Patents by Inventor Roger A. Webel

Roger A. Webel 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).

  • Hydraulic control valve
    Patent number: 10641297
    Abstract: A new means of achieving a valve float position in a closed centered hydraulic control valve. The valve has a main spool position whereby pressure compensator load sense control pressure is drained to tank through the main spool. Secondly, a pin acts on the pressure compensator to prevent the main pump flow from reaching the main section spool. Finally, the new spool position adds a connection from the consumer to tank, enabling a float position.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: May 5, 2020
    Inventors: Roger A. Webel, Evan D. Bialosky, Scott C. Graham, Frank C. Karsten, Daniel S. Lacey, Richard F. Sailer, Jr.
  • HYDRAULIC CONTROL VALVE
    Publication number: 20200056635
    Abstract: A new means of achieving a valve float position in a closed centered hydraulic control valve. The valve has a main spool position whereby pressure compensator load sense control pressure is drained to tank through the main spool. Secondly, a pin acts on the pressure compensator to prevent the main pump flow from reaching the main section spool. Finally, the new spool position adds a connection from the consumer to tank, enabling a float position.
    Type: Application
    Filed: August 17, 2018
    Publication date: February 20, 2020
    Inventors: Roger A. Webel, Evan D. Bialosky, Scott C. Graham, Frank C. Karsten, Daniel S. Lacey, Richard F. Sailer, JR.
  • Slow start control for a hydraulic hammer
    Patent number: 6491114
    Abstract: A control system for a heavy duty hydraulic hammer reduces blank firing of the hammer. The control system provides a reduced flow of hydraulic fluid to the hammer for a selected period of time upon actuation of the hammer and then provides full hydraulic flow increasing the frequency of impacts to full rated values.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: December 10, 2002
    Assignee: NPK Construction Equipment, Inc.
    Inventor: Roger A. Webel
  • Control system for an excavator thumb and a method of controlling an excavator thumb
    Patent number: 6385870
    Abstract: A control system and method of using a control system for a thumb on an excavator allows the thumb to follow a workpiece held in a bucket when the bucket moves. The thumb control circuit is activated by the press of a button and thereafter maintains a constant reduced close fluid pressure of the extend port of the thumb cylinder until the open control is actuated.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: May 14, 2002
    Assignee: NPK Construction Equipment, Inc.
    Inventors: Roger A. Webel, Salvatore L. Zingales, Sr.