Hydraulic sequencing valve

Details Hydraulic sequencing valve Hydraulic sequencing valve

1980-09-30

1982-07-27

Nilson, Robert G.

Motors: expansible chamber type

Cutoff after single complete cycle

Reversal responsive to motive fluid pressure change

91517, 172209, 172225, F15B 1115, A01B 330

Patent

active

043411487

ABSTRACT:
There is disclosed a new and improved hydraulic sequencing valve of the type which includes a movable valve spool within the body to sequence operation of the valve. An aperture through one spool or chamber is arranged for direct fluid communication with a tank port upon initial movement of the spool to increase the differential fluid pressure across the chambers and accelerate the sequencing movement of the spool.

REFERENCES:
patent: 2927558 (1960-03-01), Smilges
patent: 3665810 (1972-05-01), Parrett
patent: 3679179 (1972-07-01), Praddaude
patent: 3799032 (1974-03-01), Honeycutt
patent: 3817154 (1974-06-01), Martin
patent: 3955478 (1976-05-01), Feucht
patent: 4206685 (1980-06-01), Pusch
patent: 4207951 (1980-06-01), Wilcox
patent: 4300584 (1981-11-01), Kosarzecki

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