Toothbrush and manufacturing method thereof
OwnerHideo Tomiyamainventor
Life of this patent
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Abstract
A toothbrush effective for removing plaque deposited on peripheral surfaces of adjacent teeth and the inner parts of teeth and massaging gums, comprising a rotary brush (5) formed into a roller shape by extending many bristles (6) radially outwardly from the outer peripheral surface of an annular unit (5a) provided at the center thereof with a shaft hole (5c) and a block handle (1) having at one end (1b) thereof a support shaft (4) for rotatably supporting the rotary brush (5).
Claims2
A method for making a toothbrush comprising a rotary brush, and a handle, wherein the rotary brush is formed into a roller shape by extending many bristles radially outwardly from the outer peripheral surface of an annular unit provided with a shaft hole at the center thereof, and is supported by a support shaft disposed in one end portion of the said handle, having the steps of bundling many bristles made of nylon, heating and melting one end of a bundle of bristles into a deposited portion, curving the bundle of bristles into an approximately arc shape and connecting such arc shaped bundles.
A toothbrush having a rotary brush and a handle, the rotary brush being formed into a roller shape by the process comprising:
- bundling many bristles made of nylon;
- heating and melting one end of the bundle of bristles into a deposited portion;
- curving the bundle of bristles into an approximately arc shape;
- and
- connecting such arc shaped bundles.
Dependencies are inferred from the claim text.