Patents by Inventor Joseph A. Perlas

Joseph A. Perlas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of imbalance correction using a grooved disk clamp
    Patent number: 9129639
    Abstract: A disk clamp that can engage a disk hub to couple a disk media to a disk hub, the disk clamp having a body portion, and a groove formed in a surface of the body portion and extending at least in a circumferential direction substantially parallel to at least a portion of the circumference of the disk clamp; and a balance weight installed in the groove formed in the surface of the disk clamp, the balance weight having a quantity of material applied in the groove. A disk drive assembly using the disk hub and a method of correcting a drive imbalance using the disk hub.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: September 8, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Joseph A. Perlas, Jambunathan Vangal-Ramamurthy
  • Device for faulty item rejection
    Patent number: 9114431
    Abstract: A device may comprise a gripper defining a plurality of openings, each being configured to selectively receive, retain and release an item using a vacuum. One or more sensors may be associated with the plurality of openings, and may be configured to detect a faulty item received in the opening associated therewith. An item receiving structure may be configured to receive items released by the gripper when one or more of the sensors detects that one or more of the received items is faulty. An item receptacle may be configured to receive a plurality of items, and a vacuum chute may be configured to convey items received in the item receiving structure away from the gripper and into the item receptacle under a vacuum force.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: August 25, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Joseph A. Perlas, Dean Albert Tarrant
  • Method of imbalance correction using a grooved disk clamp
    Patent number: 8780491
    Abstract: A disk clamp that can engage a disk hub to couple a disk media to a disk hub, the disk clamp having a body portion, and a groove formed in a surface of the body portion and extending at least in a circumferential direction substantially parallel to at least a portion of the circumference of the disk clamp; and a balance weight installed in the groove formed in the surface of the disk clamp, the balance weight having a quantity of material applied in the groove. A disk drive assembly using the disk hub and a method of correcting a drive imbalance using the disk hub.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: July 15, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: Joseph A. Perlas, Jambunathan Vangal-Ramamurthy