Replaceable head electric toothbrush and connection structure therefor
First Claim
Patent Images
1. An electric toothbrush comprising:
- an elongated body including a handle housing a motor, and a head having moving bristles, wherein the head is detachably connected to the handle and wherein the moving bristles are operatively connected to the motor; and
, a shaft assembly for the operatively connecting of the bristles and motor comprising first and second shafts respectively associated with the motor and bristles, wherein the first shaft includes a notch at an end portion and the second shaft includes a tab sized for reception in the notch, and wherein the second shaft is biased for selective angular movement towards the first shaft by a spring member for locking engagement between the tab and the notch upon operative attachment of the head to the handle.
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Accused Products
Abstract
An electric toothbrush comprising an elongated body portion and a head including a static portion and a moving portion, a handle, and an angled shaft between the head and the handle. The portion of the toothbrush containing the head is detachably connected to the portion of the toothbrush containing the handle. A shaft within the head is selectively connectable to a mating shaft within the handle by a cooperating notch and peg assembly biased into a locking position by a spring member disposed to bias the head shaft into the desired position.
273 Citations
22 Claims
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1. An electric toothbrush comprising:
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an elongated body including a handle housing a motor, and a head having moving bristles, wherein the head is detachably connected to the handle and wherein the moving bristles are operatively connected to the motor; and
,a shaft assembly for the operatively connecting of the bristles and motor comprising first and second shafts respectively associated with the motor and bristles, wherein the first shaft includes a notch at an end portion and the second shaft includes a tab sized for reception in the notch, and wherein the second shaft is biased for selective angular movement towards the first shaft by a spring member for locking engagement between the tab and the notch upon operative attachment of the head to the handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electric toothbrush with a replaceable head, wherein bristle movement in the head is effected by a reciprocating head shaft powered by a motor in a handle attached to the replaceable head, the toothbrush comprising:
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mating head and handle portions including a cooperating pin and guide slot for defining a fully attached disposition of the head on the handle by a press-and-twist operator action; and
,the head shaft disposed for locking engagement with a handle shaft operatively associated with the motor for communicating a desired reciprocating movement to the head shaft, wherein the head shaft is biased into the locking engagement by a spring member buttressed by a wall of the replaceable head when the head is in the fully attached disposition to engage the head shaft and urge the head shaft into a desired position relative to the handle shaft. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A replaceable head for reception onto an electric toothbrush handle, the toothbrush handle including a motor and motor shaft, the head comprising moving bristles and a drive shaft for communicating movement from the motor to the moving bristles;
- by an engagement between the motor shaft and the drive shaft and wherein the drive shaft is biased into a selected locking engagement of the motor shaft by a spring member that is buttressed against a side wall of a housing comprising the head and which is disposed to contact and urge the drive shaft into the locking engagement.
- View Dependent Claims (20, 21, 22)
Specification