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:
Jun. 23, 1981
Filed:
Jan. 23, 1978
James Bjordahl, Arcadia, CA (US);
BASF Aktiengesellschaft, Rheinland-Pfalz, DE;
Abstract
Apparatus for accurately positioning a transducer head relative to parallel tracks on a recording medium such as magnetic tape. The apparatus includes a frame having a guide to direct the tape along a horizontal path past the transducer head, and a cam mounted for rotation on the frame. The cam has a cylindrically shaped upstanding portion in which a series of graduated planar steps is formed, each such step corresponding to a separate track on the tape. The apparatus further includes a lever having one end pivotally mounted to the frame and a remote end positioned to bear on one of the steps of the cam, and a platform assembly which carries the transducer head and which bears on a mid-portion of the lever. Rotation of the cam raises or lowers the remote end of the lever by a controllable number of steps, and thereby raises or lowers the transducer head by a corresponding but lesser amount, to align it with a selected track on the tape. Fine adjustment of the alignment of the transducer head with respect to the center of a track on the tape is accomplished by a mechanism for movement of the relative location of the pivoted end of the lever.