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:
Apr. 15, 1980
Filed:
Apr. 26, 1978
Applicant:
Inventor:
David G Stites, Elgin, IL (US);
Assignee:
Bell & Howell Company, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
353 23 ; 353 / ; 353 95 ;
Abstract
A pair of glass flats are mounted in a removable carrier frame assembly, which is adapted to be inserted into a microfilm reader/printer. Supports on the carrier frame may be rested upon a front panel of a reader/printer in order to facilitate an alignment and an insertion of the carrier. A solenoid controlled mechanical linkage normally holds the glass flats in an open position except when the film is actually being projected. Then, they close. Signals are sent back to indicate to the reader/printer whether the flats are opened or closed and to control it in response thereto.