Patents by Inventor Pattira Mokawan

Pattira Mokawan 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).

  • HDA vacuum cleaning machine for manufacturing of HDD
    Patent number: 8840730
    Abstract: A machine for cleaning a head-disk assembly (HDA) of a hard disk drive (HDD) includes a nest that seals the HDA between an upper and lower portion during cleaning. An inlet port receives a gas and an exhaust port exhausts the gas and entrained particles. A shock drive delivers mechanical shocks to the nest and the HDA while the gas is flowing through the HDA. A blower may circulate the gas from the exhaust port to the inlet port. A filter may be coupled to the inlet port. The HDA nest may be movable along an axis of the mechanical shocks delivered by the shock drive. A blow tube may deliver gas to a screw hole and a coaxial vacuum tube may rest against a surface around the screw hole to encapsulate the blow tube during cleaning and remove the gas and particles from the screw hole.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 23, 2014
    Assignee: Western Digital Technologies, Inc.
    Inventors: Pranee Thonghara, Lie Dhani Hastama, Pattira Mokawan
  • HDA vacuum cleaning machine for manufacturing of HDD
    Patent number: 8387631
    Abstract: A machine for cleaning a head-disk assembly (HDA) of a hard disk drive (HDD) includes a nest that seals the HDA between an upper and lower portion during cleaning. An inlet port receives a gas and an exhaust port exhausts the gas and entrained particles. A shock drive delivers mechanical shocks to the nest and the HDA while the gas is flowing through the HDA. A blower may circulate the gas from the exhaust port to the inlet port. A filter may be coupled to the inlet port. The HDA nest may be movable along an axis of the mechanical shocks delivered by the shock drive. A blow tube may deliver gas to a screw hole and a coaxial vacuum tube may rest against a surface around the screw hole to encapsulate the blow tube during cleaning and remove the gas and particles from the screw hole.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: March 5, 2013
    Assignee: Western Digital Technologies, Inc.
    Inventors: Pranee Thonghara, Lie Dhani Hastama, Pattira Mokawan