JPS56413A - Discharging method and apparatus for multilayer rubber dam - Google Patents

Discharging method and apparatus for multilayer rubber dam

Info

Publication number
JPS56413A
JPS56413A JP7486779A JP7486779A JPS56413A JP S56413 A JPS56413 A JP S56413A JP 7486779 A JP7486779 A JP 7486779A JP 7486779 A JP7486779 A JP 7486779A JP S56413 A JPS56413 A JP S56413A
Authority
JP
Japan
Prior art keywords
air chamber
air
valve
discharged
piping
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.)
Pending
Application number
JP7486779A
Other languages
Japanese (ja)
Inventor
Nobuo Inoue
Takeo Muramatsu
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 JP7486779A priority Critical patent/JPS56413A/en
Publication of JPS56413A publication Critical patent/JPS56413A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To provide a complete fall of the multilayer rubber dam with a simple piping facility by a method wherein a discharge valve is opened to discharge the first air chamber and the second air chamber is automatically discharged after a specified time is passed upon the inner pressure in the first air chamber piping is reached up to a constant pressure.
CONSTITUTION: When the multilayer rubber dam is to be discharged, air supply valve b1 is closed and air discharge valve b2 is opened. At the first, a discharge of the enclosed air in the first air chamber 4'a is started and a pressure in the piping 12 is gradually decreased. Then, the liquid level at the left part of the communication pipe 20 is gradually raised, a float 27 is moved away from the lower limit stopper 26b and then floated up. The second air chamber 6 is projected into the air chamber 4'a with being bulged out to form a communicated clearance therein. As a result, the remaining air in the air chamber 4'a is completely discharged out from the valve b2, so that an abnormal fall of the rubber dam due to hydraulic pressure is completely prevented. When the piping 12 shows a surrounding atmospheric pressure, the float 27 is abutted against the upper limit stopper 26a, auxiliary valve 22b is opened, the air in the air chamber 6 is discharged from the valve b2 and then rapidly discharged via the main valve 22a.
COPYRIGHT: (C)1981,JPO&Japio
JP7486779A 1979-06-14 1979-06-14 Discharging method and apparatus for multilayer rubber dam Pending JPS56413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7486779A JPS56413A (en) 1979-06-14 1979-06-14 Discharging method and apparatus for multilayer rubber dam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7486779A JPS56413A (en) 1979-06-14 1979-06-14 Discharging method and apparatus for multilayer rubber dam

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP11472479A Division JPS56416A (en) 1979-09-08 1979-09-08 Automatic fall device for rubber dam

Publications (1)

Publication Number Publication Date
JPS56413A true JPS56413A (en) 1981-01-06

Family

ID=13559703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7486779A Pending JPS56413A (en) 1979-06-14 1979-06-14 Discharging method and apparatus for multilayer rubber dam

Country Status (1)

Country Link
JP (1) JPS56413A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740012A (en) * 1980-08-25 1982-03-05 Bridgestone Corp Falling device for rubber dam
US4923067A (en) * 1988-11-10 1990-05-08 The Boeing Company Automated drill sorting system and method
US4940128A (en) * 1988-11-10 1990-07-10 The Boeing Company Article orientation system and method
US4972935A (en) * 1986-07-30 1990-11-27 Hoechst Aktiengesellschaft Apparatus for fixing the position of test zones of a test strip and for reversing the latter
US5310037A (en) * 1992-10-15 1994-05-10 Guey Yu C Automatic loading mechanism for electroplating

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740012A (en) * 1980-08-25 1982-03-05 Bridgestone Corp Falling device for rubber dam
US4972935A (en) * 1986-07-30 1990-11-27 Hoechst Aktiengesellschaft Apparatus for fixing the position of test zones of a test strip and for reversing the latter
US4923067A (en) * 1988-11-10 1990-05-08 The Boeing Company Automated drill sorting system and method
US4940128A (en) * 1988-11-10 1990-07-10 The Boeing Company Article orientation system and method
US5310037A (en) * 1992-10-15 1994-05-10 Guey Yu C Automatic loading mechanism for electroplating

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