Patents by Inventor Mitsumasa Ohno

Mitsumasa Ohno 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).

  • Hybrid electro-mechanical-hydraulic drive system, and method of operating same
    Patent number: 5381702
    Abstract: An electro-mechanical-hydraulic drive mechanism (10) for moving a lead (11) relative to a support (12) includes an electric motor-driven element (14) and a hydraulic reaction element (15). The two elements are arranged mechanically in series between the lead and the support. The motor-driven element may be operated independently of the reaction element to move the lead relative to the support when the reaction element is held at a fixed displacement. The two elements may be operated cooperatively to move the load when the motor-driven element is operated at a controlled velocity to pressurize the reaction element, and the reaction element is operated by controlling its pressure.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: January 17, 1995
    Assignee: Moog Inc.
    Inventor: Mitsumasa Ohno