公开(公告)号：US4033008A

公开(公告)日：1977-07-05

申请号：US673769

申请日：1976-04-05

Applicant: William C. Warren ,  Anthony R. Volpe ,  Kedar N. Rustogi

Inventor： William C. Warren ,  Anthony R. Volpe ,  Kedar N. Rustogi

IPC: A46B9/04

CPC classification number: A46B9/04 ,  A46B2200/1066

Abstract: A toothbrush head has two inner longitudinal rows of relatively soft bristle tufts, two outer longitudinal rows of shorter relatively hard bristle tufts, and a transverse end row of hard bristle tufts that are longer than any of the other tufts, and the end surfaces of the bristle tufts of the inner and outer rows are tapered laterally outwardly from an apex of the softer bristles that extends longitudinally medially of the head.

Abstract translation: 牙刷头具有两个相对柔软的刷毛簇的内部纵向排，两个较短的相对较硬的刷毛簇的外部纵向列，以及比其他簇中的任一个更长的硬刷毛簇的横向端排， 内排和外排的刷毛簇从从头部纵向延伸的较软的刷毛的顶点横向向外渐缩。