Pile driving apparatus

Details Pile driving apparatus Pile driving apparatus

1977-10-28

1982-12-07

Staab, Lawrence J.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

173139, B25D 900

Patent

active

043622160

ABSTRACT:
A method of and apparatus for driving piles by the impact force delivered by a hammer disposed in a housing from the bottom end of which there extends downwardly a pile sleeve in which a pile anvil is held captive, in which shock absorbing means separate from the hammer are interposed between the bottom end of the housing and the pile anvil for absorbing rebounce forces reaching the top of the pile of lower magnitude to that of the impact force.
A pile driving apparatus constructed according to another aspect of the invention comprises a hammer and resilient means in the path of travel of the hammer for transmitting the impact force of the hammer to a pile, and stop means for cutting out the resilient effect of the resilient means on the impact force by delivering a non-resilient blow to the pile.

REFERENCES:
patent: 873517 (1907-12-01), De Witt
patent: 3417828 (1968-12-01), Duyster et al.
patent: 3498391 (1970-03-01), Guild et al.
patent: 3797585 (1974-03-01), Ludvigson
patent: 3975918 (1976-08-01), Jansz
patent: 3991833 (1976-11-01), Ruppert
patent: 4029158 (1977-06-01), Gerrish
patent: 4043405 (1977-08-01), Kuhn

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