Patents by Inventor by Takaaki Uno, heir

by Takaaki Uno, heir 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).

  • Driving device for opening and closing a valve
    Patent number: 4235258
    Abstract: A driving device for opening and closing a valve comprises a cylindrical body, an actuating cylinder, a spindle, a piston member, a transparent plate and a stop means for controlling the rotation of the spindle. Said stop means comprises a ring gear, a spring and a stop bar having a wedge-shaped head, said wedge head having a pair of surfaces forming an included angle which is bisected by the axis of the stop bar such that rotation of the spindle by fluid pressure on the valve is prevented but manual rotation of the spindle in either direction is permitted.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: November 25, 1980
    Assignee: Tomoe Technical Research Company
    Inventors: Takayoshi Uno, deceased, by Takaaki Uno, heir, by Yoshishige Uno, heir, by Hiroyoshi Uno, heir, Takashi Ida, Minoru Onaka, Hayato Shigeta