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:
Jun. 17, 1986
Filed:
Mar. 22, 1985
Michael Cherundolo, Upland, CA (US);
Charles A McMillen, Alta Loma, CA (US);
Rain Bird Sprinkler Mfg. Corp., Glendora, CA (US);
Abstract
A reaction drive sprinkler including an improved drive nozzle assembly for rotating the sprinkler in steps about a water supply standpipe. The drive nozzle assembly comprises a fixed drive nozzle through which an inclined stream of irrigation water is projected for passage through a diverter tube mounted in front of the drive nozzle for movement between forward- and reverse-drive positions. The diverter tube is shifted between the forward- and reverse-drive positions by a spring-loaded, over-center reversing mechanism for slightly diverting the water stream for alternated interruption by a pair of laterally oppositely angled deflector spoons on a pivoting reaction drive arm. More particularly, the diverter tube directs the water stream for cyclic interruption by one of the deflector spoons to rotate the sprinkler stepwise in a forward rotational direction through a selected arcuate path and then shifts the diverter tube to direct the water stream for interruption by the other deflector spoon for stepwise sprinkler rotation in the reverse direction. Axially offset surface discontinuities within the diverter tube interact with the water stream to impart laterally directed forces to the diverter tube during movement between the forward- and reverse-drive positions to prevent the diverter tube from stalling in a neutral or centered position.