Toilet – Toothpick – Having thread holder
Patent
1994-12-08
1997-03-04
Lucchesi, Nicholas D.
Toilet
Toothpick
Having thread holder
132322, 132323, 132327, 132328, A61C 1500
Patent
active
056069847
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE PRESENT INVENTION
The principal object of the present invention is to provide an effective, easy-to-use and power-driven device for optimizing and comforting the process of using a dental floss to clean teeth.
In accordance with this invention, there is provided an automatic dental flossing device comprising an elongate housing handle with an extending thinner arm forked at its front end, in which a pair of removable reels with dental floss on them, a transmission gear system, an operating switch, a winding switch and a powered motor are installed. The handle is divided into three casings which are the upper, bottom and rear casings, respectively. The upper casing is openable for storing or changing the dental floss on the two reels. The gear system is mounted in the bottom casing. The motor is in the rear casing.
A pair of guiding slots are grooved on the forked arm which has a pair of slotted conducting tube-like means on its two tines, for guiding the dental floss from the upper casing to the tines of the forked arm.
The dental floss, stretched across the two tines of the forked arm, is guided into the handle and wound on the two reels one of which supplies fresh dental floss, another of which takes up the used one.
The dental floss can be automatically reciprocated by pulling the operating switch means backward, or tightly held by pushing the same switch means forward. Tension of the dental floss is controllable. On the other hand, the dental floss can be wound continually in one direction, backward or forward, by using the winding switch means.
The pair of removable reels carrying the dental floss are driven by the transmission gear system which comprises a primary gear with partially geared circumference, a belt, and two pinions installed on two separate shafts on which the two reels are also installed.
The primary gear can be moved into three engaging positions to alternately drive the two pinions, or engage only one of them, so the dental floss will be manipulated in three different operating modes for reciprocating, supplying or rewinding the dental floss.
The driving belt deliver power from the motor to the primary gear, having flexibility of slipping on the shafts to release any unexpected overload for protecting the device and user as well.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring particularly to the drawings for the purpose of illustration only and not limitation, there is illustrated:
FIG. 1 is a side perspective view of a dental flossing device constructed pursuant to the present invention;
FIG. 2 is a vertical view of said device, partially uncovered, showing general lay-out and positions of the dental floss, the two reels and a part of the operating switch;
FIG. 3 is a longitudinal cross-section view of the said device, mainly illustrating lay-out of the transmission gear system, two reels and the operating switch;
FIG. 4 is a cross-section side view of the handle, showing the winding switch with a yoke for moving the primary gear up and down;
FIG. 5 is a right side view of FIG. 4, schematically illustrating the shape of the winding switch yoke;
FIG. 6 is a schematic to indicate the connection and rotating direction of the three gears;
FIG. 7 is a perspective view of lay-out of the three gears;
FIG. 8 is an enlarged side plane view of the slotted conducting tube-like means installed onto two tines of the arm of the said device;
FIG. 9 is an enlarged front elevational view of the tube-like means;
FIG. 10 is a local cross section vertical view of the tube-like means in a tine of the forked arm;
FIG. 11 is a schematic of electric circuit, showing connection of the two switches.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates generally to an oral hygiene system, specifically concerning a device suited to support and operate a dental floss. There have been some known inventions which allow improvements in the use of the dental floss by trying to make such use easier and more efficient, such as the European patent application No. 0 453 418 A1, which h
REFERENCES:
patent: 3667483 (1972-06-01), McCabe
patent: 3759274 (1973-09-01), Warner
patent: 4245658 (1981-01-01), Lecouturier
patent: 4586521 (1986-05-01), Urso
patent: 5269331 (1993-12-01), Tanriverdi
patent: 5323796 (1994-06-01), Urso
Lucchesi Nicholas D.
Philogene Pedro
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