The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1984
Filed:
Apr. 13, 1982
Saburou Takeshita, Tokyo, JP;
Micron Co., Ltd., Tokyo, JP;
Abstract
An air-driven dental scaler is provided with a vibrator assembly which comprises a rigid vibrator body having an inner disk-like chamber in which a disk-like rotor is received with a small gap between it and the chamber. The vibrator body is provided with a plurality of inlet ports which are arranged in such a manner that a jet of air impinges upon the cylindrical outer surface of the rotor in a substantially tangential direction to cause the rotor to rotate. As the rotor rotates, it strikes or rolls on the side walls of the chamber to impart a vibratory movement to the vibrator body, which movement is transmitted through a shaft to a scaler tip. The air leaves the chamber through an exhaust port provided, preferably, in one of the side walls of the chamber. The rotor is, preferably, provided with a central opening to enhance the exhaust efficiency.