Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1981-09-25
1984-06-05
Levy, Stuart S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277188A, 166196, 251 1B, E21B 3302, B65D 5300, F16L 2102
Patent
active
044524633
ABSTRACT:
A sealing assembly for a packer includes a generally cylindrical elastomeric sealing element telescoped onto a mandrel between upper and lower expander heads. A sealing ring is disposed between each expander head and the sealing element at each end thereof for expanding radially outward toward engagement with the inside wall of a casing to keep the element from extruding between the expander heads and casing when setting the packer. A substantially non-expandable retaining ring surrounds the mandrel adjacent each of said sealing rings and an annular receptacle surrounds the mandrel and is located between each of the expander heads and the opposite ends of the sealing element. The receptacle has inner and outer malleable annular walls which are normally spaced radially outward from the mandrel and an end wall is integrally connected between these inner and outer walls so as to define an annular trough opening toward the sealing element. Extending into the trough is an annular protrusion which is integrally formed with the sealing element in each of the ends thereof so as to deform the inner walls radially inward into sealing engagement with the mandrel against elastomeric extrusion therebetween and so as to deform the outer walls radially outward into sealing engagement with the retaining ring against elastomeric extrusion therebetween when setting the packer.
REFERENCES:
patent: 1347351 (1920-07-01), Murray et al.
patent: 1381931 (1921-06-01), Ostrander
patent: 1836470 (1931-12-01), Humason et al.
patent: 2494598 (1950-01-01), Waring
patent: 3109493 (1963-11-01), Carter
patent: 4326588 (1982-04-01), McStravick
Doigan Lloyd D.
Dresser Industries Inc.
Levy Stuart S.
Peoples W. R.
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