| 摘要 |
An improved dental floss applicator for use in dispensing and supporting a strand of dental floss under tension for cleaning teeth comprises an elongated supporting frame having on one end two laterally spaced furcations. Tips on the furcations have floss-guiding portions by means of which a floss-strand may be tensioned therebetween. A handle portion is provided on the other end of the frame. A capstan device is mounted for rotation on the frame, with supply and take-up capstan portions axially spaced thereon. Said capstan device is disposed intermediate the opposite ends of said frame, and said supply and take-up portions are on opposite sides, respectively, thereof. The handle portion has a chamber therein which opens through the side of the frame which is adjacent to the supply capstan portion. A cover slidably mounts on the handle portion in covering relation with the opening of the chamber. Detent means is provided for detachably securing the cover in closed position. A supply of floss strand is provided in the chamber. The strand is threaded through the detent means, about the supply capstan portion, across the furcations, and about the take-up capstan portion where it is secured to the capstan device. The detent means frictionally grips the strand. The threading is in a direction such that as the capstan device is rotated in one direction, the strand is tensed from the detent means about the capstan device and across the aforesaid furcations.
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