Casingless pile method and apparatus

Details Casingless pile method and apparatus Casingless pile method and apparatus

1975-10-14

1977-09-06

Taylor, Dennis L.

61 535, 61 5352, E02D 536

Patent

active

040459667

ABSTRACT:
After a hole has been wet-drilled with mud left in, a hollow mandrel with an inflatable bladder is inserted into the bottom of the hole. The bladder is inflated so as to seal against the sides of the hole and concrete is pumped into the hole below the bladder seal to force the mandrel with the inflated bladder thereon upwardly through the hole.

REFERENCES:
patent: 2071047 (1937-02-01), Smith
patent: 2162108 (1939-06-01), Newman
patent: 3141534 (1964-07-01), Dunston
patent: 3164963 (1965-01-01), Talley et al.
patent: 3164964 (1965-01-01), Josephson
patent: 3209546 (1965-10-01), Lawton
patent: 3303244 (1967-02-01), Talley et al.
patent: 3324665 (1967-06-01), Robichaux et al.
patent: 3434294 (1969-03-01), Hall

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