Penetration conductor pipe drive shoe

Details Penetration conductor pipe drive shoe Penetration conductor pipe drive shoe

1984-10-15

1987-04-14

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

405253, 405231, 175403, 175413, 175402, E02D 714

Patent

active

046574417

ABSTRACT:
An improved drive shoe is shown for installation on the penetrating end of a string of conductor pipe, for improving driving penetration through soil. The improved shoe has a reinforced cylindrical driving section. A symmetrical, toothed beveled penetration end improves penetration through loose and unconsolidated media, and minimizes displacement resistance by symmetrically displacing soil to both the inner bore of the conductor pipe and externally along the outer surface of the conductor pipe. A repeating pattern of straight exterior vertical bar segments breaks up the exterior soil, easing passage of the conductor pipe through the soil. A spiral inner bar section within the drive shoe breaks adhesion of the center soil plug to the bore of the conductor pipe by imparting a loosening and a twisting moment to the core plug. The result is a significantly deeper drive distance for a conductor pipe equipped with the improved shoe before driving must be stopped and the core material drilled out of the conductor pipe.

REFERENCES:
patent: 228467 (1880-06-01), Maclay
patent: 1110284 (1914-09-01), Bienhoff
patent: 1290412 (1919-01-01), Trakimas
patent: 2022194 (1935-11-01), Galvin
patent: 2874547 (1959-02-01), Fiore et al.
patent: 3331455 (1967-07-01), Anderson et al.
patent: 3384188 (1968-05-01), Bodine
patent: 3633688 (1972-01-01), Bodine

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