JPH0316906Y2 - - Google Patents

Info

Publication number

JPH0316906Y2

JPH0316906Y2 JP12915585U JP12915585U JPH0316906Y2 JP H0316906 Y2 JPH0316906 Y2 JP H0316906Y2 JP 12915585 U JP12915585 U JP 12915585U JP 12915585 U JP12915585 U JP 12915585U JP H0316906 Y2 JPH0316906 Y2 JP H0316906Y2

Authority

JP

Japan

Prior art keywords

receiving

receiving frame

frame

manhole cover

fitting groove

Prior art date

1985-08-23

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

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• 229920001187 thermosetting polymer Polymers 0.000 claims description 6
• 239000011342 resin composition Substances 0.000 claims description 3
• 239000000463 material Substances 0.000 description 6
• 229910052751 metal Inorganic materials 0.000 description 5
• 239000002184 metal Substances 0.000 description 5
• 239000011347 resin Substances 0.000 description 4
• 229920005989 resin Polymers 0.000 description 4
• VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
• JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
• VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
• 238000005299 abrasion Methods 0.000 description 2
• 239000011521 glass Substances 0.000 description 2
• 238000001746 injection moulding Methods 0.000 description 2
• 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
• 235000011613 Pinus brutia Nutrition 0.000 description 1
• 241000018646 Pinus brutia Species 0.000 description 1
• 230000003796 beauty Effects 0.000 description 1
• NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
• 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
• 229910000019 calcium carbonate Inorganic materials 0.000 description 1
• 239000003086 colorant Substances 0.000 description 1
• 239000002131 composite material Substances 0.000 description 1
• 230000006866 deterioration Effects 0.000 description 1
• -1 etc. Substances 0.000 description 1
• 239000004744 fabric Substances 0.000 description 1
• 239000007769 metal material Substances 0.000 description 1
• 239000004576 sand Substances 0.000 description 1
• 239000010865 sewage Substances 0.000 description 1
• 239000000377 silicon dioxide Substances 0.000 description 1
• 229910001220 stainless steel Inorganic materials 0.000 description 1
• 239000010935 stainless steel Substances 0.000 description 1