| 摘要 |
<p>A toothbrush consists of a handle (1), a brush head (4, 5) bearing an array of bristles (3), and a pair of interlocking combs (20, 21) on the handle, the combs being movable between a position lying wholly against or within the handle (1) to a position of engagement with the bristles (3). The combs (20, 21) may be varied in distance from the base (4) in which the bristles (3) are set to adjust the bristle hardness, or may cause the bristles (3) to bend to vary the bristle angle, or may cause the bristles to vibrate. The brush head (4, 5) may be detachable and disposable.</p> |
