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. 10, 1991
Filed:
Feb. 07, 1990
William N Aldrich, Redwood City, CA (US);
Sidney D Miller, Mountain View, CA (US);
Ampex Corporation, Redwood City, CA (US);
Abstract
A pantographic head mount includes a pair of generally parallel flexible arms each solidly based at an inboard end and solidly affixed at an outboard end to a rigid structure that carries a magnetic head and is driven by an electromagnetic motor positioned to hold the head continuously normal to a recording medium while traversing across the medium. The structure is particularly adapted to resist torsional deformation. The two arms may be structured to have different resonant frequencies, and beating resonance between the arms during high-speed operation is avoided. However, in such case, the structures of the two arms are carefully matched to ensure that they still maintain the head continuously normal to the recording medium. In another embodiment, the arms have differently reticulated structural configurations to present incongruent but equal-area cross-sections at various points along the arm lengths. The two arms may also be formed with differently shaped transverse corrugations or unlike wavy shapes as viewed from the side.