High pressure bag

Details High pressure bag High pressure bag

1996-07-18

1997-11-04

Pascua, Jes F.

Flexible bags

With closure

For access opening in sidewall

383 3, 383109, 206522, 410119, B65D 3026

Patent

active

056831820

ABSTRACT:
A high pressure bag for pre-stressing a support pack in an underground mine has a fluid impervious liner and three tubular envelopes. The liner is located in the first envelope with end portions of the first envelope and edge strips of the liner folded over underneath the first envelope. The first envelope with the liner therein are in the second envelope, with end portions of the second envelope folded over on top of the second envelope. The second envelope is located within the third envelope which has opposed edges stitched closed. The liner has a nozzle which extends through openings in the envelopes.

REFERENCES:
patent: 3199689 (1965-08-01), Feldkamp
patent: 3414140 (1968-12-01), Feldkamp
patent: 3426891 (1969-02-01), Marks
patent: 3556318 (1971-01-01), Hollis
patent: 3667625 (1972-06-01), Lucas
patent: 3808981 (1974-05-01), Shaw
patent: 3868026 (1975-02-01), Baxter
patent: 4136788 (1979-01-01), Robbins

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