发明名称 |
ADJUSTABLE SPRINKLER HEAD RISER |
摘要 |
<p>An apparatus for lengthening an extendible pipe comprised of first and second pipe portions having an interior includes a cylinder having an end wall and an open end connected to the first pipe portion. A piston is received in slidable and sealable engagement with the cylinder and is connected to the second pipe portion. The piston, cylinder and end wall define a chamber that is physically isolated from the interior of the pipe. Introduction of a control fluid into the chamber displaces the piston relative to the cylinder so as to lengthen the pipe. The apparatus above may be applied to a sprinkler head riser apparatus and buried as part of an in-ground sprinkler system.</p> |
申请公布号 |
WO2007112588(A1) |
申请公布日期 |
2007.10.11 |
申请号 |
WO2007CA00564 |
申请日期 |
2007.04.04 |
申请人 |
STEWART, DONALD GEORGE;VANDEKERCKHOVE, GEORDIE WAYNE |
发明人 |
STEWART, DONALD GEORGE;VANDEKERCKHOVE, GEORDIE WAYNE |
分类号 |
F15B15/16;A62C35/68;B05B15/10;F16L27/12 |
主分类号 |
F15B15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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