Toothbrush with water jet
AssigneeAddway Engineering Limited
InventorKa Shing Wu
Life of this patent
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Abstract
An electric toothbrush includes a drive shaft that is reciprocated by a motor in a brush handle (not shown). The reciprocating movement is directly transferred to a piston that serves to pump water from a reservoir via a water passage to a water jet nozzle in the midst of brushes.
Claims4
An electric toothbrush with a water jet, the toothbrush comprising a handle, a shank, and a toothbrush head that incorporates the water jet, in which a motor is mounted in the handle and the toothbrush includes a reciprocating drive shaft extending along the shank to drive brushes in the brush head, including a water passage extending along the shank to connect a water supply to the water jet, and a pump in the shank for pumping water along the passage that is mechanically connected directly to the drive shaft.
Dependencies are inferred from the claim text.