JPH0225925Y2 - - Google Patents

Info

Publication number

JPH0225925Y2

JPH0225925Y2 JP6590185U JP6590185U JPH0225925Y2 JP H0225925 Y2 JPH0225925 Y2 JP H0225925Y2 JP 6590185 U JP6590185 U JP 6590185U JP 6590185 U JP6590185 U JP 6590185U JP H0225925 Y2 JPH0225925 Y2 JP H0225925Y2

Authority

JP

Japan

Prior art keywords

pin

ring

prevent

coming

earth

Prior art date

1985-05-03

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

• 230000008595 infiltration Effects 0.000 claims description 6
• 238000001764 infiltration Methods 0.000 claims description 6
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
• 239000004576 sand Substances 0.000 claims description 4
• 238000007789 sealing Methods 0.000 description 3
• 238000000034 method Methods 0.000 description 2
• 229910000831 Steel Inorganic materials 0.000 description 1
• 238000010276 construction Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 239000013013 elastic material Substances 0.000 description 1
• 238000005516 engineering process Methods 0.000 description 1
• 230000002265 prevention Effects 0.000 description 1
• 230000000284 resting effect Effects 0.000 description 1
• 239000010959 steel Substances 0.000 description 1
• 239000000126 substance Substances 0.000 description 1