Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-05-18
1985-04-23
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 1, 277 95, 277105, 264295, 2642974, 2642975, 264320, F16J 1518, B29C 1704
Patent
active
045125864
ABSTRACT:
A packing arrangement for sealing an area about a shaft in a structural body includes a plurality of V-shaped packing rings in stacked alignment. The packing rings are made from a memory retainable material and preformed into the V-shaped configuration with a forming die. After being preformed, the V-shaped packing rings are compressed beyond their preformed configuration and placed in a packing chamber. The memory characteristics of the packing ring material are such that the rings are urged toward their preformed V-shape to compensate for any dimensional instability of the rings during thermal cycling. The packing rings also have a very small stack height and provide an increased number of sealing surfaces within a predetermined sealing area.
REFERENCES:
patent: 1956843 (1934-05-01), Wheeler
patent: 2132814 (1938-10-01), Wheeler
patent: 3032825 (1962-05-01), Proud
patent: 3069178 (1962-12-01), Rosen
patent: 3549445 (1970-12-01), McMahon
patent: 4171561 (1979-10-01), Bainard et al.
patent: 4335889 (1982-06-01), Cather et al.
John Crane V-Ring Packings, Bulletin No. P-420-2, 12 pp., no date.
Liles James D.
Ward Robert S.
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