete bristle bundles having rectangular section perpendicular to axis of bundle of maximum size. Set of bundle 31 is extending in parallel with side of head 11 of toothbrush. Second set 32 of bristle bundles is disposed at head end remote from handle. Set of bundles or one bundle has C-shaped, U-shaped or round section perpendicular to axis of bundle. Arrangement of bristle bundles provides decreased rigidity of tooth in longitudinal direction relative to longitudinal axis of toothbrush. EFFECT: simplified construction and reduced rigidity of toothbrush. 22 cl, 10 dwg