Patents by Inventor Tachung C. Yih

Tachung C. Yih 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).

  • Prosthetic devices for upper and lower limbs
    Patent number: 6676707
    Abstract: The invention is directed to a prosthesis which includes first and second members pivotally coupled together and two links which are pivotally coupled together with one link being pivotally coupled to the first member and the other link being pivotally coupled the second member. A control mechanism is provided which is pivotally coupled to the first member and the pivotal connection of the two links to move the two links and hence the second member relative to the first member. The first member may be coupled to a person to allow the prosthesis to serve in one embodiment as an arm or as a portion of an arm and in another embodiment to serve as a leg or as a portion of a leg.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: January 13, 2004
    Inventors: Tachung C. Yih, Sankar Pemmaraju
  • Prosthetic devices for upper and lower limbs
    Publication number: 20020177905
    Abstract: The invention is directed to a prosthesis which includes first and second members pivotally coupled together and two links which are pivotally coupled together with one link being pivotally coupled to the first member and the other link being pivotally coupled the second member. A control mechanism is provided which is pivotally coupled to the first member and the pivotal connection of the two links to move the two links and hence the second member relative to the first member. The first member may be coupled to a person to allow the prosthesis to serve in one embodiment as an arm or as a portion of an arm and in another embodiment to serve as a leg or as a portion of a leg.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Inventors: Tachung C. Yih, Sankar Pemmaraju
  • Skew pantograph robotic apparatus
    Patent number: 6314828
    Abstract: The apparatus has four links pivotally coupled together. First and second links each includes a first portion having an angular portion extending therefrom at an angle of between 120-135 degrees. The first link is pivotally coupled to the angular portion of the second link; the third link is pivotally coupled to the second link at about the juncture of its angular portion and its first portion; and the fourth link is pivotally coupled to the third link and to the first link at about the juncture of its angular portion and its first portion. The first portion of the second link is employed for holding a tool or a utility device thereto. A first linear actuator is pivotally coupled to the pivotal connection between the third and fourth links and a second linear actuator is pivotally coupled to the angular portion of the first link.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: November 13, 2001
    Inventor: Tachung C. Yih