Patents by Inventor Glen F. Chatfield

Glen F. Chatfield 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).

  • Patent number: 6701897
    Abstract: An apparatus and method for adjusting a quantity of fuel delivered to an engine when an engine operating state transitions is provided. The apparatus and method includes determining a current steady-state quantity of fuel to be delivered to the engine and add a transitory quantity of fuel, based on a difference between a previous steady-state quantity of fuel delivered and the current steady-state quantity of fuel to be delivered, to the current steady-state quantity of fuel for a period of time following initiation of the transition. The invention also provides an apparatus and method by which an operator may adjust the amount of fuel delivered during an engine operating state transition.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: March 9, 2004
    Assignee: Optimum Power Technology
    Inventor: Glen F. Chatfield
  • Publication number: 20030154962
    Abstract: A throttle and fuel injector assembly and method of controlling fuel and air supply to an engine. The assembly and method provide combustion air through a carburetor and fuel through a carburetor.
    Type: Application
    Filed: February 15, 2003
    Publication date: August 21, 2003
    Inventors: Glen F. Chatfield, Malcolm C. Ashe
  • Patent number: 6539299
    Abstract: A method and control apparatus for an internal combustion engine that allows an operator to calibrate engine performance relative to an engine operating characteristic. The control apparatus comprises a base engine control map that correlates values of the characteristic with values of a base engine control, a trim control map that correlates the values of the characteristic with values of a trim control, an engine control unit that obtains from the base engine control and trim control maps the respective base engine control and trim control values that are based on the characteristic value, and a panel that is operatively coupled with the engine control unit and includes a first switch regulating a trim signal supplied to the engine control unit. The trim control map is separated from the base control map. The engine control unit calculates an engine operating control value based on the obtained values.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: March 25, 2003
    Assignee: Optimum Power Technology
    Inventors: Glen F. Chatfield, Roy D. Houston, Philip D. McDowell
  • Publication number: 20030046049
    Abstract: An apparatus, system, and method for optimization. The apparatus, system, and method include a mechanism for ending an optimization when all models within one design tolerance of an optimum model have been simulated.
    Type: Application
    Filed: August 31, 2002
    Publication date: March 6, 2003
    Inventors: Glen F. Chatfield, John G. Crandall
  • Patent number: 6512974
    Abstract: An engine management system for an internal combustion engine. The engine management system comprises an engine control system calculating an engine operating control value, a palm-size computer transportable relative to the engine control system, and an external computer communicating with the palm-size computer. The engine operating control value is adapted to be supplied to the internal combustion engine to vary engine performance. The palm-size computer has height, width, and thickness dimensions that are no larger than approximately 6 inches by approximately 4 inches by approximately 1 inch. The palm-size computer runs a set of engine management tools that communicate engine management data to the engine control system. The external computer downloads to the palm-size computer engine management tools and engine management files, and uploads from the palm-size computer engine management files.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: January 28, 2003
    Assignee: Optimum Power Technology
    Inventors: Roy D. Houston, Glen F. Chatfield
  • Publication number: 20030000500
    Abstract: An apparatus and method for adjusting a quantity of fuel delivered to an engine when an engine operating state transitions is provided. The apparatus and method includes determining a current steady-state quantity of fuel to be delivered to the engine and add a transitory quantity of fuel, based on a difference between a previous steady-state quantity of fuel delivered and the current steady-state quantity of fuel to be delivered, to the current steady-state quantity of fuel for a period of time following initiation of the transition. The invention also provides an apparatus and method by which an operator may adjust the amount of fuel delivered during an engine operating state transition.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 2, 2003
    Applicant: Optimum Power L.P.
    Inventor: Glen F. Chatfield
  • Publication number: 20020052682
    Abstract: A method and control apparatus for an internal combustion engine that allows an operator to calibrate engine performance relative to an engine operating characteristic. The control apparatus comprises a base engine control map that correlates values of the characteristic with values of a base engine control, a trim control map that correlates the values of the characteristic with values of a trim control, an engine control unit that obtains from the base engine control and trim control maps the respective base engine control and trim control values that are based on the characteristic value, and a panel that is operatively coupled with the engine control unit and includes a first switch regulating a trim signal supplied to the engine control unit. The trim control map is separated from the base control map. The engine control unit calculates an engine operating control value based on the obtained values.
    Type: Application
    Filed: February 16, 2001
    Publication date: May 2, 2002
    Inventors: Glen F. Chatfield, Roy D. Houston, Philip D. McDowell
  • Publication number: 20020010541
    Abstract: An engine management system for an internal combustion engine. The engine management system comprises an engine control system calculating an engine operating control value, a palm-size computer transportable relative to the engine control system, and an external computer communicating with the palm-size computer. The engine operating control value is adapted to be supplied to the internal combustion engine to vary engine performance. The palm-size computer has height, width, and thickness dimensions that are no larger than approximately 6 inches by approximately 4 inches by approximately 1 inch. The palm-size computer runs a set of engine management tools that communicate engine management data to the engine control system. The external computer downloads to the palm-size computer engine management tools and engine management files, and uploads from the palm-size computer engine management files.
    Type: Application
    Filed: February 20, 2001
    Publication date: January 24, 2002
    Inventors: Roy D. Houston, Glen F. Chatfield
  • Patent number: 4459945
    Abstract: A unique reciprocating piston device that uses one or more special cams and yokes to replace the functions normally provided by crankpins and connecting rods. The cams have noncircular finite jerk lift surfaces which provide continuous positive positioning of the yokes and pistons. Various cams can be configured to overcome the performance limitations imposed by crank and rod controlled pistons for a wide variety of engines and pumps. Preferred embodiments of this invention create a flexible, reliable, efficient and smooth running device for compressing, expanding and transferring fluids. In one specific application, an internal combustion engine is designed such that its pistons spend a greater portion of time near the top and bottom of each stroke than is possible with a crankshaft type engine.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: July 17, 1984
    Inventor: Glen F. Chatfield
  • Patent number: 4183083
    Abstract: A unique method of operating a multiprogrammed computing system by dynamically regulating central processing unit (CPU) and/or peripheral resource access such that the parallel processing capability, i.e., thruput of the computing system, is increased and/or such that all programs efficiently share the computing system. The embodiment selected is dependent upon the complexity of the computing system and the amount of computing capability available for regulation. In one embodiment CPU and peripheral access is regulated in an unlike manner. In another embodiment the solution of a dynamic linear programming model, that describes the current resource requirements of two or more of the programs operating in the system, is used to regulate resource access. In yet another embodiment, the system is shared while minimizing the degradation of degradable resources.
    Type: Grant
    Filed: April 14, 1972
    Date of Patent: January 8, 1980
    Assignee: Duquesne Systems, Inc.
    Inventor: Glen F. Chatfield