Patents by Inventor William Y. Liu

William Y. Liu 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).

  • Publication number: 20150284148
    Abstract: Stop & Go Water Bottle Cap is a water bottle cap with an opening in its face and means to close or open the opening. The opening is closed when the water bottle to which it is attached is standing upright or is being turned sideways to mount. The opening is opened when the water bottle to which it is attached is turned upside down and is sitting on a water cooler/dispenser. It functions alternatively as a water bottle cap and as an open faucet.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 8, 2015
    Inventor: William Y. Liu
  • Patent number: 4448576
    Abstract: A pastry and dumpling maker for shaping and forming filled pastries, such as dumplings and the like, including a pair of cooperating mold sections which define therebetween a particular pastry shape to be formed. The mold sections are relatively moved into cooperative engagement with each other after the pastry is formed. A flexible strap is suspended above the mold sections and supports a dough skin with a filling placed thereon. As the mold sections are brought into cooperative engagement, a center portion of the flexible strap, together with the dough skin and filling, move downwardly between the mold sections, whereupon the dough skin is folded over the filling and sealed by the mold sections into the particular pastry shape. The shaped pastry is then removable upon separation of the mold sections.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: May 15, 1984
    Inventor: William Y. Liu
  • Patent number: 4253691
    Abstract: A litter collecting bag is retained by a clamping device in an open-end of a tubular housing. Pawl means attached to a spring loaded handle slidingly mounted atop the housing engages a sliding toothed rod connected through the housing to the clamping device permitting the litter collecting bag to be drawn into an ejected from the housing. When the collecting bag is pressed by the housing onto a quantity of litter, the litter is driven into the collecting bag. The litter bag self-seals as it is fully retracted into the tubular housing and may be discharged later to dispose of the litter conveniently.
    Type: Grant
    Filed: January 10, 1980
    Date of Patent: March 3, 1981
    Inventor: William Y. Liu
  • Patent number: 4076180
    Abstract: A threading and dicing machine having a motor mounted on an upper surface with an entry port in the upper surface of cylindrical shape carrying food pieces down to a control disk mounted on a shaft with a cutting blade mounted on the shaft above the control disk to slice the food pieces, an exit port carries the sliced pieces to a receiving container; a set of thin vertical cutting blades can be mounted to the shaft through the control disk to produce shredded pieces of the food piece; the control disk can be raised and lowered and the spacings between the thin vertical blades can be narrowed or widened, so that the sizes of the slices or shreds can be increased and decreased.
    Type: Grant
    Filed: March 9, 1976
    Date of Patent: February 28, 1978
    Inventor: William Y. Liu