| 摘要 |
A dental floss applicator having an elongated body, a bow across which the floss is to be stretched, a storage area for a supply of floss, a supply capstan for drawing the floss out of the storage area, a take-up capstan for disposal of the used floss, an axle to support the supply and take-up capstans, and guides to guide the floss between the bow and the capstans. The supply and take-up capstans are coaxial and integrated into one piece so that they rotate together as one rigid-body around the axle. The supply capstan is smaller in diameter than the take-up capstan, therefore, as the capstans are turned to advance the floss they also stretch the floss to generate floss tension. The axle is an extension of the body; it is hollow and it supports the capstans from a direction along the capstans common axis, on the side of the supply capstan (away from the take-up capstan). The guide is also an extension of the body, reaching axially over the supply capstan to guide the floss to the take-up capstan. The body is also hollow, thus providing rigidity while not having any thick areas that would be expensive to mold out of plastic.
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