Patent
1974-11-04
1976-12-07
Shapiro, Jacob
61 98, 61 53, E02D 544
Patent
active
039954382
ABSTRACT:
A plurality (preferably six) pistons and cylinders are suspended from the swage block a precise distance below the upper edge and actuatable radially from the longitudinal axis of a tubular member for making a new pile with anchor knobs for increased load carrying capacity and pull-out resistance.
REFERENCES:
patent: 2036793 (1936-04-01), Christie
patent: 2168459 (1939-08-01), Upson
patent: 2933898 (1960-04-01), Upson
patent: 3375670 (1968-04-01), Serota
patent: 3382680 (1968-05-01), Takano
Nichols Theron H.
Ries C. G.
Shapiro Jacob
Texaco Inc.
Whaley T. H.
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