Water distribution system
Patent 4721408 Issued on January 26, 1988. Estimated Expiration Date: 
October 22, 2006. 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 22, 2006. 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 953080 1058582 1604189 2536196 3080124 Irrigation apparatus Monitor for an effluent disposal system Subsurface irrigation Flow restrictor In-line pipeline strainer InventorApplicationNo. 06/921389 filed on 10/22/1986US Classes:405/48, Open seam or shielded outlet210/435, Within flow line or flow line connected close casing210/459, Pipe or plate attached type405/36, DRAINAGE OR IRRIGATION405/40, At outlet or intake405/51Branched flowExaminersPrimary: Stodola, Nancy J.Attorney, Agent or FirmInternational ClassE02B 13/00 (20060101)AbstractAn improved water distribution system characterized by a construction including an irrifluent pipe disposed below the soil surface for dispersing water or treated waste water at a controlled rate. The irrifluent pipe includes an inner fluid conduit having apertures formed therethrough and an outer cover mounted in partially surrounding relation to the inner conduit and overlying the apertures. The outer cover is attached to the inner fluid conduit in spaced apart relation thereto so that the dispersed fluid slowly seeps into the ground.Field of SearchCorrugatedAt outlet or intake Uniform discharge Porous Flow through joint Including subsurface moisture barrier End cap Earthen bottom Control means responsive to sensed condition Riser or standpipe outlet or intake Having regulation of flow through channel Porous or apertured pipe, flume, or tileway Open seam or shielded outlet DRAINAGE OR IRRIGATION | |
