Motorized toothbrush tip having inner and other heads counter around different axes
First Claim
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1. A brush tip for a motorized toothbrush, comprising:
- a housing having first and second openings, defining first and second axes of rotation, respectively, and a cavity;
a first brush head supported by said housing in said first opening for rotation about said first axis of rotation;
a second brush head supported by said housing in said second opening for rotation about said second axis of rotation, said second brush head encircling said first brush head;
means for counter rotating said first and second brush heads around said first and second axes of rotation, respectively; and
an elongated shaft supported by said housing in said cavity for rotation about a shaft axis, engaging said second brush head to drive said first and second brush heads.
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Abstract
A toothbrush tip for a motorized toothbrush with a first brush head and a second brush head. The second brush head encircles the first brush head. The first and second brush heads has different axes of rotation. The first and second brush heads are driven by an elongated shaft. The shaft engages the second brush head. Interactive gear teeth associated with each first and second brush heads allows the first and second brush heads to rotate at opposite direction, upon being driven by the shaft.
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Citations
43 Claims
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1. A brush tip for a motorized toothbrush, comprising:
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a housing having first and second openings, defining first and second axes of rotation, respectively, and a cavity; a first brush head supported by said housing in said first opening for rotation about said first axis of rotation; a second brush head supported by said housing in said second opening for rotation about said second axis of rotation, said second brush head encircling said first brush head; means for counter rotating said first and second brush heads around said first and second axes of rotation, respectively; and an elongated shaft supported by said housing in said cavity for rotation about a shaft axis, engaging said second brush head to drive said first and second brush heads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 43)
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37. A brush tip for a motorized toothbrush, comprising:
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a housing having first and second openings, defining first and second axes of rotation, respectively, and a cavity; a first brush head supported by said housing in said first opening for rotation about said first axis of rotation, said first brush head comprises a generally cylindrical body having a curve side wall, along a portion of said curve side wall is a first set of elongated gear teeth having axes parallel to the central axis of said cylindrical body; a second brush head supported by said housing in said second opening for rotation about said second axis of rotation, said second brush head encircling said first brush head, said second brush head comprises a generally elliptic cylindrical body having a generally central and elliptical aperture where said first rush head nests therein and a concave side wall in said elliptical aperture, along a portion of said concave side wall is a second set of elongated gear teeth having axes parallel to the central axis of said elliptic cylindrical body; and an elongated shaft supported by said housing in said cavity for rotation about a shaft axis, engaging said second brush head to drive said first and second brush heads; wherein each of said first and second set of gear teeth having equal pitch circle radii and interact with each to counter-rotate and accelerate said first and second brush heads at equal angular acceleration.
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38. A brush tip for a motorized toothbrush, comprising:
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a housing having first and second openings, defining first and second axes of rotation, respectively, and a cavity; a first brush head supported by said housing in said first opening for rotation about said first axis of rotation, said first brush head comprises a generally cylindrical body having a curve side wall, along a portion of said curve side wall is a first set of elongated gear teeth having axes parallel to the central axis of said cylindrical body; a second brush head supported by said housing in said second opening for rotation about said second axis of rotation, said second brush head encircling said first brush head, said second brush head comprises a generally elliptic cylindrical body having a generally central and elliptical aperture where said first rush head nests therein and a concave side wall in said elliptical aperture, along a portion of said concave side wall is a second set of elongated gear teeth having axes parallel to the central axis of said elliptic cylindrical body; and an elongated shaft supported by said housing in said cavity for rotation about a shaft axis, engaging said second brush head to drive said first and second brush heads; wherein each of said first and second set of gear teeth having different pitch circle radii and interact with each to counter-rotate and accelerate said first and second brush heads at different angular acceleration.
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39. A brush tip for a motorized toothbrush having a toothbrush motor, comprising:
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a first set of cleaning members extending from a first brush head, distal ends of said first set of cleaning members forming a circular pattern; a second set of cleaning members extending from a second brush head, distal ends of said second set of cleaning members forming a non-circular pattern, said second brush head encircling said first brush head; and means for counter-rotating said first and second sets of cleaning members about first and second axes of rotation, respectively, in response to motion produced by said toothbrush motor. - View Dependent Claims (40, 41, 42)
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Specification