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
English (en)
Japanese (ja)
Other versions
JPS6226389B2 (enrdf_load_stackoverflow
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/ja
Publication of JPS57119087A publication Critical patent/JPS57119087A/ja
Publication of JPS6226389B2 publication Critical patent/JPS6226389B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
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 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

Cited By (1)

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

Cited By (1)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
DE3268064D1 (en) Positive fluid displacement apparatus of the scroll-type, and a method of making sealing means for such an apparatus
EP0142236A3 (en) Emergency shaft seal device by deformation of packing ring
AU561401B2 (en) Underwater pipe sealing apparatus
GB2064418B (en) Method of making packing seals
JPS5482553A (en) Shaft seal for water pump and method of sealing same
EP0131286A3 (en) Mechanical seal for sealing slurry liquid
GB2128692B (en) Seal for an underwater connector
GB2104317B (en) Acoustic sealing of jack plug for deaf-aid
JPS57186669A (en) Shaft sealing device sealed by fluid
JPS57119087A (en) Internal/external differential pressure adjustment of underwater shaft sealing apparatus for vertical excavator
GB2104135B (en) Plug for temporarily sealing annular member
GB2123151B (en) Fluid leak-proof housings for displacement transducers
JPS57103991A (en) Sealing device for inner part of pipe
JPS57204829A (en) Sealing device for valve of valve bag
JPS57194972A (en) Method of packing film
AU8160882A (en) Pipe sealing apparatus
DE3272306D1 (en) Device for forming a dam for the protection of waters against oil leakages
JPS57119088A (en) Underwater shaft sealing apparatus
JPS56156592A (en) Airtight sealing treatment jig of vertical pipe
JPS57179471A (en) Shaft sealing system for stern tube seal shaft sealing device
JPS57159406A (en) Oil pressure apparatus of combine
JPS5767785A (en) Sealing plate for floatable vertical pipe of furnace
JPS57110802A (en) Apparatus for adjusting differential pressure of hydraulic motor
JPS57174676A (en) Shielding of housing box block for differential pressure cooler
JPS57151220A (en) Method of producing cable gas dam