Corrugated tubing structure

Claim 1

A FLEXIBLE, HIGH STRENGTH TUBING PRODUCT FOR USE IN THE DRAINAGE AND CONVEYANCE OF FLUID MATERIALS BENEATH THE SURFACE OF THE GROUND OR THE LIKE, SAID TUBING PRODUCT COMPRISINGG AN ELONGATED, GENERALLY CYLINDRICAL TUBING MEMBER MADE FROM A POLYMERIC MATERIAL, SAID TUBING MEMBER INCLUDING A PLURALITY OF RADIALLY SYMMETRICAL IMPERFORATE CORRUGATIONS, EACH CORRUGATION EXTENDING CONTINUOUSLY CIRCUMFERENTIALLY IN SUBSTANTIALLY A PLANE PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID MEMBERS, SAID CORRUGATIONS BEING IN EQUALLY SPACED RELATION LONGITUDINALLY ALONG THE LENGTH OF SAID MEMBER, SAID CORRUGATIONS EACH INCLUDING GENERALLY FLAT SIDE WALL WHICH COVERAGE UPWARDLY INTO ONE ANOTHER IN A DIRECTION AWAY FROM THE LONGITUDINAL CENTRAL AXIS OF THE TUBING MEMBER TO DEFINE A GENERALLY TRIANGULAR CONFIGURATION IN CROSS-SECTION, THE SIDE WALLS OF EACH OF SAID CORRUGATIONS BEING CONNECTED CIRCUMFERENTIALLY TOGETHER BY TROUGH PORTIONS WHICH EXTEND GENERALLY PLANAR IN SECTION PARALLEL TO THE LONGITUDINAL CENTRAL AXIS OF THE TUBING MEMBER, SAID PORTIONS BEING IMMPERFORATE WALLS ON AT LEAST THE LOWER HALF OF THE TUBING MEMBER AND AT LEAST TWO PARALLEL TOWS OF SPACED FLUID TRANSMITTING OPENINGS DISPOSED ONLY IN AN UPPER HALF OF THE TUBING MEMBER AND EXTENDING LONGITUDINALLY ALONG THE LENGTH OF THE TUBING MEMBER, SAID OPENINGS EXTENDING THROUGH SAID TROUGH PORTIONS ONLY FOR DRAINING AND CONVEYING FLUID MATERIALS THROUGH THE TUBING MEMBER.