Pressure sealed and locked pipe and hose coupling

Claim 1

A SLIP-ON PIPE COUPLING FOR USE ON QUICK-CONNECTABLE PIPE SYSTEM, INCLUDING A SLEEVE OF RESILIENT, COMPRESSIBLE MATERIAL HAVING A RELATIVELY HIGH COEFFICIENT OF FRICTION, SAID SLEEVE HAVING AT LEAST ONE ELONGATED PIPE-INSERTED END, SAID ELONGATED END HAVING AN INSERTED LENGTH EQUAL TO OR GREATER THAN THE DIAMETER OF THE PIPE DIVIDED BY FOUR TIMES THE COEFFICIENT OF FRICTION OF THE SLEEVE AND PIPE MATERIAL, SAID ENDS FURTHER HAVING A LEADING, OUTWARDLY DIRECTED SEALING LIP, SAID LIP HAVING A SMOOTH, CIRCUMFERENTIAL PIPE ENGAGING SURFACE, THE REMAINDER OF SAID PIPEINSERTED END HAVING ON THE OUTER WALL SUBSTANTIALLY THROUGHOUT ITS LENGTH A PIPE ENGAGING FRICTION SURFACE, SAID FRICTION SURFACE HAVING RAISED AND DEPRESSED PORTIONS, THE MAXIMUM DIAMETER OF SAID INSERTED END AT SAID DEPRESSED PORTIONS BEING LESSER THAN THE DIAMETER OF SAID SEALING LIP, SAID DEPRESSED PORTIONS BEING LONGITUDINALLY CONTINUOUS, FORMING AND DEFINING AN UNINTERRUPTED AXIAL FLUID PASSAGE FROM SAID LIP FOR AN AXIAL DISTANCE GREATER THAN THE EFFECTIVE LENGTH OF SAID INSERTED END, WHEREBY WHEN SAID END IS INSERTED IN SAID PIPE ANY FLUID ADJACENT SAID FRICTION SURFACE WILL BE CONTINUOUSLY BLED TO THE ATMOSPHERE, THEREBY ESTABLISHING AND MAINTAINING A SELF-SEALING PRESSURE DIFFERENTIAL ON OPPOSITE SIDES OF SAID LIP.