JPS6386151U - - Google Patents

Info

Publication number

JPS6386151U

JPS6386151U JP18008186U JP18008186U JPS6386151U JP S6386151 U JPS6386151 U JP S6386151U JP 18008186 U JP18008186 U JP 18008186U JP 18008186 U JP18008186 U JP 18008186U JP S6386151 U JPS6386151 U JP S6386151U

Authority

JP

Japan

Prior art keywords

manhole

adjustment ring

opening end

bolt insertion

insertion hole

Prior art date

1986-11-21

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000003780 insertion Methods 0.000 claims description 2
• 230000037431 insertion Effects 0.000 claims description 2
• 238000012856 packing Methods 0.000 description 3
• 239000002184 metal Substances 0.000 description 1