Backwashable liquid filter system using rotating spray
Patent 5667683 Issued on September 16, 1997. Estimated Expiration Date: 
October 19, 2015. 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.
October 19, 2015. 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 References 765534 1830098 2748944 3236249 3647071 3679136 Filter assembly with paper cartridge Self-flushing magnetic separtor Filter Pneumatic hydro-pulse filter system and method of operation InventorAssigneeApplicationNo. 545429 filed on 10/19/1995US Classes:210/409, Fluid cleaning210/416.1, With pump, gas pressure, or suction source210/420, Selective directive flow relative to filter210/427, Backwash210/448Single open-end-type filter elementExaminersPrimary: Reifsnyder, David A.Attorney, Agent or FirmInternational ClassB01D 029/68AbstractA liquid-cleaning filtering system has at least one permanent filter assembly that is capable of being promptly backwashed thus minimizing the down time of machinery. Each filter assembly utilizes a wire mesh filter cartridge which is backwashed by a powered internal rotating sprayer nozzle assembly that is operable to deliver a plurality of high pressure streams of liquid to a surface of the wire mesh. Each filter assembly is capable of being repeatedly used and then backwashed in order to return it to a pristine state. The rotating spray nozzle assembly may be powered by hydraulics, pneumatics or an electric motor. A plurality of filter assemblies may be arranged together in a fluid processing center in order to process large volumes of industrial waste. | |
