Patents by Inventor Fu-shin Huang

Fu-shin Huang 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).

  • Automatic air compressor drain device
    Patent number: 5692540
    Abstract: An automatic air compressor drain device which is enabled and disabled by the control of a timer to turn on a solenoid for guiding the air from the air tank of an air compressor into the drainer, where the force of the compressed air pushes up the piston central shaft to open up the water inlet and allow automatic drain by the air tank, and to close up the drainer inlet when the piston central shaft is pulled down by spring load force to complete the cycle of automatic drain.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: December 2, 1997
    Inventor: Fu-shin Huang