Dental handpiece

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12161516
APP PUB NO 20220039913A1
SERIAL NO

17394441

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A dental handpiece includes a barrel, an air turbine, a central shaft, a bearing and a seal. The barrel includes an axial open end. The air turbine is rotatably provided in the barrel. The central shaft is secured to the air turbine to rotate with the air turbine. The bearing is mounted in the barrel and supports the central shaft for rotation. The seal is trumpet-shaped and arranged between the open end of the barrel and the bearing. The seal includes a sealing portion sleeved over an outer cylindrical surface of the central shaft. The sealing portion is deformable to separate from the outer cylindrical surface of the central shaft or closely contact the outer cylindrical surface of the central shaft depending on a pressure difference between interior and exterior of the barrel.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
BEYES DENTAL CANADA INC55 LAURIER DR MORRISBURG K0C 1X0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Changming Guangzhou, CN 5 1
Li, Min Guangzhou, CN 751 7676
Yang, Hua Toronto, CA 263 2514

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