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:
Jul. 17, 1979
Filed:
Apr. 25, 1978
Applicant:
Inventor:
William R Wray, Sudbury, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
360 90 ; 352 27 ;
Abstract
An audio drive system having a pinch roller mounted in slightly trailing arrangement to the point of the initial engagement of the audio tape with the capstan so that, as the audio tape passes from the pinch roller and capstan, it is displaced from the original tape path to curl into a free loop and provide isolation between the continuous motion of the audio tape and the intermittent advancement for photographic motion.