Patents by Inventor Randall P. Keller

Randall P. Keller 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).

  • Apparatus and system for controlling a squib firing device
    Patent number: 7154732
    Abstract: A squib firing device is constructed to test and fire a squib load being applied to the squib firing device. A power supply of the squib firing device conditionally stores and discharges a squib firing power, which is a function of an analog OR of a first voltage from an external power source and a second voltage from a battery source of the squib firing device. When the squib firing power is being stored by the power supply, the squib firing device establishes a flow of a squib testing current through the applied squib load to thereby detect a resistance of squib load. When the squib firing power is being discharged by the power supply, the squib firing device establishes and regulates a flow of a squib firing current through the applied squib load to thereby fire squib load.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 26, 2006
    Assignee: The Boeing Company
    Inventors: David D. Bennett, Michael E. Ernst, Randall P. Keller, Douglas S. York
  • Apparatus and system for controlling a squib firing device
    Publication number: 20040196615
    Abstract: A squib firing device is constructed to test and fire a squib load being applied to the squib firing device. A power supply of the squib firing device conditionally stores and discharges a squib firing power, which is a function of an analog OR of a first voltage from an external power source and a second voltage from a battery source of the squib firing device. When the squib firing power is being stored by the power supply, the squib firing device establishes a flow of a squib testing current through the applied squib load to thereby detect a resistance of squib load. When the squib firing power is being discharged by the power supply, the squib firing device establishes and regulates a flow of a squib firing current through the applied squib load to thereby fire squib load.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 7, 2004
    Applicant: THE BOEING COMPANY
    Inventors: David D. Bennett, Michael E. Ernst, Randall P. Keller, Douglas S. York