Hydraulic control device

Details Hydraulic control device Hydraulic control device

1991-04-25

1993-03-09

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

91420, 91463, 60460, 60461, 60466, 60469, F15B 1108

Patent

active

051918269

ABSTRACT:
In the case of a hydraulic control device for an oscillating load moving system comprising a double-acting hydroconsumer (V), which is adapted to be selectively connected to a pressure source (P) or to a reservoir (T) via two separate main lines (9, 10) and a control valve (C), and further comprising a load supporting valve (H), which is arranged in at least one main line (10) between the control valve (C) and the hydroconsumer (V) and which is adapted to be opened from the other main line (9) via a pilot line (16), a damping device (X), which consists of a bypass line (23) and an interference throttle aperture (D2), is connected to the pilot line (16) of the load supporting valve (H). The pilot line (16) has provided therein a throttle aperture (D1) which is smaller than the interference throttle aperture (D2).

REFERENCES:
patent: 4732076 (1988-03-01), Ewald
patent: 4969562 (1990-11-01), Saotome
patent: 5034892 (1991-07-01), Saotome

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