Fluid sprinkling – spraying – and diffusing – With fixed support for or ground installed supply means – Embedded or buried sprinkler
Reexamination Certificate
2005-07-26
2005-07-26
Hwu, Davis (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With fixed support for or ground installed supply means
Embedded or buried sprinkler
C239S200000, C239S201000, C239S204000, C239S205000, C239S206000
Reexamination Certificate
active
06921029
ABSTRACT:
A method and apparatus for reducing the effective precipitation rate of an irrigation sprinkler during an irrigation cycle without disrupting the supply of pressurized water from the source opening and closing the inlet to the sprinkler riser at timed intervals through the use of a flow stop valve assembly disposed at the base of the riser, and which includes a lost motion piston and cylinder assembly and first and second flow control devices which control the time the flow stop valve is in the open and closed conditions during the irrigation cycle.
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Rain Bird Product Literature entitled “Landscape Irrigation Products 2001-2002 Catalog” (2 pages).
Fitch Even Tabin & Flannery
Hwu Davis
Rain Bird Corporation
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