Patents by Inventor Arulmani Ethirajan

Arulmani Ethirajan 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).

  • Disk drive with helically mounted disk drive motor
    Patent number: 6574071
    Abstract: A disk drive receives a removable storage disk thereinto and has a frame and a disk motor helically mounted thereto for engaging the disk and applying a rotating force thereto. The motor has first threads integral therewith and the frame has second, mating threads integral therewith. The first and second threads interact to achieve helical movement.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: June 3, 2003
    Assignee: Iomega Corporation
    Inventors: Michael Paul Nelson, Arulmani Ethirajan
  • Inertial latch for head protection in a linear head actuator removable data storage drive
    Patent number: 6542336
    Abstract: An inertial latch for a linear actuator disk drive includes a carriage assembly carrying read/write heads linearly into and out of engagement with a recording medium. An arm rotating about a pivot has one end which engages the latch, and a counterweight on the other end of said arm. A key on the counterweight slides linearly in a slot as the carriage assembly moves linearly. The key fits into a keying portion of the slot which constrains said counterweight so that it cannot move if it is tilted by gravity or shock.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: April 1, 2003
    Assignee: Iomega Corporation
    Inventor: Arulmani Ethirajan
  • Motor module with mechanism for z-axis, spindle and hub load for disk drives with removable media
    Publication number: 20020186502
    Abstract: In a disk drive of the type in which a removable cartridge has a storage disk inserted therein, a spindle motor includes a spindle having a hub and a rotor cup. Only the spindle and the rotor cup are translated in the Z-axis into engagement of the hub with the disk as the cartridge is inserted into the drive. A cam and a lever which is rotated as the cartridge is inserted into the drive translate the spindle and the rotor cup in the Z-axis.
    Type: Application
    Filed: June 6, 2001
    Publication date: December 12, 2002
    Inventors: Arulmani Ethirajan, Lawrence Clayton
  • Inertial latch for head protection in a linear head actuator removable data storage drive
    Publication number: 20020181158
    Abstract: An inertial latch for a linear actuator disk drive includes a carriage assembly carrying read/write heads linearly into and out of engagement with a recording medium. An arm rotating about a pivot has one end which engages the latch, and a counterweight on the other end of said arm. A key on the counterweight slides linearly in a slot as the carriage assembly moves linearly. The key fits into a keying portion of the slot which constrains said counterweight so that it cannot move if it is tilted by gravity or shock.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 5, 2002
    Inventor: Arulmani Ethirajan
  • Disk drive with helically mounted disk drive motor
    Publication number: 20020118486
    Abstract: A disk drive receives a removable storage disk thereinto and has a frame and a disk motor helically mounted thereto for engaging the disk and applying a rotating force thereto. The motor has first threads integral therewith and the frame has second, mating threads integral therewith. The first and second threads interact to achieve helical movement.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 29, 2002
    Inventors: Michael Paul Nelson, Arulmani Ethirajan
  • Compliant motor rotor retainer
    Patent number: 6137200
    Abstract: A disk drive has a sleeve-bearing spindle motor having a rotor for rotating the disk of removable data storage cartridge. A retainer which is compliant in the direction of axial movement of the rotor stops the axial movement. The retainer is mounted on a moveable platform which mounts the disk cartridge as it is inserted into the drive. The retainer includes a cantilevered beam which is compliant in the direction of axial movement.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: October 24, 2000
    Assignee: Iomega Corporation
    Inventors: Arulmani Ethirajan, Dennis D. Ogden