JPH0430921Y2 - - Google Patents

Info

Publication number

JPH0430921Y2

JPH0430921Y2 JP11702887U JP11702887U JPH0430921Y2 JP H0430921 Y2 JPH0430921 Y2 JP H0430921Y2 JP 11702887 U JP11702887 U JP 11702887U JP 11702887 U JP11702887 U JP 11702887U JP H0430921 Y2 JPH0430921 Y2 JP H0430921Y2

Authority

JP

Japan

Prior art keywords

seat

cylindrical body

inner cylindrical

bottom plate

rotation

Prior art date

1987-07-29

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

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• 230000037431 insertion Effects 0.000 claims description 5
• 239000004519 grease Substances 0.000 description 6
• 230000002093 peripheral effect Effects 0.000 description 5
• 229910000831 Steel Inorganic materials 0.000 description 4
• 239000010959 steel Substances 0.000 description 4
• 239000000463 material Substances 0.000 description 3
• 239000002184 metal Substances 0.000 description 3
• 238000003466 welding Methods 0.000 description 3
• 238000004080 punching Methods 0.000 description 2
• 239000011324 bead Substances 0.000 description 1
• 230000006835 compression Effects 0.000 description 1
• 238000007906 compression Methods 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 230000003014 reinforcing effect Effects 0.000 description 1
• 230000000452 restraining effect Effects 0.000 description 1