JPS5792222A - Inner tube for jack and manufacture thereof - Google Patents
Inner tube for jack and manufacture thereofInfo
- 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
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
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) |
-
1980
- 1980-11-26 JP JP16634580A patent/JPS5792222A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS629695B2 (en) | 1987-03-02 |
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