Patents by Inventor Trevor Wisdom

Trevor Wisdom 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: 3992003
    Abstract: An aerosol container having sealed propellant means comprises a flexible propellant bag having air or inert gases under pressure and a predetermined quantity of product located within the container. In a first embodiment, the propellant bag is fixedly mounted at the outlet and includes a separate valve for loading of the pressurized gas. A second valve is mounted at the outlet and is connected to a perforated tube which extends downwardly into the container to emit product when the valve stem is depressed. Actuation of the valve stem causes the propellant bag to expand forcing the product out through the valve. In a second embodiment, the container includes a plurality of product bags which are mounted to a valve arrangement at the outlet and a pressurized propellant which is forced into the container to maintain the product bags under pressure. The valve arrangement comprises a separate valve for each product bag and a valve for loading the propellant into the container tube.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: November 16, 1976
    Inventors: Marco P. Visceglia, Trevor Wisdom