Spray head and guide assembly for aerosols

Claim 1

IN AN AEROSOL DISPENSER VALVE FOR A CONTAINER HAVING AN INWARDLY DISHED COVER MEMBER CLOSING THE OPEN UPPER END OF THE CONTAINER AND SAID COVER MEMBER HAS A CENTRALLY POSITIONED, UPSTANDING NECK HAVING AN UPPER END WALL PROVIDED WITH AN APERTURE AND A SEALING GASKET HAVING A CENTRAL APERTURE ALIGNED WITH SAID END WALL APERTURE AND A SPRING BIASED VALVE PLUNGER MEMBER HAVING AN UPWARDLY OPENING SOCKET OF CYLINDRICAL CONFIGURATION COAXIALLY ALIGNED WITH SAID APERTURES AND NORMALLY BIASED UPWARDLY INTO SEALING ENGAGEMENT WITH SAID GASKET; THE HEREIN IMPROVEMENT WHICH COMPRISES, A GUIDE MEMBER AND SPRAY HEAD ASSEMBLY ADAPTED TO BE REMOVABLY MOUNTED ON SAID NECK FOR DISPENSING AN AEROSOL PRODUCT FROM THE CONTAINER, SAID GUIDE MEMBER COMPRISING, A BODY PORTION HAVING AN UPPER END AND A CENTRAL BORE THERETHROUGH, A HOLLOW, TUBULAR PORTION DEPENDING FROM THE OPPOSITE END OF SAID BODY PORTION COAXIALLY WITH SAID BORE AND HAVING AN INTERNAL DIAMETER ENABLING SAID TUBULAR PORTION TO BE TELESCOPICALLY ENGAGED OVER SAID NECK IN A FRICTION FIT, SAID BORE BEING LARGER IN DIAMETER THAN THE INTERNAL DIAMETER OF THE TUBULAR PORTION TO PROVIDE AN INTERNAL SHOULDER BETWEEN SAID BODY AND TUBULAR PORTIONS, THE UPPER END FACE OF SAID BODY PORTION HAVING AN UPWARDLY OPENING SLOT THEREIN EXTENDING RADIALLY FROM SAID BORE TO THE MARGINAL EDGE OF SAID BODY PORTION, SAID UPPER END FACE LIKEWISE HAVING AN UPWARDLY AND OUTWARDLY CONCAVE SURFACE PORTION EXTENDING RADIALLY FROM SAID BORE TO THE MARGINAL EDGE OF SAID BODY PORTION, ALBEIT, IN A DIRECTION DIAMETRICALLY OPPOSITE TO SAID SLOT, SAID SPRAY HEAD COMPRISING, A GENERALLY CYLINDRICAL HOLLOW BODY MEMBER HAVING AN IMPERFORATE, TRANSVERSE, UPPER END WALL, SAID BODY MEMBER BEING SLIDABLY ENGAGED AXIALLY IN SAID BORE THROUGH THE UPPER END OF SAID BODY PORTION, SAID BODY MEMBER HAVING A HOLLOW DEPENDING STEM EXTENDING INTO THE TUBULAR PORTION PAST SAID SHOULDER, AN ELONGATED SPRAY NOZZLE PROJECTING LATERALLY FROM SAID BODY MEMBER AND HAVING A PASSAGEWAY THERETHROUGH, ONE END OF SAID PASSAGEWAY COMMUNICATING WITH THE INTERIOR OF SAID HOLLOW STEM ADJACENT THE UPPER END OF SAID STEM, THE OPPOSITE END OF SAID PASSAGEWAY OPENING TO AMBIENT ATMOSPHERE, SAID PASSAGEWAY HAVING AN INTERNAL DIAMETER OF NON-UNIFORM CROSS-SECTION TO PROVIDE AN EXPANSION CHAMBER IN THE NOZZLE INTERMEDIATE THE OPEN ENDS OF SAID PASSAGEWAY, SAID ASSEMBLY ADAPTED TO BE REMOVABLY MOUNTED ON SAID NECK WITH THE STEM EXTENDING THROUGH SAID APERTURES INTO SAID SOCKET AND SAID NOZZLE ALIGNED WITH SAID SLOT ALBEIT NORMALLY SPACED FROM THE BOTTOM OF THE SLOT AND SAID TRANSVERSE UPPER END WALL PROTRUDING UPWARDLY BEYOND THE UPPER END OF SAID BODY PORTION BETWEEN THE SLOT AND SAID CONCAVE SURFACE, SAID CONCAVE PORTION PROVIDING A FINGER GUIDE FOR DEPRESSING SAID SPRAY HEAD TO DISPENSE THE AEROSOL PRODUCT THROUGH SAID OPPOSITE END OF THE PASSAGEWAY IN A DIRECTION AWAY FROM THE CONCAVE SURFACE WITH ACCOMPANYING MOVEMENT OF THE NOZZLE INTO SAID SLOT.