Pipe joints or couplings – With means blocking release of holding means – Lock nut or washer
Patent
1994-11-08
1996-12-24
Melius, Terry Lee
Pipe joints or couplings
With means blocking release of holding means
Lock nut or washer
285 92, 285315, 411121, F16L 5500
Patent
active
055867901
ABSTRACT:
A new capture device comprising a plurality of axially extending tangs (42) on one (10) of a pair of complementary fittings (10, 14) in a fluid coupling and a polygonal circumferential groove (20) on the other fitting (14) adapted to engage the tangs. Upon rotational engagement of the fittings the tangs (42) engage the polygonal groove (20) and "ratchet" about the junctures between the flats (22) until the coupling is tight. Although not limited to particular materials, the new capture device is particularly suited to very tough, strong and hard materials such as titanium, stainless steel and Inconel alloy because the effectiveness of the capture device is dependent upon the stiffness of the tangs (42). The new device prevents vibrational disassembly of the complementary fittings without preventing disassembly solely with wrenches. Moreover, the complementary fittings and capture device can be repeatedly assembled and disassembled without any damage to the threads (12) or capture device. A variety of configurations of the capture device are illustrated and applications to a bolt and nut and a hole plug (e.g. turbine engine borescope port) are disclosed.
REFERENCES:
patent: 273182 (1883-06-01), Preston
patent: 408320 (1889-08-01), Powell
patent: 459951 (1891-09-01), Warner
patent: 1195350 (1916-08-01), Gilman
patent: 3468570 (1969-09-01), Mielke
patent: 4250348 (1981-02-01), Kitagawa
patent: 4617118 (1986-10-01), Smart
patent: 5048872 (1991-09-01), Gehring
Chun Shackelford Heather
Deimen James M.
Melius Terry Lee
Moeller Manufacturing Co., Inc.
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