Patents by Inventor Shiro Takeshika

Shiro Takeshika 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 oscillator
    Patent number: 4056123
    Abstract: In a hydraulic oscillator having a main body equipped with inflow and outflow ports wherein a vibratory member is actuated to cause self-excited vibration by pressurized oil passing from the inflow port inside an oil pressure chamber so as to generate alternating flow of oil under pressure at the outflow ports, said hydraulic oscillator characterized by resilient devices provided proximate both ends of the stroke of the vibratory member so as to regulate the displacement thereof.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: November 1, 1977
    Assignee: Nihon Spindle Seizo Kabushiki Kaisha
    Inventors: Tsuneo Kimura, Shiro Takeshika