JPS57119087A - Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator - Google Patents

Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator

Info

Publication number
JPS57119087A
JPS57119087A JP19446081A JP19446081A JPS57119087A JP S57119087 A JPS57119087 A JP S57119087A JP 19446081 A JP19446081 A JP 19446081A JP 19446081 A JP19446081 A JP 19446081A JP S57119087 A JPS57119087 A JP S57119087A
Authority
JP
Japan
Prior art keywords
internal
differential pressure
pressure adjustment
sealing apparatus
shaft sealing
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
JP19446081A
Other languages
Japanese (ja)
Other versions
JPS6226389B2 (en
Inventor
Hiroshi Kusumi
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 JP19446081A priority Critical patent/JPS57119087A/en
Publication of JPS57119087A publication Critical patent/JPS57119087A/en
Publication of JPS6226389B2 publication Critical patent/JPS6226389B2/ja
Granted legal-status Critical Current

Links

JP19446081A 1981-12-04 1981-12-04 Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator Granted JPS57119087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19446081A JPS57119087A (en) 1981-12-04 1981-12-04 Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19446081A JPS57119087A (en) 1981-12-04 1981-12-04 Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator

Publications (2)

Publication Number Publication Date
JPS57119087A true JPS57119087A (en) 1982-07-24
JPS6226389B2 JPS6226389B2 (en) 1987-06-09

Family

ID=16324927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19446081A Granted JPS57119087A (en) 1981-12-04 1981-12-04 Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator

Country Status (1)

Country Link
JP (1) JPS57119087A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169881A (en) * 2004-12-17 2006-06-29 Hokuto Kogyo:Kk Excavator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006169881A (en) * 2004-12-17 2006-06-29 Hokuto Kogyo:Kk Excavator
JP4633454B2 (en) * 2004-12-17 2011-02-16 株式会社 北斗工業 Drilling rig

Also Published As

Publication number Publication date
JPS6226389B2 (en) 1987-06-09

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