Swivel or rotating joints
AssigneeJ. H. Fenner & Co. Limited
InventorsColin Seabrook, Simon D. Usher
Life of this patent
Estimating the term…
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).
Claims12
A swivel joint for interconnecting two lengths of pipe, comprising an inner annular member adapted, in use, to be connected to a first length of pipe, an outer annular member co-axial with the inner annular member and adapted, in use, to be connected to a second length of pipe, an annular chamber defined between the inner and outer annular members, bearing means positioned within the annular chamber and locating the inner and outer annular members for rotary movement relative to one another, and pump means located within the annular chamber for circulating lubricant within the annular chamber, said pump means comprising an eccentric ring which is disposed within the annular chamber defined between the inner annular member and the outer annular member and which is rotatably driven within the annular chamber by relative rotary movement between the inner annular member and the outer annular member.
A method of lubricating the bearings of a swivel joint for interconnecting two lengths of pipe, in which relative rotary movement between an inner annular member connected to one of said pipes and an outer annular member connected to the other of said pipes is employed to drive a pump means comprising eccentric ring means located within an annular chamber defined between the inner annular member and the outer annular member and thereby circulate lubricant around the annular chamber and into the bearings said relative rotary motion of the inner annular member and the outer annular member being utilized to rotate said eccentric ring means within the annular chamber so that lubricant is circulated around the annular chamber and into the bearings.
A swivel joint for interconnecting two lengths of pipe, comprising an inner annular member adapted, in use, to be connected to a first length of pipe, an outer annular member co-axial with the inner annular member and adapted, in use, to be connected to a second length of pipe, an annular chamber defined between the inner and outer annular members, bearing means positioned within the annular chamber and locating the inner and outer annular members for rotary movement relative to one another, and pump means located within the annular chamber for circulating lubricant within the annular chamber, said pump means being driven by relative oscillatory movement between the inner annular member and the outer annular member.
Dependencies are inferred from the claim text.