Mine support grout bags and grout packs
OwnerNils Mittet Skarböviginventor
Life of this patent
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Abstract
A grout bag assembly (1) is provided comprising an inflatable grout bag (2, 26, 34, 40) having a top (4, 42), bottom (6) and generally cylindrical sidewall (8) with an inlet (10) for fluent settable grout material. An inner bag (14, 28, 38) is attached to the grout bag such that upon filling of the grout bag the inner bag forms a generally axially extending separate compartment (18) within the grout bag. The inner bag preferably has a separate inlet (20) accessible from the exterior of the grout pack after the grout bag has been installed. The inner bag is generally attached to the inside of the grout bag such that a space of optionally varying radial size is formed between the inner surface of the grout bag and the outer surface of the inner bag.
Claims20
A grout bag assembly comprising an inflatable grout bag having a top, bottom and a generally cylindrical sidewall with an inlet for fluent settable grout material, the grout bag having, in an expanded condition, an axis extending between the top and bottom thereof,
- wherein the grout bag has an inner bag attached thereto wherein the grout bag and inner bag are arranged such that upon filling of the grout bag the inner bag forms a generally axially extending separate compartment within the grout bag.
Dependencies are inferred from the claim text.