JPH0293397U - - Google Patents

Info

Publication number

JPH0293397U

JPH0293397U JP178989U JP178989U JPH0293397U JP H0293397 U JPH0293397 U JP H0293397U JP 178989 U JP178989 U JP 178989U JP 178989 U JP178989 U JP 178989U JP H0293397 U JPH0293397 U JP H0293397U

Authority

JP

Japan

Prior art keywords

cylindrical wall

main body

segment

segment main

segments

Prior art date

1989-01-11

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

• 230000003014 reinforcing effect Effects 0.000 claims 1
• 229910000831 Steel Inorganic materials 0.000 description 1
• 230000037431 insertion Effects 0.000 description 1
• 238000003780 insertion Methods 0.000 description 1
• 230000002787 reinforcement Effects 0.000 description 1
• 239000010959 steel Substances 0.000 description 1