JPH0244758B2 - - Google Patents

Info

Publication number
JPH0244758B2
JPH0244758B2 JP58003055A JP305583A JPH0244758B2 JP H0244758 B2 JPH0244758 B2 JP H0244758B2 JP 58003055 A JP58003055 A JP 58003055A JP 305583 A JP305583 A JP 305583A JP H0244758 B2 JPH0244758 B2 JP H0244758B2
Authority
JP
Japan
Prior art keywords
boom
oil
oil chamber
extension
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 - Lifetime
Application number
JP58003055A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58130889A (ja
Inventor
Susumu Nakamura
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 Kogyo Co Ltd
Original Assignee
Furukawa Kogyo Co 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 Furukawa Kogyo Co Ltd filed Critical Furukawa Kogyo Co Ltd
Priority to JP58003055A priority Critical patent/JPS58130889A/ja
Publication of JPS58130889A publication Critical patent/JPS58130889A/ja
Publication of JPH0244758B2 publication Critical patent/JPH0244758B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
  • Actuator (AREA)
  • Fluid-Pressure Circuits (AREA)
JP58003055A 1983-01-12 1983-01-12 ブ−ム伸縮装置 Granted JPS58130889A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58003055A JPS58130889A (ja) 1983-01-12 1983-01-12 ブ−ム伸縮装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58003055A JPS58130889A (ja) 1983-01-12 1983-01-12 ブ−ム伸縮装置

Publications (2)

Publication Number Publication Date
JPS58130889A JPS58130889A (ja) 1983-08-04
JPH0244758B2 true JPH0244758B2 (en, 2012) 1990-10-05

Family

ID=11546633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58003055A Granted JPS58130889A (ja) 1983-01-12 1983-01-12 ブ−ム伸縮装置

Country Status (1)

Country Link
JP (1) JPS58130889A (en, 2012)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512006U (en, 2012) * 1978-07-07 1980-01-25
JPS5815645B2 (ja) * 1978-09-27 1983-03-26 株式会社ユニツク シリンダ伸縮装置

Also Published As

Publication number Publication date
JPS58130889A (ja) 1983-08-04

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