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:
Jul. 14, 1998
Filed:
Aug. 21, 1996
Myrl Saarem, Carson City, NV (US);
Alan W Dawn, Murrieta, CA (US);
The Toro Company, Riverside, CA (US);
Abstract
A pop-up sprinkler which includes a housing, a riser in the housing movable between an extended position in which the riser extends from the housing and a retracted position in which the riser is retracted from the extended position and a pressure regulator in the riser. The pressure regulator can be constructed as a cartridge or separate unit and installed in the riser. The riser has an aperture adjacent the pressure regulator and the aperture is between first and second axially spaced seals in the extended position so as to reduce the likelihood of clogging of the aperture. A dirt tolerant wiper seal is mounted on a movable valve tube of the pressure regulator and a pressure activated seal is provided between a valve seat of the pressure regulator and the valve tube.