Apparatus for expandably engaging the walls of an earthen hole

Details Apparatus for expandably engaging the walls of an earthen hole Apparatus for expandably engaging the walls of an earthen hole

1974-10-11

1976-06-15

Purser, Ernest R.

Static structures (e.g., buildings)

With piercing or expanding earth anchor

Laterally held, translating driven piercer

52159, 61 45B, 85 65, 166 63, F02D 574

Patent

active

039628370

ABSTRACT:
An apparatus is provided for expandably engaging the walls of an earthen hole in order to resist movement urged by an external force. After placement of the apparatus into an earthen hole at a location where some external force is to be restrained, the detonation of an explosive charge drives a piston out of an explosion chamber, and by a wedging action, forces an axially segmented cylinder outwardly against the surrounding earth. A substantially stable connecting foundation is thus created in order to resist either tensile or compressive forces.

REFERENCES:
patent: 787017 (1905-04-01), Witmer
patent: 1173806 (1916-02-01), Johson
patent: 1330233 (1920-02-01), Blackburn
patent: 1807488 (1931-05-01), Michalicek
patent: 1964610 (1934-06-01), Wagner
patent: 3118284 (1964-01-01), Cobi
patent: 3131544 (1964-05-01), Thornley
patent: 3214918 (1965-11-01), Binnings
patent: 3525187 (1970-08-01), Vincent

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