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:
Dec. 25, 1984
Filed:
Jan. 21, 1980
Claus Kleesattel, Rego Park, NY (US);
George E Warrin, Merrick, NY (US);
Cooper LaserSonics, Inc., Santa Clara, CA (US);
Abstract
A device for rotating a member at relatively low rotational speeds is particularly useful for rotating a brush-type tooth polisher on an insert for an ultrasonic dental prophylaxis unit. The device comprises a vibrator which ultrasonically vibrates longitudinally and has a driving tip end portion which converts the longitudinal vibrations into elliptical motion. The elliptically moving driving tip tangentially engages at least one rotatable roller during an arc of the elliptical motion to rotate the roller. A speed reduction device couples the roller to a rotary polisher to rotate the polisher at a reduced speed. Preferably, the speed reduction device also isolates the axial and radial thrust applied, in use, to the polisher from the roller which receives some radial thrust from the vibrator. This reduces the bearing requirements for the polisher and roller. Also preferably, the roller, speed reduction and polisher elements are assembled as a unit separable from the vibrator for ready replacement.