EP4638021A1 - Kartuschenkolben - Google Patents
KartuschenkolbenInfo
- Publication number
- EP4638021A1 EP4638021A1 EP23837257.7A EP23837257A EP4638021A1 EP 4638021 A1 EP4638021 A1 EP 4638021A1 EP 23837257 A EP23837257 A EP 23837257A EP 4638021 A1 EP4638021 A1 EP 4638021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cartridge
- edge
- cartridge piston
- ridges
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/76—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston
- B65D83/768—Containers or packages with special means for dispensing contents for dispensing fluent contents by means of a piston the piston or movable bottom being pulled upwards to dispense the contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
- B05C17/00579—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container comprising means for allowing entrapped air to escape to the atmosphere
Definitions
- the invention relates to a cartridge piston which has a piston bottom with a media side and an actuation side, a piston shaft and a first edge. Furthermore, the invention relates to a cartridge for storing a fluid with such a cartridge piston and a discharge system with such a cartridge piston.
- Such a cartridge piston such a cartridge and such a dispensing system are generally used in conjunction with guns for dispensing a fluid, for example an adhesive.
- Cartridges can have either a single fluid container with a single fluid or, for dispensing multi-component materials, two or more fluid containers, each of which stores a component of the material to be produced. If the cartridge has two or more fluid containers, a cartridge piston is arranged in each of the fluid containers in order to convey the respective fluid to outlets of the cartridge. For this purpose, the cartridge pistons can be moved in the fluid containers and lie at least substantially sealingly against the inner walls of the fluid containers.
- a static mixer is used for discharge, by means of which a single material flow can be produced from two starting material flows.
- the components are mixed to form a mixture that is as homogeneous as possible and emerge as a mixture at its opening.
- Static mixers are characterized by the fact that they preferably have no moving parts and the material flows to be mixed must be moved through them by means of a pump function.
- EP 1 908 703 B1 relates to a cartridge piston with an upper side facing a cartridge content, a lower side, an outer wall, an inner support body and radial connecting webs between the outer wall and the inner support body, wherein a stiffening body connected to the connecting webs is arranged between the outer wall and the inner support body, wherein the connecting webs on the underside of the cartridge piston have a gap between the outer wall and the stiffening body, wherein the gap in the connecting webs extends at least to half the height of the cartridge piston.
- a first aspect of the invention relates to a cartridge piston, having a piston bottom with a media side and an actuation side, a piston shaft and a first edge which closes off the piston bottom, wherein a surface of the media side has at least three ridges which extend, in particular radially, from the center of the cartridge piston outwards to the first edge, wherein two adjacent ridges and the first edge delimit regions, wherein each region forms a depression in the surface of the media surface opposite the ridges and the first edge, and wherein in each depression, in particular at the lowest point of the depression, an opening is formed which connects the media side to the actuation side in a fluid-communicating manner.
- the first edge is arranged on the media side in the area of the piston shaft.
- the at least three ridges meet in the center of the cartridge piston so that they form a stem shape.
- a second aspect of the invention relates to a cartridge for storing a fluid with a cartridge piston.
- a third aspect of the invention relates to a dispensing system with a cartridge and at least one attachment, in particular a mixer and/or a closure plug.
- a media side within the meaning of the invention is preferably any side, in particular the front side, of the cartridge piston which, during intended use of the cartridge piston, comes into contact with the medium, in particular fluid, which is stored in the cartridge.
- an actuation side within the meaning of the invention is preferably that side, in particular the front side, of the piston base from which the cartridge piston is actuated during intended use.
- actuation takes place by means of a so-called pistol into which a cartridge is inserted.
- a burr in the sense of the invention is a kink in a surface that protrudes into space.
- the invention is based on the approach of gradually forcing a gas, in particular air, which is located between the medium with which the cartridge is filled and the piston inserted into the cartridge, to openings in the cartridge piston when closing a filled cartridge.
- the gas can flow through the openings to the actuating side of the cartridge piston and in this way reach the rear, open area of the cartridge and escape into the environment.
- the surface of the piston base on the media side having at least three ridges. These three ridges divide the surface of the filled medium into different sections.
- the gas collects in the depressions, which are formed in the areas between adjacent ridges and the first edge. With three ridges, there are three depressions. An opening is arranged in each of these depressions. The opening is preferably located in the area of the first edge.
- the cartridge piston preferably has six ridges and correspondingly six openings. This results in a particularly advantageous division of the Surface of the media side in which the areas form somewhat isosceles triangles.
- the burrs When the burrs hit the medium, they spread the medium to all sides of the surface of the medium side of the piston base. At the same time, the burrs cut into the medium. This significantly reduces the force that must be applied to move the cartridge piston or to press the cartridge piston onto the medium.
- the openings 10 are only blocked by the medium relatively late.
- the medium only reaches the holes when the gas has escaped from the cartridge.
- the openings are arranged in the area of the first edge or on the first edge.
- the invention makes use of the fact that the medium with which the cartridge is filled often forms a heap in the center of the cartridge. This heap comes into contact with the ridges first, and successively other areas of the surface of the media side come into contact with the medium, with the air gradually escaping towards the first edge and thus towards the opening.
- the opening is arranged at the lowest point of the recess, which is formed by the adjacent ridges and the first edge.
- the surface of the media side rises, particularly in the limited areas, towards the center of the cartridge piston.
- the surface of the media side preferably has a curvature. Such a curvature is preferably convex in shape.
- the rise towards the center of the cartridge piston promotes the flow of the medium filled in the cartridge from the center to the outside of the cartridge piston. This is particularly advantageous if the filled medium forms a heap in the center of the cartridge, as previously described.
- the rise reduces the actuating force that must be applied to move the cartridge piston. This actuating force is lower the smaller the area of the media side that comes into contact with the medium at the same time.
- the at least three ridges each have an edge and side surfaces that slope down from the edge to the depressions.
- the ridges therefore preferably form the shape of a triangular prism.
- the edge and the sloping side surfaces displace the medium particularly well when the ridges penetrate into its surface.
- the rim has an edge and a surface that slopes down from this edge to the respective depression. This also promotes the displacement of the filled medium by the rim.
- a groove is formed by the surface of the piston head in the limited areas and the first edge, in which the openings are arranged.
- the groove is preferably interrupted, in particular exclusively, by the ridges. The groove also promotes the flow of the gas away to the openings through which the gas can escape to the actuation side.
- the channel runs at least substantially parallel to the edge. This ensures that the channel is at substantially the same distance from the center of the cartridge at every point.
- a first support wall is arranged on the actuation side, which is arranged radially offset inwards with respect to the piston shaft and runs parallel to it, a gap being formed between the piston shaft and the first support wall.
- the first The supporting wall makes the cartridge piston more solid, and a sealing ring for the openings can be arranged in the gap.
- the openings open into the gap. This allows the openings to be closed by means of a sealing ring in the gap.
- the cartridge piston has a sealing ring which is designed to cover the openings on the actuation side, in particular at least substantially in a fluid-tight manner. This allows the openings to be closed as soon as the cartridge piston is pressed against the medium filled into the cartridge.
- a ring in the sense of the invention is an element which has an opening in its centre.
- the sealing ring can be arranged in the gap. This ensures particularly advantageous storage of the sealing ring.
- the sealing ring and the piston shaft and/or the support wall are designed in such a way that the sealing ring can assume a closed position and an open position, wherein the sealing ring in the closed position covers the openings on the actuation side, in particular at least substantially in a fluid-tight manner, and in the open position promotes a fluid flow between the openings and the environment.
- the sealing ring can be stored in the open position on the cartridge piston before the openings are closed.
- the piston shaft and/or the first support wall has a first recess and a second recess, which are arranged offset in the direction of a longitudinal axis of the cartridge piston, wherein the sealing ring has a projection which extends into the first recess or in the second recess.
- connecting webs run from the first supporting wall inwards. This allows the cartridge piston to be made even steeper.
- a second support wall is arranged on the actuation side, which is arranged radially inwardly offset with respect to the first support wall and at which the connecting webs end. This also achieves a further increase in the stiffness of the cartridge piston.
- the piston shaft has on its inner side and/or the first support wall on its outer side and/or the sealing ring has at least one groove in the direction of a longitudinal axis of the cartridge piston.
- the groove preferably runs, in particular exclusively, in the region of the first recess, which is further away from the piston base and thus defines the opening position of the sealing ring.
- the groove promotes a fluid flow between the openings and the environment in the opening position of the sealing ring.
- the piston shaft has a second edge, wherein the second edge is arranged on the actuation-side end of the piston shaft.
- the second edge improves the centering of the cartridge piston in the cartridge.
- the second edge forms a further seal against an inner wall of the cartridge.
- the piston shaft has a third edge, wherein the third edge is preferably arranged approximately in the middle of the piston shaft.
- the third piston edge also improves the centering of the cartridge piston in the cartridge and creates an additional seal.
- Figure 1 a perspective top view of an embodiment of a
- Figure 2 another perspective view of the embodiment of the
- Figure 3 a plan view of the first embodiment of a
- Figure 4 a cross-sectional view through the device shown in Figure 2
- Figures 5 to 14 different views of a first embodiment of a cartridge piston
- Figures 15 to 25 different views of a second embodiment of a cartridge piston.
- Figure 1 shows an embodiment of a discharge system for fluids of a multi-component material.
- Such a dispensing system is described below with reference to a two-component adhesive as a multi-component material. However, it is obvious to the person skilled in the art that the dispensing system can be used to dispense any type of two-component material.
- the dispensing system comprises a cartridge 22 and an attachment 24.
- the attachment 24 is shown in Figure 1 by a so-called static mixer.
- a static mixer is characterized by the fact that it has no moving parts, but that the mixing is brought about by the movement of the two components through the mixer 24.
- the cartridge 22 has a first, larger fluid container 22a and a second, smaller fluid container 22b.
- the relative size of the fluid containers 22a, 22b results from the mixing ratio that is to be achieved with the dispensing system. It is therefore obvious to the person skilled in the art that the sizes of the fluid containers 22a, 22b shown here are not restrictive.
- the cartridge 22 has a locking element 27, which in the illustrated embodiment is designed as a screw cap.
- the screw cap 27 is designed to interact with a shoulder or foot of the attachment 24 in order to seal the attachment 24 with the cartridge 22.
- the cartridge has a base (not shown) on which the locking element 27 designed as a screw cap is mounted. In Figure 1, this base is largely hidden behind the screw cap 27.
- Figure 2 shows another perspective view of the dispensing system. In contrast to Figure 1, it is not the closed front side of the cartridge 22 that is visible, but the open front side of the cartridge 22.
- a closure plug is now shown as attachment 24 in Figure 2, which closes the cartridge 22 while the components filled into the cartridge are stored. In this case, the components cannot be dispensed.
- the cartridge piston 1 can be seen in the opening of the larger fluid container 22a. Such a cartridge piston 1 is also present in the smaller fluid container 22b. However, due to the smaller opening, it is not visible in this view.
- FIG. 3 shows a plan view of the opened side of the cartridge 22. Now both cartridge pistons 1 can be seen in the larger fluid container 22a as well as in the smaller fluid container 22b.
- Figure 4 shows a cross-section through the discharge system according to Figures 2 and 3 along the section axis A-A from Figure 3.
- the two cartridge pistons 1 close the open sides of the larger fluid container 22a and the smaller fluid container 22b.
- the two cartridge pistons 1 represent two embodiments, which are explained in detail below.
- FIGS 5 to 14 show different views of a first embodiment of a cartridge piston 1, as can be used in a larger fluid container 22a according to Figure 4. The same elements are provided with the same reference numbers in Figures 5 to 14.
- a sealing ring 14 is shown arranged separately.
- a first edge 6, a second edge 20 and a third edge 21 are arranged on the piston shaft 5. These edges serve to center and seal the cartridge piston in relation to an inner wall of a cartridge.
- the lower side of the piston base 2 in Figure 5 forms the media side, which comes into contact with the medium in the cartridge during intended use.
- a longitudinal axis of the cartridge piston 1 is also shown as a dashed line 17.
- the sealing ring 14 has a projection 18.
- Figure 6 shows a perspective view of the cartridge piston 1, with the media side 3 of the piston visible.
- Figure 11 shows a corresponding top view of the media side 3 of the cartridge piston 1.
- the media side 3 of the piston bottom 2 is closed by the first edge 6.
- the first edge 6 preferably has an edge 6a and surfaces 6b which slope down towards a center of the cartridge piston 1.
- On the piston bottom 2 are six ridges 7 are arranged, each of which has an edge 7a in its middle and surfaces 7b on both sides of this edge 7a, which slope down on both sides of the ridge 7.
- the six areas formed between two adjacent ridges 7 and the corresponding section of the first edge 6 form depressions opposite the ridges 7 and the first edge 6.
- the surface of these depressions is preferably convexly curved and slopes down in the direction of the first edge 6 of the cartridge piston 1.
- a groove 11 is preferably formed between this outwardly sloping surface and the respective surface 6b of the edge 6, which then rises again outwardly.
- An opening 10 is arranged in each of the grooves 11, preferably centrally between the ridges 7. This opening 10 connects the media side 3 to the actuation side 4 in a fluid-communicating manner.
- Figure 7 shows a further perspective view of the cartridge piston 1, whereby the "back side” or actuation side of the cartridge piston 1 is now visible compared to Figure 6.
- a first support wall 12 is arranged concentrically to a piston shaft 5, with a gap 13 being formed between the piston shaft 5 and the first support wall 12. This gap 13 is not visible in Figure 7 or in Figure 8, since the sealing ring 14 is completely inserted into this gap 13.
- a second support wall 17 is also arranged concentrically to the piston shaft 5, but with a smaller radius than the first support wall 12. The first support wall 12 is connected to the second support wall 17 by connecting webs 26.
- Grooves 19 are formed on the inside of the piston shaft 5 in a longitudinal direction of the cartridge piston 1.
- Figure 12 shows a cross-section along the line B-B through the cartridge piston 1 from Figure 11 .
- the section B-B is therefore made along an edge 7a of two ridges 7 which are arranged opposite one another in relation to the center of the cartridge piston 1.
- FIG. 12 shows a plan view of the actuating side of the cartridge piston according to Figs. 5 to 7.
- Figure 9 shows a further cross-section through the cartridge piston 1, but along the line A-A from Figure 8.
- the section A-A runs along two connecting webs 26, which are arranged on the actuation side 4 of the piston head 2. These are preferably arranged offset from the ridges 7 on the media side 3 of the piston head 2. This results in even better stiffening of the piston head 2. Accordingly, the section A-A runs across regions 8, which are each delimited by two ridges 7 and the first edge 6. In Figure 9 it can be seen that the regions 8 are recessed compared to the edges 7a of the ridges 7 and that the regions 8 also have a convex curvature.
- Figure 10 shows a detailed view from Figure 9
- Figure 13 shows a detailed view from Figure 12 of the respective cross sections of the cartridge piston 1.
- the sealing ring 14 is shown in a dismantled position, as in the underlying Figures 9 and 12.
- the detailed representations show the design of the gap 13, which is formed between the piston shaft 5 and the first support wall 12.
- This preferably has a first recess 15 and a second recess 16.
- These recesses 15, 16 are designed in such a way that they can interact with a projection 18 of the sealing ring 14. If the projection 18 of the sealing ring 14 engages in the first recess 15, the sealing ring is in an open position. In this position, air can escape from the recesses 8 in the piston head 2 through the openings 10 into the gap 13 and from the gap 13 via the grooves 19, past the sealing ring 14, into the environment.
- This opening position of the sealing ring 14 is therefore suitable when the cartridge piston 1 is inserted into the respective fluid container 22a, 22b (not shown) and is displaced in the direction of the filled medium so that the residual air in the fluid containers 22a, 22b can escape.
- the sealing ring 14 is preferably pressed further into the gap 13 so that the projection 18 interacts with the second recess 16. In this position, the sealing ring 14 is in the Closed position. The sealing ring 14 preferably closes the openings 10. Preferably, in this closed position, no more fluid can flow through the openings 10.
- Figure 14 shows a detailed view of an area E in Figure 11.
- the detailed view essentially shows an area 8 of the piston crown 2. This is delimited by ridges 7, each with edges 7a and side surfaces 7b, as well as the sloping surface 6b in the first edge 6.
- the area 8 forms a depression in relation to the ridges 7 and in relation to the first edge 6.
- a groove 11 is formed, which forms the deepest point of the depression.
- the opening 10, which connects the media side 3 with the actuation side 4 in a fluid-communicating manner, is preferably arranged in the middle of the groove.
- FIGS 15 to 25 show different views of a second embodiment of a cartridge piston 1, which is suitable for the smaller fluid container 22b of the cartridge 22 according to Figure 4.
- Elements of the cartridge piston 1 shown here, which correspond to elements of the first embodiment of a cartridge piston 1 according to Figures 5 to 14, are designated with the same reference numerals.
- the second embodiment of the cartridge piston 1 differs essentially in that the individual elements are more compact in the radial direction to the longitudinal axis of the cartridge piston 1 due to the reduced dimensions of the cartridge piston.
- Figures 15, 16 and 17 show three views of the cartridge piston 1, with the sealing ring 14 in the dismantled position.
- the cartridge piston 1 of the second embodiment has only a single, first support wall 12, which is designed as a pin.
- the gap 13 is formed between this pin 12 and the piston shaft 5.
- the cartridge piston 1 shown here also has a first edge 6 with an edge 6a and a sloping surface 6b as well as ridges 7 with an edge 7a and two sloping surfaces 7b each.
- the shape of a triangular prism is formed by the ridges 7.
- the sealing ring 14 has a projection 18.
- Figure 18 shows a perspective view according to Figure 17, wherein the sealing ring 14 is inserted into the gap 13 (not shown) and is thus in the closing position for closing the opening 10 (not shown).
- Figure 19 shows a plan view of the cartridge piston 1 in the configuration according to Figures 15, 16 and 17 with the installed sealing ring 14.
- Figure 20 shows a cross-sectional view along the line A-A in Figure 19.
- the projection 18 can in turn interact with a first recess 15 or a second recess 16, which define an opening position and a closing position of the sealing ring 14.
- both the projection 18 and the first recess 15 and the second recess 16 are preferably designed as circumferential elements.
- the piston bottom 2 of the cartridge piston 1 shown here also has a media side 3 and an actuation side 4.
- Figure 22 shows a plan view of the media side 3 of the piston crown 2.
- Figure 23 again shows a sectional view along the line B-B of Figure 22.
- section B-B runs along the edges 7a of two ridges 7, which are opposite each other in relation to the center of the cartridge piston 1. Accordingly, the contour of the edge 7a of the ridges 7 can be seen in Figure 23. In Figure 20, however, the section runs through two opposite openings 10, so that the contour of the depressions in the areas 8 (not shown) becomes visible here.
- Figures 21 and 24 each show a detailed view C from Figure 20 and a detailed view D from Figure 23.
- the recess in the area 8 can be clearly seen. Only a part of the gap 13 is visible, in particular the second recess 16.
- the contour of the edge 7a of the ridges 7 can be seen again.
- the second embodiment also has grooves 19 in the inner surface of the piston shaft 5, at least in the area of the first recess 15, in order to enable air to escape from the gap 13 into the environment in the opening position of the sealing ring, when its projection 18 interacts with the first recess 15 of the piston shaft 5.
- This groove 19 is only partially shown in Figure 23, however, since the majority of the first recess 15 is not shown in the view.
- Figure 25 shows a detail E from Figure 22.
- Figure 25 shows the course of the surface of the media side 3 of the piston base 2.
- the groove 11 does not run concentrically to the first edge 6 of the cartridge piston 1.
- Figure 25 also shows the first edge 6 with its edge 6a and the surface 6b sloping towards the recess.
- various ridges 7 are also visible in the respective edges 7a and the side surfaces 7b sloping from these.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU503254 | 2022-12-23 | ||
| PCT/EP2023/087021 WO2024133502A1 (de) | 2022-12-23 | 2023-12-20 | Kartuschenkolben |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4638021A1 true EP4638021A1 (de) | 2025-10-29 |
Family
ID=85036891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23837257.7A Pending EP4638021A1 (de) | 2022-12-23 | 2023-12-20 | Kartuschenkolben |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4638021A1 (de) |
| WO (1) | WO2024133502A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298036A (en) * | 1979-12-13 | 1981-11-03 | Plastic Research Products, Inc. | Dispenser for stick solids |
| DE29702551U1 (de) * | 1997-02-14 | 1997-03-27 | Prestele, Eugen, 86161 Augsburg | Verschlußvorrichtung |
| DE102006047289B4 (de) * | 2006-10-06 | 2008-09-04 | Sulzer Chemtech Ag | Kartuschenkolben |
| EP3597311A1 (de) * | 2018-07-16 | 2020-01-22 | fischerwerke GmbH & Co. KG | Kartusche mit kolben und entlüftungseinrichtung |
-
2023
- 2023-12-20 WO PCT/EP2023/087021 patent/WO2024133502A1/de not_active Ceased
- 2023-12-20 EP EP23837257.7A patent/EP4638021A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024133502A1 (de) | 2024-06-27 |
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