Patents by Inventor David W. Casella

David W. Casella 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).

  • Pneumatic gun
    Patent number: 4974277
    Abstract: A hand held pneumatic gun having an airway that is coupled to a source of compressed air, the airway communicating with an air chamber via a trigger valve. The gun includes a detachable breech that is supported in sealed engagement against the air chamber by a support ring pivotally secured to the body of the gun. The breech incorporates a nozzle that is secured to one end of a piece of hose or tube and a polymer projectile is placed into the breech to be forced by the air pressure through the hose or tube to clean the interior of the hose or tube.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: December 4, 1990
    Assignee: Technic Pty., Ltd.
    Inventor: David W. Casella
  • Pneumatic gun
    Patent number: D323962
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: February 18, 1992
    Assignee: Compri Technic Pty. Ltd.
    Inventor: David W. Casella