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:
May. 23, 1989
Filed:
Dec. 22, 1987
Gerald J Kosarko, Pavilion, NY (US);
Rodney D Wagner, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A ceramic stabilizer is shown for minimizing the drag experienced in a magnetic interface between the stabilizer and a rapidly moving pliable magnetic disk. The stabilizer includes a stabilizing block with an opening through which a magnetic head protrudes for engagement with the disk. A flat, circumferential air bearing surface on the ceramic block surrounds the opening adjacent the disk for generating coupling forces that deform the disk out of its nominal plane and into intimate contact with a transducing gap on the head. The air bearing surface possesses an RMS surface roughness of at least 10 Angstroms because of its ceramic composition. The advancing disk interacts with the roughed air bearing surface of the stabilizer to generate a microscopic turbulence therebetween which functions as a 'lubricant' to lower drag, and thereby to lower current draw on the motor rotating the disk. A preferred ceramic material is barium titanate.