Patents by Inventor John Patrick Hinson

John Patrick Hinson 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).

  • Manually operated reciprocating liquid pump with sealing vent opening
    Patent number: 6006949
    Abstract: A manually operated reciprocating liquid pump of the type comprising a plunger that reciprocates vertically in a pump chamber to dispense liquid from a container to which the pump is attached includes a vent opening to vent air to the interior of the container as liquid is drawn from the container by the pump. The pump plunger locks in its vertically downward position in the pump chamber and is provided with a stopper that plugs the vent opening and prevents liquid in the container from passing through the vent opening when the plunger is in its locked position.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: December 28, 1999
    Assignee: Continental Sprayers International, Inc.
    Inventors: Donald D. Foster, John Patrick Hinson