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:
Aug. 20, 1985
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 ...
433129 ;
Abstract
In a dental handpiece, a drawback bur chuck actuable to open by a cam lever mounted atop the handpiece head and acting axially downward on the chuck against a spring which urges the chuck upward into clamping engagement with a bur shank when the cam lever is in its closed position. The cam lever is rotatable on the axis of the chuck to a position to suit the convenience of the user. The chuck is removable for cleaning and positive means are provided to prevent over travel of the chuck to thereby prevent its permanent deformation.