Mechanized tooth brush having movement in two planes

• US 4,420,851 A
• Filed: 12/07/1981
• Issued: 12/20/1983
• Est. Priority Date: 12/07/1981
• Status: Expired due to Fees

• Current Assignee: Stanley M. Wiener
• Original Assignee: Stanley M. Wiener
• Inventors: Wiener, Stanley M.
• Primary Examiner(s): ROBERTS JR, EDWARD
• Application Number:
  US06/328,373
• Time in Patent Office: 743 Days
• Field of Search: 15/22 R, 15/22 A, 15/22 C, 15/23, 15/24, 15/28, 15/29, 15/97 R, 74/22 R, 192/0.02 R, 192/21.5, 192/84 R, 192/84 E, 192/84 PM, 51/170 R
• US Class Current: 15/22.1
• CPC Class Codes: A61C 17/26 driven by electric motor
• CPC Class Codes: A61C 17/3436 Rotation around the axis perpendicular to the plane defined by the bristle holder
• CPC Class Codes: A61C 17/3463 Translation along the axis perpendicular to the plane defined by the bristle holder
• CPC Class Codes: A61C 17/3472 with combined movements of the brush body
• CPC Class Codes: Y10T 74/18024 Rotary to reciprocating and rotary

Abstract

An elongated tooth brush handle houses a motor at the bottom of the handle. The motor output shaft is surrounded by an inner magnet which in turn is coupled to an outer magnet. When opposite poles face each other the inner magnet will turn the outer magnet. The outer magnet turns on a bearing which will give it longitudinal motion. The outer magnet is coupled to flexible shaft which passes out of the head of the handle to an output coupling through a slit in the handle head. A small rotary brush can be affixed to the output coupling.

Claims

1. A mechanical tooth brush having rotary and longitudinal motion comprising:

an elongated cylindrical housing;

said housing contains a motor located at a first end of said housing;

said housing contains an orifice at a second end opposite to said first end at which said motor is located within said housing;

an output shaft is connected to said motor;

an inner magnet is connected to said output shaft;

said inner magnet is perpendicular to said output shaft;

a flexible shaft extends through the interior of said housing and passes outside said housing through said orifice;

a guide tube guides said flexible shaft through said interior of said housing until reaching said orifice;

said flexible shaft adapted for slidable longitudinal motion within said guide tube;

said flexible shaft exits said housing and is connected to an output coupling at a first end of said flexible shaft outside of said interior of said housing;

a cup-shaped magnet is connected to a second end of said flexible shaft within housing, opposite to said first end of said flexible shaft;

said cup-shaped magnet forms a first edge shaped in a circular, sinusoidal wave;

a bearing rotatable on a bearing shaft;

said first edge of said cup-shaped magnet bears continuously on said bearing, to provide said flexible shaft with longitudinal motion as said flexible shaft rotates; and

said cup-shaped magnet is disposed over and around said inner magnet.