Patents by Inventor Timothy Y. T. Lo

Timothy Y. T. Lo 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: 5624059
    Abstract: A device for dispensing corrosive liquids accurately and without spilling can be held in one hand while the other hand holds a vessel into which liquid is dispensed. The device has a tubular barrel with a thumb stop at a top end and a cap at a bottom end for connection to a liquid container. A hand grip fits over the barrel and is slidable thereon with a connection link to a plunger slidable within a cavity in the barrel. A liquid intake tube extends down from the base of the cavity in the barrel, through the cap, into the liquid container and has a first non-return valve therein, such that sliding movement of the hand grip upwards on the barrel draws liquid through the intake tube into the cavity, and a liquid dispensing tube connected to the cavity, with a second non-return valve therein, such that sliding movement of the hand grip downwards on the barrel dispenses liquid from the cavity through the dispensing tube.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: April 29, 1997
    Assignee: Axys Environmental Systems Ltd.
    Inventor: Timothy Y. T. Lo