JPS5484801A - Controll apparatus of oil pressure rock drill - Google Patents

Controll apparatus of oil pressure rock drill

Info

Publication number
JPS5484801A
JPS5484801A JP15253677A JP15253677A JPS5484801A JP S5484801 A JPS5484801 A JP S5484801A JP 15253677 A JP15253677 A JP 15253677A JP 15253677 A JP15253677 A JP 15253677A JP S5484801 A JPS5484801 A JP S5484801A
Authority
JP
Japan
Prior art keywords
oil pressure
rock drill
pressure rock
controll apparatus
controll
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.)
Granted
Application number
JP15253677A
Other languages
Japanese (ja)
Other versions
JPS5855319B2 (en
Inventor
Yoshio 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 JP15253677A priority Critical patent/JPS5855319B2/en
Publication of JPS5484801A publication Critical patent/JPS5484801A/en
Publication of JPS5855319B2 publication Critical patent/JPS5855319B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
JP15253677A 1977-12-19 1977-12-19 Hydraulic rock drill control device Expired JPS5855319B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15253677A JPS5855319B2 (en) 1977-12-19 1977-12-19 Hydraulic rock drill control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15253677A JPS5855319B2 (en) 1977-12-19 1977-12-19 Hydraulic rock drill control device

Publications (2)

Publication Number Publication Date
JPS5484801A true JPS5484801A (en) 1979-07-06
JPS5855319B2 JPS5855319B2 (en) 1983-12-09

Family

ID=15542579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15253677A Expired JPS5855319B2 (en) 1977-12-19 1977-12-19 Hydraulic rock drill control device

Country Status (1)

Country Link
JP (1) JPS5855319B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057021U (en) * 1983-09-26 1985-04-20 三菱電機株式会社 Key button backlighting structure
US4961958A (en) * 1989-06-30 1990-10-09 The Regents Of The Univ. Of Calif. Process for making diamond, and doped diamond films at low temperature
FR3017485B1 (en) * 2014-02-13 2019-04-19 Soletanche Freyssinet METHOD AND INSTALLATION FOR CUTTING A REINFORCED CONCRETE MASSIVE

Also Published As

Publication number Publication date
JPS5855319B2 (en) 1983-12-09

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