Pipe joints or couplings – With means blocking release of holding means – Key or pin
Patent
1989-06-06
1990-04-10
Arola, Dave W.
Pipe joints or couplings
With means blocking release of holding means
Key or pin
285178, 285330, 285370, 403341, F16L 5500
Patent
active
049154230
ABSTRACT:
A releasable coupling 10 includes a first element 12 which is rotatable about a rotational axis 18. A second element 14 is axially aligned with the first element 12, the first element 12 and the second element 14 being axially displaceable relative to each other. The first element 12 and the second element 14 define complementary drive formations 24, 26 which, when the first element 12 and the second element 14 abut axially are engaged with each other, and when the first element 12 and the second element 14 are spaced axially from each other by a predetermined amount are disengaged from each other. A connecting member 16 releasably couples the first element 12 and the second element 14 together, the connecting member 16 being connected to the first element 12 and the second element 14 in such a manner that, when the drive formations 24, 26 of the first element 12 and the second element 14 are disengaged and the first element 12 is rotated in a predetermined direction, the connecting member 16 is disconnected from the second element 14.
REFERENCES:
patent: 1524677 (1925-02-01), Thompson
patent: 1883071 (1932-10-01), Stone
patent: 2094416 (1937-09-01), Sheffield
patent: 2118350 (1930-05-01), Holt
patent: 2307275 (1943-01-01), Johnson
patent: 2423069 (1947-06-01), McElhose et al.
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