Disposable spray nozzle assembly
AssigneePlas-Pak Industries, Inc.
InventorsAlbert E. Sandholm, Richard W. Clemens, John H Hunter
Life of this patent
Estimating the term…
Abstract
A disposable synthetic resin spray nozzle assembly for spraying reactive multi-component liquid mixtures includes a static mixer and an air or gas manifold. The static mixer has an elongated mixing tube containing a mixing element, and a liquid dispensing nozzle is formed at the downstream end of the mixing tube. A one-piece manifold has an inner wall which includes a mixer support section sealingly mounted around the static mixer, an air inlet section for receiving an air supply through a conduit, and an air dispensing section which, together with the outer wall of the liquid dispensing nozzle, forms an air dispensing nozzle. The reactive liquid mixture is atomized by air that supplied through the air dispensing nozzle.
Claims20
A disposable spray nozzle assembly for coupling to a dual cartridge to mix and spray a dual component mixture comprising:
- (a) a synthetic resin static mixer including (i) an elongated mixing tube with an inlet end portion and an outlet end portion providing a liquid dispensing nozzle having an outer wall, and (ii) a mixing element disposed in said mixing tube;
- and
- (b) a unitary synthetic resin manifold having a body portion with upstream end portion, a downstream end portion, and a longitudinal passage therethrough bounded by an inner wall, said upstream end portion extending about and being coupled to said mixer, said passage having a mixer support section extending about said mixer, an intermediate air inlet section, and an air dispensing section at the downstream end portion extending about and spaced from said dispensing nozzle at said outlet end portion of said mixing tube, said manifold including a tubular conduit portion extending outwardly from said body portion and providing a passage into said air inlet section of said passage, said outer wall of said mixer nozzle being spaced from said inner wall of said manifold to provide an air passage extending to the downstream end of said manifold.
A disposable spray nozzle assembly for coupling to a dual cartridge to mix and spray a dual component mixture comprising:
- (a) a synthetic resin static mixer including (i) an elongated mixing tube with an inlet end portion and an outlet end portion providing a liquid dispensing nozzle having an outer wall, and (ii) a mixing element disposed in said mixing tube;
- (b) a unitary synthetic resin manifold having a body portion with upstream end portion, a downstream end portion, and a longitudinal passage therethrough bounded by an inner wall, said upstream end portion extending about and being coupled to said mixer, said passage having a mixer support section extending about said mixer, an intermediate air inlet section, and an air dispensing section at the downstream end portion extending about and spaced from said dispensing nozzle at said outlet end portion of said mixing tube, said manifold including a tubular conduit portion extending outwardly from said body portion and providing a passage into said air inlet section of said passage, said conduit portion being configured for attachment to air supply means, said outer wall of said mixer nozzle being spaced from said inner wall of said manifold to provide an air passage extending to the downstream end of said manifold;
- and
- (c) a twin cartridge connected to said first and second liquid inlets for dispensing first and second liquid reactants, said inlet end portion of said mixer providing a mixing chamber with first and second liquid inlets for receiving first and second liquid reactants from said dual cartridge.
Dependencies are inferred from the claim text.