Device for supporting and operation a dental floss
First Claim
1. A device e for supporting and operating a dental floss comprising:
- a rear pat enclosed in a housing shaped with a hand grip and containing motor means having a rotating pinion and drive means of said housing;
a front part coupled with a corresponding coupling zone of said rear part and having means for supporting a roll of dental floss, said front part having an elongate section terminating in a fork with said dental floss extending from said roll and along said elongated part and having a portion stretched between branches of said fork;
said drive means located in said rear part to engage said motor pinion comprising;
a series of cascade-connected crown gears rotatably supported by a plurality of vertical spindles, each of said crown gears having two sections of different diameter, with a section of smaller diameter of each crown gear engaging with a section of larger diameter of a subsequent crown gear, a section of larger diameter of a first crown gear engaging with said motor pinion while a last crown gear is keyed onto a first spindle to dive the same first spindle into axial rotation; and
a rocker element rotatably supported by a second spindle and having an end engaging with a cam integral with one of said crown gear and having the other end engaging with a third spindle to bring about a swinging motion about a vertical axis of said third spindle.
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Accused Products
Abstract
The device comprises a rear part containing a motor connected through a series of crown gears and of spindles to a front part shaped complementarily to the rear part, and containing a reel on which a dental floss is wound up, and a truncated-cone element on which the floss winds up as it is used that engages with a spindle driven into continuous rotation, while a small roller with two circumferential races engages with another spindle which is made to oscillate about its vertical axis, so that the dental floss encompasses the small roller and runs between the ends of two branches of a fork and is thus caused to advance swingingly as well as gradually removed after use.
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Citations
12 Claims
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1. A device e for supporting and operating a dental floss comprising:
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a rear pat enclosed in a housing shaped with a hand grip and containing motor means having a rotating pinion and drive means of said housing; a front part coupled with a corresponding coupling zone of said rear part and having means for supporting a roll of dental floss, said front part having an elongate section terminating in a fork with said dental floss extending from said roll and along said elongated part and having a portion stretched between branches of said fork; said drive means located in said rear part to engage said motor pinion comprising; a series of cascade-connected crown gears rotatably supported by a plurality of vertical spindles, each of said crown gears having two sections of different diameter, with a section of smaller diameter of each crown gear engaging with a section of larger diameter of a subsequent crown gear, a section of larger diameter of a first crown gear engaging with said motor pinion while a last crown gear is keyed onto a first spindle to dive the same first spindle into axial rotation; and a rocker element rotatably supported by a second spindle and having an end engaging with a cam integral with one of said crown gear and having the other end engaging with a third spindle to bring about a swinging motion about a vertical axis of said third spindle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification