Abstract: 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.

Abstract: Live swivel coupling device 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, an indentation in the inner surface, and an internal, gasket-holding extension; the second has a generally radially symmetrical outer surface to relate with the inner surface of the first housing and an indentation in the outer surface. The indentations are for retaining the rotatable bearing set when the first and second housings are coupled. At least one rotatable bearing makes up a rotatable bearing set which also serves as a retaining device to hold the housings together in the main axial direction when the housings are coupled.

Abstract: Connector/coupling for connection of conduit has hollow housing, collar with internally-directed protrusion capable of engaging the conduit, and means for fastening the collar to the housing to hold these together. A quick-disconnect coupling includes receiving piece with hollow passageway, passage portion and receiving end; on the outside about the receiving end is generally cylindrical surface with a groove of a width and depth capable of receiving a stopping object, and a part of the object resides above the outside surface; a swivel collar has a generally cylindrical receiving piece mating surface with a groove therein of a width and depth capable of receiving at least a portion of the part of the stopping object which resides above the outside surface; a connect device holds a received piece to the receiving piece; and a stopping device is a part thereof. Inside-out cutting saw may be employed to cut the conduit, for example, PVC helical hose.