Patents by Inventor Liu P. Chih

Liu P. Chih 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: 5105753
    Abstract: A multi-purpose aquatic propulsion device that may be utilized both with a water craft and separately therefrom. The device has an exhaust conduit including a check valve that permits the device to be utilized underwater. An arrangement is also provided for removably securing the housing under a water craft, whereby the propulsion device drives the craft while submerged.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: April 21, 1992
    Inventors: Liu P. Chih, Jack Hwang
  • Patent number: 4840242
    Abstract: A walking animal toy is capable of moving forward and backwards as well as turn. The toy is meant for riding by a child. Four legs of the toy can be replaced by four wheels, so that the walking toy can become a car that looks like the animal. The toy includes a battery-powered motor drive and speed reduction which rotates a rear shaft having eccentric projections at its ends. A drive shaft is driven by the rear shaft which, in turn, rotates a front shaft connected to universal joints and similar eccentrical projections. A turning mechanism is connected to the front shaft and a handle is provided for steering the turning mechanism. The head, legs or wheels, and tail of the animal are detachable and can be reassembled by the child.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: June 20, 1989
    Inventors: Liu P. Chih, Chi Y. Hwang
  • Patent number: 4811682
    Abstract: A mini inflatable yacht for children's use mainly comprises a mini yacht and an air-filled bladder. The mini yacht is constituted of a boat body with a lid, fitted with a handle and a seat and provided with a waterproof plate having air inlet and outlet pipes in combination with a battery, a fan and a motor mounted in the boat body; a transmitting assembly; and a propeller. The inflatable bladder has an inner flange for connecting the bladder to the boat body. When not in use, the air-filled bladder can be emptied and received under the seat of the yacht for easy carrying.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: March 14, 1989
    Inventors: Chi Y. Hwang, Liu P. Chih