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:
Sep. 07, 1976
Filed:
Nov. 07, 1974
Donald L Burdorf, Newport Beach, CA (US);
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Abstract
An apparatus for guiding a span of high speed magnetic tape past the recording/transducing head which utilizes a low volume lubricating air film to virtually eliminate the sliding friction between the guide itself and the magnetic tape. The periphery of the guide is slightly concave to permit the formation of an air film while permitting the tape to retain a desirable flat cross section and also facilitating a seal between the edges of the tape and the convex peripheral surface of the guide to isolate the lubricating air film from the atmosphere in order to reduce the supply of compressed air required. The design also enables the utilization of boundary layer air being dragged along by the tape to supplement the compressed air supply to further reduce the volume of air required.