EP2125223B1 - Appareil pièce rapportée pour bouteille pour la manipulation de liquides - Google Patents

Appareil pièce rapportée pour bouteille pour la manipulation de liquides Download PDF

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Publication number
EP2125223B1
EP2125223B1 EP07856393.9A EP07856393A EP2125223B1 EP 2125223 B1 EP2125223 B1 EP 2125223B1 EP 07856393 A EP07856393 A EP 07856393A EP 2125223 B1 EP2125223 B1 EP 2125223B1
Authority
EP
European Patent Office
Prior art keywords
piston
piston rod
valve block
cylinder
sensor
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.)
Active
Application number
EP07856393.9A
Other languages
German (de)
English (en)
Other versions
EP2125223A2 (fr
Inventor
Dieter Böhm
Wolfgang Ettig
Peter Mahler
Jürgen Schraut
Roland Wohner
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.)
Brand GmbH and Co KG
Original Assignee
Brand GmbH and Co KG
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 Brand GmbH and Co KG filed Critical Brand GmbH and Co KG
Priority to EP19158248.5A priority Critical patent/EP3508274B1/fr
Priority to EP14002517.2A priority patent/EP2799141B1/fr
Publication of EP2125223A2 publication Critical patent/EP2125223A2/fr
Application granted granted Critical
Publication of EP2125223B1 publication Critical patent/EP2125223B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/0203—Burettes, i.e. for withdrawing and redistributing liquids through different conduits
    • B01L3/0206—Burettes, i.e. for withdrawing and redistributing liquids through different conduits of the plunger pump type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/08—Ergonomic or safety aspects of handling devices
    • B01L2200/087—Ergonomic aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/14—Process control and prevention of errors
    • B01L2200/141—Preventing contamination, tampering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/14—Process control and prevention of errors
    • B01L2200/143—Quality control, feedback systems
    • B01L2200/146—Employing pressure sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/02—Identification, exchange or storage of information
    • B01L2300/024—Storing results with means integrated into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/02—Identification, exchange or storage of information
    • B01L2300/025—Displaying results or values with integrated means
    • B01L2300/027—Digital display, e.g. LCD, LED
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/04—Closures and closing means
    • B01L2300/046—Function or devices integrated in the closure
    • B01L2300/048—Function or devices integrated in the closure enabling gas exchange, e.g. vents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/06—Auxiliary integrated devices, integrated components
    • B01L2300/0627—Sensor or part of a sensor is integrated

Definitions

  • the invention relates to a bottle attachment device for handling liquids, in particular designed as a burette, having the features of the preamble of claim 1.
  • the invention thus generally relates to a bottle attachment device for handling liquids.
  • These devices involve the accurate metering and delivery of fluids from a storage bottle or other storage container, with accurate metering in picking up a partial fluid volume from the storage bottle or the like into the device and / or dispensing a partial fluid volume out of the device to the outside into a container.
  • Bottle attachments of the type in question are in particular burettes and dispensers.
  • Such bottle top devices are widely used in chemistry, biology and pharmacy in the laboratory and in production.
  • liquid in the present context refers to liquids which are used extensively in chemistry, biology, pharmacy, etc. in the laboratory and in production, in particular liquids having a relative viscosity of up to about 300 (viscosity based on the viscosity of water under normal conditions ). It is therefore the fluid range from very fluid to slightly viscous.
  • a manually operated burette is used in titration to determine the unknown amount of a solute from the consumption of a reagent liquid of known concentration. To ensure proper and economic analysis work, a burette is required to quickly and accurately dispense and display the particular amount of fluid. High demands are placed on the precision of the liquid dispensing and on the operator safety (General Catalog 600 "Laboratory Equipment from Brand” of BRAND GMBH + CO KG 09/01, No. 9963 00, "Burette Digital III", pages 27 to 34 ).
  • the bottle top device is described in its operating position, that is mounted in its position on a storage bottle and aligned substantially vertically.
  • valve block In the valve block is regularly a suction valve, which allows to suck liquid from the storage bottle by means of a suction pipe.
  • a suction valve Approximately horizontally from the valve block from an ejection line extends with a discharge valve therein. Since the discharge line protrudes approximately horizontally from the valve block and often still carries an additional switching valve, this is the side from which an operator works with the bottle top unit. This page will be referred to below as “front” or “front”. The opposite side is the “back” or “back”.
  • a display with corresponding operating elements is regularly at the front.
  • a well-known bottle attachment for handling liquids (see the General Catalog 600 "burette Digital III", as stated above) is characterized in that the cylinder-piston assembly is covered by a closed top outer housing from above. This outer housing moves together with the piston rod relative to the cylinder upwards. To accomplish this, located on the cylinder a vertically extending rack, with a pinion on a drive shaft which is mounted in the outer housing, meshes.
  • the piston drive this bottle attachment device is designed for manual operation and therefore carries the drive shaft there at both ends outside the outer housing each have a manual control knob.
  • a bottle attachment in the form of a piston burette with digital display, in which a piston drive, the display, a sensor assembly and an electronic control receiving housing is in a fixed, non-variable relative position to the valve block ( DE-C-35 01 909 ).
  • the teaching of the invention is based, Here, the outer housing is not closed, but the piston rod passes through the housing from bottom to top already in the lowest position of the piston in the cylinder. When the piston is raised, the piston rod moves up out of the housing. By an upwardly connected bellows the entry of dirt and dust through the passage opening for the piston rod is prevented in the case,
  • a displacement measuring strip is located directly on the piston rod, which extends axially in the direction of the piston rod ( DE-C-35 01 909 ).
  • the measuring strip is an optical scale and the sensor array is an incident light system.
  • the measuring strip is part of a capacitive system, which also includes the sensor. Opposing electrodes are arranged so that two pairs of measuring capacitors for measuring the relative movement between the measuring strip and the sensor are formed.
  • the piston rod carries a magnetic strip
  • a read head adjacent to the piston rod is fixed there in the housing a read head provided which is aligned with the magnetic measuring strip and separated from it by a gap.
  • An electronic control circuit is coupled to the read head, which reads the measurement information on the magnetic strip and injects corresponding pulses in the control circuit. This converts the pulses and controls a digital display, which in turn indicates the volume of liquid dispensed based on the relative movement between the piston and cylinder.
  • the teaching is now based on the overall problem of optimizing the previously explained bottle top device for measuring handling of small amounts of liquid in terms of distance measurement and their evaluation.
  • the section number of the position measuring strip is limited for mechanical reasons (typically a section is about 1 mm long), a significantly higher resolution of the measured values can only be achieved by directly evaluating the analog sinusoidal (and cosinusoidal) signals, rather than just their zero crossings to use.
  • One has a sinusoidal signal and a cosinusoidal signal because one normally operates with two magnetic field sensitive encoders which are offset in pitch of the displacement gauge so as to emit two signals offset by a quarter of a period.
  • Mixed-signal controllers are microcontrollers that connect various electronic processing functions, which are also suitable for evaluating the sensor signals via interpolation software, with the functions of an A / D converter.
  • a mixed-signal microcontroller replaces a three-stage arrangement of A / D converter, processing stage with processing software and output stage.
  • Such a mixed-signal microcontroller is regularly far cheaper to use at the signal level of AMR sensors than a three-stage arrangement.
  • Microcontrollers are offered by different providers with different power spectra (see, for example, the data sheet "MSP 430 x 33 x MIXED SIGNAL MICROCONTROL-LERS", February 1998, Texas Instruments). With a mixed-signal microcontoller you not only create a simple signal processing solution, but in particular a very low power consumption both during operation and when idle. (For detailed information, please refer to the relevant data sheets, in particular the previously mentioned data sheet.)
  • Mixed signal controllers can be realized in different versions, for example as PSoC (Programmable System on a Chip), as DSP (Digital Signal Processor) or as FPGA (Field Programmable Gate Array), the latter has a purely digital input converter, so a discrete upstream A / D converter makes the overall arrangement a mixed signal controller of the type described.
  • PSoC Programmable System on a Chip
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the device according to the invention a structure can be realized, which ensures safe operation and at the same time easy handling.
  • the power consumption of the measuring system is low and the cost of production are also lower than in classic bottle top devices.
  • Fig. 1 shows a preferred embodiment of a bottle attachment for handling liquids, here in the form of a burette.
  • Bottle-top dispensers emerge, for example, from the DE-U-88 00 844 and in particular the EP-A-0 542 241 , which will be discussed below.
  • FIG. 1 It has an outer housing 2 and is a total of a mounting assembly 3, here a cap, attached to a bottle neck of the storage bottle 1, screwed here.
  • a display 4 At the top of the outer housing 2, aligned in front, there is a display 4 with a display field 5, in particular for a digital display, preferably with LCD elements, as well as with actuating elements, in particular actuating buttons 6.
  • a discharge line 7 which is arranged in the illustrated embodiment in an angle-shaped holder 8 and closed at the end by means of a closure cap 9 for closing and as drip protection.
  • the illustrated bottle top unit has in the outer housing 2, first a valve block 10. At this is attached or integrally formed the already mentioned mounting assembly 3, with the fact of the valve block 10 is mounted on the storage bottle 1. At the same time then also the outer housing 2 is mounted on the storage bottle 1.
  • valve block 10 as a one-piece made of plastic, in particular made of chemical resistant plastic component, which is provided with a plurality of channels and internals.
  • the construction largely corresponds to the valve block ofaunaufsatzdispensers, from the EP-A-0 542 241 is known and belongs to the prior art.
  • Fig. 1 shows a preferred embodiment of a bottle attachment according to the invention for handling liquids, here in the form of a burette.
  • Bottle-top dispensers emerge, for example, from the DE-U-88 00 844 and in particular the EP-A-0 542 241 , which will be discussed below.
  • FIG. 1 It has an outer housing 2 and is a total of a mounting assembly 3, here a cap, attached to a bottle neck of the storage bottle 1, screwed here.
  • a display 4 At the top of the outer housing 2, aligned in front, there is a display 4 with a display field 5, in particular for a digital display, preferably with LCD elements, as well as with actuating elements, in particular actuating buttons 6.
  • a discharge line 7 which is arranged in the illustrated embodiment in an angle-shaped holder 8 and closed at the end by means of a closure cap 9 for closing and as drip protection.
  • the illustrated bottle top unit has in the outer housing 2, first a valve block 10. At this is attached or integrally formed the already mentioned mounting assembly 3, with the fact of the valve block 10 is mounted on the storage bottle 1. At the same time then also the outer housing 2 is mounted on the storage bottle 1.
  • valve block 10 as a one-piece made of plastic, in particular made of chemical resistant plastic component, which is provided with a plurality of channels and internals.
  • the construction largely corresponds to the valve block ofaunaufsatzdispensers, from the EP-A-0 542 241 is known and belongs to the prior art.
  • the mounting assembly 3 is designed as compared to the valve block 10 freely rotatable cap.
  • a suction valve insert 11 to which an intake line 12, which is shown shortened here for simplicity, is connected to the bottom of the storage bottle 1 into it.
  • At the top closes to the intake valve insert 11 in the valve block 10 to an intake passage 13, from which at about half the height in Fig. 2 branched off to the right discharge channel 14.
  • a discharge valve insert 15 is located in a recess of the valve block 10 on the discharge channel 14. This is part of a valve body 16 of a changeover valve 17 attached to the valve block 10.
  • the discharge line 7 adjoins the changeover valve 17 in the holder 8.
  • the switching valve 17 has a valve body 16 rotatable about a vertical axis of rotation valve body 18, which also has a in Fig. 1 recognizable knob 19 can be adjusted by hand.
  • a return passage 20 which continues in the valve block 10 to a downwardly outgoing return line 21.
  • the switching valve 17 is switched to passage, so that the discharge channel 14 is connected to the discharge line 7.
  • the discharge channel 14 is connected to the return passage 20, so that liquid is conveyed in the circulation from the storage bottle 1 and the return line 21 back into the storage bottle 1.
  • the valve block 10 further includes near the back of a bottle venting line 22, which opens in a rearwardly, radially open plug receptacle 23.
  • a closing this plug 24 or a similar closure element in the plug receptacle 23 is a closing this plug 24 or a similar closure element, but having a small passage opening, so that the interior of the storage bottle 1 is connected via the bottle venting line 22 and this passage in the plug 24 with the ambient atmosphere.
  • a pressure equalization in the storage bottle 1 is possible.
  • existing valve block 10 is a preferably and also made of glass existing cylinder 26 fixed and sealed against the valve block 10 in a cylinder mount 25. Specifically, the cylinder 26 is compressed in the cylinder receptacle 25.
  • the illustrated bottle top unit While in the area of the valve block 10, the illustrated bottle top unit is designed according to the already extensively known and very well-proven prior art, the construction in the field of cylinder-piston arrangement is significantly different than before.
  • Fig. 2 combined with Fig. 3 and Fig. 4 makes it clear that initially a cylinder 26 surrounding, upwardly beyond the cylinder 26 also extending, supporting frame 30 is provided.
  • This frame 30 is connected at the lower end with the valve block 10 fixed in an axially precisely determined position, but in principle detachable from the valve block 10.
  • the solubility of the frame 30 from the valve block 10 is hereby realized in that at the upper edge of the valve block 10, an external thread is provided and that the frame 30 has a flange below, which is provided with a cap 31 with internal thread.
  • the larger illustration in the Fig. 3 and 4 makes it clear that the cap 31 is guided on the frame 30 and can escape upwards.
  • the frame 30 can thus be brought first with its lower edge in the desired position on the valve block 10. Then, while maintaining this position, the cap 31 can be screwed onto the external thread on the valve block 10 and the frame 30 can be fixed relative to the valve block 10.
  • the frame 30 is the supporting member for the piston drive 29 and determines its position relative to the valve block 10.
  • the frame 30 is expanded and extended block-like upwards there and has there various recesses for receiving various parts of the piston drive 29. This will be discussed later.
  • a releasably connected to the valve block 10 outer housing 2 is provided. This encloses the frame 30 on the outside, thus forming the outer shell of the bottle top unit and protects the internal components. It extends beyond the piston drive 29 on the frame 30 in any case slightly upwards and is closed in the illustrated and preferred embodiment above.
  • Fig. 2 in conjunction with the Fig. 3 and 4
  • the cap 31 can not be operated easily here. Rather, it is provided for safety reasons and for reasons of accessibility in the outer housing 2, that the cap 31 can be operated only with a special tool 32.
  • This tool 32 can be seen in Fig. 2 top left in a suspension at the back of the outer housing 2.
  • the small stroke of the piston 27 in the bottle cap device according to the invention facilitates the closed design of the outer housing 2, because the complete stroke of the piston rod 28 can be handled within the outer housing 2.
  • the outer housing 2 still does not have to be made excessively high. Also, it does not have to ride along with the piston rod 28 in whole or in part.
  • the construction according to the invention thus increases the operating safety of the bottle top unit.
  • the lower the bottle top unit the higher the stability of a stock bottle 1 equipped with such a bottle top unit.
  • the stroke quotient has a value of just under 2.0 in the illustrated embodiment for the nominal volume of 25 ml and a value of approximately 50 ml for the nominal volume 1.4. With a nominal volume of 100 ml, which would represent a rather unusually large arrangement, one would come to a value of about 1.0, which would mean an effective diameter of the piston 27 of about 50 mm.
  • the execution of the cylinder 26 as a calibrated glass tube with extremely high precision further increases the accuracy of the bottle top unit in total.
  • the use of a calibrated glass tube as a cylinder 26 is useful and expedient here because of the measures taken otherwise.
  • Fig. 3 and 4 show, moreover, that in the upper part of the frame 30, a drive shaft 33 of the piston drive 29 is mounted.
  • the primary objective of the invention is a manually actuated bottle attachment device with an electronic, in particular digital measured value acquisition and display.
  • the piston drive 29 is designed for manual actuation and the drive shaft 33 carries a manual operation knob 38 at one end or at each end outside the outer housing 2. It can be seen the two hand control knobs 38 left and right on the outer housing 2 in Fig. 1 ,
  • the geared connection between the drive shaft 33 and the pinion 35 is designed so that a rotation of the manual operation knob 38 causes a downward movement of the piston 27 forward and downward.
  • Ergonomic studies have shown that one can combine a good dosing accuracy with a quick recording or dispensing large amounts of liquid optimally, if the maximum Stroke of the piston 27 five to ten of the manual operation knob 38 corresponds.
  • the design of the piston 27 in the cylinder 26 is important.
  • the piston 27 is made in one piece with the piston rod 28, or designed as a separate part and fixedly attached to the piston rod 28, in particular screwed.
  • the illustrated embodiment shows the piston rod 28, and screwed thereto by means of a central fastening screw 39, the piston 27, which here carries him a bottom side and circumferentially comprehensive slide piece 40 made of a very good sliding material, in particular PTFE.
  • the sliding piece 40 forms a cylinder 26 under pressure applied to the sliding ring 40a, which is deposited to generate pressure with a piston 27 supported on the spring ring 42 from a preferably also resistant to chemicals material.
  • the spring ring 42 is shown in the drawing as a hollow chamber ring, for example made of chemical-resistant elastomer material. It is essential that the sliding ring 40 a itself does not have to apply the force to achieve the sealing effect of the sliding nozzle 40 on the inner surface of the cylinder 26. This is taken over by the spring ring 42, which is adapted for it. Incidentally, it can hardly be recognized in the drawing that the outer peripheral surface of the sliding ring 40a can still be structured in order, for example, to realize a multi-start scraper ring.
  • the piston 27 is not driven down against the valve block 10, but the piston rod 28 or the piston 27 up against a stop 43.
  • the stop 43 can be adjustable and should be removable in any case in order to be able to pull out the piston 27 together with the piston rod 28, for example for cleaning or sterilization measures.
  • the frame 30 is not designed as an open framework, but as a substantially closed housing, which is the case in the present embodiment (see in particular Fig. 2 and Fig. 4 ), it is recommended that the frame 30 in any case with a front view section 44 or a corresponding window and, as provided here ( Fig. 5 ), to provide a rear sight 45 or a corresponding window. This allows you to look into the cylinder 26 from the front or the back.
  • a viewing cutout or a window in the frame would not be of any use if the outer casing 2 were not covered by the viewing cutout 44; 45 or window of the frame 30 would have a corresponding window 46 and 47, respectively.
  • a viewing window may optionally be UV-protective colored, for example in brown color.
  • the front window 46 in the outer housing 2 is also in Fig. 1 to recognize.
  • Ventilation openings 48 which expediently to achieve convection in the middle, z. B. concealed under the manual operation knob 38, or below near the valve block 10 and above the upper end of the outer housing 2 are arranged.
  • the illustrated and preferred embodiment shows that the overhead ventilation openings 48 are arranged on the head of the outer housing 2, preferably under an actuating button 49 arranged on the upper side.
  • a large-area actuator button 49 which is labeled here with the word "Clear”, that is, represents a zeroing button. Such is often used when working with a burette.
  • the actuating button 49 on the top of the outer housing 2 is designed as a push button. Their operation is thus carried out by pressure from the top of the outer housing 2. This makes a quick and error-free operation possible without a serious tilting moment is exerted on the bottle top unit and the storage bottle 1 underneath. Unlike the arranged on the front of the outer housing 2 operation buttons 6 thus no holding back the outer housing 2 is required.
  • the large-area actuating button 49 offers the possibility of hiding the ventilation opening 48 thereunder. This shows Fig. 2 ,
  • the outer housing 2 has a front housing shell 51 and a rear housing shell 52 detachably connected thereto.
  • the front housing shell 51 is hooked behind the valve block 10 and firmly anchored in the middle (or top) of the frame 30. It is screwed there.
  • the rear housing shell 52 is suspended at the top of the front housing shell 51. Below it is on the valve block 10 by means of the plug 24, which sits in the plug receptacle 23 and belongs to the bottle venting line 22, fixed. Other fixation options are given, for example, here by a screw. Appropriately here is the simultaneous use of the plug 24, also because this is particularly well accessible from the back of the bottle top device. In Fig. 5 the rear housing shell 52 has been removed and accordingly also the plug 24 is missing.
  • FIG. 2 and Fig. 5 First, located in the outer housing 2, here in the front housing shell 51, more precisely attached to this, from the rear (as here), accessible from the front and / or from above, to the interior of the This receptacle 53 is used to hold electronic devices, in particular a populated circuit board 54. In the receptacle 53 is also the electronics of the display 4 including the display panel fifth
  • the receiving compartment 53 continues under the actuating button 49 angularly into the rear housing shell 52.
  • the electronic devices under the operation button 49 can be protected in this receptacle 53.
  • this is another board 55, which carries a pushbutton 56, which is actuated by the actuating button 49.
  • This further board 55 is connected in the illustrated and preferred embodiment of the circuit board 54 via a film hinge 57 and sits even in a slot 58 of the receptacle 53.
  • the film hinge 57 is formed in the illustrated and preferred embodiment of a circuit film web.
  • the receptacle 53 could be completed to the front by a possibly also the display 4 and the operation buttons 6 carrying compartment cover 59. Then, the receptacle 53 could be equipped with removed compartment cover 59 from the outside.
  • the terminal 60 represents an external interface of the electronic devices that can be used in any conventional manner.
  • the ventilation opening 48 below the actuating button 49 of the ventilation of the receiving compartment 53 are in Fig. 5 indicated, laterally below the actuating button 49 lying ventilation openings for the ventilation of the interior of the outer housing 2 in the rest responsible.
  • the receiving tray 53 is at least in the rearwardly extending portion narrower than the outer casing 2 and is arranged centrally.
  • Fig. 5 combined with Fig. 2 in that two battery compartments 61, namely right and left of the receiving compartment 53, are arranged in the outer housing 2, and in this case also in the front housing shell 51, ie, attached thereto.
  • Each battery compartment 61 is closed by a cover 62 to the interior of the outer housing 2 in the rest.
  • the lid 62 is in Fig. 2 recognizable, he has a handling tab 63.
  • Fig. 5 recognizes the battery compartments 61 without the lid 62 and without batteries. Of course, the battery compartments 61 are sealed by the lid 62 against the vapors occurring in the outer housing 2.
  • the two in Fig. 5 recognizable battery compartments 61 leave between them a free space in which the piston rod 28 can go up. Accordingly also has the wall of the receiving compartment 53 here a corresponding course, which gives the piston rod 28 the necessary space.
  • the openable design of the outer housing 2 with the substantially fixed front housing shell 51 and the easily removable rear housing shell 52 is a simple way for the user to disassemble the cylinder-piston assembly, the piston 27 together with the piston rod 28 on the one hand and the cylinder 26 on the other hand to clean and also to change the piston 27 or the slide 40 if necessary.
  • the piston rod 28, preferably on the opposite side of the tooth row 34 carries an axially extending on the piston rod 28 gauge 64 and that adjacent to the piston rod 28, preferably in the upper part of the frame 30, a Sensor arrangement 65 is arranged with a sensor 66 oriented on the measuring strip 64.
  • a direct measured value recording on the piston rod 28 is provided, as it is known in principle from the above-described prior art. Play in translation devices, as occurs in electromechanical data acquisition, is systematically excluded here. This is particularly useful here if the other measures for stiffening the mechanical arrangement and increasing the accuracy are also taken.
  • the illustrated embodiment shows that the measuring strip 64 is here on one side positively aligned with the piston rod 28.
  • the measuring strip 64 is inserted with a one-sided axial stop 67 in a pocket on the piston rod 28 and potted with a preferably chemical-resistant potting compound 68.
  • the potting compound 68 on the one hand down the stop 67 in a small amount, on the other hand, top of the upper end of the piston rod 28.
  • a potting compound 68 is easier to perform chemical resistant than normal glue. She has the rest a sufficient inherent elasticity to accommodate the minimum displacements of the measuring strip 64 relative to the piston rod 28.
  • Fig. 12 the assembly with piston 27, piston rod 28 and measuring strip 64 is shown. Contrary to the execution after Fig. 2 the measuring strip 64 as in the embodiment according to Fig. 11a / 11b disposed in the piston rod 28 near the central axis of the piston 27. The measuring strip 64 is not as in the embodiment according to Fig. 2 held. In this embodiment, the measuring strip 64 sits vertically near the piston 27 on the stop 67. The upper opposite end of the measuring strip 64 is moved by a spring element 28a vertically downward on the stop 67. Both contact surfaces are inclined, so that the measuring strip 64 is held in the direction of its lateral abutment against the piston rod 28.
  • Fig. 12 keeps flexible the measuring strip 64 on the piston rod 28 by the spring element 28a. Temperature changes and different elongations have no influence on the attachment. In addition, the assembly of the measuring strip 64 without aids and / or a curing time is positive in terms of costs for production and repair.
  • the spring element 28a and the piston rod 28 are made in one piece.
  • the spring element 28a could also be a separate component, which is fastened to the piston rod 28 and consists of another material with good elastic properties.
  • the spring element 28a could be designed so that it the measuring strip 64th in the direction of its lateral abutment on the piston rod 28 positively, for example by means of a molded bracket holds.
  • the distance measuring strip 64 (measuring strip 64) is magnetized in sections spaced apart or partially magnetized in opposite directions, with a pitch between 0.3 mm and 2.0 mm, preferably and as a compromise between resolution and cost about 1 , 0 mm.
  • the illustrated and so far preferred embodiment shows a particularly expedient embodiment of a non-optical, in particular a magnetic field-sensitive sensor assembly 65.
  • This is located in a measuring strip 64 and the interior of the outer housing 2 out completely closed receiving pocket 69.
  • This is in the illustrated embodiment in the Used frame 30, namely screwed to this with slot connections 70.
  • the sensor 66 of the sensor assembly 65 is disposed in the receiving pocket 69 at its the measuring strip 64 side facing behind a thin-walled wall portion 71. The purpose of the arrangement is to bring the sensor 66 as close as possible to the measuring strip 64, without actually touching it, and while maintaining a gas-tight seal of the sensor assembly 65 to the interior of the outer housing 2.
  • FIG Fig. 6, 7 and 8th Details of the sensor arrangement 65 with the sensor 66 in the receiving pocket 69 are shown in FIG Fig. 6, 7 and 8th shown.
  • the sensor 66 of the sensor arrangement 65 is seated on a board 74 inserted in the receiving pocket 69 in a slide-in guide 73, namely at the front edge thereof Fig. 3 and Fig. 6 on the left immediately adjacent to the thin wall portion 71.
  • the wall section 71 here has, for example, only a thickness of about 0.1 to 0.2 mm. If the pitch of the measuring strip 64 is selected to be larger, the distance between the sensor 66 and the measuring strip 64 can also increase. Then easier to produce, in particular injection-moldable wall sections can be designed, which will regularly have a slightly larger wall thickness of about 0.5 mm.
  • the receiving pocket 69 consists here of a total of a chemical-resistant and pourable temperature-stable plastic material, in particular PEEK. Length and width of the receiving pocket 69 are about 20 mm, the thickness of about 8 to 10 mm.
  • the wall portion 71 of the receiving pocket 69 can not be made in one piece with the receiving pocket 69, but separately. It would then be attached to the receiving pocket 69.
  • the receiving pocket 69 may have an opening in the region of the wall section 71.
  • a gas-tight film can be welded onto such an opening or otherwise fixed with the aid of and without auxiliaries, the opening on the receiving pocket 69.
  • Such a gas-tight film usually has a thickness of about 10 microns to about 500 microns.
  • This film now forms the wall section 71, which separates the sensor 66 from the measuring strip 64 in a gastight manner. In this way one can come to a very small distance of 0.1 mm or less.
  • the sensor arrangement 65 also has on the board 74 the evaluation circuit 72 for evaluating the output signals of the sensor 66 and for controlling the display 4.
  • the evaluation circuit 72 is constructed as a system solution with individual or multiple discrete components.
  • a space-saving, energy-saving and cost-effective evaluation circuit 72 is achieved with the use of a mixed-signal controller, which evaluates the converted analog sensor signals directly via an interpolation software.
  • the evaluation circuit 72 can also be used with a software solution that is pure in the extreme case by means of a microprocessor or microcomputer without departing from the spirit of the teachings of the present invention.
  • Fig. 7 shows a perspective view of the receiving pocket 69 with inserted board 74 obliquely from behind.
  • the board 74 is not yet shed.
  • the soldered to the board 74 and not shown with molded interface cable It can be provided to completely shed the board 74 in the receiving pocket 69, and indeed with a chemical-resistant potting compound.
  • Fig. 8 shows an arrangement of a particularly useful sensor 66 for a sensor assembly 65 of a device according to the invention.
  • the sensor 66 is designed as a magnetoresistive sensor system based on the AMR effect.
  • this operating principle may be on the publication of Dr. med. Erik Lins, SENSITEC GmbH "Magnetoresistive with Optical Precision", of August 1, 2005, the disclosure of which is incorporated by reference into the disclosure content of the present application. This publication has been freely available on the Internet since August 2005.
  • Fig. 8 briefly shows two Wheatstone bridge circuits, offset by 45 ° from each other, so that a cosine signal (C) and a sine signal (S) is generated, taps at + C / -C and + S / -S.
  • the magnetization direction of the measuring strip 64 is defined by H, the angle between H and the direction of current flow is indicated by ⁇ .
  • ⁇ By forming quotients of sine and cosine (arctangent function), the angle information becomes independent of the amplitude of the signals.
  • the working distance between the sensor 66 and measuring strip 64 is not particularly critical.
  • the separate evaluation of the sine and cosine signals provides some redundancy and allows due to the fact that the Sum of squares is equal to 1, a self-monitoring of the sensor 66 and an offset amplitude correction.
  • a circuit arrangement 72 as described in US Pat Fig. 9 is shown as a block diagram.
  • the sensor 66 is supplied with a clocked supply voltage 80, which is adjustable via an amplitude setting 81 on the sensor 66.
  • the designated outputs (cos, sin) of the sensor 66 are connected to amplifiers 82, each with offset adjustment 82 '.
  • the amplifiers 82 there is a branch on the one hand to comparators 83 for comparison with a reference voltage 84, on the other hand to analog / digital converters 75 with downstream modules 85 and normalization stages 86.
  • the assemblies 75, 85, 86, 87, 88 and 89 are in the present, so far preferred solution implemented in a mixed-signal controller.
  • a mixed-signal controller see the related notes and quotation point included in the general part of the description.
  • a magnetoresistive measuring system is already quite expedient anyway, at least much cheaper than an optoelectronic measuring system.
  • the evaluation takes place by means of the interpolation software with an ON / OFF duty cycle of about 0.1 to about 0.02, preferably between about 0.05 and about 0.03, in particular with an ON / OFF duty cycle. Time of about 0.6 ms to about 0.1 ms, in particular between about 0.3 ms and about 0.15 ms. It is particularly recommended that the interpolation software with an interpolation between 200 and 1,000, in particular between about 400 and about 600, preferably from about 500 works.
  • the adjustment speed of the piston 27 will not be greater than about 50 mm / s. Then the interpolation rate is tuned. This gives a resolution of the measuring path of about 2 microns and an accuracy of the measured value over the full range of about 10 microns, the whole in a temperature range of + 10 ° C to about + 40 ° C.
  • FIG. 11 Another and independent teaching is based on the embodiment of Fig. 11 (Fig. 11a, Fig. 11b ) explained.
  • this construction is for a magnetic field sensitive Sensor system, in particular a magnetoresistive sensor system.
  • Fig. 11a shows a precise alignment of the piston rod 28 on a side guide 90. It is provided here that on the same side on which the sensor assembly 65 is located, a side guide 90 is provided for the piston rod 28 and the sensor 26 is close to, preferably approximately at the level of Side guide 90 is arranged. This ensures that in the target position of the piston rod 28 in abutment against the side guide 90 and the sensor 66 is aligned relative to the positioned on the piston rod 28 measuring strip 64 exactly. The parallelism of the measuring strip 64 with the sensor 66 is optimal over the full displacement of the piston rod 28.
  • Fig. 11b shows in conjunction with Fig. 11a in that a measurement error with respect to the distance measurement in the axial direction could also result from an inclination of the piston rod 28 in the cylinder 26, in particular relative to the piston 27.
  • This measurement error occurs in a device of the type in question because of the otherwise achieved high precision. It is caused by the fact that the piston rod 28 in the region of the piston drive 29 has a certain lateral play, for example of 0.3 mm. This leads to a minimal, but disturbing in the context of the present measurement accuracy inclination of the piston rod 28, which causes a Wegmeßcons.
  • the measuring strip 64 on the piston rod 28 on the one hand and the sensor assembly 65 to the sensor 66 on the other hand are arranged so that when located in the target position piston rod 28 the the sensor 66 facing surface of the measuring strip 64 forms a plane which is closest possible to or on the longitudinal center axis of the piston rod 28.
  • This arrangement rule for the measuring strip 64 on the piston rod 28 is based on the recognition that in a Auflichtsystem the surface of the measuring strip 64 is the interface between the measuring strip 64 and sensor 66. If I place these as close as possible to the longitudinal central axis of the piston rod 28, I minimize the measurement error that results from the play-related inclination of the piston rod 28.
  • the sensor 66 which detects the magnetic field of the measuring strip 64 lies next to or on the longitudinal center axis of the piston rod 28 as soon as possible.
  • Fig. 11a, b shown.
  • the interface in the magnetoresistive measuring system is the sensor 66, which is penetrated by the field lines of the periodically magnetized measuring strip 64. Tilts the measuring strip 64 as in Fig. 11b
  • the output field of the field lines moves slightly to the left, the direction of the field lines is also tilted by the tilting, these run slightly upward from the measuring strip 64 in the direction of the sensor 66.
  • the interface namely at the sensor 66, slightly changes only the amplitude, which is correctable, but not the phase position, which is crucial for the distance measurement.
  • the interface is somewhere between the two previously described orientations.
  • Fig. 12 shows a particularly interesting constructive solution for fixing the measuring strip 64 in the piston rod 28, taking into account the above-mentioned boundary conditions. This has already been explained above.
  • the illustrated embodiments show that the sensor arrangement 65 is not arranged on the outer housing 2, but on the dimensionally stable frame 30.
  • the entire metrological chain is completely concentrated on the frame 30, so that its dimensional stability leads to the excellent accuracy of the bottle attachment device according to the invention.
  • the measuring strip 64 is an optical scale and the sensor arrangement 65 is a high-resolution incident-light system, in particular with four incident-light diodes. Then, the construction in the area of the sensor arrangement 65 is of course different from what has been described above.
  • the accuracy of measurements in the bottle-top device according to the invention can be increased to an accuracy R of approximately +/- 0.06% and a coefficient of variation VK of approximately 0.02% at nominal volumes of 25 ml and 50 ml. These are values that otherwise can only be achieved by high-precision motorized bottle attachments.
  • the high accuracy of the bottle attachment device according to the invention is also due to the fact that all mechanically moving parts are axially fixed relative to the valve block 10 precisely and dimensionally stable. This, in conjunction with the direct measurement acquisition directly on the piston rod 28 makes a backlash in reversing the direction of actuation superfluous.

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Claims (15)

  1. Appareil pièce rapportée pour bouteille pour la manipulation de liquides, en particulier exécuté comme une burette, avec un système cylindre-piston pour le prélèvement et la distribution précis de volumes partiels de liquide avec un cylindre (26) et un piston (27) se déplaçant hermétiquement dans le cylindre (26) avec une tige de piston (28) ressortie vers le haut du cylindre (26),
    avec une bande de mesure de déplacement (64) magnétique, disposée directement sur la tige de piston (28) ou sur un composant raccordé en position relative fixe à la tige de piston (28), s'étendant axialement dans le sens de déplacement de la tige de piston (28), avec un système de détection (65) sensible au champ magnétique disposé proche de la tige de piston (28) ou sur le composant fixe dans l'appareil avec un capteur (66) orienté sur la bande de mesure (64), séparé de la bande de mesure (64) uniquement par un intervalle, de préférence avec un affichage (4) pour la quantité de liquide respectivement manipulée ou à manipuler et avec un circuit d'exploitation (72) électronique pour évaluer les signaux de sortie du capteur (66) et le cas échéant pour piloter l'affichage (4), le circuit d'exploitation électronique (72) pouvant être réalisé également par le logiciel d'un microprocesseur ou d'un micro-ordinateur, et
    la position du piston (27) par rapport au cylindre (26) pouvant être déterminée au moyen du circuit d'exploitation (72),
    caractérisé
    en ce que la bande de mesure (64) est magnétisée à distance par sections ou, de préférence magnétisée en sens inverse par sections,
    en ce que le capteur (66) est exécuté comme un système de détection magnétorésistif à partir duquel des signaux de détection analogiques sinusoïdaux peuvent être produits lors d'un mouvement relatif du capteur (66) par rapport à la bande de mesure (64),
    en ce que le circuit d'exploitation (72) comporte un contrôleur de signaux mixte qui comporte un logiciel d'interpolation, et
    en ce que les signaux de détection analogiques sinusoïdaux du système de détection magnétorésistif peuvent être directement évalués par le logiciel d'interpolation au moyen du contrôleur de signaux mixte et ainsi la position du piston (27) peut être déterminée par rapport au cylindre (26).
  2. Appareil pièce rapportée pour bouteille selon la revendication 1 caractérisé en ce que le contrôleur de signaux mixte remplace un système à trois étages composé d'un convertisseur A/N, d'un étage de traitement avec logiciel de traitement et d'un étage de sortie.
  3. Appareil pièce rapportée pour bouteille selon la revendication 1 caractérisé en ce que le contrôleur de signaux mixte est exécuté comme un système programmable sur une puce, comme un processeur de signaux numériques ou comme un réseau prédiffusé programmable sur site, ce dernier le cas échéant avec un convertisseur analogique-numérique placé en amont.
  4. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications 1 à 3 caractérisé en ce qu'au moyen du logiciel d'interpolation, l'évaluation peut être exécutée avec un taux d'impulsions de 0,1 à 0,02, de préférence entre 0,05 et 0,03, en particulier avec un temps de Marche de 0,6 ms à 0,1 ms, en particulier entre 0,3 ms et 0,15 ms et/ou en ce que le logiciel d'interpolation est conçu sur un taux d'interpolation entre 200 et 1 000, en particulier entre 400 et 600, de préférence de 500.
  5. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications 1 à 4 caractérisé en ce que la bande de mesure (64) n'est pas disposée sur la tige de piston (28) ou sur le composant raccordé à celle-ci en position relative fixe, mais de façon stationnaire et le système de détection (65) par contre est monté sur la tige de piston (28) ou sur le composant raccordé à celui-ci en position relative fixe.
  6. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications 1 à 5 caractérisé en ce que la bande de mesure (64) est introduite dans un logement sur la tige de piston (28) ou sur le composant raccordé à celle-ci et est au moins coulée sur une de ses surfaces périphériques avec de préférence une masse de remplissage (68) résistante aux produits chimiques, pour lequel, de préférence, la bande de mesure (64) est introduite avec une butée (67) axiale unilatérale dans le logement sur la tige de piston (28) ou le composant raccordé à celle-ci, pour lequel, de préférence encore, la butée axiale unilatérale (67) dans le logement de la tige de piston (28) est la surface tournée vers le piston (27).
  7. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications 1 à 6 caractérisé en ce que la bande de mesure (64) est introduite dans un logement sur la tige de piston (28) ou sur le composant raccordé à celle-ci et est maintenue flexible sous l'effet d'une force à son extrémité opposée au piston (27) ou à la butée (67) au moyen d'un élément de ressort (28a) s'appuyant sur la tige de piston (28) en direction du piston (27) ou de la butée (67) et/ou en direction de son appui latéral sur la tige de piston (28), pour lequel, de préférence, l'élément de ressort (28a) est formé en une pièce sur la tige de piston (28).
  8. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications 1 à 7 caractérisé en ce que la bande de mesure (64) est une bande de matière plastique ou de céramique additionnée de poudre magnétique, en particulier une bande céramique et le système de détection (65) un système magnétorésistif à haute résolution, pour lequel, de préférence, la division des sections magnétisées de la bande de mesure (64) se situe entre 0,3 mm et 2 mm, de préférence 1 mm.
  9. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications précédentes caractérisé en ce que le système de détection (65) est monté dans un logement de réception (69) complètement fermé jusqu'à la bande de mesure (64), pour lequel, de préférence, le logement de réception (69) est muni de raccords à trou oblong (70) pour l'orientation exacte du logement de réception (69) sur la bande de mesure (64) et/ou le capteur (66) dans le logement de réception (69) est disposé sur le côté de celui-ci tourné vers la bande de mesure (64) derrière une section de paroi (71) du logement de réception (69), qui comporte une épaisseur de 0,1 mm à 0,5 mm.
  10. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications précédentes avec un bloc de distribution (10), avec un agencement de fixation (3) monté en dessous sur le bloc de distribution (10) ou formé intégralement pour fixer le bloc de distribution (10) sur une bouteille de réserve (1), avec le cylindre (26) monté en haut hermétiquement sur le bloc de distribution (10), en particulier dans un logement cylindrique (25) du bloc de distribution (10), contre le bloc de distribution (10), fait de préférence en verre et avec un entraînement de piston (29) disposé au-dessus du cylindre (26), se trouvant en liaison d'entraînement avec la tige de piston (28)
    caractérisé
    en ce qu'un cadre (30) porteur en une pièce, entourant le cylindre (26), s'étendant vers le haut au-dessus du cylindre (26) vers le dehors est prévu, qui reçoit l'entraînement de piston (29) et est raccordé au bloc de distribution (10) de manière à pouvoir être démonté, pour lequel le raccordement a lieu de préférence au moyen d'un élément de fixation axialement rigide unique, en particulier par vissage au moyen d'un capuchon d'accouplement (31).
  11. Appareil pièce rapportée pour bouteille selon la revendication 10 caractérisé en ce que le cadre (30) est exécuté comme un boîtier muni d'une échancrure avant (44) ou fenêtre et le cas échéant d'une échancrure arrière (45) ou fenêtre et en ce que le boîtier extérieur (2), en particulier en recouvrement avec l'échancrure (44, 45) ou fenêtre du cadre (30) comporte un regard (46, 47) correspondant, le cas échéant teinté protégeant contre les UV, pour identifier les bulles d'air.
  12. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications précédentes avec un bloc de distribution (10) caractérisé en ce que le piston (27) ne peut pas être déplacé en dessous contre le bloc de distribution (10), mais en haut contre une butée (43) et en ce que dans cette position, il existe un intervalle entre le bas du piston (27) et le fond du cylindre (26), de préférence la butée (43) pouvant être déplacée et/ou enlevée.
  13. Appareil pièce rapportée pour bouteille selon la revendication 10 et le cas échéant la revendication 11 ou 12 caractérisé en ce que dans la partie supérieure du cadre (30) est logé un arbre d'entraînement (33) de l'entraînement de piston (29) et en ce que l'entraînement de piston (29) est exécuté pour un actionnement manuel et l'arbre d'entraînement (33) porte à une extrémité ou à chaque extrémité en dehors du boîtier extérieur (2) un bouton de commande manuel (38), pour lequel, de préférence, le raccordement à mécanisme entre l'arbre d'entraînement (33) et le pignon (35) est conçu de telle manière qu'une rotation du bouton de commande manuel (38) vers l'avant et le bas cause une descente du piston (27) .
  14. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications précédentes avec un bloc de distribution (10), un agencement de fixation (3) monté en dessous sur le bloc de distribution (10) ou formé intégralement pour fixer le bloc de distribution (10) sur une bouteille de réserve (1), pour lequel le cylindre (26) est monté hermétiquement en haut sur le bloc de distribution (10), en particulier dans un logement cylindrique (25) du bloc de distribution (10), hermétiquement contre le bloc de distribution (10), avec un entraînement de piston (29) se trouvant en liaison d'entraînement avec la tige de piston (28) et avec un boîtier extérieur, (2) recouvrant depuis le dessus le système cylindre-piston (26-28), fermé en haut.
    caractérisé
    en ce que sur le côté supérieur du boîtier extérieur (2) est disposée au moins une touche de commande (49) pouvant être enfoncée vers le bas pour actionnement, pour laquelle il s'agit en particulier d'une touche de position zéro ou d'une touche de réinitialisation.
  15. Appareil pièce rapportée pour bouteille selon l'une quelconque des revendications précédentes caractérisé en ce que le quotient de levage, donc le rapport entre la course de levage maximale du piston (27) et le diamètre actif du piston (27) se situe entre 1 et 3, de préférence entre 1,3 et 2,2, pour lequel de préférence la course de levage maximale du piston (27) est de 50 mm et le quotient de levage pour un volume nominal de 25 ml est de 2,0 et pour un volume nominal de 50 ml de 1,4.
EP07856393.9A 2006-12-07 2007-12-06 Appareil pièce rapportée pour bouteille pour la manipulation de liquides Active EP2125223B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19158248.5A EP3508274B1 (fr) 2006-12-07 2007-12-06 Appareil posé sur bouteille destiné à la manipulation de liquides
EP14002517.2A EP2799141B1 (fr) 2006-12-07 2007-12-06 Dispositif pour la manipulation de liquides à attaché à une bouteille

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202006018527 2006-12-07
DE202006018526 2006-12-07
PCT/EP2007/010580 WO2008068013A2 (fr) 2006-12-07 2007-12-06 Appareil pièce rapportée pour bouteille pour la manipulation de liquides

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP14002517.2A Division EP2799141B1 (fr) 2006-12-07 2007-12-06 Dispositif pour la manipulation de liquides à attaché à une bouteille
EP14002517.2A Division-Into EP2799141B1 (fr) 2006-12-07 2007-12-06 Dispositif pour la manipulation de liquides à attaché à une bouteille
EP19158248.5A Division EP3508274B1 (fr) 2006-12-07 2007-12-06 Appareil posé sur bouteille destiné à la manipulation de liquides

Publications (2)

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EP2125223A2 EP2125223A2 (fr) 2009-12-02
EP2125223B1 true EP2125223B1 (fr) 2015-12-02

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EP14002517.2A Active EP2799141B1 (fr) 2006-12-07 2007-12-06 Dispositif pour la manipulation de liquides à attaché à une bouteille
EP07856393.9A Active EP2125223B1 (fr) 2006-12-07 2007-12-06 Appareil pièce rapportée pour bouteille pour la manipulation de liquides
EP19158248.5A Active EP3508274B1 (fr) 2006-12-07 2007-12-06 Appareil posé sur bouteille destiné à la manipulation de liquides

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US (1) US8142738B2 (fr)
EP (3) EP2799141B1 (fr)
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WO (1) WO2008068013A2 (fr)

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DE3278154D1 (en) 1982-06-04 1988-04-07 Brand Rudolf Gmbh & Co Plunger type burette mounted on a flask
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DE3501909C1 (de) 1985-01-22 1986-07-10 Witeg-Glasgeräte Helmut Antlinger KG, 6980 Wertheim Kolbenbürette
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US5862958A (en) 1997-03-21 1999-01-26 Barnstead/Thermolyne Corporation Bottle top dispenser
DE10106463A1 (de) 2001-02-13 2002-08-14 Hirschmann Laborgeraete Gmbh Digitalbürette und Verfahren zum Anzeigen des Dosiervolumens einer solchen Digitalbürette
US20050194407A1 (en) * 2001-06-29 2005-09-08 Bach David T. Precision fluid dispensing system
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US6899254B1 (en) * 2004-01-20 2005-05-31 Plas-Pak Industries, Inc. Venting seal for dispenser
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Also Published As

Publication number Publication date
CN103285951A (zh) 2013-09-11
EP2799141B1 (fr) 2019-05-01
WO2008068013A2 (fr) 2008-06-12
EP2125223A2 (fr) 2009-12-02
EP3508274B1 (fr) 2024-02-28
CN103285951B (zh) 2015-01-14
WO2008068013A3 (fr) 2008-09-18
EP2799141A2 (fr) 2014-11-05
EP2799141A3 (fr) 2015-01-21
US20100021349A1 (en) 2010-01-28
EP3508274A1 (fr) 2019-07-10
US8142738B2 (en) 2012-03-27

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