JPS61125589U - - Google Patents

Info

Publication number

JPS61125589U

JPS61125589U JP892985U JP892985U JPS61125589U JP S61125589 U JPS61125589 U JP S61125589U JP 892985 U JP892985 U JP 892985U JP 892985 U JP892985 U JP 892985U JP S61125589 U JPS61125589 U JP S61125589U

Authority

JP

Japan

Prior art keywords

core

flushing fluid

drilling machine

tube

fluid passage

Prior art date

1985-01-25

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

• 238000005553 drilling Methods 0.000 claims description 7
• 239000012530 fluid Substances 0.000 claims description 6
• 238000011010 flushing procedure Methods 0.000 claims description 6
• 238000010586 diagram Methods 0.000 description 1