초록 ▼

A spray assembly for mixing catalyst with a high viscosity material and applying thin coatings of that material to a substrate that is particularly useful for applying body putty to a surface. The spray assembly has first and second through air passageways between an inlet end portion and different

A spray assembly for mixing catalyst with a high viscosity material and applying thin coatings of that material to a substrate that is particularly useful for applying body putty to a surface. The spray assembly has first and second through air passageways between an inlet end portion and different portions of an outlet end. The through air passageways each have a straight central axis adjacent the outlet end, the extensions of which axes outside the spray nozzle intersect a short distance from the outlet end of the spray nozzle. A large suction tube for the larger first air passageway has an upper end positioned within a cylindrical portion of the first air passageway. Air streams propelled through the passageways draw high viscosity material through the larger suction tube and catalyst through a smaller suction tube into those air streams. Intersection of those air streams outside of the nozzle mixes the catalyst material with the high viscosity material. A manually operable valve in the larger suction tube can adjust the amount of catalyzed high viscosity material being sprayed.

대표청구항 ▼

[ What is claimed is:] [9.] A spray assembly adapted for spraying un-cured resin while combining a catalyst with the resin that will cause the resin to cure, said spray assembly comprising:a spray nozzle having an inlet end portion adapted to be coupled to a source of air under pressure, an outlet e

[ What is claimed is:] [9.] A spray assembly adapted for spraying un-cured resin while combining a catalyst with the resin that will cause the resin to cure, said spray assembly comprising:a spray nozzle having an inlet end portion adapted to be coupled to a source of air under pressure, an outlet end having first and second portions, said spray nozzle having inner surfaces defining a first through air passageway between said inlet end portion and said first portion of said outlet end, said first through air passageway having a straight central axis adjacent said first portion of said outlet end, a first suction tube having upper and lower ends and a first through suction passageway between said upper and lower ends, the upper end of said first suction tube being positioned within said first through air passageway with a portion of the first suction passageway at the upper end of said first suction tube disposed at generally a right angle with respect to the straight central axis of said first through air passageway so that an air stream propelled through said first through air passageway from said inlet end portion will pass over the upper end of said first suction tube and can draw the un-cured resin through said first suction passageway into the air stream, said inner surfaces of said spray nozzle also defining a second through air passageway between said inlet end portion and said second portion of said outlet end, said second air passageway having a straight central axis adjacent said second portion of said outlet end, a second suction tube having upper and lower ends and a second through suction passageway between said upper and lower ends, the upper end of said second suction tube being positioned with a portion of the second suction passageway at the upper end of said second suction tube disposed at generally a right angle with respect to the central axis of said second passageway so that an air stream propelled through said second passageway from said inlet end portion will pass over the upper end of said second suction tube and can draw said catalyst material through said second suction passageway into the air stream propelled through said second through air passageway, said straight central axes of said first and second air passageways being disposed to cause air streams propelled through said first and second air passageways to intersect at a position spaced from said nozzle to mix at that position the un-cured resin and catalyst materials drawn into said air streams through said first and second suction passageways;a valve comprisinga valve body attached to said spray nozzle, having a socket, and having separate inlet and outlet passageways having spaced ends communicating with said socket with said outlet passageway communicating between said socket and the suction passageway in said first suction tube,a moveable member mounted in the socket in said valve body for movement between open and closed positions and through intermediate positions between said open and closed positions, said moveable member having a connectable passageway having opposite ends adapted to connect between the spaced ends of said inlet and outlet passageways with pairs of said opposite ends and said spaced ends in communication in said open and intermediate positions, to be spaced from at least one of the spaced ends of said inlet and outlet passageways in said closed position so that in said closed position said moveable member blocks communication between said inlet and outlet passageways in said valve body, and adapted to have decreasing portions of said pairs of said opposite ends and said spaced ends in communication during movement of said moveable member through said intermediate positions from said open position toward said closed position, said moveable member having a through air inlet passageway having an inlet opening through the surface of said moveable member that is open to the atmosphere when said moveable member is in said closed position, and an outlet opening positioned to communicate with said outlet passageway in said valve body in the closed position of said moveable member so that air will be drawn into said outlet passageway, said outlet opening being spaced from said outlet passageway in said valve body in the intermediate and open positions of said moveable member;means for providing the un-cured resin at the inlet passageway in the valve body; andmeans for providing the catalyst at the through suction passageway of said second suction tube.