JPS6216917B2 - - Google Patents

Info

Publication number
JPS6216917B2
JPS6216917B2 JP17325581A JP17325581A JPS6216917B2 JP S6216917 B2 JPS6216917 B2 JP S6216917B2 JP 17325581 A JP17325581 A JP 17325581A JP 17325581 A JP17325581 A JP 17325581A JP S6216917 B2 JPS6216917 B2 JP S6216917B2
Authority
JP
Japan
Prior art keywords
boom
tip
pin
spring
cylinder device
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.)
Expired
Application number
JP17325581A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5874493A (ja
Inventor
Toshihiro Nakajo
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.)
Furukawa Unic Corp
Original Assignee
Unic Corp
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 Unic Corp filed Critical Unic Corp
Priority to JP56173255A priority Critical patent/JPS5874493A/ja
Publication of JPS5874493A publication Critical patent/JPS5874493A/ja
Publication of JPS6216917B2 publication Critical patent/JPS6216917B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
JP56173255A 1981-10-28 1981-10-28 ブ−ム伸縮装置 Granted JPS5874493A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56173255A JPS5874493A (ja) 1981-10-28 1981-10-28 ブ−ム伸縮装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56173255A JPS5874493A (ja) 1981-10-28 1981-10-28 ブ−ム伸縮装置

Publications (2)

Publication Number Publication Date
JPS5874493A JPS5874493A (ja) 1983-05-04
JPS6216917B2 true JPS6216917B2 (en, 2012) 1987-04-15

Family

ID=15957045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56173255A Granted JPS5874493A (ja) 1981-10-28 1981-10-28 ブ−ム伸縮装置

Country Status (1)

Country Link
JP (1) JPS5874493A (en, 2012)

Also Published As

Publication number Publication date
JPS5874493A (ja) 1983-05-04

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