Patents by Inventor Kenneth John Murphy

Kenneth John Murphy 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 interconnecting modules
    Patent number: 7917675
    Abstract: An industrial process control apparatus and method that includes a number of processors and a number of input/output modules. Each processor is connected to a plurality of the input/output modules by a unidirectional command line. Each input/output module is connected to a plurality of the processors by a unidirectional response line. The processors are arranged to issue an identifier request to all of the connected input/output modules and each input/output module is arranged to respond to the identifier request via the respective response line with a response that includes a unique identifier. Such a configuration allows each processor to identify the physical location of each respective input/output module.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: March 29, 2011
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Kenneth John Murphy, Linda Murphy, legal representative, Thomas Bruce Meagher, Philip John Agar, Ian David Wynne Jones, Gerald Robert Creech
  • Line frequency synchronization
    Patent number: 7747405
    Abstract: This invention relates to line frequency synchronisation for use in diagnostics for alternating current electrical circuits. The invention provides a method of synchronising measurement system frequency with an alternating current line frequency comprising the steps of: adjusting the frequency of the measurement system frequency using a frequency locked loop until the measurement system frequency is within a predetermined range of said alternating current line frequency; and when the measurement system frequency is within a predetermined range of said alternating current line frequency adjusting the phase and the frequency of the measurement system frequency using a phase and frequency locked loop.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: June 29, 2010
    Assignee: ICS TRIPLEX Technology Ltd.
    Inventors: Thomas Bruce Meagher, Kenneth John Murphy, Linda Murphy, legal representative
  • Overload protection method
    Patent number: 7729098
    Abstract: This invention relates to fault detection in electrical circuits. The invention provides a switch for a fault tolerant digital output module comprising: an output transistor pair for enabling and disabling an alternating output current; and a current limiter for clamping the output current to a predetermined maximum value.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: June 1, 2010
    Assignee: ICS Triplex Technology Limited
    Inventors: Thomas Bruce Meagher, Kenneth John Murphy, Linda M Murphy, legal representative
  • Overload protection method
    Patent number: 7688560
    Abstract: This invention relates to overload protection for a circuit driving a direct current (DC) load.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: March 30, 2010
    Assignee: ICS Triplex Technology Limited
    Inventors: Thomas Bruce Meagher, Kenneth John Murphy, Linda M. Murphy, legal representative
  • Method and Apparatus for Interconnecting Modules
    Publication number: 20090198348
    Abstract: An industrial process control apparatus and method that includes a number of processors and a number of input/output modules. Each processor is connected to a plurality of the input/output modules by a unidirectional command line. Each input/output module is connected to a plurality of the processors by a unidirectional response line. The processors are arranged to issue an identifier request to all of the connected input/output modules and each input/output module is arranged to respond to the identifier request via the respective response line with a response that includes a unique identifier. Such a configuration allows each processor to identify the physical location of each respective input/output module.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Inventors: Kenneth John Murphy, Linda Murphy, Thomas Bruce Meagher, Philip John Agar, Ian David Wynne Jones, Gerald Robert Creech