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:
Mar. 09, 1976
Filed:
Sep. 09, 1974
Bram Kool, Saratoga, CA (US);
Microform Data Systems, Inc., Mountain View, CA (US);
Abstract
A reader in which mircofiche film is manually moved in a rectilinear fashion by moving the film with respect to a holder in the first direction and moving the holder in a perpendicular second direction. The holder includes a light passage slot. A light source is mounted beneath the holder and an image projecting and enlarging optic is mounted in alignment with the source above the holder. A low friction annular spacer such as a Teflon O-ring rests directly on the film, is concentric with the optic and accurately spaces the optic from the film while maintaining film beneath the optics taut to assure proper image focusing. Film indexing is performed by moving the film while the optic supporting Teflon O-ring remains in contact with the film.