Pile driving mandrel

Details Pile driving mandrel Pile driving mandrel

1974-06-10

1976-10-12

Shapiro, Jacob

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 72R, E02D 730

Patent

active

039849929

ABSTRACT:
An expansible pile driving mandrel made up of two arcuate segments, each having a chordal stiffening web and a hydraulic cylinder carried by the web of one segment and passing the web of the other.

REFERENCES:
patent: 2871666 (1959-02-01), PIckman
patent: 3007318 (1961-11-01), Rusche
patent: 3064439 (1962-11-01), Cobi

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