Gland packing and sealing apparatus comprising it

Details Gland packing and sealing apparatus comprising it Gland packing and sealing apparatus comprising it

2006-03-14

2006-03-14

Peavey, Enoch (Department: 3673)

Seal for a joint or juncture

Seal for well apparatus

For below ground apparatus

C277S337000, C277S339000, C277S341000

Reexamination Certificate

active

07011312

ABSTRACT:
To provide a novel gland packing and a sealing apparatus comprising this, wherein the gland packing displays high and stable sealability for a stem and an inner wall surface of a stuffing box even for uses further requesting the movability (rotation and reciprocating movement), and further, gives excellent effects, such as decrease of moving resistance of a stem, shape stability, adaptability to a corroded and worn-out stem and stuffing box, function for receiving shafts, easiness of equipment, simplification of sealing structure, and compactness of a sealing apparatus. The gland packing, according to the present invention, is a ring packing of which the cross sectional shape is a quadrilateral, wherein both two edges at inner and outer diameter sides of the quadrilateral are parallel to a central axis of the gland packing, and wherein the other two edges have slopes of the same orientation as to an axis perpendicular to the central axis, with the gland packing being characterized in that an inner-diameter-side acute angle portion and an outer-diameter-side acute angle portion of the quadrilateral are made flat portions.

REFERENCES:
patent: 2400533 (1946-05-01), Buffington
patent: 4328974 (1982-05-01), White et al.
patent: 5165703 (1992-11-01), Morvant
patent: 5476271 (1995-12-01), Hatting et al.
patent: 7258 (1879-04-01), None
patent: 27 22 754 (1978-11-01), None
patent: 408870 (1934-04-01), None

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