Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1976-09-24
1978-06-27
Hix, L. T.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
354331, 13762418, G03D 308
Patent
active
040978842
ABSTRACT:
A method and apparatus for processing X-ray film comprising a processing tank having a port in its lower portion, three solenoid valves each having an outlet coupled to the port and operative to allow a developer solution, a fixer solution and water to flow through the respective valve, a drain solenoid valve having an inlet connected to the port and an outlet and being operative to allow working solutions to drain from its inlet to its outlet, sources of photographic developer solution and fixer solution for supplying developer solutin and fixer solution to the respective inlets of two of the valves, a source of water having an orifice connected to the inlet of the third valve, the water having a pressure which is in a predetermined range between a first pressure and a second pressure and being subject to variations, the orifice having a dimension sufficient to provide a turbulent flow of water to the tank when the water valve is open, and an electrical system for selectively supplying electrical signals to the valves to control the operation of the valves and to permit developer working solution, fixer working solution, or water to turbulently flow into or drain from the tank when the pressure is in the predetermined range.
REFERENCES:
patent: 2989911 (1961-06-01), Winnek
patent: 3672288 (1972-06-01), Deltoro
patent: 3842587 (1974-10-01), Strauss et al.
Lasky Daniel J.
Wright Philip R.
Adex Corporation
Hix L. T,.
Perkey William B.
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