Fluid coupling and fastener capture device

Details Fluid coupling and fastener capture device Fluid coupling and fastener capture device

1996-12-24

1998-10-20

Knight, Anthony

Joints and connections

Including ancillary means blocking disconnection of joint

Cam or thread lock

403316, 285 87, 285 82, F16L 5500

Patent

active

058237020

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, threaded rod and nut and a hole plug (e.g. turbine engine borescope port) are disclosed.

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