Eductor-mixer system
Patent 4186772 Issued on February 5, 1980. Estimated Expiration Date: 
May 31, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 31, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 05/801620 filed on 05/31/1977US Classes:137/891, Flow control by varying position of a fluid inlet relative to entrainment chamber137/893, Flow control means is located in aspirated fluid inlet241/39, Fluid comminutor type241/5, By utilizing kinetic energy of projected or suspended material366/163.2, By venturi or jet pump type device406/153, Suction induced by pressure stream417/197Peripheral motive fluid supplyExaminersPrimary: Nilson, Robert G.Attorney, Agent or FirmInternational ClassesB65G 53/34 (20060101)B65G 53/58 (20060101) F04F 5/46 (20060101) F04F 5/00 (20060101) B01F 5/04 (20060101) B01F 5/00 (20060101) A62C 31/00 (20060101) B01F 5/10 (20060101) A62C 31/12 (20060101) AbstractAn eductor-mixer system in which pressurized working fluid is discharged through a nozzle as a concentric, high speed jet flowing past the end of an inlet tube into a mixing chamber for generating a vacuum thereby to positively draw a pressure transportable material through the inlet tube and into the mixing chamber and for mixing with the working fluid to form a dispersion with the walls of the mixing chamber being spaced from the projected path of the jet. A bypass is disclosed for the flow of pressurized working fluid around the nozzle thereby to control the amount of material drawn into the eductor-mixer. A recycle system is also disclosed which withdraws a portion of the mixed dispersion and recirculates it through the nozzle for shearing as it passes through the nozzle. Additional material and/or working fluid may be added so as to vary the concentration level or quality of the resulting dispersion.Other References
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