Pacing toothbrush

• US 5,544,382 A
• Filed: 09/14/1994
• Issued: 08/13/1996
• Est. Priority Date: 09/14/1994
• Status: Expired due to Term

• Current Assignee: Philips Oral Healthcare Incorporated (Koninklijke Philips N.V.)
• Original Assignee: Optiva Corp. (Koninklijke Philips N.V.)
• Inventors: Engel, David, Giuliani, David, McMahon, Ryan W.
• Primary Examiner(s): ROBERTS JR, EDWARD
• Application Number:
  US08/306,132
• Time in Patent Office: 699 Days
• Field of Search: 15/22.1, 15/22.2, 15/22.4, 15/105, 15/167.1, 433/216
• US Class Current: 15/22.1
• CPC Class Codes: A61C 17/22 with brushes, cushions, cups, or the like brush bodies, e.g. arrangements of the bristles A46B
• CPC Class Codes: A61C 17/221 Control arrangements therefor
• CPC Class Codes: A61C 17/224 Electrical recharging arrangements
• CPC Class Codes: A61C 2204/002 using batteries

Abstract

A vibrating toothbrush, which includes a handle member, an elongated arm which has a brushhead at the distal end thereof, and a drive assembly for moving the brushhead at a selected velocity. Responsive to an on/off switch on the toothbrush is an on/off variable, which enables a master clock to produce a drive signal, the on/off variable being reset by a 120-second timer. A quadtimer variable, when in the enabled state, is responsive to the on/off switch to produce an audible signal and a difference in brush velocity at 30-second intervals within the 120-second period.

Claims

1. A dental hygiene device for cleaning teeth, comprising:

a power toothbrush, including a support member having a brushhead at a distal end thereof and means for driving the brushhead;

timing means, responsive to the device being turned on, for producing successive indications of intervals of elapsed time, wherein the intervals of elapsed time are related to desired times for brushing portions of the dental region, wherein the successive indications of time are provided within a pre-established set period of time during which the brush is operating; and

means for maintaining the status of the timing means for a selected period of time after the apparatus has been turned off during said pre-established period of time after the apparatus has been turned on.

2. An apparatus of claim 1, wherein the successive indications of time are provided within a preestablished set period of time during which the toothbrush is operating.

3. An apparatus of claim 2, wherein the set period of time is approximately two minutes and wherein the selected intervals of time are approximately 30 seconds.

4. An apparatus of claim 1, wherein the indications are a selected one of a) an audible signal and b) a detectable change in bristle movement.

5. An apparatus of claim 4, wherein the indications comprise both an audible signal and a detectable change in bristle movement.

6. An apparatus of claim 1, including means for changing the state of the timing means between enabled and disabled after the apparatus is turned on.

7. An apparatus of claim 6, wherein the changing means is responsive to an on/off switch being pressed on for a selected period of time.

8. An apparatus of claim 7, wherein the selected period of time is approximately two seconds.

9. An apparatus of claim 6, wherein a first audible signal indicates that the timing means has been enabled and a second audible signal different from the first audible signal indicates that the timing means has not been activated.

10. A dental hygiene device for cleaning teeth, comprising:

a power toothbrush, including a support member having a brushhead at a distal end thereof and means for driving the brushhead;

timing means, responsive to the device being turned on, for producing successive indications of intervals of elapsed time, wherein the intervals of elapsed time are related to desired times for brushing portions of the dental region; and

means for changing the state of the timing means between enabled and disabled after the device has been turned on without turning the device off.

11. An apparatus of claim 10, wherein said changing means is responsive to a device on/off switch being held on for a selected period of time.