Abstract: A swivel joint for interconnecting two lengths of pipe, comprises an inner annular member adapted, in use, to be connected to a first length of pipe and an outer annular member co-axial with the inner annular member and adapted, in use, to be connected to a second length of pipe, and a bearing arrangement locating the inner and outer members for relative rotary movement with respect to one another. A lubricant reservoir is connected to the bearing arrangement, and a pump drive driven by relative rotary movement between the inner and outer annular members pumps lubricant from the lubricant reservoir to the bearing arrangement. The lubricant reservoir comprises a collapsible hose, and the pump device (42) comprises system for effecting a peristaltic action in the hose as a result of relative rotary movement of the inner and outer annular members, thereby causing lubricant to be displaced from the hose towards the bearing arrangement.

Abstract: A swivel joint for interconnecting two lengths of pipe, comprising an inner member (1) and an outer member (2), a chamber defined by the inner member (1) and the outer member (2) and accommodating bearing means (15a, 15b) locating the inner member (1) and the outer member (2) for rotary movement relative to one another. Pump means (8) for circulating lubricant within the chamber is provided, which pump means (8) is driven by relative movement between the inner member (1) and the outer member (2).