Patent ID: 6588070
Filing Date: 2003-07-08
Classification: F16L,Y10T

Abstract:
A pipe leak repair clamp assembly comprising:a close lug having an elongate body having an upper surface and lower surface; a tensioner bar extending upward and outward perpendicularly from said close lug body; an open lug having an elongate body having an upper surface and a lower surface; a tensioner bar extending upward and outward perpendicular from said open lug body; said close lug body having a boss thereon spaced from and parallel to said tensioner bar; said open lug body having a boss thereon spaced from and parallel to said tensioner bar; a bolt having a head end a threaded end; a nut adapted for screwing onto said threaded end; said close lug body boss having a nut bearing surface and being adapted to receive said bolt threaded end; said open lug body boss having an open lug bolt head seat and being adapted to receive said bolt head end; said close lug body and said open lug body being so arranged that said close lug tensioner bar bears on said open lug body on said upper surface thereof and said open lug tensioner bar bears on said close lug body on said upper surface thereof; each said close lug body and said open lug body having mutually facing jaw portions extending from the full length of said lug bodies; said jaw portions having a groove extending the length thereof defined by an upper jaw and a pressure jaw and opening into an inner recess also extending the length thereof; each said upper jaw and said pressure jaw having a common opening; each said pressure jaw having an arcuate end and a chamfer extending downward beneath said jaw portion to said lower surface thereof; and a flexible band having opposing folded ends and of such length to extend around a pipe to be repaired; said band opposing ends being so configured as to be secured within said inner recess and groove of said close lug jaw portion and said open lug jaw portion, respectively; whereby upon assembly of said repair clamp assembly, said band is tightened around said pipe upon tightening said nut against said nut bearing surface; wherein each said end band opposing folded ends has inwardly spiraled multiple folds, comprising a radius bend, a horizontal portion, a right angle upward bend, a vertical end portion, a right angle horizontal bend, an upper outer horizontal portion, a 180 degree radius bend, a lower outer horizontal portion, a 180 degree sharp radius bend, an inner lower horizontal portion, a 180 degree medium radius bend, and an inner downward arc portion leading to a band end portion located between said 180 degree sharp radius bend and said vertical end portion in the vicinity of said right angle upward bend such that upon tension being placed on said band, said band end portion locks between said 180 degree sharp radius bend and said right angle upward bend; and wherein said recess has an outer upper wall and an outer lower wall extending from said groove opening, an inner concave wall opposite said outer walls, an upper wall extending between said outer upper wall and said inner concave wall, and a lower wall extending between said outer lower wall and said inner concave wall.