Patents by Inventor Hong Chao Yu

Hong Chao Yu 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: 6615983
    Abstract: A tool kit including a seat body and an upper lid pivotally connected with the seat body. The seat body is formed with multiple receiving holes for accommodating therein screwdriver bits or sockets. One side of each receiving hole is formed with a guide slot communicating with the receiving hole. The bottom of the upper lid is formed with multiple push arms corresponding to the guide slots. When the upper lid is pivoted, the push arms are pivotally rotated within the guide slots. When the upper lid is closed onto the seat body, the front ends of the push arms are rotated to the bottoms of the receiving holes. When the upper lid is opened, the front ends of the push arms are rotated into the middle sections of the receiving holes.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: September 9, 2003
    Inventor: Hong Chao Yu
  • Patent number: 6494128
    Abstract: An infusing container including a main body, a cover and an automatically unblocking unit. The automatically unblocking unit includes a barrel body disposed in the main body. The bottom of the barrel body is formed with a draining hole accommodated in the outlet of the main body. A movable shaft is passed through the interior of the barrel body. The bottom end of the shaft is provided with a water sealing valve positioned in a water sealing section of the barrel body for blocking the draining hole. A circumference of the water sealing section is formed with orifices. The water sealing valve is formed with notches corresponding to the orifice and communicating with the interior of the barrel body. A floating body is fitted around the shaft. An upper section of the shaft is formed with an enlarged projecting section for stopping the floating body. After a liquid flows through the orifices and the notches into the barrel body, the floating body is ascended to lift the shaft.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: December 17, 2002
    Inventor: Hong Chao Yu