Bellows-type joint assembly

Claim 1

A bellows-type joint assembly for connecting between tubular members to be connected together comprising a first resilient tubular joint section having connecting means, a second resilient intermediate tubular bellows joint section detachably connected to said first joint section and having connecting means and a third resilient tubular joint section detachably connected to said intermediate bellows joint section and having connecting means in which said connecting means of the first joint section includes a plurality of spaced annular projections of triangular crosssection formed on the inner surface of said first joint section covering a distance from one end to an intermediate point along the length of the joint section for receiving one of said tubular members to be connected, an annular flange of trapezoidal cross-section formed on the inner surface of said first joint section at a point below the lower most one of said plural projections and an annular recess formed in the inner surface of said first joint section at a point bElow said flange, said connecting means of the second intermediate joint section includes an annular projection of arcuate cross-section formed on the outer surface of the joint section at a point adjacent to one end thereof to be received in said annular recess of the first joint section and a similar annular projection of arcuate cross-section formed on the outer surface of said intermediate joint section at a point adjacent to the other end of the joint section and, said connecting means of the third joint section including an annular recess formed on the inner surface of the joint section for receiving said annular projection on the outer surface of the intermediate joint section at the other end of the latter and a plurality of spaced annular projections of arcuate crosssection formed on the inner surface of the joint section for receiving the other tubular member of the members to be connected together.