Patents by Inventor Roland W. Collar

Roland W. Collar 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: 3980209
    Abstract: An air-powered gun adapted to be loaded with a plastic material such as a caulking compound from a bulk container thereof, and to dispense the same through a nozzle wherein the gun is comprised of a forward loading and dispensing barrel and an oppositely extending coaxial piston-driving rear air barrel, both of which barrels are held in back-to-back receptacles in a body gripping member provided with a handle. A piston slidable in the forward barrel is connected by a shaft to a piston in the rear barrel, which shaft extends coaxially through an orifice in the body gripping member passing through the bottom of both receptacles. Two plunger valves are provided in the handle, one to direct air into the receptacle for the forward barrel, and the other, to that for the rear barrel. A removable nozzled dispensing cap is provided for the outer end of the forward barrel.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: September 14, 1976
    Assignee: Roean Industries
    Inventor: Roland W. Collar
  • Patent number: 3938709
    Abstract: A plastic material squeeze tube dispenser comprising an elongated conical housing having an opening at one end through which is passed in a sealed manner the nozzle end of a squeeze tube containing a plastic material to be dispensed therefrom. A handle body is attached to the housing and includes a trigger actuatable valve means whereby gas under pressure from a source connected to the handle body may be admitted into the housing to apply pressure to the squeeze tube. Upon release of the trigger, the gas then in the housing is vented to the atmosphere to reduce the pressure within the housing to the ambient level. The valve means is constructed so that when operated, no gas from the pressure source can escape directly through the vent, but only after it has been utilized within the housing.
    Type: Grant
    Filed: February 25, 1974
    Date of Patent: February 17, 1976
    Assignee: Techon Systems, Inc.
    Inventor: Roland W. Collar