Source: https://patents.google.com/patent/HU226607B1/en
Timestamp: 2020-01-24 08:13:56
Document Index: 527203224

Matched Legal Cases: ['art 2', 'art 1', 'art 2', 'art 1', 'art 2', 'art.\n25']

HU226607B1 - Mechanical counter for a metering apparatus and metering apparatus - Google Patents
Mechanical counter for a metering apparatus and metering apparatus Download PDF
HU226607B1
HU226607B1 HU9903725A HU9903725A HU226607B1 HU 226607 B1 HU226607 B1 HU 226607B1 HU 9903725 A HU9903725 A HU 9903725A HU 9903725 A HU9903725 A HU 9903725A HU 226607 B1 HU226607 B1 HU 226607B1
HU9903725A
HU9903725A3 (en
HU9903725A2 (en
1996-12-19 Application filed by Boehringer Ingelheim Int filed Critical Boehringer Ingelheim Int
2000-03-28 Publication of HU9903725A2 publication Critical patent/HU9903725A2/en
2001-12-28 Publication of HU9903725A3 publication Critical patent/HU9903725A3/en
2009-04-28 Publication of HU226607B1 publication Critical patent/HU226607B1/en
229940071648 Metered Dose Inhaler Drugs 0 claims 1
229920001853 poly(butyleneterephthalate) Polymers 0 description 6
-1 poly tetrafluoroethylene Polymers 0 description 2
The scope of the description is 8 pages (including 1 page figure)
EN 226 607 Β1
The present invention relates to a mechanical counter for measuring apparatus for measuring powder, liquid or gaseous materials, and a measuring device having such a counter. The measuring device has, inter alia, two coaxially arranged housing portions that rotate relative to each other when operating the device. The number of metered doses of the substance, hereinafter referred to as "dose", is counted and displayed by the mechanical counter.
It is an object of the present invention to provide an optimal adaptation of such a mechanical counter for the reliable operation of the measuring device and to simplify the manufacture of the mechanical counter.
The invention is primarily, but not exclusively, the subject of the present invention. Designed for use with metered dose inhalers (MDI = Metered Dose Inhalers) as described in U.S. Patent No. 5,479,744 to WO91 / 14468, which is hereby incorporated by reference in its entirety. A measured amount of fluid (usually 5 MPa) is generated by pressure which is then sprayed through a nozzle having one or more very small openings (of the order of 25-500 pm 2 ). Preferred nozzle arrangements are described in U.S. Pat. No. 5,472,143 (and International Publication No. WO94 / 07607), incorporated herein by reference in their entirety. An energy storage device, such as a spring, is preferably loaded by hand with a rotatable saw teeth arrangement as described in U.S. Patent No. 4,6600,882 and GB 2291135, incorporated herein by reference in its entirety. Typically, a locking handle mechanism is used to hold the spring in a loaded position, which can be manually released and thereby pressurize the fluid dose, for example by a piston and cylinder arrangement. It can be used as a container and valve arrangement for refilling the cylinder. Further details can be found in PCT / EP96 / 04351 and in U.S. Pat. No. 08/726219, which are incorporated herein by reference.
Measuring devices are used, for example, in medical aerosol therapy for treating respiratory tract diseases. In such a situation, a liquid or powdered drug is sprayed to form an aerosol, by means of a nebulizer or by introduction into a gas stream. The drug is contained in a feeding container which can be inserted into the measuring device. The contents of the feed tank may be sufficient for a period of several days to several months. It is therefore necessary to indicate the amount of drug consumed or the amount of drug still present in the feed tank.
PCT Application WO-93/24167 discloses a display device for a drug dispenser. This display device comprises a ring which is coaxially disposed and rotatable relative to the dispenser, and which automatically rotates with each predetermined angle value for each dose applied by pressure from the dose dispenser through a latch drive, wherein a small portion of the ring is visible. The display device operates pneumatically when the medicine is inhaled.
U.S. Pat. No. 4,817,822 discloses a display device for a metered dose device comprising a display on a disc on a straight or rotatable disk adjacent the measuring device and driven by a locked wheel and a locking handle. Only a small part of the scale can be seen through a window.
PCT Application WO-86/05991 discloses a display device for measuring devices provided with a disc-shaped scale, with teeth located at the periphery of the disc and rotatable by means of a screw. Only a small part of the scale is visible through a window.
PCT Application WO-92/09324 discloses a display device for measuring devices in which the axial movement of the feed container within the housing is transferred to a rotatable scale by means of a locking handle and a screw drive, from which only a small portion can be seen through a window.
According to the PCT application WO-86/02275, a display device for a drug spray dispenser has a digital mechanical counter which is moved forward by the movement of the container in the house when a dose of the drug is dispensed from the feed container. This device consists of a large number of individual parts.
PCT Application WO-93/21980 discloses a two-part housing inhaler. One of the two parts is an operating control wheel. The two parts can be rotated relative to one another in the distance between two bumpers. The inhaler is equipped with a mechanical counter and the mechanical counter includes a rotatable spindle with a thread. The upper part of the thread closes with a slant in relation to the axis of the screw, while the lower part is substantially perpendicular to the axis of the screw. One end of the bolt has a toothed device, so that the screw can be rotated through a gear through the actuator wheel. The number of inhaler workflows is displayed using a scale and a pointer. The pointer includes a tip, the lower part of which is parallel to the upper part of the screw thread, and the upper portion parallel to the lower portion of the thread, so that the pointer can slide only in one direction along the screw. When the pointer reaches its lowest position, it stops the further rotation of the actuator wheel and indicates that the inhaler is no longer to be used.
A display device that is actuated pneumatically or mechanically by the movement of a pressurized tank and a housing in the housing of a measuring device is not suitable for measuring devices which have two compartments relative to each other.
HU 226 607 Β1 has a rotating housing part and a feed tank that is fixedly located in the measuring device.
Therefore, they were looking for ways to create a suitable mechanical counter for measuring devices with two rotatable housing parts.
According to claim 1 of the invention, a mechanical counter for a measuring device with two coaxially arranged housing portions which can be rotated relative to each other while operating the measuring apparatus and having at least one screwed spindle having an axis parallel to the axis of the measuring device is located in the vicinity of the peripheral surface of the measuring apparatus, and the spindle is rotatably mounted to the first housing portion by means of fittings adjacent to the spindle ends, and a toothed device at one end of the spindle located adjacent the second housing portion, at least one projection at the edge of the second housing portion having a rotating connection with a serrated device at the end of the spindle when the two housing portions rotate relative to each other and is provided with a slider connected to the spindle thread of the spindle and movable along the spindle and a scale adjacent to the slider, and the slider has at least one reset protrusion, and at least one resilient shaft on the slider that fits into the thread of the spindle.
Preferred embodiments of the invention are shown in FIGS. are listed in detail in the claims.
In the transmission, the toothed device and the protrusion (s) at the end of the spindle, preferably an involute tooth, are provided to ensure good rolling properties.
By rotating the two housing parts relative to one another, the measuring device can be operated. Preferably, the angle of rotation is an integer fraction of 360 degrees, preferably between 30 and 360 degrees. The displacement of the two housing portions relative to one another turns into a rotary movement of a spindle, which, in turn, causes a slider movement of the slider, wherein said transmission is a tooth at one end of the spindle and at least one projection at the edge of the second housing portion. The spindle rotation fittings are preferably snap fittings. The transmission ratio of the elongated type transmission device is determined by the number of projections and the number of teeth of the toothed device; it also determines the number of revolutions of the spindle, which corresponds to the operation of the measuring device. For each actuator operation, the spindle speed can range from 1/30 to 10. The thread pitch of the spindle on the spindle is adapted to the number of doses that can be applied from the feed tank to the measuring device and to the slider to travel on the spindle. When the spindle rotates, the slider on the spindle moves relative to the scale, which may be positioned, for example, on the first housing portion. The scale is preferably linear. The position of the slider indicates how much of the material to be measured has been removed from the feed tank, and how much remains in it. The direction of rotation of the spindle thread may be the same or opposite the direction of rotation of the housing parts relative to one another.
The slider essentially comprises a display ring, and at least one threaded shaft and at least an additional shaft with a returning projection. Preferably, a plurality of arms are provided and these stems are preferably flexible. The threaded stem part engages with the spindle thread in the spindle. The slider can be moved on the spindle for reset via the reset projection. When the slider is displaced, the threaded portion on the elastic shaft slides flexibly across the spindle thread without damage. The outline of the slider and housing is chosen so that the slider is protected from rotation on the spindle by a forced-pull connection. For example, at least one of the return protrusions may extend beyond the thread so as not to pass through the gap between the spindle and the peripheral surface of the first housing portion. This projection serves as a slip protection for the slider.
A notch may be applied at the other end of the spindle, which is opposite to the spindle of the spindle. Once the threaded portions on the elastic stems reach this cut, the slider stops moving. The slit serves as a slider to provide free movement, so that the slider is not damaged if the slider crosses the spindle during permissible operation of the meter.
Preferably, a casing can be fitted over the first housing portion to protect the meter and counter. This casing is axially releasably connected to the first housing portion in a predetermined position. The casing, when in the engaging position, cannot rotate relative to the first housing portion. Accordingly, the first housing portion may still rotate relative to the second housing portion, although the front housing portion is covered by the housing.
The scale, located opposite the slider, can be placed either on the front housing or on the inside or outside of the casing. The casing is made of transparent or transparent material per region.
At least one rigid driving means may be used on the inner side of the casing, which drive means slides the slider to its starting position at one end of the spindle by means of the reset projections when the casing is in place.
Flexible drive tools can be used instead of rigid driving devices. In this case, the slider returning projections can be provided with rigid legs.
When the slider is reset, it hits the stairs at one end of the spindle before the cover reaches its end position. The casing moves to its end position, in which case the elastic portion, i.e. the elastic arm, or the elastic drive means, is retracted and the slider is disengaged.
EN 226 607 Β1 from the vehicle. Accordingly, the slider is in its starting position, from which it moves when the spindle rotates.
In a special configuration of the counter, the toothed device at one end of the spindle is formed as a drive gear, which has four teeth, two of which are opposed to the tooth wider than the other two teeth. At the edge of the second housing part, there are two projections, between which there is a notch and the wider teeth of the drive gear roll. Preferably, this transmission structure has a transmission ratio such that a half spindle rotation has two operations of the measuring device, for example a half-turn of 360 degrees relative to each other. For example, if the rotation of the two housing portions should be 120 degrees relative to each other for the measuring device to function, the second housing portion should have three projections, offset by 120 degrees relative to each other. Furthermore, in this case the projections on the second housing part may also be present one by one. Then, the spindle will only continue to run on every third operation of the metering device, although each operation will be counted.
The wider teeth lie on the tooth on the inner or outer peripheral surface of the second housing part. Therefore, the spindle can only be rotated if the wider teeth can engage in the incision between the projections. This rotation lock arrangement always keeps the spindle in its starting position, which is provided when the rotary motion begins.
A larger number of containers containing the agent to be measured can be inserted in succession and used in the measuring device. For example, if the agent to be measured is a drug, it is necessary, for hygiene reasons, to limit the number of doses that can be measured with the multi-use measuring device. It is then necessary to count and display the total number of metered doses already dispensed by the metering device, or to indicate the number of doses that are still available. The mechanical counter described above can be further developed in various ways to achieve the outlined position.
In a first such improved embodiment, a gear is applied at the other end of the spindle, which is opposite to the drive side. At the corresponding end of the first housing part, a coaxial toothed ring is provided, preferably a flange which is rotatably mounted relative to the first housing portion and into which said gear is engaged. This serrated ring also rotates at a given angle at each turn of the spindle.
The flange has at least one first signal which, after rotation of the toothed ring relative to the first housing portion, is less than 360 degrees and after the emptying of a feed container is marked with a second signal which is fixedly fixed relative to the first housing portion. The number of markings on the flange is equal to the number of feed tanks, which is maximally permissible for the measuring device or the agent to be measured. The second marking may be placed on the first housing portion, but may be a window in the housing which is fitted to the first housing portion.
The flange may be provided with a scale instead of said markers, which practically continuously displays the total number of dosages delivered by the metering device, or the number of doses still available, for example, in a window. The toothed ring rotates up to 360 degrees to display the maximum permissible metered doses. For this purpose, a high gear ratio is required between the spindle and the rotation of the toothed ring, which gear ratio is structurally fixed by means of a suitable gear ratio between the included tooth numbers.
In another improved embodiment of the counter, the counter is provided with a second spindle, which can be similar and parallel to the first spindle and carry a slider which is preferably not reset. At one end of the first spindle there is a raised disc or gear which is connected to the gear at the corresponding end of the second spindle. In contrast to the slider on the second spindle, there is a fixed scale relative to the first housing portion, which scale is located on the first housing portion or on the Fitted casing. For this counter, the total number of doses already dispensed, or the number of doses still available, is shown by moving the slider on said second spindle.
Instead of the second spindle provided with the slider, the arrangement may have a rotatably mounted roller having a spiral line at its periphery with complete rotation along the entire length of the roller. The surfaces on both sides of said spiral line may be marked in different ways, preferably with two colors, such as red and white, or red and green. In this construction, the casing has a narrow window that is as long as the roller and through which a narrow strip on the roller surface is visible. The scale can be placed near this window and covers the entire length of the roller. The scale may correspond to the maximum number of metered doses or may be divided into sections, in accordance with the maximum number of permissible feed tanks.
The third embodiment of the counter has a second spindle which is similar to the first spindle but is located in another region of the peripheral surface of the measuring device. It is equipped with a transmission arrangement similar to the first spindle, but the gear ratio is consistent with the total number of allowable doses. This spindle is driven by projections at the edge of the second housing portion, preferably the protrusions already used to drive the first spindle.
In order to achieve a high gear ratio between the first and second spindles or the first spindle and the toothed ring, a single tooth transmission arrangement can be used in the arrangement instead of the gear on the first spindle, with the pinion on the second shaft or the toothed ring. turns one tooth at each turn of the first spindle. The gear ratio can range from 2: 1 to 10: 1.
The spindle or toothed ring rotation locking means (i.e., the unwanted motion blocking device) may be a handle or may form an anti-rotation device between the spindle and the assembly, or between the toothed ring and the front housing portion, or the special arrangement of the components, e.g. forcibly locking tooth arrangement. The slider is rotatably mounted on the spindle, according to the slider locking profile.
The components of the counter can be made of substantially any material. Preferably, this material is plastic, in particular by injection molding. For medical purposes, physiologically harmless substances such as poly (butylene terephthalate) (PBT) or PBT and Teflon poly tetrafluoroethylene compounds are used. Preferably, the materials are selected such that the various substances are in conflict with each other, such as PBT Teflon, as opposed to PBT or PBT with acrylbutadiene styrene.
The counter according to the invention can be used, for example, for a measuring device for high pressure spraying of a liquid drug. The liquid to be sprayed is located in a pressure-free feeder which is in communication with a miniaturized high-pressure device that generates the aerosol. For further details, see DE-OS 195 36 902.5, which is hereby incorporated by reference in its entirety. The high pressure device operates with a spring-operated latching tensioning mechanism, wherein the spring is tensioned by rotating the two housing parts relative to one another. For details, reference is made to DE-OS 195 45 226.7, which is hereby incorporated by reference in its entirety. The counter according to the invention automatically moves forward when the housing parts are turned relative to each other.
The invention will now be described in more detail with reference to the accompanying drawings (Figure 1), which illustrates a portion of a meter equipped with a counter. In this embodiment, the first housing portion 1 is rotated 180 degrees relative to the second housing part 2 to operate the metering device.
The first housing part 1 is rotatably mounted on the second housing part 2 in a single axis. The casing 3a, which is attached to it, includes the first housing part 1 and the counter. This casing 3a is detected in a retracted position by a dashed line and designated by reference numeral 3b. The number of metered doses and dosages taken from the feed tank at the given time is counted by the spindle 4 (rotary axis). This spindle 4 is rotatably mounted on the first housing portion 1 by the preferably snap-in fittings 5 and 6 which act as bearings. The groove 7, which aids in the assembly of the rotary assembly 5, serves to axially fix the spindle 4. The slider with the ring is provided with two elastic arms 10, which are provided with a threaded coupling portion and two resilient blades 12 on two arms 13. The notch 8 provides free movement of the threaded parts on the elastic stems at the end of their path.
On the inside of the casing 3a there are two guides 14 which, in the mounted position of the casing 3a, push back the slider 9 with its indicator ring to its initial position, at the end of the spindle 4, by the returning projections 12. When this is done, the indicator ring of the slider 9 relies on the stop 15 and the slider 9 is released as described above.
At one end of the spindle 4, a toothed device 16 is formed as a four-toothed drive gear having two (axially) narrow 17 teeth and two (axially) wide 18 teeth. The second housing part 2 carries an edge 19 and a projection 20 between which an opening 21 is provided. As mentioned above, the teeth 17 and 18, as well as the projections 19 and 20, have an evolutionary shape. At the other end of the spindle 4 is a gear 22 which engages the toothed ring 23. There are a plurality of numbered marks 25 on the flange 24 of the toothed ring 23, of which the current indication is displayed in the window 26 formed in the casing 3a, following a rotational movement of the toothed ring 23.
The position of the signal ring 9 slider relative to the labeled scale 27 indicates the number of metered doses dispensed from the feeding tank, or the number of doses that can be delivered from the container. When the feed tank is empty, the corresponding 25 numbered indication appears in the window 26. The illustrated counter includes the advantageous technical features of the above-described invention, but does not include the second and third "enhancements", which are also discussed, and the description given should be read in the light of these preferred technical features discussed above.
- advance automatically when the weighing device is operated;
- is not demanding for tolerance values and therefore works reliably and safely;
- the transmission can be designed to cover a wide area;
- displaying the number of dosed dosages dispensed and / or the number of measurable dosages still available, practically continuously and with adequate accuracy;
- inaccessible and not erroneous when using the measuring apparatus;
- can be used for a larger number of feed containers, one after the other;
- can be produced from each feed container for a different number of metered doses and different maximum number of feed containers to be used for the metering device;
- can be combined with the weighing equipment and does not require substantial modification;
- can be produced in miniaturized form and therefore requires only a small volume;
the individual parts of the counter are preferably made of plastic, so that they do not require lubrication and have low friction;
- no material may enter the material to be measured from the counter;
- a small number of individual parts that can be produced at low cost by injection molding;
- the counter can be reset whenever a feed tank is empty; as a result, the initial position of the slider on the spindle can be clearly adjusted as soon as a new feed tank is inserted;
- the spindle, which counts the dispensing device operations when using a feed tank, can be combined with a second spindle or a toothed ring, which means that the dispensing device can be used reliably for a predetermined number of metered doses or for the sequential application of predetermined amounts of feed containers. The period of use of the dispenser can be verified reliably.
1. A first housing part (1) and a second housing part (2) arranged coaxially to a mechanical counter meter which can be rotated relative to one another when the meter is operated, which includes a counter
at least one threaded spindle (4) having an axis parallel to the axis of the measuring apparatus and located in the vicinity of the peripheral surface of the measuring apparatus;
- the spindle (4) is rotatably mounted on the front housing portion (1) by means of two fittings (5, 6) adjacent the spindle ends;
further comprising a toothed device (16) at one end of the spindle (4) adjacent the second housing portion (2);
a slider (9) connected to the thread of the spindle and movable along the spindle (4);
a scale (27) located adjacent to the slider;
characterized in that at the edge of the second housing part (2) there is at least one projection (19, 20) which is rotatably connected to the spindle (4) by means of the toothed device (16) and at least one reset of the slider (9) (12). ) and an elastic arm provided with at least one threaded coupling part (11) on the slider, the threaded engagement portion engaging the spindle thread.
A mechanical counter according to claim 1, characterized in that it has two rotary assemblies (5, 6) which are preferably snap-fit fittings.
The mechanical counter according to claim 1 or 2, characterized in that the drive pinion (16) is provided as a toothed device (16) at one end of the spindle (4) and is located adjacent to the second housing portion (2) and the second housing portion (2) at the periphery of the first housing part (1) and the second housing part (2).
A mechanical counter according to claim 3, characterized in that the drive gear for the toothed device (16) has four teeth and two projections (19, 20) on the second housing part (2).
A mechanical counter according to claim 3, characterized in that it has a drive gear for the four-toothed toothed device (16), wherein two opposing teeth (18) are wider than the other two teeth (17) where the wider teeth (18) ) the side portions of the second housing part (2) are supported by the inner circumferential surface of the second housing part (2); breadth.
6. A mechanical counter according to any one of claims 1 to 3, characterized in that the transmission ratio is such that two measurements of the measuring device fall on a half spindle speed.
7. Referring to Figures 1-8. A mechanical counter according to any one of claims 1 to 3, characterized in that the thread pitch of the spindle (4) is adapted to the number of dosages to be measured and to the displacement path of the slider.
8. Referring to Figures 1-7. A mechanical counter according to any one of claims 1 to 3, characterized in that the spindle (4) is provided with a device for preventing unwanted movement, preferably a forceps.
9. A mechanical counter according to any one of claims 1 to 3, characterized in that at least one elastic shaft (10) with a threaded coupling part (11) is provided on the slider, the threaded coupling part (11) engaging in the thread of the spindle (4).
A mechanical counter according to claim 9, characterized in that a recess (8) is provided at the other end of the spindle (4) for receiving said threaded coupling part (11).
11. Referring to Figs. Mechanical counter according to one of Claims 1 to 3, characterized in that the slider has at least one reset protrusion (12).
12. Mechanical counter according to one of Claims 1 to 3, characterized in that the first housing part (1) has a housing (3a, 3b) which is axially removable to the front housing part (1) and covers the spindle (4) and the housing (3a, 3a, 3a, 3a). 3b) contains transparent or transparent material per region.
A mechanical counter according to claim 12, characterized in that the casing (3a, 3b) has at least one slider (14) on its inner side.
14. References 1-13. A mechanical counter according to any one of claims 1 to 3, characterized in that at the other end of the spindle (4) a gear (22) is provided, there is also a toothed ring (23) with a device for preventing unwanted movement, preferably a flange (24) having a toothed ring ( 23) the gear (22) is engaged and the toothed ring (23) is coaxially rotatable relative to the first housing portion.
A mechanical counter according to claim 14, characterized in that at the flange (24) of the toothed ring (23) there is at least one first indication, which is a rotation of the toothed ring (23) relative to the first housing portion (1) of less than 360 degrees. after a second signal, which is fixed to the first housing portion (1).
A mechanical counter according to claim 15, characterized in that the first housing part (1) has a second signal or a window (26) is provided in the housing (3a, 3b) on the first housing part (1).
17. References 1-13. A mechanical counter according to any one of the preceding claims, characterized in that there is a second spindle having an unwanted displacement device, which is disposed parallel to the first spindle (4), furthermore having a non-displaceable slider, pivotally attached to the second spindle and having the single spindle gear assembly consisting of a raised disc at one end of the first spindle (4) and a gear at the corresponding end of the second spindle, into which the protruding disc at the end of the first spindle (4) engages, finally has a scale (27) for the second spindle. placed next to the slider on the spindle.
18. A mechanical counter according to any one of the preceding claims, characterized in that it has a roller on which a spiral line extends over the entire length of the roller and the surfaces on both sides of the spiral line are marked differently, preferably with two colors, and a narrow transparent strip is provided in a housing (3a, 3b) through which the scale of the circumferential surface of the roller and preferably the transparent strip (27) is visible.
19. References 1-13. A mechanical counter according to any one of claims 1 to 3, characterized in that it has a second spindle having an unwanted motion barrier device disposed parallel to the first spindle (4), and a slider and a one-piece gear assembly mounted rotatably on said second spindle at the end of the second spindle. a tooth arrangement as close as possible to the second housing portion (2) and the projections (19, 20) at the edge of the second housing portion (2) which engage in a tooth arrangement at the end of the second spindle when the housing parts are rotated relative to one another.
20. A measuring device with two coaxially arranged housing portions that can be rotated relative to one another when operating the measuring device, characterized in that the device is rotatable. A mechanical counter according to any one of the preceding claims.
21. A measuring device according to claim 20, characterized in that the spindle (4) is embedded in a rotary assembly (5.6) in a peripheral region of a housing portion so that it rotates by the movement of the other housing part and the indicator ring slider (9) is rotated by the thread. movable relative to the scale (27), the arrangement being such that the displacement of the signal ring slider (9) relative to the scale (27) provides a measure of the operating number of the device.
22. A measuring device according to claim 21, characterized in that the slider (9) is periodically removable from the thread for resetting.
23. A measuring device according to claim 21 or 22, comprising counting and displaying means for passing the slider (9) on its path.
24. The 21-23. Measuring device according to one of Claims 1 to 4, characterized in that the axis of the spindle (4) is parallel to the axis of rotation of the housing parts and that the spindle (4) has a gear (22) which cooperates with the spindle (4) on the second housing part.
25. The measuring device of claim 24, wherein the spindle (4) is rotated only during a portion of the relative rotation of the housing portions.
26. The 20-25. A measuring device according to any one of claims 1 to 3, characterized in that the measuring device is a metered dose inhaler.
EN 226 607 Β1 Int. CLG01F 11/20
Published by Hungarian Patent Office, Budapest Responsible leader: Zsuzsanna Töröcsik Windor Bt., Budapest
HU9903725A 1995-12-28 1996-12-19 Mechanical counter for a metering apparatus and metering apparatus HU226607B1 (en)
HU9903725A2 HU9903725A2 (en) 2000-03-28
HU9903725A3 HU9903725A3 (en) 2001-12-28
HU226607B1 true HU226607B1 (en) 2009-04-28
HU9903725A HU226607B1 (en) 1995-12-28 1996-12-19 Mechanical counter for a metering apparatus and metering apparatus
EP (2) EP1254678B1 (en)
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2010-08-30 MM4A Lapse of definitive patent protection due to non-payment of fees