Patents by Inventor Richard J. Chapman

Richard J. Chapman 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).

  • Patent number: 6067866
    Abstract: The inventive fixture adapter has installed pneumatic actuators. Pneumatic connections for the actuators are made during installation of the adapter in the fixture. Thus, testing of a device can begin before the drawer is closed, and be completed while the drawer is being opened, thus saving cycle time. The adapter is removably connected to the drawer mechanism of the fixture, and thus can quickly and reliably be changed for a different adapter. All of the customization required for a particular device can be confined to the adapter, and thus the reset of the fixture can be made generic.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: May 30, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Russell S. Krajec, Richard J. Chapman
  • Patent number: 6047599
    Abstract: The inventive mechanism has an RF door separate from the drawer of an automatic testing machine fixture. The door is either attached to an adapter which holds a device that is to be tested, or attached to a peripheral portion of the fixture. Consequently, changing the adapter is simplified, and the likelihood of damage to the adapter is lowered. When the drawer is in a closed position, the door meshes with the fixture to provide an RF sealed area for RF testing a device.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: April 11, 2000
    Assignee: Hewlett Packard Company
    Inventors: Russell S. Krajec, Richard J. Chapman