Patents by Inventor Jeff Depayva

Jeff Depayva 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 SYSTEM OF INTENSIFIER PISTON CONTROL
    Publication number: 20040000597
    Abstract: The movement of the intensifier piston in a fuel injector, to control the pressurization of fuel, can be controlled with a flow control valve. The flow control valve provides different flow rates depending upon the direction of flow. In a first direction, flow control valve has a first rate of flow and in the second direction flow control valve allows a second different rate of flow. Typically, this can be applied to a intensifier piston as follows: flow traveling to the intensifier piston, in the first direction, has a first flow rate, allowing the intensifier to move downward and pressurize fuel. When injection is over, and the intensifier piston is vented, the flow control valve allows a second flow rate which is greater than the first flow rate, allowing the intensifier piston to vent quickly and reset for another injection.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Inventors: Jeff Depayva, Scott Schuricht, Senthil Rajagopalan, Glenn Wells
  • Method and system of intensifier piston control
    Patent number: 6663014
    Abstract: The movement of the intensifier piston in a fuel injector, to control the pressurization of fuel, can be controlled with a flow control valve. The flow control valve provides different flow rates depending upon the direction of flow. In a first direction, flow control valve has a first rate of flow and in the second direction flow control valve allows a second different rate of flow. Typically, this can be applied to a intensifier piston as follows: flow traveling to the intensifier piston, in the first direction, has a first flow rate, allowing the intensifier to move downward and pressurize fuel. When injection is over, and the intensifier piston is vented, the flow control valve allows a second flow rate which is greater than the first flow rate, allowing the intensifier piston to vent quickly and reset for another injection.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 16, 2003
    Assignee: Caterpillar Inc
    Inventors: Jeff Depayva, Scott Schuricht, Senthil Rajagopalan, Glenn Wells