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US Patent 5076942 - Filter
US Patent Issued on December 31, 1991
Estimated Patent Expiration Date:
October 29, 2010Estimated 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.
Estimated Patent Expiration Date:
October 29, 2010Estimated 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.AbstractThe present invention relates to a method for filtering liquids. More particularly it is concerned with providing a clog-resistant filter of the kind in which a open end and with walls of metal, plastic or other suitable material bearing numerous perforations, is placed within a housing in such a manner that the liquid entering the housing must flow from the inside of the filter element out through the perforations in the latter, before it can leave the housing, with the result that solid material strained from the liquid flowing through the filter is retained within the filter element. | InventorsAssigneeApplicationNo. 605245 filed on 10/29/1990US Classes:210/791, Rehabilitating or regenerating filter medium210/419, Attached to or within portable prefilt receiver210/420, Selective directive flow relative to filter210/445, Clamped in casing joint210/448, Single open-end-type filter element210/452Single open-end-type filter elementField of Search210/791, Rehabilitating or regenerating filter medium210/797, By diverse fluid210/798, Reverse flow210/348, FILTER210/405, Movable prefilt distributor210/406, Vacuumized filtrate receiver210/416.1, With pump, gas pressure, or suction source210/416.4, For fuel system210/416.5, For lubricating or oil treating system210/417, Alternating oppositely opening liquid distributors210/418, With flow controller for material being treated210/419, Attached to or within portable prefilt receiver210/420, Selective directive flow relative to filter210/423, Attached unitary plural passage header210/428, Combining or dividing flow passages with filter in combined passage210/435, Within flow line or flow line connected close casing210/436, Vented210/445, Clamped in casing joint210/446Axially aligned inlet and outletExaminersPrimary: Sever, FrankAttorney, Agent or FirmUS Patent References4964984Blood filterIssued on: 10/23/1990 Inventor: Reeder, et al. International ClassesB01D 041/04449-456 472 407 409 Foreign Application Priority Data1989-07-28 IL |
