| 摘要 |
Live swivel coupling has a hollow first housing and a hollow second housing, each of which is open on opposing ends in a main axial direction. The first has a generally radially symmetrical inner surface and an indentation in the inner surface, and the second has a generally radially symmetrical outer surface and an indentation in the outer surface. The indentations are for retaining a rotatable bearing set of one or more rotatable bearings when the first and second housings are coupled. The rotatable bearing set also serves as a retaining device to hold the first and second couplings together. The live swivel coupling, which can be adapted to receive a male conduit or hose terminus member that can be secured with a set of cam-locking handles, also has one or more of the following: an internal, axial extension of the hollow second housing; a plurality of rotatable bearing feed/stop members which communicate with the indentations from external the first housing; at least two sealing rings which form a seal between the first and second housings when they are coupled; a smooth flow ring for placement inside an attached hose; and a hose-end skirt as part of the second housing, which has a set of female threads useful for engaging helical ribs of a metal hose, optionally with one or more fastener devices in the skirt for assisting in keeping or to keep the metal hose from separating from the skirt. The coupling can be especially useful in dry goods transfer.
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