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US 3,945,076 AGranted
Circular toothbrush
OwnerThomas Sunginventor
Life of this patent
Estimating the term…
Abstract
A circularly movable mechanical toothbrush having a fly wheel type drive shaft loosely joined to a rod near one edge thereof. Actuation of the fly wheel causes the rod to rotate in a distinct motion that causes toothbrush bristles to be maintained at all times toward selected teeth, which motion compactingly massages gums during a gradual approach stroke, aligns the bristles with tooth striations and interdental spaces during a sweeping brush stroke, and keeps the bristles disposed away from the user's cheek during a return stroke.
Claims6
A circularly movable toothbrush comprising:
- A. a handle comprising a housing which is adaptable for manual clasping, having sides and top and bottom and a rotary drive means and power source mounted within said housing, and an externally mounted actuating means for reversibly operating the rotary drive means;
- B. driving means comprising a drive shaft driven by said rotary driving means, a fly wheel connected at its center to said drive shaft, and loosely connected on its opposite side in an off center position to an actuating rod;
- said actuating rod extending through a head mount portion to a joint portion, and being rotated by said fly wheel in a circular motion to define a circular pattern at and beyond said head mount portion;
- C. said actuating rod being double countersunk at the head mount portion to define a narrow shank portion, a horizontal opening through said narrow shank portion, a guide pin having a diameter of less than said horizontal opening and passing loosely through the opening in said narrow shank portion formed by the double countersink, and said rod rotating at said fly wheel while moving vertically at the portion where the guide pin passes therethrough;
- and
- D. a toothbrush having a stem which is interchangeably attached to said joint portion, having bristles which remain in alignment with teeth striations and interdental spaces of the teeth when turning in the circular pattern defined by said actuating rod.
3 more elements
A circularly movable toothbrush comprising:
- A. a handle comprising a housing which is adaptable for manual clasping, having sides and top and bottom and a rotary drove means and power source mounted within said housing, and an externally mounted actuating means for reversibly operating the rotary drive means.
- B. driving means comprising a drive shaft driven by said rotary driving means, a fly wheel connected at its center to said drive shaft, and loosely connected on its opposite side in an off center position to an actuating rod;
- said actuating rod extending through a head mount portion to a joint portion, and being rotated by said fly wheel in a circular motion to define a circular pattern at and beyond said head mount portion;
- C. said actuating rod being attached by oppositely disposed pins to ring means at the head mount portion, the ring means being in turn attached by a pair of pins to said head mount, said pins providing sufficient up and down motion to permit said actuating rod to revolve therein;
- and
- D. a toothbrush having a stem which is interchangeably attached to said joint portion, having bristles which remain in alignment with teeth striations and interdental spaces of the teeth when turning in the circular pattern defined by said actuating rod.
3 more elements
Dependencies are inferred from the claim text.