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:
Feb. 22, 1983
Filed:
Mar. 16, 1981
Applicant:
Inventor:
Thomas W Howard, Harrisburg, NC (US);
Assignee:
IBM Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
355 50 ; 355 23 ; 355 65 ; 355 66 ; 355 51 ;
Abstract
A microfilm camera employs a reciprocating lens to optically arrest motion of documents traveling in a high-speed stream for photographic exposure onto stationary, incrementally advanced photographic film. The reciprocation of the lens is controlled by a closed loop servo system. To enhance performance of the servo system, the lens is supported by a four-bar linkage comprising relatively stiff light-weight arms interconnected by crossed leaf spring hinges.