Title:
PENETRATION AND CONVECTION PIPE DEVICE FOR DRAINAGE AND IRRIGATION
Document Type and Number:
WIPO Patent Application WO/2009/033354
Kind Code:
A1
Abstract:
A penetration and convection pipe device for drainage and irrigation, includes
an outer pipe (1), an inner pipe and a connector, wherein the inner pipe is arranged
in the outer pipe, an outer slot (12) for drainage and irrigation is located between
the outer pipe and the inner pipe, and an inner slot (21) for drainage and irrigation
is located in the interior of the inner pipe. The inner pipe can be triangle inner
pipe (2, 23) or rectangle inner pipe (3, 31). Apertures (11) for drainage and irrigation
are arranged on the circumference of the outer pipe, the side wall and the bottom
of the inner pipe, wherein the apertures on the side wall ofthe inner pipe connect
the inner slot with the outer slot for drainage and irrigation, and the apertures
on the bottom of the inner pipe communicate with the apertures on the circumference
of the outer pipe. The pipe device has double functions for drainage and irrigation.
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Inventors:
CHEUNG CHUNG YAU (CN)
Application Number:
PCT/CN2008/001482
Publication Date:
March 19, 2009
Filing Date:
August 18, 2008
Export Citation:
Assignee:
CHEUNG CHUNG YAU (CN)
International Classes:
A01G25/06; E02B11/00
Foreign References:
| CN101067313A | 2007-11-07 | |||
| CN101091448A | 2007-12-26 | |||
| CN200987308Y | 2007-12-12 | |||
| CN201068541Y | 2008-06-04 | |||
| CN201068550Y | 2008-06-04 | |||
| CN201064743Y | 2008-05-28 | |||
| CN201068542Y | 2008-06-04 | |||
| CN201011797Y | 2008-01-30 | |||
| US4904112A | 1990-02-27 | |||
| JPS61179912A | 1986-08-12 | |||
| JPH0892947A | 1996-04-09 | |||
| US5660008A | 1997-08-26 |
Attorney, Agent or Firm:
GUANGZHOU NANFENG PATENT AGENT LIMITED (N0. 100Xianlie Road, M, Guangzhou 0, CN)
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