Pipe-connecting device and pipes

Claim 1

A pipe-connecting device with an elongated insert for connecting pipes by inserting the insert so the longitudinal edges thereof enter corresponding grooves (31) in the pipes, comprising in combination: an elongated flat inserting member (23) having a straight edge with an inner base (22) and a rounded far end; a flat pressing portion (24) separated therefrom but linked thereto by a bridge (27), said bridge forming a straight elongated notch (25) towards said rounded far end and an outwardly curved notch (26); a longitudinal recessed groove (28) towards the rounded far end, towards the inner base, and in the intermediate portion of said pressing portion (24) forming an outer projection (30) and an inner projection (29) of slightly arcuate shape towards the outer tip thereof disposed next to said base (22), said member (23) being widest at the portion having said tip; and a reinforcing rib extending from said base along said inserting member, whereby, said inserting member (23) can be forcefully inserted into a pipe of slightly smaller diameter, by sliding the straight edge on one side and the inner and outer projections (29, 30) on the other side into the corresponding grooves (31) in the pipe, said bridge (27) and notches (25, 26) providing resiliency to the inserting member (23) firmly engaging said pipe, said inner and outer projections (29, 30) preventing the engaged pipe from sliding off said member (23).