Electric toothbrush with 3-dimensional brush head movements
First Claim
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1. An electric toothbrush including a brush head with bristles, an elongated main housing, a motion transmission link, motion generating means and motion transformation means, wherein:
- said brush head includes an elongated stem for connecting said brush head to said motion generating means via said motion transmission link, said motion generating means include means for generating reciprocating motions along a longitudinal axis, said motion transmission link transmits the reciprocating motions generated by said motion generating means along said longitudinal axis to said elongated stem of said brush head, said elongated stem is rotatable about said longitudinal axis while undergoing said reciprocating motions said longitudinal axis, and said motion transformation means include means to rotate said brush head about said longitudinal axis while said elongated stem is undergoing reciprocating longitudinal motions along said longitudinal axis.
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Abstract
An electrical toothbrush having a longitudinally reciprocating brush head which automatically rotates about the longitudinal axis while undergoing longitudinal brushing movements in order to align the brush head with the curvature of the gum for better dental care. An example of a drive mechanism together with appropriate motion transformation means to gradually turn the plane of the brush head about the longitudinal axis during a reciprocating longitudinal teeth brushing motion is described.
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Citations
12 Claims
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1. An electric toothbrush including a brush head with bristles, an elongated main housing, a motion transmission link, motion generating means and motion transformation means, wherein:
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said brush head includes an elongated stem for connecting said brush head to said motion generating means via said motion transmission link, said motion generating means include means for generating reciprocating motions along a longitudinal axis, said motion transmission link transmits the reciprocating motions generated by said motion generating means along said longitudinal axis to said elongated stem of said brush head, said elongated stem is rotatable about said longitudinal axis while undergoing said reciprocating motions said longitudinal axis, and said motion transformation means include means to rotate said brush head about said longitudinal axis while said elongated stem is undergoing reciprocating longitudinal motions along said longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification