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:
Jan. 09, 1990
Filed:
Jul. 28, 1988
Boris A Shtipelman, Rochester, NY (US);
David L White, Penfield, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Apparatus for controlling the radial position of a transducer (e.g. an optical, magneto-optic, or magnetic write/read head) relative to a spinning disk (e.g. a data storage disk) comprises a transducer-supporting radial access arm which is mounted via a rotary bearing for pivotal movement about a spinning support shaft. The continuous rotary movement of the support shaft dramatically reduces stick-slip friction in the bearings separating the support shaft and the access arm, thereby reducing start-up torque and enabling more precise positioning of the transducer relative to the disk. Moreover, it prolongs the life of the rotary bearing in that it eliminates so-called Brinelling (wearing of the bearing balls or rollers due to small oscillations about the same point).