Patents by Inventor Daniel Cromwell

Daniel Cromwell 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: 5506758
    Abstract: A circuit board insertion and extraction apparatus. The present invention is a circuit board inserter and extractor apparatus particularly suited for use with circuit boards utilizing high insertion force connectors requiring in excess of 50 lbs of force. The handle of the inserter/extractor has novel insertion and extraction surfaces which cooperate with corresponding surfaces fabricated as part of a card guide. As the circuit board is inserted into the card guide, the handle is automatically positioned so that the user can press the bottom of the handle to insert the circuit board. The handle and card guide interface is designed to provide a large positive force to extract the circuit board from the card guide until the circuit board is unseated from the associated high insertion force connectors. Additionally, the present invention is advantageously designed to eliminate the need for fixtures or separate hardware to install the handle onto the circuit board thereby saving assembly line time and money.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 9, 1996
    Assignee: Hewlett-Packard Company
    Inventor: S. Daniel Cromwell
  • Patent number: 5502622
    Abstract: A retaining clip to retain a circuit board insertion/extraction handle on a circuit board. The present invention is a retaining clip which is part of a circuit board inserter and extractor apparatus particularly suited for use with circuit boards utilizing high insertion force connectors requiring in excess of 50 lbs of force. The handle of the inserter/extractor has novel insertion and extraction surfaces which cooperate with corresponding surfaces fabricated as part of a card guide. As the circuit board is inserted into the card guide, the handle is automatically positioned so that the user can press the bottom of the handle to insert the circuit board. The handle and card guide interface is designed to provide a large positive force to extract the circuit board from the card guide until the circuit board is unseated from the associated high insertion force connectors. The clip is constructed of stainless steel and formed into a generally flat "U" shape.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: March 26, 1996
    Assignee: Hewlett-Packard Company
    Inventor: S. Daniel Cromwell