Patents by Inventor Johnathan W. Prusak

Johnathan W. Prusak 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 for engine cylinder decompression
    Patent number: 8863726
    Abstract: A system for actuating an engine valve to decompress an engine cylinder for engine start up and/or engine braking is disclosed. The system may include a first member, such as an outer piston, disposed above an engine valve, which receives an inner piston extending into a bore provided in the first member. One or more springs may bias the inner piston into a predefined position in the first member. The inner piston may include a lower surface that directly, or through an intervening sliding pin, actuates an engine valve in response to the application of fluid pressure on the inner piston. The inner piston may be used to decompress an engine cylinder for engine start up and/or to provide engine braking.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: October 21, 2014
    Assignee: Jacobs Vehicle Systems, Inc.
    Inventors: Brian Ruggiero, Steven N. Ernest, Neil E. Fuchs, Jin Xu, Eric Day, Joseph Paturzo, Johnathan W. Prusak, Jeffrey E. Mossberg
  • METHOD AND SYSTEM FOR ENGINE CYLINDER DECOMPRESSION
    Publication number: 20130068195
    Abstract: A system for actuating an engine valve to decompress an engine cylinder for engine start up and/or engine braking is disclosed. The system may include a first member, such as an outer piston, disposed above an engine valve, which receives an inner piston extending into a bore provided in the first member. One or more springs may bias the inner piston into a predefined position in the first member. The inner piston may include a lower surface that directly, or through an intervening sliding pin, actuates an engine valve in response to the application of fluid pressure on the inner piston. The inner piston may be used to decompress an engine cylinder for engine start up and/or to provide engine braking.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 21, 2013
    Applicant: Jacobs Vehicle Systems, Inc.
    Inventors: Brian Ruggiero, Steven N. Ernest, Neil E. Fuchs, Jin Xu, Eric Day, Joseph Paturzo, III, Johnathan W. Prusak, Jeffrey M. Mossberg