JPH0426591Y2 - - Google Patents

Info

Publication number

JPH0426591Y2

JPH0426591Y2 JP11660587U JP11660587U JPH0426591Y2 JP H0426591 Y2 JPH0426591 Y2 JP H0426591Y2 JP 11660587 U JP11660587 U JP 11660587U JP 11660587 U JP11660587 U JP 11660587U JP H0426591 Y2 JPH0426591 Y2 JP H0426591Y2

Authority

JP

Japan

Prior art keywords

opening

support plate

upper support

side wall

cylindrical side

Prior art date

1987-07-31

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Links

• Espacenet
• Global Dossier
• Discuss

• 239000004567 concrete Substances 0.000 claims description 11
• 239000013013 elastic material Substances 0.000 claims description 4
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
• 238000010276 construction Methods 0.000 description 8
• 239000011120 plywood Substances 0.000 description 6
• 239000012779 reinforcing material Substances 0.000 description 5
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
• 239000004035 construction material Substances 0.000 description 4
• 230000002093 peripheral effect Effects 0.000 description 4
• 229910052742 iron Inorganic materials 0.000 description 2
• 230000000694 effects Effects 0.000 description 1
• 238000005516 engineering process Methods 0.000 description 1
• 238000003780 insertion Methods 0.000 description 1
• 230000037431 insertion Effects 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 238000012856 packing Methods 0.000 description 1
• 239000011150 reinforced concrete Substances 0.000 description 1
• 238000007789 sealing Methods 0.000 description 1