Pipe joint

Pipe joints or couplings – Essential catch

Patent

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Details

285351, 285382, 285404, F16L 3700

Patent

active

045196389

ABSTRACT:
A pipe joint comprising a joint body provided with an insertion hole into which a pipe to be joined is inserted to be retained and a screw member adapted to engage with a fixing hole bored in the joint body and to form a recessed part on the outer periphery of the pipe by the engagement thereof with the joint body. Turning direction of the screw member conforms to pipe insertion direction. When joining two pipes together, a set of screw members for tightly fixing the pipes to the joint body respectively are provided in such an arrangement as perpendicular with each other. A boring member such as a drill is provided on the tip of the screw member so as to form the recessed part on the periphery of the pipe by cutting. The pipe insertion hole is adapted to comprise a diametrally large part formed on the opening side of the joint body and a diametrally small part continuous with the large part; a hollow cylindrical body whose inner diameter equal to the diameter of the small part is inserted into the diametrally large part; and an annular groove for inserting a sealing member is formed between the inward edge surface of the cylindrical body and a stepped boundary surface between the diametrally large part and diametrally small one.

REFERENCES:
patent: 1949883 (1934-03-01), Sharp
patent: 3422630 (1969-01-01), Marier
patent: 4289339 (1981-09-01), Hansen

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