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:
Mar. 18, 1980
Filed:
Jun. 06, 1978
Alfred Hasler, Mountain View, CA (US);
International Memories, Inc., Cupertino, CA (US);
Abstract
A disk drive unit having a housing provided with an upper region, a lower region, and a central region between the upper and lower regions. The upper region contains one or more rotatable memory disks, and the central region communicates with the upper region and contains a drive motor, the upper and central regions being closed to the atmosphere. The disks are coupled to a rotatable hub in the upper region and the hub has an improved jam screw for securing it to one end of the drive shaft of the drive motor so that the disks can be rotated at high speeds. One or more read-write heads can be used with each disk, respectively, and a linear motor coupled with each head moves the latter radially of the corresponding disk in accordance with control signals applied to the linear motor. The hub has vanes for drawing air by suction from the central region into the upper region, and a filter is in the path of flow of air from the upper region to the central region to remove foreign particles from air flow and thereby clean the air as the hub rotates. An impeller in the lower region is coupled to the opposite end of the shaft of the drive motor for directing cooling air toward and into contact with one or more circuit boards carried by the base adjacent to the lower region.