Aerosol spray dispensers

Claim 1

IN AN AEROSOL DISPENSER, A CONTAINER HAVING A REDUCED NECK PORTION AT ITS UPPER END, AN OUTWARDLY EXTENDING UPWARDLY FACING ANNULAR SHOULDER ADJACENTLY BELOW SAID NECK PORTION, A VALVE UNIT SECURED UPON SAID NECK PORTION INCLUDING A CYLINDRICAL VERTICAL WALL DISPOSED IN SPACED RELATION ABOVE SAID ANNULAR SHOULDER, AN OVERLAY ELEMENT COMPRISING A CYLINDRICAL VERTICAL SLEEVE PORTION HAVING A CIRCULAR UPPER EDGE DISPOSED IN A PLANE NORMAL TO ITS VERTICAL AXIS AND DEFINING AN OPEN UPPER END IN WHICH SAID CYLINDRICAL WALL IS RECEIVED, SAID SLEEVE PORTION HAVING AN INSIDE DIAMETER SLIGHTLY GREATER THAN THE OUTSIDE DIAMETER OF SAID CYLINDRICAL WALL AND HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED VERTICAL RIBS INTEGRAL THEREWITH AND PROJECTING INWARDLY FROM ITS INNER SURFACE A PREDETERMINED DISTANCE WHICH IN THE DETACHED RELATION OF SAID OVERLAY ELEMENT WILL PROJECT SLIGHTLY WITHIN THE APPROXIMATE OUTSIDE CIRCUMFERENCE OF SAID CYLINDRICAL WALL, SAID RIBS BEING FRICTIONALLY ENGAGED ALONG VERTICAL CONTACT LINES WITH SAID CYLINDRICAL WALL UNDER PRESSURE RESULTING FROM OUTWARD DISPLACEMENT OF SAID RIBS AND INWARD FLEXING OF THE CIRCUMFERENTIAL PORTIONS OF SAID SLEEVE PORTION BETWEEN SAID RIBS, WHEREBY SAID OVERLAY ELEMENT IS FRICTIONALLY RETAINED UPON SAID VALVE UNIT UNDER YIELDING PRESSURE IN ANY POSITION OF VERTICAL ADJUSTMENT THEREON, AN ANNULAR SHOULDER PORTION EXTENDING OUTWARDLY FROM THE LOWER END OF SAID SLEEVE PORTION IN UPWARDLY SPACED RELATION TO SAID ANNULAR SHOULDER OF SAID CONTAINER, AND AN ANNULAR SKIRT PORTION EXTENDING DOWNWARDLY FROM SAID SHOULDER PORTION OF SAID OVERLAY ELEMENT AND ENGAGED AT ITS LOWER EDGE WITH SAID ANNULAR SHOULDER OF SAID CONTAINER TO LIMIT AND DETERMINE THE POSITION OF VERTICAL ADJUSTMENT OF SAID OVERLAY ELEMENT, AND A REMOVABLE CLOSURE CAP HAVING A CIRCUMFERENTIAL WALL FRICTIONALLY ENGAGED FOR VERTICAL SLIDING MOVEMENT WITH THE OUTER SURFACE OF SAID SLEEVE PORTION AND HAVING AN ANNULAR LOWER EDGE FOR ABUTTING SAID ANNULAR SHOULDER PORTION OF SAID OVERLAY ELEMENT TO LIMIT ITS ENGAGED POSITION UPON SAID SLEEVE PORTION.