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. 15, 1981
Filed:
Jul. 18, 1980
Donald L Burdorf, Newport Beach, CA (US);
James Bjordahl, Arcadia, CA (US);
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
An apparatus for guiding a span of high-speed magnetic recording tape past a recording/transducing head. Low volume pressurized air is utilized to lift the tape off of the guide assembly thereby eliminating sliding friction between the apparatus and the tape. The periphery of the guide is provided with a means to facilitate the formation of an air seal with the edges of the tape thereby substantially isolating the pressurized air from the atmosphere. Air jets are provided at the tangent points where the tape enters and departs from the air guide so as to prevent the tape from touching any portion of the guide during the transport operation. The pressurized air emitted from the air jets located at the tangent point where the tape enters the guide forms a supporting boundary layer of air along the surface of the tape which is carried along by the tape across the guide.