[특허]Method and equipment for dosing small amounts of liquid quantitatively

[미국특허] Method and equipment for dosing small amounts of liquid quantitatively 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-011/00
출원번호	US-0623738 (1996-03-29)
우선권정보	FI-0005025 (1992-11-06)
발명자 / 주소	Tuominen Pertti (Espoo FIX) Kaartinen Niilo (Kuusisto FIX) Okkonen Unto (Masala FIX)
출원인 / 주소	Fluilogic Systems Oy (Espoo FIX 03)
인용정보	피인용 횟수 : 18 인용 특허 : 9

초록 ▼

The invention relates to a method and equipment for quantitatively dosing small amounts of liquid, especially in clinical or other similar wet-chemical analyzers. The dosing employs a liquid space, the volume of which can be changed and which is connected to a dosing channel so that, by increasing or decreasing the volume of the liquid space, a suction or an injection through the dosing channel is achieved. The liquid space is formed by flexible bellows which are freely movable back and forth to provide the reversible deformations which change the volume of the liquid space. The movements are effected using an actuator which is connected to the bellows without transmissions containing sliding surfaces. The actuator comprises precisely repeatable positions and is calibrated according to the invention by measuring the sizes of the dosages produced by the movements between the positions. The dosing is effected after that by selectively repealing the calibrated movements. The actuator can be formed by a stepper motor, and a cam shaft rotated by the stepper motor propelling the bellows back and forth. The nonlinear interdependent relationship between the rotation of the shaft and the change in the volume of the liquid space makes possible a wide range of calibrated dosage sizes.

대표청구항 ▼

A method for quantitative precision dosing of small amounts of liquid by use of a liquid space defined by a flexible bellows which is connected to a dosing channel, said bellows being adapted to move freely back and forth by means of an actuator having a range of precisely repeatable positions, movements of the actuator between said positions being transmitted to the bellows through a transmission mechanism without sliding movement in said transmission mechanism, the method comprising the steps of: calibrating the actuator by driving the actuator through a number of said positions, each driving movement of the actuator between two selective positions of said positions, producing a reversible change in a volume of the liquid space and a transfer of a corresponding volume of liquid by suction or injection through said dosing channel, and measuring said transferred amounts so as to establish a range of calibrated doses of liquid; and performing dosing by selecting a calibrated dose of liquid and driving the actuator between the two selected positions used for the calibration of the selected dose, the movement of the actuator being transmitted to the bellows to produce a change of the volume of the liquid space and suction or injection of an amount of liquid forming the dosed amount corresponding to said selected dose. An equipment for quantitative precision dosing of small amounts of liquid selected from a range of predetermined liquid doses, the equipment comprising: a liquid space limited by flexible bellows, said flexible bellows having a range of repeatable bellows positions corresponding to different volumes of said liquid space and being freely movable back and forth to enable reversible movements between said bellows positions, the liquid space volume changes produced by said movements defining said range of liquid doses, and said liquid space communicating with a dosing channel so that selective movements of the bellows together with a thereby increased or decreased volume of the liquid space produce selective doses from said range of liquid doses by means of suction or injection of liquid through the dosing channel; and an actuator which is, without transmissions containing sliding surfaces, connected to the bellows for moving the bellows, the actuator comprising a range of positions which can be precisely repeated for bringing the bellows into said repeatable bellows positions, the dosing being effected by selective steps of the actuator between said actuator positions causing the bellows to be moved between the corresponding bellows positions and a dose of liquid to be sucked or injected.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Proni Oscar (Hollywood FL) Fayer Ervin (Hollywood FL) Dominick George G. (Miramar FL) Cambareri Carmelo R. (Plantation FL), Bellows pump and actuating apparatus.
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Bender Lloyd F. (Hayward WI), Bellows type expansible chamber pump having separate biasing means.
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McGill Shane R. (3 Parrs Head Mews ; George Lane Rochester ; Kent GB2), Dispensing apparatus for frozen product.
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Miller Herbert L. (Roselle IL), Metering pump.
상세보기
Proni Oscar (Hollywood FL) James Bobby D. (Hialeah FL), Particle analyzing apparatus and method of moving particles in suspension through such apparatus.
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Bessman Samuel P. (7404 Woodrow Wilson Dr. Los Angeles CA 90046) Thomas ; Jr. Lyell J. (1900 Pelican Ave. San Pedro CA 90732), Piezoelectric driven diaphragm micro-pump.
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Dency George G. (Shrewsbury MA) Caramiciu Marius A. (Dracut MA), Programmable volume dispensing apparatus.
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Czech Manuel (Donaustauf DEX), Spraying apparatus having internal chamber selectively pressurized by a pressurizing device.
상세보기
Solomon Edward G. (Menlo Park CA), Stepping motor control procedure for achieving variable rate, quasi-continuous fluid infusion.
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이 특허를 인용한 특허 (18) 인용/피인용 타임라인 분석

Ineichen, Beatus; Meier, Martin, Apparatus for dispensing flowable substances.
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Ineichen, Beatus; Meier, Martin, Apparatus for dispensing flowable substances.
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Solera, Giuliano; Dall'Olio, Daniele, Apparatus for the delivery of fluid products.
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Solera, Giuliano; Dall'Olio, Daniele; Mazzalveri, Leopoldo, Device and method to deliver fluid products.
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Parrino Andrea IT; Manfredini Giorgio IT; Mazzalveri Leopoldo IT, Dispensing unit for a fluid dispensing machine, comprising a variable-volume pumping chamber, and machine comprising said dispensing unit.
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Dourdeville Theodore A., High pressure capillary liquid chromatography solvent delivery system.
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Dourdeville, Theodore A., High pressure capillary liquid chromatography solvent delivery system.
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Baggerman Antal F. J.,NLX ; Schwarzbach Daniel S. M.,NLX, Liquid dosing device.
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Tenkanen Tuomas,FIX ; Ronka Pekka,FIX, Method and an equipment for portioning liquid consignments.
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Kim Jin-Hun,KRX, Method and apparatus for encoding a contour image in a video signal.
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Ingenhoven, Nikolaus; Liebhard, Robert; Zuppiger, Adi; Hälg, Werner, Method for selecting pipetting parameters for a liquid.
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Kaartinen, Niilo; Kaartinen, Timo, Method for use in testing of liquid samples, a test unit utilizing the method and a system comprising such test units.
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Bjornson, Torleif Ove; Liebhard, Robert; Zuppiger, Adi; Heerklotz, Dirk, Pipetting apparatus with integrated liquid level and/or gas bubble detection.
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Bjornson,Torleif Ove; Liebhard,Robert; Zuppiger,Adi; Heerklotz,Dirk, Pipetting apparatus with integrated liquid level and/or gas bubble detection.
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Gutmann, Oliver; Oosterbroek, Edwin; Glauser, Michael; Heinrich, Michael Andreas; Bolliger, Jean-Pierre; Sarofim, Emad; Jaeggi, Rainer D., Processing units and methods for the processing of liquid samples.
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Kaartinen,Niilo, Quantitative dosing of small amounts of liquids.
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Jaeggi, Rainer D.; Gutmann, Oliver; Glauser, Michael; Hein, Heinz-Michael; Oosterbroek, Edwin; Heinrich, Michael Andreas, System for the analysis of liquid samples.
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David Seidler, Telescopic liquid dispenser.
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A	생활필수품
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[미국특허] Method and equipment for dosing small amounts of liquid quantitatively 원문보기