Title:
RAINWATER INFILTRATOR
Document Type and Number:
Japanese Patent JP3734223
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rainwater infiltrator withstanding long-term use while allowing water purification such as decomposition and elimination of a soluble organic substance and acceleration of water activity and eliminating a possibility of discharging a water activity accelerator from the inside of an insertion body in addition to the function of a conventional rainwater infiltrator which retains rainwater abundantly and effectively and reduces the rainwater slowly to the underground.
SOLUTION: In this rainwater infiltrator 1 disposed underground, a peripheral wall 4 is provided with a large number of small drain holes 5 enlarged in diameter toward the outdoor side from the indoor side, and the insertion body 9 is fitted into each small drain hole. The insertion body is made of synthetic resin with a hollow through hole, and the water activity accelerator is stored in the hollow through hole. Grid parts for preventing the outflow of the water activity accelerator are formed at an inlet part and an outlet part of the hollow through hole.
Inventors:
Eizo Takahashi
Application Number:
JP2003123321A
Publication Date:
January 11, 2006
Filing Date:
April 28, 2003
Export Citation:
Assignee:
Miyama Industry Co., Ltd.
International Classes:
E03F1/00; (IPC1-7): E03F1/00
Domestic Patent References:
| JP2000064405A |
Attorney, Agent or Firm:
Mikio Nishimura
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