[특허]Device for testing filters, particularly sterile filters

Device for testing filters, particularly sterile filters 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-003/26
출원번호	US-0373309 (1982-04-29)
우선권정보	DE-3117399 (1981-05-02)
발명자 / 주소	Huschke Bruno (Hauptstr. 12 D-8931 Reichertshofen DEX)
인용정보	피인용 횟수 : 17 인용 특허 : 0

초록 ▼

A filter testing device has a filter housing which has an air inlet and outlet and receives the filter. An inlet line is connected to the air inlet. An inlet valve for the inlet line is controlled to produce a continuous and evenly increasing air pressure therein and an electronic pressure sensor monitors the air pressure therein. An electronic evaluating and control circuit has a time switch, an adjustable threshold device and a peak pressure detector, and controls the inlet valve, a vent valve connected to the inlet line, and a recording mechanism. The air pressure in the inlet line is increased until it reaches a preset pressure. The inlet valve is then closed for the time period set on the time switch. Thereafter, air is again supplied to the inlet line until no further pressure increases are detected by the peak pressure sensor.

대표청구항 ▼

In a device for testing a filter, including a filter housing having an air inlet and an air outlet and adapted to receive a filter which is to be tested, an inlet line connected to said air inlet, the air pressure in said inlet line being regulated by an inlet valve, and means for recording the air pressure in said inlet line; the improvement comprising: pressure-regulating means capable of producing a continuous and evenly increasing air pressure in said inlet line, including an electronic pressure sensor which monitors the air pressure in said inlet line, an electronic evaluating and control circuit having a time switch, an adjustable threshold device for effecting pressure adjustment and a peak pressure sensor, said evaluating and control circuit controlling said inlet valve and being responsive to said electronic pressure sensor, said adjustable threshold device and said peak pressure sensor; and including a vent valve which is connected to said inlet line and said recording means and is controlled by said evaluating and control circuit; said pressure regulating means causing the air pressure to increase in said inlet line until it reaches a preselected pressure-resisting test pressure which can be adjusted by means of said adjustable threshold device, said inlet valve then being closed by said pressure regulating means for a time interval set on said time switch, a further increase of the air pressure in said inlet line then being effected by said pressure regulating means until said peak pressure sensor indicates no further air-pressure increase is occurring, thereby indicating a bubble point has been reached, said peak pressure sensor then causing said evaluating and control circuit to open said vent valve and simultaneously close said inlet valve.

이 특허를 인용한 특허 (17)

Hirayama Shigemitsu (Yao JPX) Akashi Takamichi (Ikeda JPX) Ikuta Akio (Osaka JPX) Sasaki Isao (Minoo JPX) Fukuda Hiroshi (Tokyo ; JPX), Apparatus for testing membrane filters, and for sterilizing liquids with use of membrane filter.
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Juhasz, Charles, Apparatus for testing the ability of a filter to filter contaminants.
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Kenley Rodney S. ; Kapadia Seema A. ; Schroeder Christine F. ; Feldsien Thomas M. ; Duch Michael ; Treu Dennis M. ; Peter ; Jr. Frederick H., Blood tubing set integrity tests for extracorporeal circuits.
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Courrieu,Olivier, Evaluating the leaktightness of a device for storing fuel gas under high pressure.
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Kononov Anthony (Church Rd. ; Box 162 Sumneytown PA 18084), Filter analyzing system.
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Kenley Rodney S. (Libertyville IL) Matthews Dawn (Grayslake IL) Wilkerson Douglas L. (Gurnee IL) Treu Dennis M. (Gurnee IL) Peter ; Jr. Frederick H. (Barrington IL) Brose Tom L. (Gurnee IL) Feldsein , Filter integrity test method for dialysis machines.
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Kauke Heinz (Erlensee DEX), Filter test device.
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Tveter Richard S. (Barrington IL) Miller Wayne A. (Elgin IL), Leak tester.
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Ganzi, Gary C., Method and apparatus for evaluating a membrane.
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Randhahn Horst (Darmstadt-Eberstadt DEX) Vogelman Hartmut (Dreieich DEX), Method and apparatus for rapidly testing the integrity of filter elements.
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Wallen Lars,SEX, Method and device for monitoring the condition of a filter in a ventilator.
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Hofmann Frieder (Kriftel DEX), Method and device for testing the permeability of membrane filters.
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Folden Thomas I. ; Polaschegg Hans D.,DEX ; Peter Harald,DEX, Method for testing dialyzer integrity prior to use.
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Willeke Klaus (Cincinnati OH), Non-invasive quantitative method for fit testing respirators and corresponding respirator apparatus.
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Padgett, William Brandon; Kesler, Ralph Steven; Cameron, Michael E.; Horton, Roger D., System and a method for detecting fiber damage in a dialyzer.
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Hopkins Scott D. (Dryden NY) Spencer Daniel W. (Cortland NY) Lipari Charles P. (Port Jefferson NY) Altemose George A. (Stony Brook NY), System and method for testing the integrity of porous elements.
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Von Der Hardt, Jochen; Baumfalk, Reinhard; Reif, Oscar-Werner; Van Den Boogaard, Juergen, Test device for filter systems.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Device for testing filters, particularly sterile filters 원문보기

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Device for testing filters, particularly sterile filters 원문보기

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이 특허를 인용한 특허 (17)

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