Patents by Inventor Glenn P. Woodhouse

Glenn P. Woodhouse 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).

  • Fixture for alignment of vacuum nozzles on semiconductor manufacturing equipment
    Patent number: 5539992
    Abstract: An apparatus for measuring and correcting the straightness of a hollow vacuum nozzle for semiconductor assembly equipment comprises a collet which can rotate over 360.degree. and holds the nozzle. An indicator, such as a dial indicator, has a tip which conformally and continuously engages the nozzle so that as the collet and nozzle are rotated the indicator tip rides on the nozzle. Any horizontal movement of a bent nozzle is shown on the indicator. The bend in the nozzle can then be repaired and rechecked while the nozzle is installed in the collet.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: July 30, 1996
    Assignee: Micron Electronics, Inc
    Inventor: Glenn P. Woodhouse
  • Automatic optical pick and place calibration and capability analysis system for assembly of components onto printed circuit boards
    Patent number: 5537204
    Abstract: A method and apparatus for calibrating and performing statistical capability analysis of a pick-and-place machine comprise loading a glass fiducial plate onto a workholder of a pick-and-place machine, loading a glass slide onto a part placement nozzle of the pick-and-place machine, and placing the glass slide onto the plate. Alignment of a chrome fiducial on the fiducial plate with a chrome target window on the slide is examined. Responsive to the alignment of the target and the fiducial, key calibration codes in calibration software of the pick-and-place machine are adjusted. Once calibration is complete, multiple placement cycles using the glass fiducial plate and glass slides are performed to determine the statistical placement capability of the pick-and-plate equipment.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: July 16, 1996
    Assignee: Micron Electronics, Inc.
    Inventor: Glenn P. Woodhouse
  • Fixture for alignment of vacuum nozzles on semiconductor manufacturing equipment
    Patent number: 5433013
    Abstract: An apparatus for measuring and correcting the straightness of a hollow vacuum nozzle for semiconductor assembly equipment comprises a collet which can rotate over 360.degree. and holds the nozzle. An indicator, such as a dial indicator, has a tip which conformally and continuously engages the nozzle so that as the collet and nozzle are rotated the indicator tip rides on the nozzle. Any horizontal movement of a bent nozzle is shown on the indicator. The bend in the nozzle can then be repaired and rechecked while the nozzle is installed in the collet.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: July 18, 1995
    Assignee: Micron Custom Manufacturing Services, Inc.
    Inventor: Glenn P. Woodhouse