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:
Apr. 28, 1987
Filed:
Sep. 18, 1985
Barton R Nelson, Walla Walla, WA (US);
Larry P Meyer, Walla Walla, WA (US);
George L Sesser, Walla Walla, WA (US);
Nelson Irrigation Corporation, Walla Walla, WA (US);
Abstract
A rotary sprinkler head comprising a sprinkler body devoid of any operative dynamic seals for communicating a source of water under pressure with an outlet for directing water under pressure communicated therewith into an atmospheric condition in a primary stream having a generally vertically extending axis. A rotary distributor is provided which has surfaces for engaging the primary stream (1) to establish a reactionary force component acting on the distributor in a direction tangential to the rotational axis thereof so as to effect rotational movement thereof about its axis of rotation and (2) to direct the primary stream engaged thereby in the form of a pattern forming stream or streams including at least one stream moving away from the distributor in a direction having a substantial component extending outwardly from the generally vertical axis of the primary stream so as to define the radius of the circular spray pattern. A speed reducing assembly is operatively associated with the distributor for reducing the rotational speed of the distributor resulting from the reactionary force component from a relatively high whirling speed which would occur without the speed reducing assembly to a relatively slow speed.