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:
Feb. 21, 1984
Filed:
May. 10, 1982
Kenneth J Bruninga, Mapleton, IL (US);
L. R. Nelson Corporation, Peoria, IL (US);
Abstract
An improvement in a pop-up sprinkler which comprises the provision of an upwardly facing annular valve seat in the lower portion of the housing assembly above the inlet therein and a valve member on the pop-up sprinkler head assembly in a position to engage the annular valve seat when the sprinkler head assembly is in its retracted storage position. The valve member is mounted on the sprinkler head assembly for biased movement independent of the movement of the sprinkler head assembly and the bias thereof provided by its weight and the return coil spring thereof so that the valve member will be separately moved out of engagement with the annular valve seat to permit passage of water under pressure into the housing assembly in response to the communication of the source of water under pressure with the inlet.