Urethane foam gun

Details Urethane foam gun Urethane foam gun

1989-12-14

1991-07-02

Kashnikow, Andres

Dispensing

Processes of dispensing

222132, 222135, 222145, 222149, 222485, 222513, G01F 1100

Patent

active

050279750

ABSTRACT:
Dispensing gun for mixing and dispensing reactable fluent materials. A cylinder is slidable within a bore in response to a piston sliding within the cylinder. When the cylinder moves away from a discharge opening, orifices in the wall of the cylinder become aligned with supply passages in the bore allowing the reactable fluent materials to mix in the cylinder and be dispensed from the discharge opening. The cylinder, piston and orifices are cleaned by a cleaning solvent at the end of each dispensing operation. Movement of the piston towards the discharge opening draws the cleaning solvent through the orifices into the interior of the cylinder. The dispensing gun is particularly useful for mixing organic resins and polyisocyanates to dispense polyurethane foam.

REFERENCES:
patent: D285960 (1986-09-01), Keske
patent: 3687370 (1972-08-01), Sperry
patent: 3945569 (1976-03-01), Sperry
patent: 4099673 (1978-07-01), Heath et al.
patent: 4159079 (1979-06-01), Phillips, Jr.
patent: 4377256 (1983-03-01), Commette et al.
patent: 4426023 (1984-01-01), Sperry et al.
patent: 4469251 (1984-09-01), Sperry et al.
patent: 4550863 (1985-11-01), Farrey
patent: 4568003 (1986-02-01), Sperry et al.

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