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:
Feb. 10, 1981
Filed:
Aug. 08, 1979
Stawomir P Kleczkowski, Boulder, CO (US);
Rupert F Ross, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Method and apparatus for opening stacked disk memory members arranged in a pack for co-rotation and having substantial freedom of axial movement relative to one another, the opening being accomplished by engaging the disk pack with drive means having axially extending pins of varying length, and of a predetermined pattern with the increments of pin length variation being substantially equal to the desired openings between the disk members, and the disk memory members having openings defined therein with corresponding patterns adjacent disk memory members having progressively fewer openings to receive pins of a predetermined pattern with the result that all pins of a predetermined length bear upon a disk memory member and axially separate it from the adjacent disk memory member, thereby providing an opening at the termini of each set of pins of common length.