Load support

Details Load support Load support

1992-01-21

1992-09-01

Chin-Shue, Alvin C.

Supports

Props and braces

Adjustable length

405289, E21D 1500

Patent

active

051433400

ABSTRACT:
A support between the floor (22) and the roof (24) of e.g. a mine stope, is made by using an inflatable container comprising an inner bag (10), received in an outer bag (12). An inlet valve (14) extends through both bags as does a relatively higher pressure relief outlet valve (16). In use, air is pumped into the container until it is fully inflated, following by a grout, the air escaping via the valve (16) until the inner bag (10) is filled.

REFERENCES:
patent: 1752101 (1930-03-01), Meutsch
patent: 4036024 (1977-07-01), Dreker et al.

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