Title:
DRAIN PLATE
Document Type and Number:
Japanese Patent JP2893025
Kind Code:
B2
Abstract:
PURPOSE: To improve capacity for collecting water and drainage, prevent drain holes from clogging, and reduce buoyancy due to water pressure, by providing a plurality of grooves lengthwise and crosswise, a plurality of conical holes, and a plurality of funnel shaped holes on the surface and the back of a formed body.
CONSTITUTION: A plurality of grooves 2, 2, 3, 3 are respectively lengthwise and crosswise provided on the surface and the back of a formed body, and conical holes 4, 4 penetrating both faces are provided on the crossing parts of the grooves 2, 3. This hole 4 is formed so as to conically spread out toward the back, and the bottom face of the groove 2 provided on the surface side is formed into a projecting shape. In addition, funnel shaped holes 6,... which penetrate through both faces and spread out toward both faces are provided on the surface and the back of the formed body. The whole face of this drain plate 1, namely, the surface and the back and opposed a pair of sides, are sheath-likely covered with a permeable sheet material or a sheet material formed out of a permeable sheet material and impermeable sheet material.
Inventors:
NAKAMURA TAKUZO
Application Number:
JP12082594A
Publication Date:
May 17, 1999
Filing Date:
April 22, 1994
Export Citation:
Assignee:
NAKAMURA BUTSUSAN JUGENGAISHA
KITANIPPON KAGAKU KOGYO KK
MITSUBISHI KAGAKU BII EE ESU EFU KK
KITANIPPON KAGAKU KOGYO KK
MITSUBISHI KAGAKU BII EE ESU EFU KK
International Classes:
E02B11/00; E02D31/02; E04B1/64; (IPC1-7): E02D31/02; E02B11/00; E04B1/64
Domestic Patent References:
| JP554649U | ||||
| JP516845U | ||||
| JP629211Y2 |
Attorney, Agent or Firm:
Kabe Abe