Patents by Inventor Yasser A. Al Charif

Yasser A. Al Charif 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 structure for controlling an apparatus, such as a fuel injector, using electronic trimming
    Patent number: 5634448
    Abstract: A structure and method for electronically minimizing or eliminating performance variation of an apparatus controllable by a control signal, such as an electronically-controlled fuel injector, is disclosed. The method includes the steps of measuring the resultant characteristics of the apparatus at a plurality of operating conditions, such as timing and delivery characteristics of the fuel injector, adjusting the control signal as a function of the measured resultant characteristics, such as by adjusting a base timing and duration or pulse width of a fuel delivery command signal for a fuel injector, and controlling the apparatus in accordance with the adjusted control signal to reduce performance variation.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: June 3, 1997
    Assignee: Caterpillar Inc.
    Inventors: Ronald D. Shinogle, Vernon R. Smith, Richard A. DeKeyser, Stephen F. Glassey, Yasser A. Al-Charif
  • Programmable high idle set switch and method of operating same
    Patent number: 5528500
    Abstract: An electronic control for controlling a high idle set value of equipment having an engine is disclosed. The control includes an electronic controller electrically connected to a rocker switch comprising a high idle switch and a low idle switch. An engine speed sensor and a decelerator pedal position sensor are electrically connected to the electronic controller. The electronic control permits the equipment operator to program a desired high idle set point value. The control thereafter produces an engine speed command based on the high idle set point value. A decelerator pedal is provided to permit the equipment operator to reduce the engine speed command value below the high idle set point value.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: June 18, 1996
    Assignee: Caterpillar Inc.
    Inventors: Yasser A. Al-Charif, David V. Gile, Amy L. Moore-McKee
  • Method and structure for controlling an apparatus, such as a fuel injector, using electronic trimming
    Patent number: RE37807
    Abstract: A structure and method for electronically minimizing or eliminating performance variation of an apparatus controllable by a control signal, such as an electronically-controlled fuel injector, is disclosed. The method includes the steps of measuring the resultant characteristics of the apparatus at a plurality of operating conditions, such as timing and delivery characteristics of the fuel injector, adjusting the control signal as a function of the measured resultant characteristics, such as by adjusting a base timing and duration or pulse width of a fuel delivery command signal for a fuel injector, and controlling the apparatus in accordance with the adjusted control signal to reduce performance variation.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: July 30, 2002
    Assignee: Caterpillar Inc.
    Inventors: Ronald D. Shinogle, Richard A. De Keyser, Vernon R. Smith, Stephen F. Glassey, Yasser A. Al Charif