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. 03, 1980
Filed:
Oct. 10, 1978
Kenneth J Bruninga, Mapleton, IL (US);
L. R. Nelson Corporation, Peoria, IL (US);
Abstract
A step-by-step rotary sprinkler head having an impact arm with a drive spoon thereon. The drive spoon is preferably of the anti-backsplash type and includes a pull-in reactant surface and a drive-out reactant surface spaced radially and laterally outwardly of the pull-in reactant surface. The pull-in reactant surface has a slot formed in the central portion thereof for enabling a portion of the stream issuing from the sprinkler head outlet to continue its movement into the slot and outwardly therefrom without being deflected onto the drive-out surface when the drive spoon is in stream engagement so that the reactant force established on the drive-out surface is reduced in relation to that which would be established by the deflection of the entire stream thereon.