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JPS5334255A - Rotational device of derrick boom - Google Patents

Rotational device of derrick boom

Info

Publication number
JPS5334255A
JPS5334255A JP10902676A JP10902676A JPS5334255A JP S5334255 A JPS5334255 A JP S5334255A JP 10902676 A JP10902676 A JP 10902676A JP 10902676 A JP10902676 A JP 10902676A JP S5334255 A JPS5334255 A JP S5334255A
Authority
JP
Japan
Prior art keywords
rotational device
derrick boom
derrick
boom
rotational
Prior art date
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
Application number
JP10902676A
Other languages
Japanese (ja)
Inventor
Kousaku Oono
Toomasu Richiyaadoson Jiyooji
Norishige Kasuga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON AIKIYAN KK
Original Assignee
NIPPON AIKIYAN KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NIPPON AIKIYAN KK filed Critical NIPPON AIKIYAN KK
Priority to JP10902676A priority Critical patent/JPS5334255A/en
Publication of JPS5334255A publication Critical patent/JPS5334255A/en
Pending legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
JP10902676A 1976-09-10 1976-09-10 Rotational device of derrick boom Pending JPS5334255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10902676A JPS5334255A (en) 1976-09-10 1976-09-10 Rotational device of derrick boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10902676A JPS5334255A (en) 1976-09-10 1976-09-10 Rotational device of derrick boom

Publications (1)

Publication Number Publication Date
JPS5334255A true JPS5334255A (en) 1978-03-30

Family

ID=14499708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10902676A Pending JPS5334255A (en) 1976-09-10 1976-09-10 Rotational device of derrick boom

Country Status (1)

Country Link
JP (1) JPS5334255A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04349981A (en) * 1991-05-29 1992-12-04 Kyokuto Kaihatsu Kogyo Co Ltd Selection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04349981A (en) * 1991-05-29 1992-12-04 Kyokuto Kaihatsu Kogyo Co Ltd Selection device

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