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:
Jun. 12, 1990
Filed:
Feb. 24, 1989
John P Ross, Cupertino, CA (US);
Conner Peripherals, Inc., San Jose, CA (US);
Abstract
A method of centering a disk on a disk drive motor with respect to the rotational axis of the motor and/or for balancing the disk to reduce operating vibration of the disk and motor assembly. The centering/balancing method is performed by placing a contact element in contact with the outer diameter of the disk and moving the contact element towards the rotational axis of the motor until the inner diameter of the disk contacts a portion of the hub of the motor which protrudes into the center hole of the disk. Then, the disk is rotated while the contact element is simultaneously moved away from the rotational axis of the motor at a rate related to the rotational speed of the disk. An apparatus for performing the centering/balancing methods includes an element for contacting the outer diameter of the disk, and a mechanism for moving the contact element towards the rotational axis of the motor until the inner diameter of the disk contacts the portion of the hub protruding into the hole in the disk and for simultaneously rotating the disk and moving the contact element away from the rotational axis of the motor at a rate related to the rotational velocity of the disk.