Swivel or rotating joint

Details Swivel or rotating joint Swivel or rotating joint

1990-01-11

1991-07-30

Arola, Dave W.

Pipe joints or couplings

With lubrication

285276, 184 31, F16L 700

Patent

active

050354485

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.

REFERENCES:
patent: 2434459 (1948-01-01), Dahlstrand
patent: 4234216 (1980-11-01), Swanson et al.
patent: 4789188 (1988-12-01), Seabrook et al.

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