| 摘要 |
<p>#CMT# #/CMT# The bristle bunch (1) has thick bristles (2) whose wear behavior is different from wear behavior of thin bristles (3). Each thick bristle includes a color changeable wear indicator (5) for indicating color change of the thick bristles. The thin bristles are subjected to visible mechanical changes i.e. bending, with continuous mechanical stress. The mechanical changes are recognizable after a predetermined service life of a toothbrush. A cross-sectional area of the thin bristles is smaller than a cross-sectional area of the thick bristles. Free ends of the bristles are round in shape. #CMT#USE : #/CMT# Bristle bunch for a toothbrush (claimed) e.g. manual toothbrush and electric toothbrush. #CMT#ADVANTAGE : #/CMT# The thick bristles include color changeable wear indicators for indicating color change of the thick bristles, respectively, and the thin bristles are subjected to the visible mechanical changes i.e. bending, with continuous mechanical stress, such that wear of the toothbrush is clearly indicated to a user. The free ends of the bristles are round in shape, thus avoiding injury to gums of the user when brushing teeth. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of a bristle bunch with thick bristles and thin bristles. 1 : Bristle bunch 2 : Thick bristles 3 : Thin bristles 5 : Color changeable wear indicator.</p> |
