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:
Dec. 13, 1988
Filed:
Mar. 25, 1986
Applicant:
Inventors:
Donald K Rex, Highland Beach, FL (US);
James P Ruse, Charlotte, NC (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
226 74 ; 226 76 ;
Abstract
A feed mechanism for moving a web is disclosed. It includes a means for engaging the web that has a plurality of uniformly spaced drive pins for extending through and engaging web perforations. It also includes a means for guiding the web onto the drive pins, such as a door, and it includes a guiding surface that extends below the upper end of the pins. The guiding surface includes a static protrusion that extends below the guiding surface and urges the web and its associated perforation down onto the drive pin in that portion of the tractor where the drive pins are inserted into the web perforations.