Boosted hydro-pneumatic drive

Details Boosted hydro-pneumatic drive Boosted hydro-pneumatic drive

1979-12-26

1981-11-17

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60563, 60565, 60593, F15B 700, F15B 1518

Patent

active

043003516

ABSTRACT:
In a boosted hydro-pneumatic drive for rapid traverse and power stroke, particularly for driving punching tools, a cylinder housing (1, 4) with partition (12), a disc piston (7) with plunger (8), a working piston (2) which can be loaded with compressed air for the return stroke and an annular piston (9) surrounding the plunger (8) are provided. The cylinder spaces between the working piston (2) and the annular piston (9) on both sides of the partition (12) are filled with hydraulic oil.

REFERENCES:
patent: 2827766 (1958-03-01), Hufferd
patent: 3426530 (1969-02-01), Georgelin
patent: 4072013 (1978-02-01), Barbareschi

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