Patents by Inventor Shoichiro Inatomi

Shoichiro Inatomi 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).

  • Fluid circuit for operating a bidirectional hydraulic motor with a reduced shock
    Patent number: 4628690
    Abstract: A hydraulic circuit is disclosed for driving a bidirectional hydraulic motor from a pump via a hand operated directional control valve, as for propelling an earthmover or actuating an implement assembly thereon. For mitigating an abrupt pressure rise as when the motor is set into or out of rotation, the circuit has a pair of oppositely directed dual pressure relief valves connected in parallel with each other between a pair of main lines extending between motor and directional control valve. Each dual pressure relief valve is normally conditioned to pass at a predetermined lower pressure the pressurized fluid from one of the main lines and to pass at a predetermined higher pressure the pressurized fluid from the other main line.
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: December 16, 1986
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Mitsuru Arai, Hideyori Sato, Shoichiro Inatomi