JPS6231480Y2 - - Google Patents

Info

Publication number

JPS6231480Y2

JPS6231480Y2 JP8770583U JP8770583U JPS6231480Y2 JP S6231480 Y2 JPS6231480 Y2 JP S6231480Y2 JP 8770583 U JP8770583 U JP 8770583U JP 8770583 U JP8770583 U JP 8770583U JP S6231480 Y2 JPS6231480 Y2 JP S6231480Y2

Authority

JP

Japan

Prior art keywords

frame

lid

water meter

scissor plate

joint frame

Prior art date

1983-06-07

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

• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
• 230000002093 peripheral effect Effects 0.000 claims description 9
• 238000003780 insertion Methods 0.000 claims description 5
• 230000037431 insertion Effects 0.000 claims description 5
• 239000004033 plastic Substances 0.000 claims description 3
• 230000008014 freezing Effects 0.000 description 4
• 238000007710 freezing Methods 0.000 description 4
• 238000009413 insulation Methods 0.000 description 4
• 230000000694 effects Effects 0.000 description 3
• 239000011810 insulating material Substances 0.000 description 2
• 238000010257 thawing Methods 0.000 description 2
• JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
• 229920006328 Styrofoam Polymers 0.000 description 1
• 238000005452 bending Methods 0.000 description 1
• 239000006260 foam Substances 0.000 description 1
• 238000012423 maintenance Methods 0.000 description 1
• 230000002265 prevention Effects 0.000 description 1
• 239000002689 soil Substances 0.000 description 1
• 239000008261 styrofoam Substances 0.000 description 1