Patents by Inventor David C. Malone

David C. Malone 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: 3955720
    Abstract: A reuseable dispensing apparatus for dispensing a flowable product by pressurized air, comprising a refillable container for the product to be dispensed and an air pump operable by the user to pressurize the container after filling. The air pump has a conveniently grippable and storable handle. A user-actuable dispensing valve on the container dispenses product utilizing pressurized air as a propellant. Apparatuses are provided to permit the container to be depressurized at any time without product being dispensed, to relieve pressure in the pumping chamber either automatically at operating pressure or manually at any lesser pressure, and to permit the pumping handle to be conveniently stored with respect to the container. The apparatus can operate at relatively low pressure and can be made almost entirely of plastic.
    Type: Grant
    Filed: October 25, 1973
    Date of Patent: May 11, 1976
    Inventor: David C. Malone