Hoses for irrigation by dripping and the like and the process to manufacture the same
Patent 4047995 Issued on September 13, 1977. Estimated Expiration Date: 
September 13, 1994. 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.
September 13, 1994. 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 2262493 2566833 3698195 3774850 3896999 InventorApplicationNo. 05/654542 filed on 02/02/1976US Classes:156/203, And edge-joining of one piece blank to form tube156/217, Bending of one piece blank and joining edges to form article156/290, Bonding of facing continuously contacting laminae at spaced points only156/582, Rotary239/542, CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATOR405/36, DRAINAGE OR IRRIGATION405/43Porous or apertured pipe, flume, or tilewayExaminersPrimary: Blunk, Evon C.Assistant: Mar, Michael Attorney, Agent or FirmInternational ClassA01G 25/02 (20060101)AbstractThe present invention refers to hoses for irrigation by dripping and the like and to the manufacturing processes for the same. Thin plastic film produces a hose which in a single unit lies flat while empty, and oval or round when water under pressure enters along the same. The characteristics of primary conduction derivation or draining, pressure reduction and exit by dripping and the like result from the simple act of sealing a plastic film while imprinting enclosure circuits of various shape on overlapped edge sections of the hose. | |
