SOIL PIPE COUPLING

摘要

An unshielded soil pipe. There is an annular portion formed from an elastomer that produce a hardness of about 95 on the Shore Durometer A Scale. Clamps attach to clamping sleeves made with the same material as the annular portion. The clamping sleeves are formed integrally with the annular portion. The clamping sleeves extend axially from either side of the annular portion to overlap a length of each pipe to be joined. Each of the clamping sleeves is formed with an annular groove to receive the clamping means. There is at least one outwardly projecting continuous circumferential ridge formed in the annular groove to separate the clamping means from the clamping sleeve and to stiffen the clamping sleeves. The pipe to be coupled may be inserted into the clamping sleeves. The clamps are tightened to shrink the clamping sleeves about the pipes to be coupled. The unshielded soil pipe coupler provides an excellent leak proof joint. No additional gaskets are required and because of the rigidity of the coupling alignment of the pipes to be coupled is easily maintained. Pre construction in the plant of at least a portion of the joint is also readily available.