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. 24, 1980
Filed:
Mar. 08, 1978
Applicant:
Inventors:
Hiroshi Sugai, Kyoto, JP;
Shoji Nakayama, Kyoto, JP;
Assignee:
Kabushiki Kaisha Morita Seisakusho, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433132 ;
Abstract
This invention relates to a driving mechanism of an air bearing journaled handpiece for dental treatment, the mechanism being improved in that even when a load contrary to the direction of rotation of a tool shaft such as cutting of the teeth acts upon the tool shaft in a dental operation, rotation of the tool shaft does not stop because of load resistance but enables the heretofore, unmaterialized medium-speed cutting (hereinafter referred to as 'extension to medium-speed rotation') and makes it possible to obtain improved torque during high-speed rotation in addition to the extension to medium-speed rotation.