1
Edwin J Green: Underground irrigation system. Lyon & Lyon, March 30, 1976: US03946762 (43 worldwide citation)

An irrigation or drainage system is provided comprising one or more conduits having radially positioned spaced apertures in the walls thereof, the system being otherwise closed except for an inlet/outlet aperture. The exterior of the conduits is covered by a snugly fitting fine mesh fabric sheath wh ...


2
Carroll W McDonald: Underground irrigation system. February 27, 1990: US04904112 (22 worldwide citation)

An inner pipe having a plurality of apertures on a top surface is connected to a pressurized water input source. The inner pipe is located within a slightly larger outer pipe and rests on a bottom inner surface of the outer pipe. The outer pipe is buried just below a plant root line. A series of lon ...


3
Ralph McEntyre: Underground percolation head and watering system. January 8, 1980: US04182583 (4 worldwide citation)

This invention relates generally to underground irrigation systems and more specifically to the specific equipment required by such systems in the form of pipes, covers, valves and the like. This invention provides a means by which existing conventional surface sprinkling systems may be easily conve ...


4
Pipeline systems. Kupex, May 22, 1974: GB1353820-A (3 worldwide citation)

1353820 Pipe couplings; pipe stoppers KUPEX AG 20 July 1971 [21 July 1970] 33866/71 Headings F2G and F2P In a pipeline system, e.g. an underground irrigation system connected to a mains water supply, successive lengths of plastics pipe are connected by a coupling in which a connecting ring 78 is com ...


5
Peter Olt: Autonomous system for injecting additives into irrigation water. May 7, 2013: US08434697 (2 worldwide citation)

Injection apparatus for automatically applying pest control concentrates and fertilizers into an existing underground irrigation system. Apparatus uses an electronic control system programmed to activate one or more injection pumps and to also operate the zonal flow control solenoids contained in an ...


6
Angelo L Mazzei: Subsurface water/air irrigation system with prevention of air lock. Donald D Mon, May 10, 2005: US06890126 (2 worldwide citation)

An underground irrigation system which supplies beneath the surface of the soil under or near the roots of a growing crop, water infused with micro bubbles of gas (usually air). A mixer/injector injects and mixes gas into water to form a mixed stream that flows from a header into a plurality of bran ...


7
Underground irrigation system using draining nozzles. Lacabarats Rene, Lacabarats Evelyne, Lacabarats Eric, February 12, 1988: FR2602528-A1 (2 worldwide citation)

The present invention relates to an underground irrigation system allowing either wetting of the land, or infiltration on site and discharge of the rainwater or surface water, via draining nozzles 1 thus limiting the phenomena of erosion of topsoil. It is made up of a draining layer 2 arranged on an ...


8
Wada Yasushi, Sakamoto Hiroaki, Ono Naoki: Underground irrigation system. Kubota Ci, October 9, 2008: JP2008-237135 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide an underground irrigation system preventing a water-supply pipe from causing siphon effect.SOLUTION: The underground irrigation system is provided with a water-supply pipe 12 and a laying pipe laid in a cultivated field: wherein the water-supply pipe 12 is provided w ...


9
Duane K Smith, Thomas A King, Scott L Blankley: Fittings for irrigation systems. April 10, 2018: US09938680

A fitting, for use in making a fluid connection with a pipe, generally includes a saddle adapted to couple the fitting to the pipe, and a tap integrally formed with the saddle and extending generally away from saddle. The tap is configured to press-fit into the pipe for establishing the fluid connec ...


10
Xue Wu Liu, Tian Li David Liu, Rui Li: Multifunctional underground irrigation system. July 3, 2018: US10010031

A multifunctional underground irrigation system comprises of an underground irrigation, fertilization and respiration (UIFR) device with three types of air/pressure releasing structures, an universal unique label and label reader, three irrigation monitoring indicators, various sample collecting cha ...