Patents by Inventor Calin Raszga

Calin Raszga 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).

  • LOAD SENSE AND HYDRAULIC PUMP MANAGEMENT
    Publication number: 20120261032
    Abstract: A tree harvester is disclosed that includes first and second hydraulic pumps for powering a harvesting head of the tree harvester.
    Type: Application
    Filed: October 12, 2009
    Publication date: October 18, 2012
    Applicant: Deere and Company
    Inventors: Calin Raszga, Mark E. Breutzman
  • LOAD SENSE HYDRAULIC PUMP ALIGNMENT
    Publication number: 20120255649
    Abstract: A tree harvester is disclosed that includes first and second hydraulic pumps for powering a harvesting head of the tree harvester.
    Type: Application
    Filed: October 12, 2009
    Publication date: October 11, 2012
    Inventors: Calin Raszga, Mark E. Breutzman
  • Hydraulic gravitational load energy recuperation
    Publication number: 20060185355
    Abstract: A hydraulic system has gravitional load energy recuperation by opening a recuperation piloted valve with a pilot pressure supplied by a hydraulic pump so as to drive a recuperation hydraulic motor with a source of fluid pressurized by gravity from the load. The recuperation hydraulic motor drives the mechanical drive train of the prime mover that drives the pump that supplies the load, and other pumps that supply other loads.
    Type: Application
    Filed: February 16, 2006
    Publication date: August 24, 2006
    Inventors: Calin Raszga, Ulf Bergquist, Jeffrey Girard
  • Anti-stall pilot pressure control system for open center systems
    Publication number: 20050160904
    Abstract: A hydraulic control system has a pilot pressure supply circuit that applies a pressure differential dependent on engine speed to opposite sides of an anti-stall valve to turn off the pilot flow when the pressure differential falls below a certain value, resulting in holding the positions of the hydraulic devices being controlled until engine speed recovers.
    Type: Application
    Filed: November 9, 2004
    Publication date: July 28, 2005
    Inventors: Calin Raszga, Jeffrey Girard, Ulf Bergquist