JPS55129514A - Rubber dam - Google Patents

Rubber dam

Info

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
Application number
JP6429979A
Other languages
Japanese (ja)
Other versions
JPS5761845B2 (en
Inventor
Takeo Muramatsu
Mamoru Kurihara
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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP6429979A priority Critical patent/JPS55129514A/en
Priority to US06/126,749 priority patent/US4330224A/en
Priority to NLAANVRAGE8001437,A priority patent/NL179225C/en
Priority to IT8020754A priority patent/IT1194624B/en
Priority to GB8009283A priority patent/GB2044828B/en
Publication of JPS55129514A publication Critical patent/JPS55129514A/en
Publication of JPS5761845B2 publication Critical patent/JPS5761845B2/ja
Granted legal-status Critical Current

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
JP6429979A 1979-03-20 1979-05-24 Rubber dam Granted JPS55129514A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178017A (en) * 1981-04-27 1982-11-02 Bridgestone Corp Quick falling device for rubber dam

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JPS55129514A (en) Rubber dam
JPS522061A (en) Method of supplying pressurized water
JPS51150705A (en) An automatic pressure constan t fluid supplying equipment
PT77482A (en) DEVICE AND METHOD FOR THE SEALING OF LAND WITH CONCRETE PIEU WITHOUT COATING
GB1392526A (en) Device for making a hole in the ground
JPS5411555A (en) Making of heat pipe
JPS536912A (en) Air supplying and water level regulating apparatus in pressure water tank
JPS5523238A (en) Method and mold for casting concrete at groove communicating lower half portions of two sewage pipes jointly laid in ground with space therebetween
JPS53124347A (en) Water quality controller
JPS54136879A (en) Pressure substitution device
JPS5330002A (en) Pump running method
JPS54156578A (en) Liquid sealing device of liquid seal type diaphragm pressure gauge
JPS5331219A (en) Underground steel pipe coupling
JPS52124214A (en) Preventing system of luid leakage in pipe line
JPS5333464A (en) Floating oil recovering apparatus
JPS5341844A (en) Hot-water supplying heating apparatus
JPS51144802A (en) Water supply heating unit's water level control
JPS51114722A (en) Method of preventing corrosion of a heat supply pipe
JPS5622115A (en) Supply pressure control device
JPS52133490A (en) Method of controlling rate of flow of slurry
JPS5369923A (en) Discharge technique in water collection pipes
JPS5375164A (en) Degassing column for dissolved gas
JPS53470A (en) Dissolving equipment for freezed body
JPS55161106A (en) Rubber weir
JPS53122114A (en) Water absorbing jet pump