Patents by Inventor Jason K. S. Chen

Jason K. S. Chen 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: 4561571
    Abstract: A washing liquid supplier includes a container filled with washing liquid, a pumping chamber formed in a cylinder under the container and defined by a suction valve formed on the lower opening of the container, a discharge valve formed on the lower portion of the pumping chamber and a nipple button, and a discharge pipe horizontally formed under the discharge valve. The nipple button may be depressed to boost the washing liquid through the discharge pipe into user's hand. The depression of nipple button and pick-up of the liquid can be done at the same time by the single hand of the user for convenient operation.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: December 31, 1985
    Inventor: Jason K. S. Chen
  • Patent number: 4303110
    Abstract: A dispenser for drawing toothpaste from a squeeze-tube container and applying it to the top of a toothbrush with a vacuum pump of piston-cylinder construction which is so operated that the pump draws the toothpaste out of the squeeze-tube container when the toothbrush is pushed into the dispenser and discharges the same when the toothbrush is withdrawn. The toothpaste is pumped through a passage which is provided with an inlet valve which operates in cooperation with an elastic adapter used for mounting and sealing the neck portion of the squeeze-tube container, an outlet valve which operates in cooperation with a port formed in the cylinder, and an elastic discharge nozzle which opens when the toothpaste is being pumped and closes by its own resiliency when the toothpaste is being drawn out of the squeeze-tube container. The amount of toothpaste supplied each time by the dispenser can be adjustably predetermined as desired.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: December 1, 1981
    Inventor: Jason K. S. Chen