Slip-proof coupling device

Claim 1

A coupling assembly for coupling sections of tubing, comprising a sleeve member to the opposite ends of which sections of tubing may be telescopically connected and an elongated strap the opposite ends of which are removably securable to said sleeve member and which removably cooperates intermediate said ends with at least one of said sections of tubing for elastically maintaining the connection between said section of tubing and said sleeve member, said sleeve member is substantially cylindrical in form and has intermediate the ends thereof a circumferential area of increased diameter, wherein a plurality of mushroom-like buttons are fixed in diametrical relation externally on said circumferential area, wherein said strap has a series of holes longitudinally spaced therein smaller in diameter than the said buttons but expandable thereover to secure said strap thereto, said one section of tubing has an annular flange spaced from one end thereof, said strap has an enlarged hole intermediate said ends, wherein the intermediate portion of the strap surrounds said one section of tubing and engages said flange to rotatably hold said one section of tubing to said sleeve member, and wherein an elongated circumferentially extending opening through said circumferential area is provided for unrestricted venting communication to atmosphere from within said sleeve.