Pipe joints or couplings – With fluid pressure seal – Swivel with flange in socket
Patent
1985-06-03
1986-12-02
Arola, Dave W.
Pipe joints or couplings
With fluid pressure seal
Swivel with flange in socket
285276, 277188R, F16L 1706
Patent
active
046260030
ABSTRACT:
A constant motion swivel seal assembly having greatly improved useful life without leakage of fluid from a swivel joint. The seal assembly includes one or more annular sealing rings rotatably positioned between an outer joint member and an inner joint member. A wedge-shaped anti-extrusion ring mounted between the annular sealing ring and a gap between the inner and outer joint members prevents the sealing ring from extrusion into the gap. The anti-extrusion ring has a relatively large surface area in contact with the inner joint member and a relatively small surface area in contact with the outer joint member so the anti-extrusion ring remains in substantially the same position relative to the inner joint member. The relatively small area of contact between the outer joint member and the anti-extrusion ring allows the anti-extrusion ring to slide over the surface of the outer joint member as the outer joint member rotates relative to the inner joint member. Hoop stress also prevents fluid pressure from forcing the anti-extrusion ring radially outward against the outer joint member while fluid pressure axially presses the anti-extrusion ring tightly against an end portion of the inner joint member. A relatively small area of contact between the sealing ring and the inner member and a larger area of contact between the sealing ring and the outer member allows the sealing ring to slide over the inner member and rotate with the outer member.
REFERENCES:
patent: 2382375 (1945-08-01), Allen et al.
patent: 3727950 (1973-04-01), Swanson
patent: 3997198 (1976-12-01), Linder
patent: 4556223 (1985-12-01), Van Loon
Weber Neil G.
Williams Michael R.
Arola Dave W.
FMC Corporation
Guernsey L. B.
Megley R. B.
Stanley H. M.
LandOfFree
Constant motion swivel seal assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Constant motion swivel seal assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant motion swivel seal assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2289021