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:
Nov. 01, 1977
Filed:
Jun. 09, 1976
Applicant:
Inventors:
Robert H Trenkamp, Cleveland Heights, OH (US);
Gerald A Dissauer, South Euclid, OH (US);
Assignee:
Addressograph Multigraph Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G06K / ;
U.S. Cl.
CPC ...
235440 ; 235449 ; 360119 ; 235473 ;
Abstract
A wear compensating transducer is provided for reading optical and magnetic data from documents comprising a magnetic read head with a group of optical fibers passing through the reluctance gap and with the fiber ends disposed for wiping engagement with documents as they are read. The fiber ends define an optical reading aperture which remains substantially constant as the fiber ends wear with the contact surface of the magnetic head.