Patents by Inventor Paul W. Padrutt

Paul W. Padrutt 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).

  • Power shovel and crowd system therefor
    Patent number: 4046270
    Abstract: A power shovel comprising a body; a front end assembly mounted on the body including a dipper; means for crowding the dipper; means for hoisting the dipper; and an energy regeneration system including an energy storing means and means actuated by a predetermined movement of at least one component of the front end assembly for charging the energy storing means, the energy storing means providing in the loaded condition a force applicable to a component of the front end assembly for at least biasing such component toward a predetermined movement.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: September 6, 1977
    Assignee: Marion Power Shovel Company, Inc.
    Inventors: George B. Baron, Paul W. Padrutt
  • Motion limit system for power shovels
    Patent number: 3976211
    Abstract: In a power shovel having a crowd system for crowding and retracting a dipper and a hoist system for hoisting and lowering such a dipper, a system for limiting the motion of the dipper generally comprising means operatively interconnecting a crowd componment movable between predetermined crowd and retract limits and crowd control lever responsive to a movement of the crowd component between the pedetermined limits of movement thereof for increasingly biasing the crowd control lever steadily away from an operative position thereof, as the crowd component approaches one of the predetermined limits of movement thereof, means operatively interconnecting a hoist control lever and a hoist component movable between predetermined upper and lower limits responsive to a movement of the hoist component between the limits of movement thereof for increasingly biasing the hoist control lever steadily away from an operative position thereof as the hoist component approaches one of the predetermined limits of movement thereof
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: August 24, 1976
    Assignee: Marion Power Shovel Company, Inc.
    Inventors: George B. Baron, Paul W. Padrutt
  • Power shovel and crowd system therefor
    Patent number: 3971215
    Abstract: A power shovel comprising a body; a front end assembly mounted on the body including a dipper; means for crowding the dipper; means for hoisting the dipper; and an energy regeneration system including an energy storing means and means actuated by a predetermined movement of at least one component of the front end assembly for charging the energy storing means, the energy storing means providing in the loaded condition a force applicable to a component of the front end assembly for at least biasing such component toward a predetermined movement.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: July 27, 1976
    Assignee: Marion Power Shovel Company, Inc.
    Inventors: George B. Baron, Paul W. Padrutt