The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 1988
Filed:
Sep. 22, 1986
Donald W Smeller, Irvine, CA (US);
Stephen H Govero, Glendora, CA (US);
Rain Bird Sprinkler Mfg. Corp., Glendora, CA (US);
Abstract
An improved irrigation device is provided for precision, relatively low energy and close range delivery of irrigation water to crops and the like with little or no soil erosion. The irrigation device comprises a generally cylindrical body for connection to the lower end of a vertical drop tube adapted for connection in turn to a water supply pipe, for example, of a traveling irrigation system, such as a center pivot or linear system. The cylindrical body carries a downwardly open nozzle for discharge of water into a pressure-regulated chamber defined in part by a funnel-shaped regulator cover slidable about the cylindrical body. The chamber is shaped or otherwise includes means for dissipating a substantial portion of the flow energy of the water discharged into the chamber. Water collecting within the pressure-regulated chamber produces a low pressure head sufficient to float the regulator cover sufficently to create a narrow annular gap through which a thin bubble-like film or curtain of water is emitted at a regulated low pressure for close range delivery into a furrow between adjacent crop rows.