Combination pressure seal grommet and discharge tube for sprayers

Claim 1

IN A PRESSURE SPRAYER HAVING A TANK FOR A SPRAY SOLUTION TO BE DISPENSED THROUGH AN OPENING IN THE UPPER PORTION OF THE TANK BY PRESSURE GENERATED IN THE TANK, A DISCHARGE TUB PROJECTING THROUGH SAIDOPENING TO ADJACENT THE BOTTOM OF THE TANK FOR DISCHARGE OF THE SPRAY SOLUTION, AND A RESILIENT PRESSURE SEAL GROMMET ENCOMPASSING SAID DISCHARGE TUBE AND MOUNTED FOR LIMITED AXIAL MOVEMENT AND RECIPROCATION WITHIN SAID OPENING, SAID DISCHARGE TUBE HAVING EXTERNAL SPACED SERRATIONS INTERMEDIATE THE ENDS THEREOF AND SAID GROMMET HAVING A CENTRAL PASSAGE WITH INTERNAL SPACED SERRATIONS ENGAGING SAID SERRATIONS ON THE DISCHARGE TUBE, AN ENLARGED COLLAR ON THE UPPER END OF SAID GROMMET OF GREATER DIAMETER THAN AND DISPOSED ABOVE SAID OPENING, AN ANNULAR CONSTRICTION BELOW SAID COLLAR OF LESS DIAMETER THAN SAID OPENING, A DOWNWARDLY AND OUTWARDLY FLARED ENLARGEMENT DEPENDING INTO THE INTERIOR OF THE TANK BELOW SAID ANNULAR CONSTRICTION WITH SAID FLARED ENLARGEMENT HAVING WEDGING AND SEALING CONTACT WITH THE PORTION OF THE TANK DEFINING SAID OPENING WHEN THE GROMMET IS SUBJECTED TO AIR PRESSURE IN THE TANK, AND AN ANNULAR LIP AT THE LOWER END OF THE GROMMET RETAINED IN PRESSURE SEALING CONTACT WITH SAID DISCHARGE TUBE BELOW ITS EXTERNAL SERRATIONS WHEREBY TIGHT SEALING ENGAGEMENT BETWEEN THE DISCHARGE TUBE AND THE GROMMET IS ENHANCED BY PRESSURE IN THE TANK.