Patents by Inventor Shuki Akushicki

Shuki Akushicki 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).

  • Patent number: 4646622
    Abstract: A hydraulic control apparatus has at least two meter-in and two meter-out poppet valves. In order to be compact and deal with a great flow rate, the apparatus is arranged such that a pair of meter-in poppet valves and load check valves are located in an upper horizontal plane, a pair of meter-out poppet valves and solenoid-actuated pilot valves are located in a lower horizontal plane, and a pair of a pilot valve associated with the meter-out poppet valve and a reducing valve associated with the meter-in poppet valve are located in a middle horizontal plane and are respectively disposed in opposed relationship to each other, and the load check valve is vertically located in parallel relationship with the meter-out poppet valve.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: March 3, 1987
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventors: Naoki Ishizaki, Sadao Nunotani, Tatsumi Tada, Kazuo Uehara, Shuki Akushicki