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:
Jan. 27, 1981
Filed:
Mar. 29, 1979
Applicant:
Inventors:
Anthony Ciavattoni, Staten Island, NY (US);
Jack Flynn, Monmouth, NJ (US);
Josef Ujvary, Kingston, NJ (US);
Assignee:
Pennwalt Corporation, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
2504 / ;
Abstract
Film drive mechanism for use with a panoramic X-ray machine which provides continuous and discontinuous radiographic images of dental arch areas of a shifting patient. The mechanism utilizes electromagnetic clutches, linkage structures and cams for varying the rotational speed of a film drive shaft in accordance with the mode of radiographing selected, i.e., continuous or discontinuous. The film drive shaft controls rotation of a drum which has the film wrapped therearound.