JPS56160458A - Pressure control unit for a hydraulic closed device - Google Patents

Pressure control unit for a hydraulic closed device

Info

Publication number
JPS56160458A
JPS56160458A JP6393680A JP6393680A JPS56160458A JP S56160458 A JPS56160458 A JP S56160458A JP 6393680 A JP6393680 A JP 6393680A JP 6393680 A JP6393680 A JP 6393680A JP S56160458 A JPS56160458 A JP S56160458A
Authority
JP
Japan
Prior art keywords
pressure
hydraulic
relay
piston
pressure detection
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
JP6393680A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6319747B2 (enExample
Inventor
Kazuo Honma
Yoshio Nakajima
Eiki Izumi
Hiroshi Watanabe
Yukio Aoyanagi
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP6393680A priority Critical patent/JPS56160458A/ja
Publication of JPS56160458A publication Critical patent/JPS56160458A/ja
Publication of JPS6319747B2 publication Critical patent/JPS6319747B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Fluid Gearings (AREA)
JP6393680A 1980-05-16 1980-05-16 Pressure control unit for a hydraulic closed device Granted JPS56160458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6393680A JPS56160458A (en) 1980-05-16 1980-05-16 Pressure control unit for a hydraulic closed device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6393680A JPS56160458A (en) 1980-05-16 1980-05-16 Pressure control unit for a hydraulic closed device

Publications (2)

Publication Number Publication Date
JPS56160458A true JPS56160458A (en) 1981-12-10
JPS6319747B2 JPS6319747B2 (enExample) 1988-04-25

Family

ID=13243725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6393680A Granted JPS56160458A (en) 1980-05-16 1980-05-16 Pressure control unit for a hydraulic closed device

Country Status (1)

Country Link
JP (1) JPS56160458A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150699U (ja) * 1983-03-30 1984-10-08 株式会社新潟鐵工所 Ｚ型推進装置における旋回装置
US5170625A (en) * 1989-07-27 1992-12-15 Hitachi Construction Machinery Co., Ltd. Control system for hydraulic pump
US6269635B1 (en) 1999-01-20 2001-08-07 Manitowoc Crane Group, Inc. Control and hydraulic system for a liftcrane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150699U (ja) * 1983-03-30 1984-10-08 株式会社新潟鐵工所 Ｚ型推進装置における旋回装置
US5170625A (en) * 1989-07-27 1992-12-15 Hitachi Construction Machinery Co., Ltd. Control system for hydraulic pump
US6269635B1 (en) 1999-01-20 2001-08-07 Manitowoc Crane Group, Inc. Control and hydraulic system for a liftcrane

Also Published As

Publication number Publication date
JPS6319747B2 (enExample) 1988-04-25

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