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:
Mar. 11, 1986
Filed:
Nov. 21, 1984
Applicant:
Inventor:
Leonid I Maizenberg, Chicago, IL (US);
Assignee:
Sybron Corporation, Rochester, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433126 ; 279 / ;
Abstract
A dental handpiece head having a bur-gripping mechanism which includes a spring-loaded ball carrier urged by the spring into operative engagement with a tapered ramp which in turn forces the several balls into clamping engagement with the shank of a dental bur positioned in the central bore of the ball carrier. The balls bite into the shank providing positive engagement. Downward force applied to the ball carrier against the spring, by a cam lever or by a pushbutton, releases the engagement.