Automatically driven pile driver drilling device

Details Automatically driven pile driver drilling device Automatically driven pile driver drilling device

1996-08-23

1999-10-05

Vo, Peter

Tool driving or impacting

Impacting devices

Selective axial direction of impact

175 19, B25D 900

Patent

active

059608927

ABSTRACT:
The invention relates to an automatically driven pile-driver drilling device for drilling into the earth with a percussion piston moving axially inside a casing, driven by a pressure medium and changeable from a forward stroke to a backstroke, with a working space having radial control openings, a guide pipe with radial control openings extending into the working space and forming a rigid part of the housing, and a control box guided into an annular chamber of the guide tube and axially adjustable in a spring-pneumatic manner.

REFERENCES:
patent: 4078619 (1978-03-01), Sudnishnikov
patent: 4171727 (1979-10-01), Tkach
patent: 4214638 (1980-07-01), Sudnishnikov
patent: 4250972 (1981-02-01), Schmidt
patent: 4295533 (1981-10-01), Schmidt
patent: 4683960 (1987-08-01), Kostylev
patent: 4708211 (1987-11-01), Shemyakin
patent: 4953626 (1990-09-01), Puttmann
patent: 5327636 (1994-07-01), Wilson

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