Patents by Inventor Robert M. Koehl

Robert M. Koehl 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).

  • Pump Controller System and Method
    Publication number: 20110181431
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: December 20, 2010
    Publication date: July 28, 2011
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7983877
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 19, 2011
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7976284
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: July 12, 2011
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7857600
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 28, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7821215
    Abstract: Embodiments of the invention provide a method of detecting a fault condition in a motor of a pump. The method includes sensing a first current value and a speed of the motor, attempting a recovery operation if the first current value is greater than a current threshold and if the speed of the motor is less than a motor speed low threshold, and sensing a second current value during the recovery operation and shutting down a drive to the motor if the second current value is also greater than the current threshold. The method also includes performing the recovery operation for a time period if the second current value is less than the current threshold and attempting to operate the motor in a normal mode after the time period has elapsed.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: October 26, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7815420
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 19, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7751159
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 6, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump Controller System and Method
    Publication number: 20100141194
    Abstract: Embodiments of the invention provide a method of detecting a fault condition in a motor of a pump. The method includes sensing a first current value and a speed of the motor, attempting a recovery operation if the first current value is greater than a current threshold and if the speed of the motor is less than a motor speed low threshold, and sensing a second current value during the recovery operation and shutting down a drive to the motor if the second current value is also greater than the current threshold. The method also includes performing the recovery operation for a time period if the second current value is less than the current threshold and attempting to operate the motor in a normal mode after the time period has elapsed.
    Type: Application
    Filed: November 2, 2009
    Publication date: June 10, 2010
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7704051
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 27, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7686587
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 30, 2010
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7612510
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 3, 2009
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Patent number: 7572108
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 11, 2009
    Assignee: Sta-Rite Industries, LLC
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20090104044
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: November 15, 2007
    Publication date: April 23, 2009
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080260540
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 30, 2007
    Publication date: October 23, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080181787
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 31, 2007
    Publication date: July 31, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080181789
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 31, 2007
    Publication date: July 31, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080181785
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 30, 2007
    Publication date: July 31, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080140353
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 12, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080131296
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 5, 2008
    Inventor: Robert M. Koehl
  • Pump controller system and method
    Publication number: 20080131294
    Abstract: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, can detect fault conditions, and can store fault conditions for later retrieval.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 5, 2008
    Inventor: Robert M. Koehl