JPH0318236U - - Google Patents

Info

Publication number

JPH0318236U

JPH0318236U JP7923989U JP7923989U JPH0318236U JP H0318236 U JPH0318236 U JP H0318236U JP 7923989 U JP7923989 U JP 7923989U JP 7923989 U JP7923989 U JP 7923989U JP H0318236 U JPH0318236 U JP H0318236U

Authority

JP

Japan

Prior art keywords

screw rod

rotation

lock pin

leader

shaft

Prior art date

1989-07-04

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.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000009412 basement excavation Methods 0.000 claims description 3
• 239000003638 chemical reducing agent Substances 0.000 claims description 2
• 230000037431 insertion Effects 0.000 description 1
• 238000003780 insertion Methods 0.000 description 1
• 239000000725 suspension Substances 0.000 description 1

Cited By (2)