Packing for use in steel-pipe hydraulic testing apparatus

Details Packing for use in steel-pipe hydraulic testing apparatus Packing for use in steel-pipe hydraulic testing apparatus

1978-02-27

1979-04-17

Footland, Lenard A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 30, 277199, F16J 1502

Patent

active

041497317

ABSTRACT:
A packing for use in a steel-pipe hydraulic testing apparatus, consisting of: an annular body having an annular cut in its inner peripheral portion; a plurality of backing pieces fastened to the wall of the annular cut at a given circumferential spacing and directed in the radial direction; and a plurality of adapter pieces embedded in the inner peripheral walls of the annular body of the packing at a given circumferential spacing and exposed to the annular cut, so that the aforesaid plurality of backing pieces may be each slidable on the surfaces of a pair of adjoining adapter pieces. This packing is contracted due to a hydraulic pressure being applied to the outer periphery of the body of the packing, and as a result the respective adapter pieces will slide on the surfaces of the adapter pieces in the circumferential direction of the packing.

REFERENCES:
patent: 774709 (1904-11-01), Thompson
patent: 1060586 (1913-05-01), Clark
patent: 1331360 (1920-02-01), Parsons et al.
patent: 3464708 (1969-09-01), Hamilton

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