JPS52123065A - Jack for center pushing device - Google Patents

Jack for center pushing device

Info

Publication number
JPS52123065A
JPS52123065A JP3829676A JP3829676A JPS52123065A JP S52123065 A JPS52123065 A JP S52123065A JP 3829676 A JP3829676 A JP 3829676A JP 3829676 A JP3829676 A JP 3829676A JP S52123065 A JPS52123065 A JP S52123065A
Authority
JP
Japan
Prior art keywords
jack
pushing device
center pushing
center
pushing
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
JP3829676A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5530113B2 (en, 2012
Inventor
Isao Hokura
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.)
EISHIN DOBOKU KK
Original Assignee
EISHIN DOBOKU KK
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 EISHIN DOBOKU KK filed Critical EISHIN DOBOKU KK
Priority to JP3829676A priority Critical patent/JPS52123065A/ja
Publication of JPS52123065A publication Critical patent/JPS52123065A/ja
Publication of JPS5530113B2 publication Critical patent/JPS5530113B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP3829676A 1976-04-07 1976-04-07 Jack for center pushing device Granted JPS52123065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3829676A JPS52123065A (en) 1976-04-07 1976-04-07 Jack for center pushing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3829676A JPS52123065A (en) 1976-04-07 1976-04-07 Jack for center pushing device

Publications (2)

Publication Number Publication Date
JPS52123065A true JPS52123065A (en) 1977-10-15
JPS5530113B2 JPS5530113B2 (en, 2012) 1980-08-08

Family

ID=12521336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3829676A Granted JPS52123065A (en) 1976-04-07 1976-04-07 Jack for center pushing device

Country Status (1)

Country Link
JP (1) JPS52123065A (en, 2012)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902007A (en) * 1957-05-31 1959-09-01 Allis Chalmers Mfg Co Cylinder piston assembly with pressure relieving means

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902007A (en) * 1957-05-31 1959-09-01 Allis Chalmers Mfg Co Cylinder piston assembly with pressure relieving means

Also Published As

Publication number Publication date
JPS5530113B2 (en, 2012) 1980-08-08

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