US20030079526A1 - Method and apparatus for detecting holes in plastic containers - Google Patents
Method and apparatus for detecting holes in plastic containers Download PDFInfo
- Publication number
- US20030079526A1 US20030079526A1 US10/004,362 US436201A US2003079526A1 US 20030079526 A1 US20030079526 A1 US 20030079526A1 US 436201 A US436201 A US 436201A US 2003079526 A1 US2003079526 A1 US 2003079526A1
- Authority
- US
- United States
- Prior art keywords
- container
- hole
- pressure fluid
- sound
- production
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/227—Details, e.g. general constructional or apparatus details related to high pressure, tension or stress conditions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/014—Resonance or resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/015—Attenuation, scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0235—Plastics; polymers; soft materials, e.g. rubber
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/101—Number of transducers one transducer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2695—Bottles, containers
Definitions
- the invention relates to a method and apparatus for monitoring the production of plastic blow molded containers. More particularly, the invention contemplates the sensing of defects caused by the formation of holes in the walls of plastic blow molded containers by monitoring the sound adjacent predetermined location along the production line of plastic blow molded containers.
- the leak testing of tanks, pressure vessels, and containers is an important manufacturing consideration in many different industries.
- the gas-tight or liquid tight integrity of these components is usually determined by some form of a pressure-decay test.
- the unit under test is injected with air to some specified overpressure, and the pressure is monitored for a specified period of time. If the pressure does not decay below a specified value at the end of the designated time period, the component under test is considered to be leak-free.
- Another technique involves drawing a vacuum on the component being tested and then completely surrounding it with helium gas.
- a detector inside the vacuum system notifies the operator if helium is present in the air being pumped from the component.
- Still another method involves the pressurization/immersion technique which consists of pressurizing the component, totally immersing the component in water or some other clear liquid, and observing the point of bubble emergence.
- Yet another method utilizes a collimated beam of light which is scanned across the component under test.
- the test component has been pressurized with a tracer gas that strongly absorbs the light.
- the light energy absorbed by the gas produces an acoustic emission which is detected by a microphone.
- the resulting signal may be processed either as an alarm or it may be processed in coordination with the beam scanning mechanism to indicate exactly where the leak is located.
- Another method involves apparatus adopted to detect the sound issued outwardly by the individual blow-molding dies during the blow-molding process wherein the sound is converted to an electrical signal and is compared with a reference signal or level and the faulty burst container is rejected.
- Another object of the invention is to produce a method and apparatus that will detect the presence of a hole in a container being formed by a blow molding process.
- Another object of the invention is to produce a method and apparatus for detecting a hole in the wall of a plastic container and producing a signal in response thereto.
- FIG. 1 is an enlarged view of the sensing tube placed in proximity to the plastic containers being formed to convey an acoustical signal created by the flow of pressure fluid through a hole in the container being formed during a blow molding operation;
- FIG. 2 is a block diagram of a system for sensing a hole in a plastic blow molded container during the production thereof.
- the typical blow molding machines include an annular rotatably mounted platform capable of serially receiving hollow plastic preforms or parisons.
- the preforms are carried in molds having an inner cavity in the desired configuration or shape of the finished container to be formed.
- the preforms are heated to a predetermined temperature, which prepares the plastic material to be readily blow molded.
- high pressure fluid such as compressed air, is sequentially introduced into the hollow interior of the preforms.
- the preforms are thereby caused to expand and assume the shape of the associated mold.
- the containers are caused to be inspected for defects. In the event a defective container is detected, means are provided for rejecting the container prior to filling or storage.
- the completed plastic containers are then transferred, from the annular rotating platform to a conveyor which transports the containers to a filling station. Finally, the filled containers are suitably removed from the conveyor to be stored for later delivery or are immediately loaded on appropriate vehicles for delivery to the ultimate customer. Obviously, unfilled containers may also be off-loaded in a similar fashion.
- the drawings disclose an apparatus generally indicated by reference numeral 10 positioned in proximity of the annular rotating platform 12 of a blow-molding machine of the type manufactured by Sidel, a corporation of France.
- the rotating platform 12 contains an annular array of mold cavities 14 into which heated plastic preforms 16 are indexed to a source 18 of pressure fluid which in most instances is compressed air.
- the pressure fluid is introduced into the hollow interior of the heated preform 16 causing the preform to expand and assume the shape of the interior of the mold cavity 14 as a completed container 20 .
- a hole 22 is caused to be formed in the wall of the container 20 , the pressure fluid from the source 18 escaping through the hole 22 will create an acoustic signal.
- a sound detector 24 is positioned adjacent the periphery of the rotating platform 12 .
- the input of the sound detector 24 is coupled to a sound columnator 26 .
- the sound columnator 26 is formed of a hollow plastic tube having the distal end thereof pointed in the direction of the container 20 .
- the sound detector 24 suitable for the purposes of the invention is commercially available and identified as Radio Shack Sound Level Meter Model 33-2050 having an output of from 0 to 1 volt D.C.
- the output of the sound detector 24 is coupled to the input of an amplifier and discriminator 30 which may be set to produce an output signal based upon the amplitude of the voltage signal produced by the sound level meter 26 which may be fed to a logic circuit 40 consisting of timing and/or counting and control logic.
- the logic circuit 40 may be coupled to an air blow-off station 50 which is disposed downstream of the acoustic sensor and is effective to remove any defective container sensed by the logic circuit 40 .
- the air blow-off station 50 includes solenoid operated valves controlling the flow of pressure fluid, such as compressed air for example, to forcefully eject a defective container.
- the sound columnator 26 tends to both focus the transmission of sound energy caused by the pressure fluid flowing through the hole 22 in the container 20 , but also tends to intensify the sound energy as it passes from the hole 22 to the sound detector 24 .
- the apparatus illustrated in FIG. 1 is placed adjacent the blow molding machine so that the open end of columnator 26 of the sound detector 24 faces the cavity 14 wherein the pressure fluid is injected into the heated preform 16 to cause the preform to expand to form a completed container 20 .
- the escaping pressure fluid flowing there through would create an acoustic signal which would be sensed by the columnator 26 and thence the sound detector 24 .
- the sound detector 24 would produce an electric signal in response to the acoustic signal and the electric signal would be sent to the amplifier and discriminator circuit 30 .
- the signal received from the sound detector 24 is amplified and the amplified signal is sent to the logic circuit 40 .
- the logic circuit 40 is operative to coordinate and keep tract of the subsequent path of the container facing a hole in the wall thereof and will send an appropriately timed signal to the air blow-off station 50 .
- the station 50 contains solenoid-operated valves controlling the flow of pressurized air capable of completing the rejection operation. The pressurized air will then be appropriate to remove the container housing the hole from the production line.
Abstract
Description
- 1. Field of the Invention
- The invention relates to a method and apparatus for monitoring the production of plastic blow molded containers. More particularly, the invention contemplates the sensing of defects caused by the formation of holes in the walls of plastic blow molded containers by monitoring the sound adjacent predetermined location along the production line of plastic blow molded containers.
- 2. Description of the Prior Art
- The leak testing of tanks, pressure vessels, and containers is an important manufacturing consideration in many different industries. In some instances, the gas-tight or liquid tight integrity of these components is usually determined by some form of a pressure-decay test. With this technique, the unit under test is injected with air to some specified overpressure, and the pressure is monitored for a specified period of time. If the pressure does not decay below a specified value at the end of the designated time period, the component under test is considered to be leak-free.
- Another technique involves drawing a vacuum on the component being tested and then completely surrounding it with helium gas. A detector inside the vacuum system notifies the operator if helium is present in the air being pumped from the component.
- Still another method involves the pressurization/immersion technique which consists of pressurizing the component, totally immersing the component in water or some other clear liquid, and observing the point of bubble emergence.
- Yet another method utilizes a collimated beam of light which is scanned across the component under test. The test component has been pressurized with a tracer gas that strongly absorbs the light. When the light passes through the gas emerging from the source of the leak, the light energy absorbed by the gas produces an acoustic emission which is detected by a microphone. The resulting signal may be processed either as an alarm or it may be processed in coordination with the beam scanning mechanism to indicate exactly where the leak is located.
- Another method involves apparatus adopted to detect the sound issued outwardly by the individual blow-molding dies during the blow-molding process wherein the sound is converted to an electrical signal and is compared with a reference signal or level and the faulty burst container is rejected.
- Amongst the objectives of the present invention is to produce a method and apparatus for monitoring the production of blow molded plastic containers to detect the presence of a hole in the container during production of the containers.
- Another object of the invention is to produce a method and apparatus that will detect the presence of a hole in a container being formed by a blow molding process.
- Another object of the invention is to produce a method and apparatus for detecting a hole in the wall of a plastic container and producing a signal in response thereto.
- The above as well as other objects of the invention may typically be achieved by a method and apparatus for monitoring the production of blow molded plastic containers comprising the steps of introducing pressure fluid to the interior of a plastic container being formed by a blow molding process;
- acoustically sensing the sound of pressure fluid travelling through a hole in the plastic container being formed;
- producing a control signal in response to the sound produced by the pressure fluid travelling through the hole in the plastic container; and
- sensing the amplitude of the control signal to operatively identify the container with the hole.
- Other objects and advantages of the invention will become readily apparent to those skilled in the art from reading the following detailed description of a preferred embodiment of the invention when considered in the light of the accompanying drawings in which:
- FIG. 1 is an enlarged view of the sensing tube placed in proximity to the plastic containers being formed to convey an acoustical signal created by the flow of pressure fluid through a hole in the container being formed during a blow molding operation; and
- FIG. 2 is a block diagram of a system for sensing a hole in a plastic blow molded container during the production thereof.
- Referring to the drawings, there is illustrated a system incorporating the features of the invention, and more particularly disclosing a station along the production line of a typical blow molding machine.
- The typical blow molding machines include an annular rotatably mounted platform capable of serially receiving hollow plastic preforms or parisons. The preforms are carried in molds having an inner cavity in the desired configuration or shape of the finished container to be formed. The preforms are heated to a predetermined temperature, which prepares the plastic material to be readily blow molded. Upon reaching the desired temperature, high pressure fluid, such as compressed air, is sequentially introduced into the hollow interior of the preforms. The preforms are thereby caused to expand and assume the shape of the associated mold. The containers are caused to be inspected for defects. In the event a defective container is detected, means are provided for rejecting the container prior to filling or storage.
- The completed plastic containers are then transferred, from the annular rotating platform to a conveyor which transports the containers to a filling station. Finally, the filled containers are suitably removed from the conveyor to be stored for later delivery or are immediately loaded on appropriate vehicles for delivery to the ultimate customer. Obviously, unfilled containers may also be off-loaded in a similar fashion.
- There are certain instances in which, due to a myriad of reasons, the completed containers have undetected faults such as, for example, minute holes or apertures in the walls of the containers. When these faulty containers are subsequently filled with a fluid such as a carbonated beverage, disastrous results occur. Accordingly, it has become extremely important to develop a method and apparatus for the detection of these difficult to detect faults in plastic containers.
- The drawings disclose an apparatus generally indicated by
reference numeral 10 positioned in proximity of theannular rotating platform 12 of a blow-molding machine of the type manufactured by Sidel, a corporation of France. Therotating platform 12 contains an annular array ofmold cavities 14 into which heatedplastic preforms 16 are indexed to a source 18 of pressure fluid which in most instances is compressed air. The pressure fluid is introduced into the hollow interior of theheated preform 16 causing the preform to expand and assume the shape of the interior of themold cavity 14 as a completedcontainer 20. In the event ahole 22 is caused to be formed in the wall of thecontainer 20, the pressure fluid from the source 18 escaping through thehole 22 will create an acoustic signal. - A
sound detector 24 is positioned adjacent the periphery of therotating platform 12. The input of thesound detector 24 is coupled to asound columnator 26. Thesound columnator 26 is formed of a hollow plastic tube having the distal end thereof pointed in the direction of thecontainer 20. Thesound detector 24 suitable for the purposes of the invention is commercially available and identified as Radio Shack Sound Level Meter Model 33-2050 having an output of from 0 to 1 volt D.C. - As illustrated in FIG. 2, the output of the
sound detector 24 is coupled to the input of an amplifier anddiscriminator 30 which may be set to produce an output signal based upon the amplitude of the voltage signal produced by thesound level meter 26 which may be fed to alogic circuit 40 consisting of timing and/or counting and control logic. - The
logic circuit 40 may be coupled to an air blow-offstation 50 which is disposed downstream of the acoustic sensor and is effective to remove any defective container sensed by thelogic circuit 40. Typically, the air blow-offstation 50 includes solenoid operated valves controlling the flow of pressure fluid, such as compressed air for example, to forcefully eject a defective container. - It has been surprisingly discovered that the
sound columnator 26 tends to both focus the transmission of sound energy caused by the pressure fluid flowing through thehole 22 in thecontainer 20, but also tends to intensify the sound energy as it passes from thehole 22 to thesound detector 24. - Further, it has been found that satisfactory results are achieved by utilizing a plastic tube twelve inches in length and forming of a rigid polyvinyl chloride (PVC) having a nominal I.D. of 1.0 inch, and an O.D. of 1.3 inches.
- In operation, the apparatus illustrated in FIG. 1 is placed adjacent the blow molding machine so that the open end of
columnator 26 of thesound detector 24 faces thecavity 14 wherein the pressure fluid is injected into theheated preform 16 to cause the preform to expand to form a completedcontainer 20. - Should the
container 20 contain a fault such as ahole 22, or a defect in thefinish 23 of thecontainer 20, the escaping pressure fluid flowing there through would create an acoustic signal which would be sensed by thecolumnator 26 and thence thesound detector 24. Thesound detector 24 would produce an electric signal in response to the acoustic signal and the electric signal would be sent to the amplifier anddiscriminator circuit 30. - The signal received from the
sound detector 24 is amplified and the amplified signal is sent to thelogic circuit 40. Thelogic circuit 40 is operative to coordinate and keep tract of the subsequent path of the container facing a hole in the wall thereof and will send an appropriately timed signal to the air blow-offstation 50. Thestation 50 contains solenoid-operated valves controlling the flow of pressurized air capable of completing the rejection operation. The pressurized air will then be appropriate to remove the container housing the hole from the production line. - In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be understood that the invention can be practiced otherwise than as specifically illustrated and described without departing from it's spirit or scope.
Claims (10)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/004,362 US6553809B1 (en) | 2001-11-01 | 2001-11-01 | Method and apparatus for detecting holes in plastic containers |
MXPA04004097A MXPA04004097A (en) | 2001-11-01 | 2002-10-31 | Method and appparatus for detecting holes in plastic containers. |
EP02782254A EP1451549A4 (en) | 2001-11-01 | 2002-10-31 | Method and appparatus for detecting holes in plastic containers |
NZ532669A NZ532669A (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
AU2002348331A AU2002348331B2 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
CA002466089A CA2466089C (en) | 2001-11-01 | 2002-10-31 | Method and appparatus for detecting holes in plastic containers |
PCT/US2002/034933 WO2003038392A1 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
US10/493,730 US7040167B2 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
BR0213764-0A BR0213764A (en) | 2001-11-01 | 2002-10-31 | Method for monitoring the production of blow molded plastic container to detect a defect in any of the containers, and apparatus for monitoring the production of blow molded plastic container formed by introducing a pressure fluid into an interior of a preform in a mold cavity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/004,362 US6553809B1 (en) | 2001-11-01 | 2001-11-01 | Method and apparatus for detecting holes in plastic containers |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/493,730 Continuation US7040167B2 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
Publications (2)
Publication Number | Publication Date |
---|---|
US6553809B1 US6553809B1 (en) | 2003-04-29 |
US20030079526A1 true US20030079526A1 (en) | 2003-05-01 |
Family
ID=21710411
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/004,362 Expired - Fee Related US6553809B1 (en) | 2001-11-01 | 2001-11-01 | Method and apparatus for detecting holes in plastic containers |
US10/493,730 Expired - Fee Related US7040167B2 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/493,730 Expired - Fee Related US7040167B2 (en) | 2001-11-01 | 2002-10-31 | Method and apparatus for detecting holes in plastic containers |
Country Status (8)
Country | Link |
---|---|
US (2) | US6553809B1 (en) |
EP (1) | EP1451549A4 (en) |
AU (1) | AU2002348331B2 (en) |
BR (1) | BR0213764A (en) |
CA (1) | CA2466089C (en) |
MX (1) | MXPA04004097A (en) |
NZ (1) | NZ532669A (en) |
WO (1) | WO2003038392A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7605082B1 (en) | 2005-10-13 | 2009-10-20 | Novellus Systems, Inc. | Capping before barrier-removal IC fabrication method |
CN102141481A (en) * | 2010-02-01 | 2011-08-03 | 芜湖亚奇汽车部件有限公司 | Movable device for testing state of blowing mold |
US9074286B2 (en) | 2003-10-20 | 2015-07-07 | Novellus Systems, Inc. | Wet etching methods for copper removal and planarization in semiconductor processing |
US9074287B2 (en) | 2009-09-02 | 2015-07-07 | Novellus Systems, Inc. | Reduced isotropic etchant material consumption and waste generation |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPN20000015A1 (en) * | 2000-03-01 | 2001-09-03 | Sipa Spa | SYSTEM WITH AUTOMATIC DETECTION DETECTION DEVICE FOR BLOWED CONTAINERS |
ITPN20020089A1 (en) * | 2002-11-15 | 2004-05-16 | Sipa Spa | PLANT AND PROCEDURE WITH SPECIFIC DEVICE FOR |
US7481637B2 (en) * | 2004-05-12 | 2009-01-27 | Woodbridge Foam Corporation | Vented mold and method for producing molded article |
US7299681B2 (en) * | 2004-09-27 | 2007-11-27 | Idc, Llc | Method and system for detecting leak in electronic devices |
US7559232B2 (en) * | 2006-09-01 | 2009-07-14 | Air Logic Power Systems, LLC | Vacuum turntable system for leak testing melt blown bottles |
DE102008013419A1 (en) * | 2008-03-06 | 2009-09-10 | Khs Corpoplast Gmbh & Co. Kg | Method and apparatus for blow molding containers |
CA2718103A1 (en) * | 2008-03-17 | 2009-09-24 | Plastic Technologies Inc. | Method and apparatus for improved detection of holes in plastic containers |
DE102008051564A1 (en) * | 2008-10-09 | 2010-04-15 | Khs Corpoplast Gmbh & Co. Kg | Bottle-shaped container inspecting method, involves subjecting container with excitation signal, and detecting defective container during detection of minimum deviation between response signal and reference signal |
JP6032142B2 (en) * | 2013-07-11 | 2016-11-24 | 株式会社デンソー | Defect inspection method for honeycomb structure |
IT201600079175A1 (en) * | 2016-07-28 | 2018-01-28 | Fillshape Srl | Envelope verification device and procedure for filling lines. |
CN109049642A (en) * | 2018-10-11 | 2018-12-21 | 张家港市联鑫塑料机械有限公司 | Note blows blow moulding machine and leaks hunting Jian Ti mechanism |
US11626003B2 (en) * | 2021-02-23 | 2023-04-11 | Rheem Manufacturing Company | Systems and methods for monitoring and detecting a fault in a fluid storage tank |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120193A (en) * | 1977-05-12 | 1978-10-17 | Uniroyal, Inc. | Leak-detecting apparatus |
US4221124A (en) * | 1978-07-27 | 1980-09-09 | Nrm Corporation | Bladder leak and rupture detector |
US4491013A (en) * | 1983-04-15 | 1985-01-01 | Bubik Leslie M | Apparatus and method for high pressure testing and inspection of tires |
US5448907A (en) * | 1993-12-09 | 1995-09-12 | Long Island Lighting Company | Apparatus and method for detecting fluid flow |
US6330821B1 (en) * | 2000-02-14 | 2001-12-18 | The Goodyear Tire & Rubber Company | Method of detecting expansion vessel leakage |
US6401524B1 (en) * | 2000-12-08 | 2002-06-11 | The Goodyear Tire & Rubber Company | Method of detecting steam expansion vessel leakage |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3290922A (en) * | 1964-01-22 | 1966-12-13 | Techrand Corp Of America | Pressure and vacuum determinator |
US3298518A (en) * | 1965-03-29 | 1967-01-17 | Johnson & Son Inc S C | Method and apparatus for testing aerosol spray devices |
US3399563A (en) * | 1966-12-16 | 1968-09-03 | Idex Corp | Method and apparatus for testing the pressure tightness of containers |
US3841468A (en) * | 1970-11-27 | 1974-10-15 | Owens Illinois Inc | Molded plastic container secondary operations machine |
US3805226A (en) * | 1971-02-16 | 1974-04-16 | Us Army | Omnidirectional high sensitivity hydrophone |
US3792606A (en) * | 1972-04-17 | 1974-02-19 | American Can Co | Method and apparatus for enhancing detection of small leaks in articles |
US3795137A (en) * | 1972-09-12 | 1974-03-05 | Johnson & Son Inc S C | Leak detection apparatus for aerosol containers |
US4096736A (en) * | 1977-02-25 | 1978-06-27 | American Can Company | Ultrasonic leak hole detection apparatus and method |
US4116043A (en) * | 1977-07-11 | 1978-09-26 | American Can Company | Electronic detection apparatus for leaks |
US4485668A (en) | 1982-09-30 | 1984-12-04 | Leak Detective, Inc. | Leak detector for pressurized pipes |
US4677679A (en) * | 1984-07-05 | 1987-06-30 | Killion Mead C | Insert earphones for audiometry |
US4577487A (en) * | 1984-12-14 | 1986-03-25 | Dooley John G | Pressure vessel testing |
US4809538A (en) * | 1987-08-07 | 1989-03-07 | Oakland Engineering Inc. | Ultrasonic leak detector |
US5161408A (en) | 1991-08-26 | 1992-11-10 | Mcrae Thomas G | Photo-acoustic leak detection system and method |
US5361636A (en) * | 1992-09-23 | 1994-11-08 | Columbia Gas Of Ohio, Inc. | Apparatus and process for measuring the magnitude of leaks |
US5675506A (en) | 1992-10-09 | 1997-10-07 | Rensselaer Polytechnic Institute | Detection of leaks in vessels |
GB2276515B (en) | 1993-03-25 | 1996-11-13 | Fuji Tecom Inc | Leakage-sound detecting apparatus |
DE19600443A1 (en) | 1995-01-14 | 1996-07-18 | Gerhart Schroff | Leakage testing system for container or housing |
US5767393A (en) * | 1997-03-10 | 1998-06-16 | Mcdermott Technology, Inc. | Apparatus and method for detecting leaks in tanks |
US6234021B1 (en) * | 1999-02-02 | 2001-05-22 | Csi Technology, Inc. | Enhanced detection of vibration |
US6416308B1 (en) * | 2000-02-07 | 2002-07-09 | Crown Cork & Seal Technologies Corporation | System for identifying and rejecting defective blow-molded plastic products |
-
2001
- 2001-11-01 US US10/004,362 patent/US6553809B1/en not_active Expired - Fee Related
-
2002
- 2002-10-31 BR BR0213764-0A patent/BR0213764A/en not_active IP Right Cessation
- 2002-10-31 US US10/493,730 patent/US7040167B2/en not_active Expired - Fee Related
- 2002-10-31 EP EP02782254A patent/EP1451549A4/en not_active Withdrawn
- 2002-10-31 CA CA002466089A patent/CA2466089C/en not_active Expired - Fee Related
- 2002-10-31 WO PCT/US2002/034933 patent/WO2003038392A1/en active IP Right Grant
- 2002-10-31 AU AU2002348331A patent/AU2002348331B2/en not_active Ceased
- 2002-10-31 NZ NZ532669A patent/NZ532669A/en unknown
- 2002-10-31 MX MXPA04004097A patent/MXPA04004097A/en active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4120193A (en) * | 1977-05-12 | 1978-10-17 | Uniroyal, Inc. | Leak-detecting apparatus |
US4221124A (en) * | 1978-07-27 | 1980-09-09 | Nrm Corporation | Bladder leak and rupture detector |
US4491013A (en) * | 1983-04-15 | 1985-01-01 | Bubik Leslie M | Apparatus and method for high pressure testing and inspection of tires |
US5448907A (en) * | 1993-12-09 | 1995-09-12 | Long Island Lighting Company | Apparatus and method for detecting fluid flow |
US6330821B1 (en) * | 2000-02-14 | 2001-12-18 | The Goodyear Tire & Rubber Company | Method of detecting expansion vessel leakage |
US6401524B1 (en) * | 2000-12-08 | 2002-06-11 | The Goodyear Tire & Rubber Company | Method of detecting steam expansion vessel leakage |
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US9074286B2 (en) | 2003-10-20 | 2015-07-07 | Novellus Systems, Inc. | Wet etching methods for copper removal and planarization in semiconductor processing |
US9447505B2 (en) | 2005-10-05 | 2016-09-20 | Novellus Systems, Inc. | Wet etching methods for copper removal and planarization in semiconductor processing |
US7605082B1 (en) | 2005-10-13 | 2009-10-20 | Novellus Systems, Inc. | Capping before barrier-removal IC fabrication method |
US9074287B2 (en) | 2009-09-02 | 2015-07-07 | Novellus Systems, Inc. | Reduced isotropic etchant material consumption and waste generation |
CN102141481A (en) * | 2010-02-01 | 2011-08-03 | 芜湖亚奇汽车部件有限公司 | Movable device for testing state of blowing mold |
Also Published As
Publication number | Publication date |
---|---|
US7040167B2 (en) | 2006-05-09 |
CA2466089A1 (en) | 2003-05-08 |
BR0213764A (en) | 2004-11-09 |
MXPA04004097A (en) | 2005-01-25 |
EP1451549A4 (en) | 2010-08-18 |
CA2466089C (en) | 2009-02-17 |
WO2003038392A8 (en) | 2004-10-07 |
EP1451549A1 (en) | 2004-09-01 |
US20050181087A1 (en) | 2005-08-18 |
NZ532669A (en) | 2005-10-28 |
WO2003038392A1 (en) | 2003-05-08 |
AU2002348331B2 (en) | 2006-10-05 |
US6553809B1 (en) | 2003-04-29 |
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