JPS646573Y2 - - Google Patents

Info

Publication number

JPS646573Y2

JPS646573Y2 JP10447983U JP10447983U JPS646573Y2 JP S646573 Y2 JPS646573 Y2 JP S646573Y2 JP 10447983 U JP10447983 U JP 10447983U JP 10447983 U JP10447983 U JP 10447983U JP S646573 Y2 JPS646573 Y2 JP S646573Y2

Authority

JP

Japan

Prior art keywords

leg holder

mast

upper wall

mast support

support tube

Prior art date

1983-07-04

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

• 238000003780 insertion Methods 0.000 claims description 7
• 230000037431 insertion Effects 0.000 claims description 7
• 238000003466 welding Methods 0.000 description 7
• 238000005260 corrosion Methods 0.000 description 4
• 230000007797 corrosion Effects 0.000 description 4
• 230000003014 reinforcing effect Effects 0.000 description 3
• JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
• 238000004381 surface treatment Methods 0.000 description 2
• 230000003811 curling process Effects 0.000 description 1
• 230000000149 penetrating effect Effects 0.000 description 1
• 230000002093 peripheral effect Effects 0.000 description 1