Patents by Inventor Alfred R. Otto

Alfred R. Otto 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).

  • Process and device for the spraying of hot melt glue
    Patent number: 4669661
    Abstract: A process and a device (10) are proposed for spraying hot melt glue with which the heated hot melt glue by means of a pneumatically operated extrusion gun can be fed to a nozzle (25), to which pressurized air is supplied for spraying the glue. The pressurized air is heated up by means of a heating cartridge (14) around which the pressurized air is fed in spiral form. The heating cartridge (14) heats up the casing (12) of the extrusion gun simultaneously and controlled.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: June 2, 1987
    Assignee: Beyer & Otto GmbH
    Inventor: Alfred R. Otto