Fluid sprinkling – spraying – and diffusing – With fixed support for or ground installed supply means – Embedded or buried sprinkler
Reexamination Certificate
2010-02-23
2011-11-15
Hwu, Davis (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With fixed support for or ground installed supply means
Embedded or buried sprinkler
C239S200000
Reexamination Certificate
active
08056829
ABSTRACT:
A sprinkler pressure regulator module has a compact arrangement with a shiftable member having an upper cavity for receiving water flow debris, and a portion of a bypass valve may reciprocate therein. The module includes a stator plate directing water into a drive mechanism, such as a turbine drive mechanism. The shiftable member receives fluid flow from a radially outboard direction and is sealed with a cup portion receiving the shiftable member to define a cup cavity. A module exterior surface is separated from a sprinkler housing to define a vent cavity. A pressure release vent communicates with the cup cavity, a vent channel between the cup portion and the exterior surface, the vent cavity, and the exterior environment. The vent cavity and cup portion provide receptacles for debris deposit. Ribs around an opening of the vent channel with the vent cavity generally prevent debris from entering the vent channel.
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PEPCO Technical Bulletin, Medium Flow Regulator, PEPCO, Wade Rain Micro Irrigation Division, Fresno, California, undated, 2 pages.
Fitch Even Tabin & Flannery
Hwu Davis
Rain Bird Corporation
LandOfFree
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