Pipe joints or couplings – With assembly means or feature – Inserted section
Patent
1988-03-14
1989-08-22
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Inserted section
285423, 285915, A16L 2100
Patent
active
048589586
ABSTRACT:
A slip-joint coupling (10) comprises a first coupling piece (12) having a first pipe-mounting portion (16) at one end and a first coupling mating portion (18) at the other end and a second coupling piece (14) having a second pipe-mounting portion (20) at one end and a second coupling mating portion (22) at the other end. The first and second pipe-mounting portions each has a coupling inner diameter as an inner diameter for snugly fitting on outer surfaces of standard plumbing pipes and a coupling outer diameter as an outer diameter. One of the first and second coupling mating portions has the coupling inner diameter as an inner diameter and has an intermediate diameter as an outer diameter. The intermediate diameter is intermediate the coupling inner and outer diameters. The other of said first and second coupling mating portions has the intermediate diameter as an inner diameter and the coupling diameter as an outer diameter. One of these coupling pieces has an internal shoulder between the pipe-mounting portion and the coupling mating portion. The mating portions are of equal length.
REFERENCES:
patent: 980245 (1911-01-01), Goodall
patent: 2785910 (1957-03-01), Munger
patent: 3598430 (1971-08-01), Maher et al.
patent: 3826521 (1974-07-01), Wilhemsen
patent: 4035002 (1977-07-01), Curtin
patent: 4072328 (1978-02-01), Elliott
patent: 4690434 (1987-09-01), Schmidt
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