Vacuum filtration device
December 19, 2011. 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 D297860 3469369 Filtration apparatus Plastic vacuum suction funnel Filtering and particulate washing device Vacuum filter Pressure filter adapter and containment vessel Bottle top filter Vented cover assembly with filter insert for fluid reservoir Reusable filter unit with recoverable filter membrane InventorAssigneeApplicationNo. 811473 filed on 12/19/1991US Classes:210/188, WITH GAS SEPARATOR210/232, WITH REPAIR OR ASSEMBLING MEANS210/247, FILTRATE SPLASH PLATE AND/OR DEFLECTOR210/406, Vacuumized filtrate receiver210/416.1, With pump, gas pressure, or suction source210/436, Vented210/450, Gasket within casing or spaced removable end members210/472, Vented210/474, At upper edge of filtrate receiver210/477, Resting on internal stop or surface422/101Including means for separating a constituent; e.g., filter, condenser, extractor, etc.ExaminersPrimary: Hruskoci, Peter A.Attorney, Agent or FirmInternational ClassB01D 029/085AbstractThe vacuum filtration device has a disposable filter funnel and a disposable filtrate receptacle. The funnel and receptacle are used with a reusable base that is connected to a vacuum source. When the receptacle and funnel are mounted on the base the vacuum is applied through a connecting passage to the receptacle to draw the filtrate from the funnel into the receptacle.Field of SearchWITH GAS SEPARATORVacuumized filtrate receiver With pump, gas pressure, or suction source With flow controller for material being treated Attached to or within portable prefilt receiver Combining or dividing flow passages with filter in combined passage Vented Gasket within casing or spaced removable end members Internal fixed shoulder supporting filter element Within receptacle proper Vented At upper edge of filtrate receiver Resting on internal stop or surface WITH REPAIR OR ASSEMBLING MEANS FILTRATE SPLASH PLATE AND/OR DEFLECTOR Including means for separating a constituent; e.g., filter, condenser, extractor, etc. | |
