Hydraulically driven hammer system

Details Hydraulically driven hammer system Hydraulically driven hammer system

1974-09-19

1977-05-31

Maslousky, Paul E.

Motors: expansible chamber type

Moving cylinder

Cylinder and piston have relative reciprocation on fixed axis

91291, 94321, 13759614, 1376256, F01L 2506, F01B 718, F01B 1500

Patent

active

040261930

ABSTRACT:
A hydraulic pile driving hammer system is described which requires only a single pressure operated pilot to obtain switching for reversal of hydraulic forces at both ends of its stroke.

REFERENCES:
patent: 1430764 (1922-10-01), Smith
patent: 1709093 (1929-04-01), Farrell
patent: 2611391 (1952-09-01), Sainsbury et al.
patent: 2853057 (1958-09-01), McAuley
patent: 3322038 (1967-05-01), Dobson
patent: 3437011 (1969-04-01), Gelder
patent: 3552269 (1971-01-01), Arndt
patent: 3582039 (1971-06-01), Cagle

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