Patents by Inventor Andrew P. Craig

Andrew P. Craig 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).

  • Fuel bypass system for gaseous-fueled engine
    Patent number: 11939906
    Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: March 26, 2024
    Assignee: Generac Power Systems, Inc.
    Inventors: Steven W. Craig, Andrew P. Sibrel, Aaron J. Baska, Douglas R. Clement
  • Microcontroller-based tap changer controller employing half-wave digitization of A.C. signals
    Patent number: 5581173
    Abstract: A microcontroller-based tap-changer controller including apparatus for keeping track of an electrically closed tap position and for automatically changing the tap setting of load tap-changing transformers and regulators; the tap-changer controller further utilizes the "keep-track" tap position to calculate the source voltage of the regulator for reverse power operations; and, a method for paralleling tap-changing transformers and regulators utilizing the circulating current of the units.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: December 3, 1996
    Assignee: Beckwith Electric Co., Inc.
    Inventors: Murty V. V. S. Yalla, Robert W. Beckwith, Andrew P. Craig, David C. Vescovi, James H. Harlow, Timothy J. Bryant