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. 09, 1978
Filed:
Mar. 10, 1977
Daniel O Castrodale, Rochester, MN (US);
William J Pendy, Jr, Atlanta, GA (US);
William S Wentink, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A data storage apparatus having a thin flexible disk with magnetic recording surfaces on both faces and a carriage embracing the disk and carrying a pair of transducers in contact with opposite faces of the disk. Each of the transducers is mounted on a relatively weak gimbal spring. Relative rigid load arms bear on dimples located at the centers of the transducers to form universal joint connections with the transducers. The gimbal springs and universal joint connections allow the transducers to pitch and roll with wobbling movements of the flexible disk without movement of the load arms. The load arms are mounted on relatively stiff gimbal spring portions for applying a predetermined force to the transducers holding them in engagement with the disk while allowing yielding movement of the transducers in directions normal to the disk engaging faces of the transducers.