JPH0452292Y2 - - Google Patents

Info

Publication number

JPH0452292Y2

JPH0452292Y2 JP10607787U JP10607787U JPH0452292Y2 JP H0452292 Y2 JPH0452292 Y2 JP H0452292Y2 JP 10607787 U JP10607787 U JP 10607787U JP 10607787 U JP10607787 U JP 10607787U JP H0452292 Y2 JPH0452292 Y2 JP H0452292Y2

Authority

JP

Japan

Prior art keywords

body frame

underground piping

spacer ring

underground

casing

Prior art date

1987-07-10

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
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• 125000006850 spacer group Chemical group 0.000 claims description 20
• 239000000463 material Substances 0.000 claims description 10
• 238000003780 insertion Methods 0.000 claims description 4
• 230000037431 insertion Effects 0.000 claims description 4
• JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
• 230000003449 preventive effect Effects 0.000 claims 1
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
• 238000009434 installation Methods 0.000 description 2
• 239000002184 metal Substances 0.000 description 2
• 229910052751 metal Inorganic materials 0.000 description 2
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
• 239000011384 asphalt concrete Substances 0.000 description 1
• 238000009933 burial Methods 0.000 description 1
• 239000004567 concrete Substances 0.000 description 1
• 210000005069 ears Anatomy 0.000 description 1
• 229910052742 iron Inorganic materials 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 239000004570 mortar (masonry) Substances 0.000 description 1