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Electric toothbrush mechanism

  • US 7,024,718 B2
  • Filed: 08/02/2002
  • Issued: 04/11/2006
  • Est. Priority Date: 08/02/2002
  • Status: Expired due to Fees
First Claim
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1. A brushing head attached to or formed integrally with an electric toothbrush handle, comprising:

  • a casing,a rotary drive shaft extending within the casing and comprising a radially offset crank portion,a linear guide track extending in a direction across the drive shaft and at an acute angle with respect to the longitudinal extent of the drive shaft,a tuft block mounted to the casing and interacting with the offset crank portion and the guide track to reciprocate linearly upon rotation of the drive shaft, wherein the tuft block includes a slider received by the guide track, and the guide track and slider each have a cross-sectional shape comprising a stem and a flange, andwherein the stem of the slider is received within the stem of the guide track and the flange of the slider is received within the flange of the guide track.

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