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:
May. 17, 2011
Filed:
Aug. 14, 2008
George L. Sesser, Walla Walla, WA (US);
Craig B. Nelson, Walla Walla, WA (US);
Reid A. Nelson, Walla Walla, WA (US);
Lee A. Perkins, Lowden, WA (US);
George L. Sesser, Walla Walla, WA (US);
Craig B. Nelson, Walla Walla, WA (US);
Reid A. Nelson, Walla Walla, WA (US);
Lee A. Perkins, Lowden, WA (US);
Nelson Irrigation Corporation, Walla Walla, WA (US);
Abstract
A rotary, nutating sprinkler head includes a housing supporting a nozzle tube extending in a downstream direction, concentric with a vertical center axis of the sprinkler head; a spool assembly loosely supported on the starter tube, the spool assembly including a double-flanged spool and a water-deflection plate carried by the spool, the water-deflection plate formed with one or more grooves shaped to cause the spool assembly to rotate when impinged upon by a stream emitted from the starter tube; wherein one of the starter tube and the spool is provided with at least one tilting lug located to maintain the spool assembly in a tilted or angularly offset orientation relative to the vertical center axis, thereby facilitating a wobbling action of the spool assembly during rotation.