Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1977-04-22
1978-02-14
Oresky, Lawrence J.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
91412, 13759615, B65F 300
Patent
active
040733939
ABSTRACT:
A control system for operating fluid actuated components of a packer mechanism for a refuse collection vehicle comprising a fluid tank; a pump having an inlet communicating with the tank; a control valve having a main fluid passageway therethrough communicating at an inlet port thereof with the pump and at an outlet port thereof with the tank, a pilot fluid passageway therethrough communicating at an inlet port thereof with the pump and at an outlet port thereof with the tank, a first valve spool selectively operable for communicating the main fluid passageway with a component of the packer mechanism, the first spool being displaceable between a first position obstructing the pilot fluid passageway and a second position not obstructing the pilot fluid passageway, the first valve spool having a surface disposed normal to the axis thereof communicating with the pilot fluid passageway, and a second valve spool selectively operable for communicating the main fluid passageway with another component of the packer mechanism, the second valve spool being displaceable between a first position obstructing the pilot fluid passageway at a point thereof between the point of obstruction of the first valve spool and the outlet port of the pilot fluid passageway, and a second position not obstructing the pilot fluid passageway, the second valve spool having a surface disposed normal to the axis thereof communicating with the pilot fluid passageway; and means for shifting the valve spools into their second positions.
REFERENCES:
patent: 3233525 (1966-02-01), Stacey
patent: 3615028 (1971-10-01), Appleman
patent: 3760962 (1973-09-01), Clucker
McKenzie Roland W.
Stansberry Richard
Abraham George F.
City Tank Corporation
Oresky Lawrence J.
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