Device for the controlling of a variable-moment vibrator

Details Device for the controlling of a variable-moment vibrator Device for the controlling of a variable-moment vibrator

1993-06-04

1995-05-02

Look, Edward K.

Power plants

Pressure fluid source and motor

Having means controlling or attenuating shock vibration,...

60484, 74 61, F16D 3102, F16H 6100

Patent

active

054108799

ABSTRACT:
The device embodying the invention uses a phase shifter controlled by a dual-effect hydraulic acting element comprising a phase shifting chamber connected to the distributor output via a circuit comprising a nonreturn valve and a hydraulic accumulator whose load pressure can be limited by means of a limiter and a rephasing chamber whose pressure is controlled by a pressure regulator so that a predetermined phase shift corresponds with each regulator control value. The invention applies notably to the driving into the ground of objects such as stakes or sheet piles.

REFERENCES:
patent: 3004389 (1961-10-01), Muller
patent: 4771645 (1988-09-01), Persson
patent: 5010778 (1991-04-01), Riedl
patent: 5177386 (1993-01-01), Shimada

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