Patents by Inventor David K. Rayna

David K. Rayna 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).

  • Method and apparatus for automatically testing a railroad interlocking
    Patent number: 7711511
    Abstract: A railroad signal system interlocking is automatically tested. A control point interface corresponding to a predetermined function of the interlocking has an isolated section and a control section. The isolated section is connected with the interlocking and has a normal, inactivated state during operation of the interlocking, and an activated state for testing the interlocking by detecting an electrical characteristic representing the status of the predetermined function executed by the interlocking. The control section drives the isolated section to its activated state and receiving an output from the isolated section in response to the detected electrical characteristic, and delivers a status report.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 4, 2010
    Assignee: Ultra-Tech Enterprises, Inc.
    Inventors: Joseph C. Winkler, Paul J. Galburt, Donald P. Crosby, David K. Rayna, Christopher V. Traynor, George T. Briechle
  • Method and apparatus for automatically testing a railroad interlocking
    Publication number: 20080288202
    Abstract: A railroad signal system interlocking is automatically tested. A control point interface corresponding to a predetermined function of the interlocking has an isolated section and a control section. The isolated section is connected with the interlocking and has a normal, inactivated state during operation of the interlocking, and an activated state for testing the interlocking by detecting an electrical characteristic representing the status of the predetermined function executed by the interlocking. The control section drives the isolated section to its activated state and receiving an output from the isolated section in response to the detected electrical characteristic, and delivers a status report.
    Type: Application
    Filed: February 29, 2008
    Publication date: November 20, 2008
    Inventors: Joseph C. Winkler, Paul J. Galburt, Donald P. Crosby, David K. Rayna, Christopher V. Traynor, George T. Briechle
  • Method and apparatus for automatically testing a railroad interlocking
    Patent number: 7363187
    Abstract: A railroad signal system interlocking is automatically tested. A control point interface corresponding to a predetermined function of the interlocking has an isolated section and a control section. The isolated section is connected with the interlocking and has a normal, inactivated state during operation of the interlocking, and an activated state for testing the interlocking by detecting an electrical characteristic representing the status of the predetermined function executed by the interlocking. The control section drives the isolated section to its activated state and receiving an output from the isolated section in response to the detected electrical characteristic, and delivers a status report.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: April 22, 2008
    Assignee: Ultra-Tech Enterprises, Inc.
    Inventors: Joseph C. Winkler, Paul J. Galburt, Donald P. Crosby, David K. Rayna, Christopher V. Traynor, George T. Briechle