Adjustable square drain

Claim 1

AN ADJUSTABLE DRAIN COMPRISING A DRAIN BODY HAVING A FOUR-SIDED UPPER END PORTION DEFINING A SQUARE OPENING, AN ADJUSTABLE DRAIN COLLAR HAVING A FOUR-SIDED SQUARE TUBULAR PORTION LOOSELY RECEIVED IN TELESCOPIC RELATION IN SAID OPENING AND ADAPTED TO BE SELECTIVELY FITTED THEREON IN ANY ONE OF FOUR DIFFERENTLY ORIENTED POSITIONS OF SAID COLLAR RELATIVE TO SAID BODY, MEANS ON ONE OF SAID PORTIONS DEFINING FOUR SUPPORT SURFACES LYING IN SUBSTANTIALLY A COMMON PLANE AND EACH LOCATED IN A DIFFERENT RELATIVE LATERAL POSITION ON ONE OF THE SIDES OF SAID ONE PORTION, AND MEANS ONE EACH OF THE FOUR SIDES OF THE OTHER OF SAID PORTIONS DEFINING A PLURALITY OF STEPPED BEARING EDGES ARRANGED SO THAT EACH BEARING EDGE LIES IN SUBSTANTIALLY A COMMON PLANE WITH A BEARING EDGE ON EACH OF THE OTHER SIDES OF SAID OTHER PORTION SO AS TO PROVIDE A PLURALITY OF SETS OF FOUR BEARING EDGES LYING IN VERTICALLY SPACED PLANES, THE LOCATION OF SAID BEARING EDGES BEING COORDINATED WITH THE LOCATION OF SAID SUPPORT SURFACES SO THAT THE RESPECTIVE BEARING EDGES OF EACH OF SAID SETS ARE SELECTIVELY ENGAGEABLE WITH SAID SUPPORT SURFACES IN EACH OF SAID DIFFERENTLY ORIENTED POSITIONS OF SAID COLLAR RELATIVE TO SAID BODY, WHEREBY SAID COLLAR IS ADAPTED TO HAVE A STABLE FOUR-POINT SUPPORT AT A PLURALITY OF DIFFERENT ELEVATED DISTANCES RELATIVE TO SAID BODY CORRESPONDING TO SAID DIFFERENTLY ORIENTED POSITIONS.