Simplified lavatory drain pipe assembly

Claim 1

IN A LAVATORY APPARATUS INCLUDING A BASIN HAVING INNER AND OUTER SURFACES AND AN OPEN PORTION THAT EXTENDS THROUGH THE INNER AND OUTER SURFACES FOR RECEIVING A DRAIN PIPE ASSEMBLY, AN IMPROVED DRAIN PIPE ASSEMBLY COMPRISING: AN ELONGATED INTEGRAL THIN-WALLED, PRESS-DEFORMABLE TUBULAR BODY MEMBER, SAID BODY MEMBER HAVING A NECK PORTION AT ONE END THEREOF, SAID BODY MEMBER FURTHER HAVING AN INTEGRAL OUTWARDLY OFFSET SUPPORT BOSS LOCATED AT AN INTERMEDIATE LOCATION THEREALONG; FIRST CLAMPING FLANGE MEANS REMOVABLY-CONNECTED TO SAID NECK PORTION AT ONE END THEREOF, SAID FIRST CLAMPING FLANGE MEANS HAVING AN OUTWARDLY-EXTENDING RIM PORTION THAT ENGAGES THE INNER SURFACE OF THE BASIN AND AN INWARDLY-FACING VALVE SEAT PORTION; SECOND CLAMPING FLANGE MEANS ADJUSTABLY-CONNECTED TO AN INTERMEDIATE PART OF SAID NECK PORTION, SAID SECOND FLANGE MEANS HAVING A RESILIENT PORTION THAT ENGAGES THE OUTER SURFACE OF THE BASIN; A VALVE MEMBER MOVABLYSUPPORTED WITHIN SAID BODY MEMBER FOR MOVEMENT INTO AND OUT OF COOPERATIVE ENGAGEMENT WIH SAID VALVE SEAT PORTION OF SAID FIRST CLAMPING FLANGE MEANS; AN ACTUATING LEVER FOR MOVING SAID VALVE MEMBER, SAID ACTUATING LEVER HAVING A SPERICAL SURFACE PORTION INTERMEDIATE ITS END, MEANS FOR SUPPORTING SAID ACTUATING LEVER ON SAID BODY MEMBER, SAID SUPPORTING MEANS HAVING A TUBULAR MOUNTING PART AT ONE END WHICH SURROUNDINGLY-RECEIVES AND IS SECURELY CONNECTED TO SAID SUPPORT BOSS AND INCLUDES AN INTEGRAL ANNULAR LEVER SUPPORT BEAD ADJACENT ITS OTHER END FOR SUPPORTINGLY RECEIVING SAID SPHERICAL SURFACE PORTION, A HOUSING CAP SECURELY-CONNECTED TO SAID TUBULAR MOUNTING PART, AND RESILIENT MEANS OPERATIELY-ENGAGING SAID SPERICAL PORTION AND SAID HOUSING CAP FOR URGING SAID SPHERICAL PORTION INTO FRICTIONAL-PIVOTAL ENGAGEMENT WITH SAID LEVER SUPPORT BEAD.