Toothbrushes with a replaceable head having a threaded connection
First Claim
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1. An electric toothbrush, comprising:
- a housing defining a hollow interior having a motor and a first shaft disposed therein that is operatively connected to said motor, said housing having an engagement member extending along a longitudinal axis of said housing from an end thereof, said engagement member including a first thread helically extending about said engagement member; and
a brush head having a movable bristle carrier at a first end of said brush head and a second shaft operatively connected to said movable bristle carrier, said brush head having a receiving region at a second end of said brush head opposite said first end, said receiving region having an engagement surface with a second thread helically extending along said annular engagement surface, wherein said first thread and said second thread form a threaded connection that releasably couples said brush head to said handle when one of said handle or said brush head is rotated about said longitudinal axis.
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Abstract
A toothbrush having a replaceable head attachment is disclosed. The toothbrush includes a brush head that is releasably engaged to a handle portion and utilizes a threaded engagement configuration between the two components.
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Citations
18 Claims
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1. An electric toothbrush, comprising:
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a housing defining a hollow interior having a motor and a first shaft disposed therein that is operatively connected to said motor, said housing having an engagement member extending along a longitudinal axis of said housing from an end thereof, said engagement member including a first thread helically extending about said engagement member; and
a brush head having a movable bristle carrier at a first end of said brush head and a second shaft operatively connected to said movable bristle carrier, said brush head having a receiving region at a second end of said brush head opposite said first end, said receiving region having an engagement surface with a second thread helically extending along said annular engagement surface, wherein said first thread and said second thread form a threaded connection that releasably couples said brush head to said handle when one of said handle or said brush head is rotated about said longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electric toothbrush, comprising:
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a housing defining a hollow interior having a motor and a first shaft disposed therein that is operatively connected to said motor, said housing having an engagement member extending along a longitudinal axis of said housing from an end thereof, said engagement member including a first thread helically extending about said engagement member;
a brush head having a movable bristle carrier at a first end of said brush head and a deflectable second shaft operatively connected to said movable bristle carrier, said brush head having a receiving region at a second end of said brush head opposite said first end, said receiving region having an engagement surface with a second thread helically extending along said annular engagement surface, wherein said first thread and said second thread form a threaded connection that releasably couples said brush head to said handle when one of said handle or said brush head is rotated about said longitudinal axis; and
wherein one of said handle and said brush head is rotated between about 180° and
about 540°
to fully engage said first thread and said second thread. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification