Hydraulic hammering apparatus

Details Hydraulic hammering apparatus Hydraulic hammering apparatus

1981-05-19

1983-05-10

Smith, James G.

Tool driving or impacting

Impacting devices

Selective axial direction of impact

173134, 173162R, 91 50, B25D 904

Patent

active

043824757

ABSTRACT:
This hydraulic hammering apparatus is so constructed that an upwardly opened fluid chamber is accommodated in a vertically movable manner within a longitudinal cylinder having a weight holding portion formed on the upper part of its top plate; the back of the top plate of the cylinder is sealingly connected with the opening of the fluid chamber by means of a diaphragm; water jet heads are provided oppositely to each other at the back of the top plate of the cylinder and the surface of the bottom plate of the fluid chamber respectively, said water jet heads being arranged to approach or space from each other in accordance with the vertical motion of the fluid chamber; and a hammering element is located between these water jet heads such that the upper and lower end parts of said element are sealingly fitted on or detached from the respective water jet heads.

REFERENCES:
patent: 3511325 (1970-05-01), Schmidt
patent: 3583499 (1971-06-01), Cordes
patent: 3788402 (1974-01-01), Chelminski
patent: 3920083 (1975-11-01), Makita
patent: 4098355 (1978-07-01), Gendron et al.
patent: 4214638 (1980-07-01), Sudnishnikov et al.
patent: 4284147 (1981-08-01), Jenne

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