JPS61145778U - - Google Patents

Info

Publication number
JPS61145778U
JPS61145778U JP2907485U JP2907485U JPS61145778U JP S61145778 U JPS61145778 U JP S61145778U JP 2907485 U JP2907485 U JP 2907485U JP 2907485 U JP2907485 U JP 2907485U JP S61145778 U JPS61145778 U JP S61145778U
Authority
JP
Japan
Prior art keywords
boom
amount
detection roller
detected
directly below
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
JP2907485U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP2907485U priority Critical patent/JPS61145778U/ja
Publication of JPS61145778U publication Critical patent/JPS61145778U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Jib Cranes (AREA)
JP2907485U 1985-02-28 1985-02-28 Pending JPS61145778U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2907485U JPS61145778U (enrdf_load_stackoverflow) 1985-02-28 1985-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2907485U JPS61145778U (enrdf_load_stackoverflow) 1985-02-28 1985-02-28

Publications (1)

Publication Number Publication Date
JPS61145778U true JPS61145778U (enrdf_load_stackoverflow) 1986-09-08

Family

ID=30527553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2907485U Pending JPS61145778U (enrdf_load_stackoverflow) 1985-02-28 1985-02-28

Country Status (1)

Country Link
JP (1) JPS61145778U (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009256088A (ja) * 2008-04-21 2009-11-05 Furukawa Unic Corp 多段伸縮ブーム用ブーム長検出装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009256088A (ja) * 2008-04-21 2009-11-05 Furukawa Unic Corp 多段伸縮ブーム用ブーム長検出装置

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