Patents by Inventor Maxwell A. Male

Maxwell A. Male 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).

  • Nozzle for sand blasting
    Patent number: 4771580
    Abstract: A device for spraying particulate material, comprises a nozzle (10) having an inlet for receiving particulate material under pressure and an outlet for discharging the material, and a housing (8) surrounding at least the outlet portion of the nozzle (10). Passages (30) defined between the housing (8) and the nozzle (10) having inlets to receive a wet fluid under pressure and terminate in an annular outlet zone (50) surrounding the outlet portion of the nozzle (10) whereby the particulate material discharged from the nozzle is surrounded by an annular stream of fluid discharged from the passages. The device may be used for sand blasting, with dry sand being discharged from the nozzle, (10), the sand being enveloped within an annular stream of water discharged from the outlet zone (50) in order to minimize dust formation.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: September 20, 1988
    Assignee: Hardblast Australia Pty. Ltd.
    Inventor: Maxwell A. Male