Abstract A portable dispenser for polymer foam reaction mixtures is provided. The dispenser comprises a supporting frame with handle. Mounted on the supporting frame are two or more aerosol containers in which are stored, under pressure, the various components which, when brought together, give rise to the polymer foam reaction. Each container is provided with a valve. The valves on all containers can be actuated simultaneously by a trigger device mounted in the supporting frame. The fluids released from the individual containers are conducted separately through short conduits to a mixing chamber located in one end of a tubular dispensing nozzle. A stationary baffle, preferably comprising a series of discs having peripheral apertures permitting constricted passage of fluid on a tortuous path, is disposed in the tubular nozzle between the mixing chamber and the exit port. The baffle ensures adequate mixing of the reaction components prior to dispensing of the reaction mixture from the exit port. The mixing chamber and baffle are readily removable for cleaning and the aerosol containers are detachably mounted for easy replacement. The portable dispenser is particularly suited for dispensing polyurethane foam reaction mixtures.
A portable apparatus for mixing and dispensing a polymer foam reaction mixture according to claim 1 wherein the apertures in the discs of the baffle are so aligned that the foam reaction mixture is compelled to follow a tortuous path in passage through said baffle.
Claim 2
Dependent Claim
239 words
A portable apparatus for mixing and dispensing a polymer foam reaction mixture which comprises in combination: i. frame housing for supporting the various elements of the apparatus in combination, said frame housing being provided with a carrying handle; ii. a plurality of storage containers having stored therein under pressure the components for a polymer foam reaction mixture, said containers each being detachably mounted in said frame housing; iii. valve means mounted on each of said storage containers for releasing the contents thereof; iv. trigger means for simultaneously actuating each of said valve means to dispense said reaction components in predetermined proportions; v. tubes detachably mounted on the exit ports of each of said valve means, each of said tubes connecting the exit port of the valve means to which it is attached to a conduit leading to the interior of a common hollow mixing chamber located at the inner end of a discharge nozzle; vi. an exit port located in said discharge nozzle at the end of the latter remote from the mixing chamber; and vii. a baffle disposed between said common mixing chamber and said exit port, said baffle comprising a plurality of discs mounted on a central axle, the faces of said discs being disposed substantially at right angles to the direction of flow of the foam reaction mixture, said discs each having an aperture in the perimeter thereof to permit passage of foam reaction mixture therethrough.
Claim 3
Dependent Claim
45 words
A portable apparatus for mixing and dispensing a polymer foam reaction mixture according to claim 3 wherein the apertures in the discs of the baffle are so aligned that the foam reaction mixture is compelled to follow a tortuous path in passage through said baffle.