Fluid handling – Systems – Multi-way valve unit
Patent
1985-10-25
1986-12-09
Jones, Larry
Fluid handling
Systems
Multi-way valve unit
13762527, 13762566, 251 32, F16K 3500, F15B 1342
Patent
active
046274677
ABSTRACT:
Directional control valve includes a manually operated pilot valve stage and a hydraulically operated power valve stage to isolate the pilot valve stage from the effects of the high axial flows passing through the power valve stage. The pilot valve is spring loaded in the stow direction as long as the directional control valve is disconnected from system pressure. Such spring also acts as a stowed condition linkage pre-tensioner to avoid fretting of various parts during vibration conditions and the like. When system pressure is applied to the directional control valve, such preload is automatically removed from the pilot valve for ease of movement between the stow and deploy positions by a relatively low manual input rotary force.
REFERENCES:
patent: 3188149 (1965-06-01), Pekril
patent: 3230841 (1966-01-01), York
patent: 3465649 (1969-09-01), Eggers et al.
patent: 3519019 (1970-07-01), Rieschel
patent: 3540480 (1970-11-01), Leibfritz
patent: 3568717 (1971-03-01), Plate
patent: 3618984 (1971-11-01), Coolz
patent: 3640146 (1972-02-01), Barnes
patent: 3746401 (1973-07-01), Stearns
patent: 3776101 (1973-12-01), Nussbaumer
patent: 3805670 (1974-04-01), Fallows
patent: 3866880 (1975-02-01), Schexnayder
patent: 3935792 (1976-02-01), Dezelan et al.
patent: 3939870 (1976-02-01), Giugliano
patent: 4007666 (1977-02-01), Bauer et al.
patent: 4263938 (1981-04-01), Peters
patent: 4461449 (1984-07-01), Turner
Jones Larry
Pneumo Corporation
Price Carl D.
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