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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
  • B65D81/3216—Rigid containers disposed one within the other
  • B65D81/3222—Rigid containers disposed one within the other with additional means facilitating admixture
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
  • A61C5/62—Applicators, e.g. syringes or guns
  • A61C5/64—Applicators, e.g. syringes or guns for multi-component compositions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C9/00—Impression cups, i.e. impression trays; Impression methods
  • A61C9/0026—Syringes or guns for injecting impression material; Mixing impression material for immediate use
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
  • B01F33/50112—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held of the syringe or cartridge type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/713—Feed mechanisms comprising breaking packages or parts thereof, e.g. piercing or opening sealing elements between compartments or cartridges
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/713—Feed mechanisms comprising breaking packages or parts thereof, e.g. piercing or opening sealing elements between compartments or cartridges
  • B01F35/7138—Opening valves which close-off openings between compartments
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/716—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components
  • B01F35/7161—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components the containers being connected coaxially before contacting the contents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/716—Feed mechanisms characterised by the relative arrangement of the containers for feeding or mixing the components
  • B01F35/7162—A container being placed inside the other before contacting the contents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
  • B01F35/32—Driving arrangements
  • B01F35/32005—Type of drive
  • B01F35/3202—Hand driven

Definitions

• the invention relates to a device for the manufacture of a two-component mixture of the type specified by the preamble of claim 1.
• the devices of this type which have hitherto been available for the provision of a dental impression material are intended for single use only and are designed as disposable capsules.
• the filling space of the outer container is filled with a metered amount of an alginate powder and the inner container, which is usually airtightly sealed with an aluminum foil, is also filled with a metered amount of a special fluid which is used when the capsule is used can thereby be caused to flow out into the filling space of the powder, which, with the action of pressure on the capsule, causes a predetermined breaking point, which runs diametrically in the bottom of the inner container, for the creation of an outlet slot to burst.
• the capsule is shaken by means of a special vibrating device in order to obtain an intensive mixing of the two components for the preparation of the pasty impression material, which is then used using a special Extraction tool is applied by axially sliding the inner container over the bottom opening of the outer container onto an impression tray.
• a non-generic dispensing device for a fluid is known, which is filled into a cylindrical inner container which is provided with an outlet valve at a central bottom opening.
• the outlet valve is formed with a piston-shaped valve body provided with an outlet bore, which is formed on a coaxially arranged outer container and by one cylindrical wall part at the bottom opening of the inner container for an axial guidance and simultaneous occlusion of the outlet bore is surrounded.
• the outer container is connected at the end of the inner container facing away from the outlet valve via an aeration valve with its filling space for the fluid.
• the ventilation valve is formed with a piston-shaped valve body on the inner container and provided with a ventilation hole, which is surrounded by a cynical wall part for axial guidance and a possibility of closing the ventilation hole, which is formed at a central opening of a sealing cap of the outer container .
• a pushbutton pretensioned by a return spring is connected, by its actuation the ventilation valve and thus also the outlet valve in synchronism by axially displacing the inner container relative to the outer container against the force of the rest supported on the closure cap ⁇ spring can be opened.
• the invention characterized by the claims solves the problem ,, to design a device for producing a two-component mixture of the type specified so that its repeated use is possible after each refilling of the two filling spaces of the inner and outer container.
• the advantages that can be achieved with the device according to the invention can be seen primarily in the fact that by equipping the inner container with the outlet valve at a bottom outlet opening, a cost-effective procedure for reusability of the device is implemented.
• the integration of this outlet valve is made at the same time such that the two containers can be easily refilled with the two mixture components after each use of the device, with the device also being easy to disassemble. tion allows easy cleaning of their individual parts before each reuse of the device.
• the device shown schematically in the drawing can be designed practically in the same construction as these disposable capsules for a possible use for the provision of a dental impression material which in principle corresponds to the conventional disposable apple.
• the device is therefore formed with a cylindrical outer container 1 and a coaxially arranged inner container 2, which can be moved as a piston part along the outer container.
• the outer container 1 has an opening which is closed by a removable stopper 3 and which is formed centrally in a conical bottom 4 of the outer container.
• a bottom 5 of the inner container 2 has a conical shape which is complementary to this conical shape of the bottom 4 of the outer container and forms a thrust surface, the mediation of which, when the inner container is axially displaced against the bottom of the outer container, results in the two-component mixture forming the impression mass via the after Removing the plug 3 exposed bottom opening of the outer container can be expelled.
• the outer container 1 is provided when the device is used to provide a dental impression material for filling a metered amount of an alginate powder into a filling space 6.
• the filling space expediently has a filling level scale so that the filling quantity of the powder which is introduced into the outer container from above when the inner container 2 is removed can be determined accordingly precisely.
• the powder can also pass through the opening be introduced into the bottom 4 of the outer container 1.
• the inner container 2, is provided for filling a likewise metered quantity of a fluid, which in the simplest case can be tap water if its mixing with the alginate powder gives the consistency desired for the impression material.
• the inner container 2 has a bottom-side outlet opening 7 for the fluid filled in it.
• the Ausllumina ⁇ opening 7 is formed with the opening cross-section of a perforated guide cylinder 8 which extends in the axis of the inner container 2 between the bottom 5 and a ceiling 9 and which is provided for the axial guidance of a piston-shaped valve body 10 which is on the ceiling-side opening cross-section is insertable into the perforated guide cylinder.
• the valve body 10 is provided with an axial bore 11, which ends at its end facing the bottom outlet opening 7 of the inner container 2 in a piston part 12 of the valve body, with which an outlet valve for the inner container is provided.
• valve body 10 is also perforated, so that the axial bore 11 via the perforated guide cylinder 8 is in constant connection with the as the filling space for the fluid used interior of the inner container 2.
• the axial bore 11, which can be closed with a stopper 14, is therefore primarily a ventilation bore with respect to the inner container 2 and also with respect to the outer container 1 if the valve body 10 is arranged in the relative position shown in illustration A, while the Ventilation is only limited to the inner container 2 when the valve body 10 assumes the relative position shown in illustration B.
• the outlet valve of the inner container 2 formed with the piston part 12 in cooperation with the surrounding wall part of the perforated guide cylinder 8 is closed, so that when the plug 14 is removed, it is correspondingly closed the drop representation 15 of the inner container 2 can be filled with tap water.
• This filling of the inner container 2 with tap water is preceded by a filling of the outer container 1 with the alginate powder, it being possible to deduce from the illustration A that for easier insertion of the inner container 2 into the outer container 1 after the completion of this filling the outlet valve formed Kol ⁇ benteil 12 is opened useful to allow flow out to the sen instructer wherein advancing the 'inner container from the off displaced air to the outside.
• a ventilation valve formed with the piston part 13 of the valve body 10 in cooperation with the surrounding wall of the perforated guide cylinder 8 is opened.
• the representation C shows the device when the outer container 1 is filled with a ready-to-use amount of the powder and the inner container 2 is filled with a ready-to-use amount of the tap water. Because the bottom opening of the outer container with the stopper 3 and the bottom opening of the inner container 2 are closed with the piston part 12 of the valve body, which at the other end is closed with the stopper 14, it is possible to use the device for one Possibility of use at any desired time with regard to the provision of an impression mass obtained by mixing these two components.
• the outlet valve of the inner container 2 formed with the piston part 12 is first opened by pulling out the valve body 10 in order to fill the inner container Let water flow into the filling space of the outer container 1.
• the outlet valve formed with the piston part 12 is then closed again, it being possible to deduce from the individual representations B and C that in this closed position of the outlet valve the thrust surface formed with the bottom 5 of the inner container 2 is at its outlet - Opening 7 interrupted portion is then supplemented by the end face of the piston part 12.
• the device can then be arranged in a vibrating device in accordance with the practice practiced with the conventional disposable capsules, so that the powder and the water are mixed intensively with one another and the consistency desired for the impression material is obtained.
• the stopper 3 is removed from the outer container 1 of the device then removed again from the vibrating device, in order then, in accordance with conventional practice, the impression material 16 is then removed with a pressing tool 17 to be able to express on a ready impression tray.
• the inner container 2 is axially displaced against the bottom 4 of the outer container 1, its bottom forming the relevant thrust surface supplemented with the outlet valve.
• the illustration E shows that the axial displacement of the inner container 2 is ended as soon as the thrust surface comes into contact with the bottom 4 of the outer container 1, the complementary conical shape ensuring that the entire impression mass is displaced from the outer container is.
• the inner container 2 can be pressed into a relative position spaced apart from the base 4 thereof by means of a stamping tool 18 which is axially inserted via the bottom opening of the outer container 1.
• the inner container 2 can therefore also be completely removed from the outer container by means of this stamping tool 18 be pressed out so that the outer container can be easily cleaned for repeated filling with the powder.
• This simple cleaning possibility is also provided for the inner container 2 and the valve body 10, it being possible to indicate that the disassembly required for this cleaning possibility of all individual parts of the device can be carried out just as easily as, conversely, the subsequent assembly thereof, with which the device can then be reused.
• the provision of the perforated guide cylinder 8 can be dispensed with entirely and instead only provided, with the two piston parts 12 and 13 of the valve body 10 in cooperation with a respective wall part of its bottom opening and an upper ventilation opening, corresponding outlet and ventilation valves to build.
• the ventilation valve is not a feature necessary for the device, since it can alternatively also be provided to provide a fill opening in the cover 9 of the inner container 2 which can be closed with a stopper and which can then also take over the function of a ventilation opening.
• a return spring which biases the outlet valve formed with its piston part 12 into a closed position can also be provided, which is supported, for example, on the base 5 or also on the cover 9 if the valve body 10 also deviates from the front ⁇ described embodiment for opening the outlet valve is not pressed upwards but downwards in order to expose its piston part 12 with respect to a surrounding wall part which projects axially over the thrust surface of the inner container. If such a projecting arrangement of a wall part is realized, then it should also the bottom-side outlet opening of the outer container is provided with a guide cylinder, with which an axial guidance of the wall part is then possible during the last phase of the axial displacement of the inner container against the bottom of the outer container.
• O-rings can of course also be provided for a seal with respect to the surrounding wall part.
• Other sealing options are also conceivable.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6327277

Family Applications (1)

Country Status (2)

Cited By (2)

Families Citing this family (1)

Citations (3)

Family Cites Families (2)

• 1987
  • 1987-05-11 DE DE19873715682 patent/DE3715682A1/de active Granted
• 1988
  • 1988-11-11 WO PCT/EP1988/001024 patent/WO1990004952A1/de unknown

Patent Citations (3)

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