JPS5792222A - Inner tube for jack and manufacture thereof - Google Patents

Inner tube for jack and manufacture thereof

Info

Publication number
JPS5792222A
JPS5792222A JP16634580A JP16634580A JPS5792222A JP S5792222 A JPS5792222 A JP S5792222A JP 16634580 A JP16634580 A JP 16634580A JP 16634580 A JP16634580 A JP 16634580A JP S5792222 A JPS5792222 A JP S5792222A
Authority
JP
Japan
Prior art keywords
jack
inner tube
tube
screws
sheathing structure
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
JP16634580A
Other languages
Japanese (ja)
Other versions
JPS629695B2 (en
Inventor
Kiyoshi Matsui
Yoshio Enmei
Tamiji Iimura
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.)
NITSUTETSU KENZAI KK
SUGATA KOGYO KK
Nippon Steel Metal Products Co Ltd
Original Assignee
NITSUTETSU KENZAI KK
SUGATA KOGYO KK
Nippon Steel Metal Products 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 NITSUTETSU KENZAI KK, SUGATA KOGYO KK, Nippon Steel Metal Products Co Ltd filed Critical NITSUTETSU KENZAI KK
Priority to JP16634580A priority Critical patent/JPS5792222A/en
Publication of JPS5792222A publication Critical patent/JPS5792222A/en
Publication of JPS629695B2 publication Critical patent/JPS629695B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)

Abstract

PURPOSE: To simplify the repairing and cleaning of a jack as well as reduce the weight of the jack by providing a mud water cut-off wall to the inside of the inner tube for the support jack for the struts of a sheathing structure.
CONSTITUTION: A support jack by which the struts of a sheathing structure are supported is made up of an outer tube 7 having screws on the insides of its both ends, a short tube whose other end has a pin hole 12 to be connected with the strut 10, and an inner tube 14 with screws to be fitted with the screws of the outer tube 7. A rubber ring 22 is provided at the joint between the outer tube 7 and the inner tube 14, and the inside disk 18 of the inner tube 14 is fixed to the inside of the inner tube 14 for the jack by means of fins produced by the frictional pressing contact of the short tube 19. Thus, in case where the inside of the sheathing structure is embedded with soil, the intrusion of mud water into the joint of the jack can be prevented.
COPYRIGHT: (C)1982,JPO&Japio
JP16634580A 1980-11-26 1980-11-26 Inner tube for jack and manufacture thereof Granted JPS5792222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16634580A JPS5792222A (en) 1980-11-26 1980-11-26 Inner tube for jack and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16634580A JPS5792222A (en) 1980-11-26 1980-11-26 Inner tube for jack and manufacture thereof

Publications (2)

Publication Number Publication Date
JPS5792222A true JPS5792222A (en) 1982-06-08
JPS629695B2 JPS629695B2 (en) 1987-03-02

Family

ID=15829648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16634580A Granted JPS5792222A (en) 1980-11-26 1980-11-26 Inner tube for jack and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS5792222A (en)

Also Published As

Publication number Publication date
JPS629695B2 (en) 1987-03-02

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