Method and device for driving a pile or the like into and out of

Details Method and device for driving a pile or the like into and out of Method and device for driving a pile or the like into and out of

1992-06-04

1994-05-10

Reese, Randolph a.

Hydraulic and earth engineering

Foundation

Columnar structure

405251, 405252, 405232, E02D 730

Patent

active

053102878

ABSTRACT:
Method and device for driving a pile (5) into and out of the ground. The device comprises a hammer (2) provided with a bush (8) protruding away from the hammer in an axial direction and being supported by the hammer and rotatable in relation thereto by remote control means (10). The inner surface of the bush (8) and the pile (5) to be extracted from the ground have been provided with locking dogs (11, 12 respectively). The bush (8) can be partially shoved and rotated onto the pile (5) in an axial direction, so that the top plane of the dogs (11) connected to the bush will come to lie beneath the bottom plane of the locking dogs (12) connected to the pile (5). Thereafter, the pile (5) can be driven out of the ground.

REFERENCES:
patent: 4365675 (1982-12-01), Mackinnon
patent: 4610571 (1986-09-01), Lees
patent: 4701077 (1987-10-01), Arentsen
patent: 5170850 (1992-12-01), Sassak, II

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