Dispensing – With discharge assistant – With container handle or handgrip
Patent
1975-05-16
1976-09-14
Tollberg, Stanley H.
Dispensing
With discharge assistant
With container handle or handgrip
222334, 222389, B67D 546
Patent
active
039802094
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. When the cap is removed and the uncovered forward barrel end is dipped into a container compound, actuating the valve to direct air into the receptacle for the rear barrel causes both pistons to move rearwardly to suck compound into the forward barrel thereby loading it. With the cap replaced, actuating the other valve to direct air into the forward barrel receptacle, drives both pistons forwardly in their respective barrels to extrude the loaded compound through the nozzled cap.
REFERENCES:
patent: 1458698 (1923-06-01), Greve
patent: 2183013 (1939-12-01), Davis
patent: 2248835 (1941-07-01), Hooydonk
patent: 2692706 (1954-10-01), Wiksten
patent: 3254806 (1966-06-01), Madsen
patent: 3279660 (1966-10-01), Collar
patent: 3386622 (1968-06-01), Cox et al.
patent: 3565287 (1971-02-01), Johnston
Marmor Charles A.
Pavitt, Jr. William H.
Roean Industries
Tollberg Stanley H.
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