Pipe joints or couplings – With assembly means or feature – With holding means functioning only during transportation...
Patent
1990-11-28
1992-04-07
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
With holding means functioning only during transportation...
285101, 285255, 285307, 285906, F16L 5500
Patent
active
051021706
ABSTRACT:
A pipe joint comprises a cylindrical main body 1 with both ends open, at least one of which is to be a pipe insertion port 10, a slender slidable cylinder 2 coaxially installed in the main body 1 so as to slide therein freely to and fro in a certain range, its free end facing the pipe insertion port 10, and a holding cylinder 3 inserted between the main body 1 and the slidable cylinder 2 in a manner to move freely back and forth. The main body 1 has a taper 11 diminishing toward the pipe insertion port 10 on its inner circumference near the port 10. The holding cylinder 3 has a slit 30 open to the pipe insertion port 10 and its outside diameter is slightly larger than the inside diameter of the pipe insertion port 10. In a state where a pipe is forcibly fitted on the slidable cylinder 2 externally, the holding cylinder 3 moves toward the pipe insertion port 10 along with the pipe being pulled back. And the main body 1 has a penetration opening 12 to receive a stick in its circumferential wall, and the holding cylinder 3 has a stopping part 31 to engage with the stick when it is inserted in the opening 12 in a state where the holding cylinder 3 and the taper 11 are not abutting against each other.
REFERENCES:
patent: 2866538 (1957-09-01), Conrad
patent: 3239246 (1966-03-01), Barber
patent: 3352576 (1967-11-01), Thomsen
patent: 4303263 (1981-12-01), Legris
patent: 4775171 (1988-10-01), Marshall
patent: 4790571 (1988-12-01), Montanari et al.
Arola Dave W.
Nitta-Moore Co., Ltd.
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