发明名称 Toothbrush having adjustable brushing pressure
摘要 A toothbrush construction is described in which a bristle head is made moveable with respect to a handle and contains adjustable springs to permit presetting of the brushing pressure. The springs are so formed as to have a break away feature. The user is thus made aware whenever he exerts more than the preset pressure and can learn to brush at a pressure which permits good cleansing and minimizes brushing damage to his teeth and gingival tissue.
申请公布号 US5315732(A) 申请公布日期 1994.05.31
申请号 US19930063769 申请日期 1993.05.20
申请人 HUEFNER, NORMAN F.;BURRELL, JR., FRANK J. 发明人 HUEFNER, NORMAN F.;BURRELL, JR., FRANK J.
分类号 A46B5/00;A46B15/00;(IPC1-7):A46B9/04 主分类号 A46B5/00
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