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. 04, 1985
Filed:
Jul. 27, 1983
Applicant:
Inventors:
Shozo Nakayama, Kyoto, JP;
Sekiya Ogino, Kyoto, JP;
Assignee:
Kabushiki Kaisha Morita Seisakusho, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433132 ; 384112 ;
Abstract
An improvement in an air bearing device of an air drive, air journal type dental handpiece is disclosed, wherein a radial gap for journaling a rotor in the radial direction comprises partially enlarged gaps which, serving as air pools, improve the handpiece's cutting performance and prevent abnormal noise and vibration of the turbine blade caused by the whirl phenomenon.