Fluid handling – With repair – tapping – assembly – or disassembly means – Pressure regulating type valve
Reexamination Certificate
2005-08-04
2008-10-21
Hepperle, Stephen M (Department: 3753)
Fluid handling
With repair, tapping, assembly, or disassembly means
Pressure regulating type valve
C137S315110, C137S454200, C137S505250, C137S549000
Reexamination Certificate
active
07438083
ABSTRACT:
A pressure regulating apparatus is disclosed for use in an irrigation network. A pressure regulator may be combined with a filter unit in a single pipe to reduce components and joints in the irrigation network. A pipe may be provided having openings in its sides for receiving and securing a portion of the pressure regulator. The openings may be reference ports for a pressure sink, and the ports may include a porous filter material for preventing ingress of particulate matter while permitting gas to pass therethrough. The pressure regulator has a reciprocating valve member which may be sealed within a housing of the pressure regulator or with an inner surface of the pipe. The incoming water is first filtered and then it goes to the pressure regulator. The pressure regulator may be assembled as sequentially installed components.
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Photograph of Y-pipe filter assembly, retrieved Jan. 13, 2006 from the Internet at http://www.rainbird.com/images/products/drip/control/wyefilter—bg.jpg, illustrating a commercially available embodiment prior to Aug. 2, 2004, 1 page.
Fitch Even Tabin & Flannery
Hepperle Stephen M
Rain Bird Corporation
LandOfFree
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