JPS5637991A - Expansion device in multistage boom - Google Patents

Expansion device in multistage boom

Info

Publication number
JPS5637991A
JPS5637991A JP11228979A JP11228979A JPS5637991A JP S5637991 A JPS5637991 A JP S5637991A JP 11228979 A JP11228979 A JP 11228979A JP 11228979 A JP11228979 A JP 11228979A JP S5637991 A JPS5637991 A JP S5637991A
Authority
JP
Japan
Prior art keywords
expansion device
multistage boom
boom
multistage
expansion
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
JP11228979A
Other languages
Japanese (ja)
Inventor
Masaaki Inaoka
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.)
Shinmaywa Industries Ltd
Original Assignee
Shin Meiva Industry Ltd
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 Shin Meiva Industry Ltd filed Critical Shin Meiva Industry Ltd
Priority to JP11228979A priority Critical patent/JPS5637991A/en
Publication of JPS5637991A publication Critical patent/JPS5637991A/en
Pending legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
JP11228979A 1979-08-31 1979-08-31 Expansion device in multistage boom Pending JPS5637991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11228979A JPS5637991A (en) 1979-08-31 1979-08-31 Expansion device in multistage boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11228979A JPS5637991A (en) 1979-08-31 1979-08-31 Expansion device in multistage boom

Publications (1)

Publication Number Publication Date
JPS5637991A true JPS5637991A (en) 1981-04-11

Family

ID=14582956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11228979A Pending JPS5637991A (en) 1979-08-31 1979-08-31 Expansion device in multistage boom

Country Status (1)

Country Link
JP (1) JPS5637991A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340952A (en) * 1976-08-25 1978-04-13 Orenstein & Koppel Ag Running crane telescopic boom
JPS5449748A (en) * 1977-09-26 1979-04-19 Shin Meiwa Ind Co Ltd Streching device for multi-stage telescopic boom

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340952A (en) * 1976-08-25 1978-04-13 Orenstein & Koppel Ag Running crane telescopic boom
JPS5449748A (en) * 1977-09-26 1979-04-19 Shin Meiwa Ind Co Ltd Streching device for multi-stage telescopic boom

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