JPS55129514A - Rubber dam - Google Patents
Rubber damInfo
- Publication number
- JPS55129514A JPS55129514A JP6429979A JP6429979A JPS55129514A JP S55129514 A JPS55129514 A JP S55129514A JP 6429979 A JP6429979 A JP 6429979A JP 6429979 A JP6429979 A JP 6429979A JP S55129514 A JPS55129514 A JP S55129514A
- Authority
- JP
- Japan
- Prior art keywords
- rubber dam
- pressure
- safety device
- pipe
- conduits
- 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
- Barrages (AREA)
Abstract
PURPOSE: To enable a correct sensing of a pressure in the rubber dam by a method wherein a connector pipe of which one end is connected to a safety device is communicated with the inside of the rubber dam, independently of conduits which are also communicated with the inside of the rubber dam.
CONSTITUTION: Connection pipe 21 of which one end is connected to the safety device 20, as well as the fluid supplying/discharging conduits 9 and 10, is connected into the expansion part 1'a of the rubber dam. The connector pipe 21 is an independent pipe which is not directly connected to the fluid supplying/discharging conduits 9 and 10. In the safety device 20, one end of the connection pipe 21 is connected to a water tank having liquid filled therein. Inner pressure in the rubber dam may be controlled by properly setting a water depth h of the liquid to be filled therein. That is, when the pressure in the rubber dam is increased more than the water pressure in respect to the head h, the inner pressure is released as air bubble in the safety device 20. Therefore, the working pressure in the safety device is set at the same proper inner pressure in the rubber dam, and the pressure in the rubber dam may easily be set at a proper value.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6429979A JPS55129514A (en) | 1979-05-24 | 1979-05-24 | Rubber dam |
US06/126,749 US4330224A (en) | 1979-03-20 | 1980-03-03 | Collapsible rubber dam installation |
NLAANVRAGE8001437,A NL179225C (en) | 1979-03-20 | 1980-03-11 | FOLDABLE RUBBER DAM. |
IT8020754A IT1194624B (en) | 1979-03-20 | 1980-03-18 | INFLATABLE RUBBER DAM IMPLANT |
GB8009283A GB2044828B (en) | 1979-03-20 | 1980-03-19 | Collapsible rubber dam installation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6429979A JPS55129514A (en) | 1979-05-24 | 1979-05-24 | Rubber dam |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3542279A Division JPS55129513A (en) | 1979-03-20 | 1979-03-28 | Rubber dam |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55129514A true JPS55129514A (en) | 1980-10-07 |
JPS5761845B2 JPS5761845B2 (en) | 1982-12-27 |
Family
ID=13254222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6429979A Granted JPS55129514A (en) | 1979-03-20 | 1979-05-24 | Rubber dam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55129514A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57178017A (en) * | 1981-04-27 | 1982-11-02 | Bridgestone Corp | Quick falling device for rubber dam |
-
1979
- 1979-05-24 JP JP6429979A patent/JPS55129514A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57178017A (en) * | 1981-04-27 | 1982-11-02 | Bridgestone Corp | Quick falling device for rubber dam |
Also Published As
Publication number | Publication date |
---|---|
JPS5761845B2 (en) | 1982-12-27 |
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