Patents by Inventor Tsao-Jung Lan

Tsao-Jung Lan 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).

  • Servo hydraulic flow control valve assembly
    Patent number: 7028714
    Abstract: A servo hydraulic flow control valve assembly includes an oil distribution board having a first manifold defined therein near an inlet end of the oil distribution board and a second manifold defined in the oil distribution board near an outlet end of the oil distribution board. A relief valve is secured on the oil distribution board, and includes a body positioned on the oil distribution board and a rated control device mounted to the body for selectively opening the first manifold. A servo control device is secured on the oil distribution board. The servo control device includes a controller rotatably received in the oil distribution board and having a passage defined to communicate with the second manifold. A control unit is secured on the oil distribution board for driving the controller to control the pressure and the flow rate in the second manifold.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: April 18, 2006
    Inventor: Tsao-Jung Lan
  • Servo hydraulic flow control valve assembly
    Publication number: 20050257840
    Abstract: A servo hydraulic flow control valve assembly includes an oil distribution board having a first manifold defined therein near an inlet end of the oil distribution board and a second manifold defined in the oil distribution board near an outlet end of the oil distribution board. A relief valve is secured on the oil distribution board, and includes a body positioned on the oil distribution board and a rated control device mounted to the body for selectively opening the first manifold. A servo control device is secured on the oil distribution board. The servo control device includes a controller rotatably received in the oil distribution board and having a passage defined to communicate with the second manifold. A control unit is secured on the oil distribution board for driving the controller to control the pressure and the flow rate in the second manifold.
    Type: Application
    Filed: May 18, 2004
    Publication date: November 24, 2005
    Inventor: Tsao-Jung Lan