Maintaining the shape of holes

Details Maintaining the shape of holes Maintaining the shape of holes

1978-04-07

1980-02-12

Stein, Mervin

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

E21D 1100

Patent

active

041881591

ABSTRACT:
In order to maintain the shape of a hole, such as a grave, dug in the ground, an inflatable bag is lowered into the hole and then inflated to a low pressure so as substantially to fill the hole, thus maintaining the sides of the hole against subsidence and also largely preventing water seeping into the hole. A protective cover is then placed over the hole and means are provided for anchoring this cover to the bag itself, which is wedged against the sides of the hole.

REFERENCES:
patent: 3357193 (1967-12-01), Fitzgibbon, Jr.

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