Title:
RAINWATER FILTERING DEVICE FOR INFLOW PATH
Document Type and Number:
WIPO Patent Application WO/2011/052054
Kind Code:
A1
Abstract:
Collected rainwater is led to a rainwater containing section (11) by an inflow path (12). A water-permeable tube body (14) is provided in a vertically extending manner in the middle of a vertical pipe (13) located immediately before a position at which the rainwater flows into the rainwater containing section. A bag-like filter (16) having an open upper end and a closed lower end is contained in the tube body or covers the outer side of the tube body, and the bag-like filter (16) captures dust in the rainwater while allowing the rainwater to pass through the bag-like filter. A mounting and dismounting means (17) is provided to the vertical tube in order to dismount the tube body and the filter, which are provided to the vertical pipe, from the vertical pipe and to mount the tube body and the filter to the vertical pipe. The mounting and dismounting means has a rainwater guide pipe (26) detachably inserted with a gap into the upper part of the tube body, and a ring-like path (30) formed between the inner peripheral surface of the tube body and the outer peripheral surface of the rainwater guide tube is configured so that the amount of rainwater permitted to pass through the lateral cross-sectional area of the ring-like path (30) corresponds to the maximum amount of rainwater which passes through the inflow path. Even if the filter clogs to reduce the water permeability thereof, the ability of the inflow path, said ability being the ability for allowing rainwater to flow down through the inflow path, is not impaired largely, so that the rainwater filtering device always maintains rainwater collecting performance of a specific level.
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Inventors:
TAKAI SEIICHIRO (JP)
Application Number:
PCT/JP2009/068549
Publication Date:
May 05, 2011
Filing Date:
October 29, 2009
Export Citation:
Assignee:
TOTETU MFG CO LTD (JP)
TAKAI SEIICHIRO (JP)
TAKAI SEIICHIRO (JP)
International Classes:
E03F5/14
Foreign References:
| JPS62185777U | 1987-11-26 | |||
| JPH0581388U | 1993-11-05 | |||
| JPH0978639A | 1997-03-25 |
Attorney, Agent or Firm:
SUDA, MASAYOSHI (JP)
Masayoshi Suda (JP)
Masayoshi Suda (JP)
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