Powered dental floss

• US 5,170,809 A
• Filed: 12/16/1991
• Issued: 12/15/1992
• Est. Priority Date: 12/25/1990
• Status: Expired due to Term

• Current Assignee: Panasonic Electric Works Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Asahi Matsushita Electric Works Ltd. (Panasonic Holdings Corporation)
• Inventors: Imai, Takahiro, Kawamoto, Yoji
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US07/807,590
• Time in Patent Office: 365 Days
• Field of Search: 132/322, 132/323
• US Class Current: 132/322
• CPC Class Codes: A61C 15/047 power-driven
• CPC Class Codes: A61C 15/048 with heads removable from handle, e.g. interchangeable heads

Abstract

A powered dental floss includes a floss and a hand grip provided with an output shaft which has a longitudinal axis and to which the floss is coupled. The hand grip incorporates a motor and a drive mechanism which is powered by the motor to impart a vibrating motion to the output shaft. The floss is stretched substantially in parallel with the longitudinal axis of the output shaft so that it is driven to vibrate along its length for effectively cleaning between the teeth.

Claims

1. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss connected to said output shaft and stretched to extend in a direction substantially parallel to and in alignment with said longitudinal axis so as to be driven by said output shaft to vibrate in that direction.

2. A powered dental floss as set forth in claim 1, said drive mechanism vibrates said floss with a stroke of 1.5 to 8.0 mm and at a frequency of 1000 to 3500 cycles per minute.

3. A powered dental floss as set forth in claim 1, wherein said floss is detachably coupled to said output shaft.

4. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a drive mechanism powered by a motor to cause said output shaft to vibrate or rotate about said longitudinal axis;

an attachment carrying a floss and being detachably connected to said output shaft, said attachment including a motion-converting mechanism which converts the motion of said output shaft about its longitudinal axis into a vibrating motion of said floss in a direction parallel to said longitudinal axis of said output shaft.

5. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

(a) a floss connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction;

(b) a toothbrush selectively detachable to said output shaft in place of said floss.

6. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction;

means connected to said drive mechanism for selectively imparting said vibrating motion along said longitudinal axis and a vibrating motion about said longitudinal axis.

7. A powered dental floss as set forth in claim 6, wherein said floss extends in parallel with said longitudinal axis and is offset therefrom to a slight extent.

8. A powered dental floss comprising;

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction;

a load detector which monitors a load being applied to said motor and provides an output signal indicative of said load being monitored; and

a controller which, in response to said output signal, varies an operational speed of said drive mechanism in order to correspondingly change the vibration rate of said output shaft.

9. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction;

a load detector which monitors an overload condition of said motor and provide an overload signal indicative thereof; and

a controller which, in response to said overload signal, stops operating said drive mechanism.

10. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction;

said drive mechanism including means for varying the vibration stroke of said output shaft.

11. A powered dental floss comprising:

a hand grip provided with an output shaft having a longitudinal axis, said hand grip incorporating a motor and a drive mechanism powered by said motor to cause said output shaft to vibrate along said longitudinal axis;

a floss supported on a floss attachment which is detachably connected to said output shaft and stretched to extend in a direction substantially parallel to said longitudinal axis so as to be driven by said output shaft to vibrate in that direction.

12. A powered dental floss as set forth in claim 11, wherein said floss is driven to vibrate along the longitudinal axis of said output shaft.

13. A powered dental floss as set forth in claim 11, wherein said floss attachment include a motion-converting mechanism for transforming a motion of said output shaft into a vibrating motion of said floss along a length of said floss.

14. A powered dental floss as set forth in claim 11, wherein said floss attachment is molded from a plastic material into which said floss is integrally embedded.

15. A powered dental floss as set forth in claim 11, wherein said floss is supported on a holder which is detachable to said floss attachment.

16. A powered dental floss as set forth in claim 11, wherein said attachment includes angle means of angularly displacing said floss in relation to said longitudinal axis of said output shaft.