Power toothbrush
First Claim
1. A power toothbrush comprising:
- a case;
a drive motor operable to effect rotary motion mounted inside said case;
a drive shaft mounted inside said case in such a way that said drive shaft is free to move in an axial direction;
a first transmission mechanism for converting the rotary motion of said drive motor into a reciprocating motion and transmitting the reciprocating motion to said drive shaft;
an attachment carried by said drive shaft;
a rotary brush member mounted on said attachment; and
a second transmission mechanism for converting the reciprocating motion of said attachment in said axial direction into a rotary motion and transmitting this rotary motion to said rotary brush member.
2 Assignments
0 Petitions
Accused Products
Abstract
A power toothbrush has a superior brushing effect achieved by a brush member which is given a reciprocal motion in the axial direction while at the same time the brush member itself is given a rotary motion and which has a simple construction and is of low cost. A drive shaft is mounted in a casing in such a way that it is free to move in the axial direction. The rotation of a drive motor mounted inside the casing is converted into a reciprocating motion and transmitted to the drive shaft by a first transmission mechanism. A rotary brush member is rotatably mounted on the end of an attachment connected to the drive shaft, and the reciprocating motion, in the axial direction, of the attachment is converted into a rotary motion and transmitted to the rotary brush member by a second transmission mechanism.
112 Citations
11 Claims
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1. A power toothbrush comprising:
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a case; a drive motor operable to effect rotary motion mounted inside said case; a drive shaft mounted inside said case in such a way that said drive shaft is free to move in an axial direction; a first transmission mechanism for converting the rotary motion of said drive motor into a reciprocating motion and transmitting the reciprocating motion to said drive shaft; an attachment carried by said drive shaft; a rotary brush member mounted on said attachment; and a second transmission mechanism for converting the reciprocating motion of said attachment in said axial direction into a rotary motion and transmitting this rotary motion to said rotary brush member. - View Dependent Claims (2, 3, 4)
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5. A power toothbrush which simultaneously provides a reciprocatory and rotary brushing action comprising:
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a case; a power driven means in said case comprising a reciprocable drive member reciprocable relative to said case; a rotary brush means carried by said drive member and reciprocable with said drive member; an elongated member fixed to said case and extending to a position juxtaposed to said rotary brush means; and operable means on said elongated member and on said rotary brush means operably engaged to effect rotation of said rotary brush means as said reciprocable drive member effects reciprocation of said rotary brush means, whereby said rotary brush means simultaneously provides a reciprocatory and rotary brushing action. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification