US20050011166A1 - Machine for vacuum packing products in plastic bags or rigid containers - Google Patents
Machine for vacuum packing products in plastic bags or rigid containers Download PDFInfo
- Publication number
- US20050011166A1 US20050011166A1 US10/481,163 US48116304A US2005011166A1 US 20050011166 A1 US20050011166 A1 US 20050011166A1 US 48116304 A US48116304 A US 48116304A US 2005011166 A1 US2005011166 A1 US 2005011166A1
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- US
- United States
- Prior art keywords
- chamber
- vacuum
- machine according
- bag
- machine
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
- B65B31/046—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper
- B65B31/047—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper the nozzles co-operating with a check valve in the opening of the container or wrapper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
- B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags
Definitions
- Said devices comprise a shell consisting of a portable handgrip inside which is housed a suction pump driven by a motor through a reduction unit.
- a suction pump driven by a motor through a reduction unit.
- FIG. 9 is an axonometric exploded view of a pump for creating vacuum of the machine, according to the invention.
- Rotation of the cam 16 also causes shifting of the air valve 13 . Following this shifting the air valve 13 opens the opening 48 formed in the seat 2 B of the base body 2 which separates the housing 7 from the chamber 4 .
Abstract
A machine (1) for vacuum packing in plastic bags and rigid containers (37) comprising:—an airtight chamber (4), suited to accommodate a plastic bag (26) with the relative product (27),—means for sucking air from said chamber (4), so as to create a vacuum in the chamber and in the bag (26) contained therein,—means for sealing the edges (25) of the bag (6) after the vacuum has been created therein,—air input means (13) for introducing air into the chamber (4) to remove the vacuum,—a suction device (35), connected to the suction means, for creating vacuum in rigid containers (37) provided with a valve (39).
Description
- The present invention refers to a machine for vacuum packing products in plastic bags and rigid containers, particularly for preserving foodstuffs and perishable materials in general under vacuum.
- As is known, almost all foodstuffs, whether they be solid, semi-solid or liquid, tend to deteriorate rapidly when they are in contact with air, following aggression of the components contained therein, particularly oxygen.
- “Oxidation” of foodstuffs can be avoided by resorting to vacuum storage thereof.
- Although suction devices for creating vacuum in containers exist, this method of preserving foodstuffs is not very widespread among domestic consumers because of the drawbacks of the suction system, which will now be briefly illustrated.
- First of all, known suction devices are very expensive, bulky and heavy, so they must form fixed installations, at least during use. These apparatus are in fact fixed to the wall or disposed on a flat surface and are connected to the valve of the container in which the vacuum is to be created by means of a flexible tube. As far as the inside structure of said apparatus is concerned, they have: either an electric motor, on the output shaft of which is a cam which directly drives the piston of a suction pump or types of rotary blade pumps. Both solutions require a rather high power and therefore over-sizing of the entire device.
- These problems of size and cost are solved by known devices for the creation of vacuum in rigid containers. Said devices comprise a shell consisting of a portable handgrip inside which is housed a suction pump driven by a motor through a reduction unit. The extreme miniaturization of the motor and suction pump assembly leads to unsatisfactory results and an excessively long time for creation of vacuum.
- The same type of device is used for the creation of a vacuum in plastic bags. In this case, after having cut a plastic bag and filled it with the material to be vacuum packed, the end edges of the bag are closed in a special machine to which a device for creating a vacuum is applied. Consequently this machine also gives unsatisfactory results and takes a long time to create a vacuum.
- Moreover, the method for creating a vacuum in plastic bags by suction, requires that at least one of the walls of the bag be made with an embossed film, so that when the open edge of the bag is closed in the suction chamber of the machine, between two opposite gaskets, there is not a complete seal between the inner surfaces of the bag walls, which would prevent air suction, but rather channels are created though-which air can leave the bag.
- Furthermore embossing is a process which, besides stiffening the sheet material and thus making it less suitable for the purpose, increases the final costs of packaging.
- The object of the present invention is to provide a machine for vacuum packing in plastic bags and rigid containers, which ensures high performance and short times for creation of vacuum and which at the same time occupies little space, is cheap, practical and simple to make.
- This object is achieved in accordance with the invention with the characteristics listed in appended
independent claim 1. - Advantageous embodiments of the invention are apparent from the dependent claims.
- The machine for vacuum packing in plastic bags and rigid containers according to the invention has a box-type shell consisting of a base and a cover forming a chamber in which a bag in which a vacuum is to be created is placed. A seating to accommodate a suction pump for creation of the vacuum, driven by a motor, is provided in the walls of said box.
- Said pump is connected by means of a flexible tube to a device in the form of a handgrip, positioned in a seat on the outside of the box-type shell. Said device has a suction nozzle which can be inserted in a valve provided in the outer wall of the box-type shell and communicating with the inner chamber thereof.
- In this manner, when the suction pump is operated, a vacuum is created in said chamber and consequently also in the bag contained therein. Once the air contained inside the chamber and consequently inside the bag has been evacuated, that is when the desired level of vacuum has been reached, a slide is operated by means of a cam which pushes the resistance bar upward for heat sealing of the edges of the bag.
- Simultaneously with the movement of the slide, the cam actuates opening of an air valve which introduces air from the outside into the vacuum chamber. The chamber is thus brought to atmospheric pressure to allow subsequent opening of the cover by the user. The heat seal previously carried out on the edges of the bag prevents the outside air from re-entering the bag, and thus the pressure difference that has been created between the inside of the bag and the outside atmosphere causes flattening or shrinkage of the bag around its contents.
- The handgrip device can be extracted from its seat and the suction nozzle can be fitted into the valve of rigid containers in which a vacuum must be created.
- It must be considered that the entire structure of the machine according to the invention is made of thermoplastic resin, with the consequent advantage of being extremely light and cheap.
- Moreover, the fact that a special housing is provided for the motor and the suction pump for creation of vacuum has enabled the reduction units of the motor to be developed in an optimal manner to exploit greater power, which makes it possible to achieve satisfactory conditions and short times to reach a vacuum, without thereby increasing wear on the structural parts of the suction pump.
- Moreover, the fact that the bag is housed in an inner chamber of the machine in which vacuum is created, makes it possible to use any type of bag, even without embossing. In fact the bag which is contained inside the chamber of the machine is emptied of air from its mouth, irrespective of the configuration of the sheet material from which it is made.
- Another advantage of the machine according to the invention is that it can be used indifferently to create a vacuum both in plastic bags and in rigid containers.
- Further characteristics of the invention will be made clearer by the detailed description that follows, referring to a purely exemplary and therefore non-limiting embodiment, illustrated in the appended drawings, in which:
-
FIG. 1 is an axonometric exploded view of the machine for vacuum packing in plastic bags and rigid containers according to the invention; -
FIG. 2 is a longitudinal sectional view of the machine inFIG. 1 assembled, showing a bag therein with material to be vacuum packed; -
FIG. 2 a is an enlarged sectional view of the detail enclosed in the circle a ofFIG. 2 ; -
FIG. 3 is a cross sectional view along sectional plane III-III ofFIG. 2 ; -
FIG. 4 is an axonometric view of the machine according to the invention shown assembled and open, during creation of a vacuum in a rigid container; -
FIG. 5 is an axonometric exploded view of the components making up the heat sealing device for bags forming part of the machine according to the invention; -
FIG. 6 is a broken off sectional view taken in the longitudinal direction of the machine and illustrating the heat welding device ofFIG. 5 assembled; -
FIG. 7 is a cross sectional view of the heat welding device along sectional plane VII-VII ofFIG. 6 ; -
FIG. 8 is an enlarged longitudinal sectional view of apart of the machine according to the invention, schematically illustrating the air flow during the work cycle of the machine; -
FIG. 9 is an axonometric exploded view of a pump for creating vacuum of the machine, according to the invention; -
FIG. 10 is a sectional view of the pump for the creation of vacuum shown inFIG. 9 . - With reference to said figures, a machine according to the invention has been indicated as a whole with
reference numeral 1. It essentially comprises abase body 2 and acover 3 which can be raised by rotation around a rear hinge axis. - As shown in
FIGS. 1 and 2 , aninner wall 2A of thebase body 2 defines achamber 4 wherein is housed abag 26 having thematerial 27 to be vacuum packed inside it. - The
chamber 4 is tightly closed when thecover 3 is in the lowered position. Thecover 3 presses on aspecial gasket 5 housed in a seat in the upper part of the base orbasic body 2. As shown inFIG. 2 a, thegasket 5 is made in a loop with a lip-shaped section to compensate for errors in planarity of thecover 3 and of the upper part of thebasic body 2, due to assembly tolerances. - A housing 7, separate from the
chamber 4, is provided in the front part of thebasic body 2. The following elements are located in the housing 7: -
- an
electrical transformer 10 to transform the electrical current coming from the power supply into an electrical current able to supply the electrical devices of the machine; - a
suction pump 33 operated by a relative drive motor M to create vacuum; - a
tube winding device 12 consisting of a spring-loaded reel to wind atube 36 connected respectively to thesuction pump 33 and to adevice 35 in the form of a handgrip for creating the vacuum; - a geared
motor 8 to operate a device for heat sealing theedges 25 of thebag 26 to be vacuum packed.
- an
- As shown in
FIGS. 5-7 , the gearedmotor 8 rotates acam 16 positioned in aseat 2B in the upper part of thebasic body 2. Thecam 16 is insulated from thechamber 4 by means of anairtight gasket 6, mounted around the shaft of the gearedmotor 8. - The
cam 16 has a vertical pin 11 that acts in a transverse recess 9 (directed in the longitudinal direction of the machine) of aslide 18. In this manner rotation of thecam 16 causes a translation of theslide 18 with a reciprocating movement obligatorily in the direction x ofFIG. 5 . - A
resistance holding bar 19 free to slide vertically is mounted on theslide 18. For this purpose theresistance holding bar 19 has twovertical pins 17 which can slide vertically insiderespective bushings 20 formed in theseat 2B. - Two horizontally disposed pins 46 are mounted on the
slide 18 and engage in respective slots 30, with a cam profile, formed in theresistance holding bar 19. The slots 30 generate an obligatory course for the horizontal pins 46 of theslide 18. In this manner the horizontal translating movement of the pins 46 integral with theslide 18 cause a vertical translating movement of theresistance holding bar 19 in the direction z inFIG. 5 . - An
electrical resistance 28 kept taught by means of clips 31 disposed at the outer sides of the resistance holding bar is mounted on theresistance holding bar 19. Springs 32 disposed in special seats inside theresistance holding bar 19 press on the clips 31. - The
bushings 20, besides acting as guides, conduct low-voltage current to theelectrical resistance 28 which extends for the entire length of theresistance holding bar 19. When the electrical current passes through theelectrical resistance 28, the resistance overheats, reaching an optimal temperature to cause heat sealing of the edges of bags made of heat-weldable plastic material. - Rotation of the
cam 16 causes horizontal translation of theslide 18 and thus raising of theresistance holding bar 19, which is pushed against a metal bar orcounter-bar 22. Themetal bar 22 is locked in abridge structure 21 integral with thebasic body 2. Thebridge structure 21 packs the entire heat welding system to thebasic body 2. - The
metal bar 22 is situated at a short distance above theresistance holding bar 19. Themetal bar 22 is coated with asoft coating 23, for example silicone rubber, which ensures an adequate resistance at the high temperatures reached by theresistance 28 on theresistance holding bar 19. Saidcoating 23 allows any errors of planarity between the twoedges 25 of thebag 26 which must be welded to be compensated for. - As shown in
FIGS. 6 and 8 , thecam 16 situated in theseat 2B of the upper part of thebase body 2 has the task, at the end of the welding cycle, of operating anair valve 13 for input of air from the outside into thechamber 4. The air valve shutter in fact obstructs an opening communicating with thechamber 4. Moreover, theair valve 13 operates a switch 15 (FIG. 7 ) which controls the start and end of the work cycle of the machine. - As shown in
FIGS. 1 and 4 , in the upper part of the housing 7 aseat 34 is formed which receives adevice 35, in the shape of a handgrip, connected by means of asmall tube 36 to asuction outlet 69 of thepump 33. Thesmall tube 36 is wound by means of thetube winding device 12. - As shown in
FIG. 4 vacuum can be created in rigid or substantiallyrigid containers 37 by means of thedevice 35′ by positioning thesuction nozzle 38 thereof on thevalve 39 of thecontainer lid 37. - As shown in
FIG. 2 , aconnector 40 accessible from the outside and communicating with thechamber 4 is provided in theseat 34. To be precise, theconnector 40 is connected to atube 41 which passes through the housing 7 and ends in anopening 42 formed in theseat 2B and communicating with thechamber 4. In this manner, when thenozzle 38 of thedevice 35 is engaged in theconnector 40, a vacuum can be created in thechamber 4. - As an alternative to the
connector 40, a flow deflector which switches thesuction output 69 of thepump 33 between thetube 36 directed to thedevice 35 and thetube 41 directed to theopening 42 of thechamber 4 can be provided. In this manner, to create a vacuum in thechamber 4, use of thehandgrip device 35 and thetube winder 12 is avoided. - As shown in
FIG. 4 , in the front part of thebasic body 2, next to theseat 43, amulti-position selector switch 44 that can be operated by the user to select the level of vacuum desired is provided. Theswitch 44 acts on a manostat 45 (FIG. 1 ) able to maintain the pressure, or rather the vacuum, in thechamber 4 at the level selected by the user. - As shown in
FIG. 2 , downstream of heat welding, astop 47 is provided on the basic body which acts as a reference for correct positioning of the end edges 25 of thebag 26. - As shown in
FIG. 4 , switches 29 sensitive to lowering of thecover 3 are provided in thebase body 2, below thecover 3. Said switches send a control signal to enable start-up of thesuction pump 33. - In the case of use of the
handgrip 35 to create a vacuum inrigid containers 37, the suction pump start-up control is provided with a switch 43 (FIGS. 2 and 4 ) situated beneath theseat 34. Thisswitch 43, when freed by thehandgrip 35, gives out an electrical signal toward thepump 33 to set it in operation. In this manner, to control operation of thesuction pump 33, it is not necessary to act on thecover 3 to activate the pump start-up switches 29. - Operation of the
machine 1 according to the invention will now be described. - First of all, the
bag 26 is filled with the material 27 to be vacuum packed. Thecover 3 is then opened and thebag 26 is positioned in thechamber 4. - The end edges 25 of the
bag 26 must be situated in the gap between theresistance bar 19 and thecoating 23 of themetal bar 22. To ensure correct positioning of the edges of the bag, these edges are placed up against thestop 47. - The desired level of vacuum is selected by means of the
multi-position switch 44. - Ensuring that the
nozzle 38 of thedevice 35 is situated in theconnector 40, the cover 30 is closed to operate thepump 33. That is to say that by pressing thecover 3 for some seconds, theswitch 29 start-up suction of thepump 33. The air is sucked from thechamber 4 and from thebag 26 and, following the arrows F1 and F2 (FIG. 8 ), exits through theopening 42. Consequently a vacuum is created in thechamber 4 and in thebag 26. - When a satisfactory level of vacuum has been reached, a control signal is sent to the geared
motor 8 which rotates thecam 16 which in turn makes theslide 18 to translate horizontally. During the stroke of theslide 18, the twopins 17 thereof, following the cam slots 30 of theresistance holding bar 19 cause raising of theresistance holding bar 19. - The
resistance holding bar 19 presses against themetal bar 22 and itscoating 23, squeezing the twoedges 25 of thebag 26. Theresistance 28 of theresistance bar 19 causes heating of theedges 25 of thebag 26 and thus heat welding thereof. - Rotation of the
cam 16 also causes shifting of theair valve 13. Following this shifting theair valve 13 opens theopening 48 formed in theseat 2B of thebase body 2 which separates the housing 7 from thechamber 4. - Consequently, air is let into the
chamber 4 from theair valve 13, in the direction of the arrows F3. This air let into thechamber 4 causes pressure on the outer surface of thebag 26, allowing the inner surfaces of the walls of thebag 26 to adhere to each other. Moreover the air let into thechamber 4 by theair valve 13 re-establishes the atmospheric pressure in thechamber 4 and thus allows the user to raise thecover 3 when the process of sealing the edges of the bag has been completed. - Said process will be completed when the
cam 16, on turning, gives impulse to theswitch 15, which causes the start and end of the cycle. - At this point the user can open the
cover 3 and remove the package ready for storage. - With reference to
FIGS. 9 and 10 , a possible suction pump for use in themachine 1 according to the invention will now be described. - As can be seen in the figures, the
pump 33 comprises twopistons cylindrical chambers - The two
pistons rods respective cans common shaft 59. Theshaft 59 carries afirst gear wheel 60 meshing with asecond gear wheel 61 with a smaller diameter, carried by asecond shaft 62. Thesecond shaft 62 carries athird gear wheel 63 with a larger diameter than thesecond gear wheel 61. Thethird gear wheel 63 meshes with apinion 64 splined to thedrive shaft 65 of the motor M. - The suction holes 67 and 68 of the two
cylinders duct 69 which is put into communication with thesuction device 35 by means of thetube 36. The exhaust holes 70 and 71 of the twocylinders FIG. 9 ). - Alternatively, the
suction duct 69 can be connected directly to thechamber 4 in which the vacuum has to be created. In this case a flow switch which can divert the output of thesuction duct 69 toward thetube 36 when thedevice 35 is to be used to create a vacuum in rigid containers will be provided. - The inside and outside walls of the
basic body 2 and of thecover 3 of themachine 1 are preferably made of moulded thermoplastic resins. Special studies on the structural configuration of the parts of themachine 1 have made it possible to use plastic as the material, despite thechamber 4 of themachine 1 being subject to high vacuums during creation of the vacuum. - The use of plastic has allowed a considerable saving on the materials and on the production process of the parts of the
machine 1. Moreover themachine 1 is extremely light and easy to transport, therefore particularly suitable for domestic use. - Numerous changes and modifications of detail known to a person skilled in the art can be made to the present embodiment of the invention, without departing from the scope of the invention set forth in the appended claims.
Claims (15)
1. A machine for vacuum packing products in plastic bags and rigid containers comprising:
an airtight chamber, suited to receive a plastic bag with the relative product,
sucking means for sucking air from said chamber, so as to create a vacuum inside said chamber and said bag contained therein;
sealing means for sealing the edges of the bag after a vacuum has been created therein,
air input means able to introduce air into said chamber to remove the vacuum,
a suction device connected to said suction means, for creation of a vacuum in rigid containers provided with a valve.
2. A machine according to claim 1 , characterized in that said chamber is formed in a basic body or base of the machine and is closed by a cover, sealing means able to ensure an airtight seal being provided between the base and the cover.
3. A machine according to claim 2 , characterized in that said sealing means comprise a gasket made in a single piece, with a lip-shaped cross-section to compensate for errors in planarity between the cover and the base body.
4. A machine according to claim 1 , characterized in that said suction device is connected to said sucking means by a flexible tube, to create a vacuum in said chamber.
5. A machine according to claim 4 , characterized in that said flexible tube is wound on a spring-loaded tube-winding device disposed inside a housing separated from said chamber in which the vacuum is created.
6. A machine according to claim 4 , characterized in that said suction device is housed in a seat of said machine in which a connector communicating with said chamber is provided.
7. A machine according to claim 1 , characterized in that said sucking means for sucking air from said chamber comprise a pump, operated by a motor, which pump by means of said suction device sucks air from said chamber through at least one opening made in said chamber.
8. A machine according to claim 7 , characterized in that said pump comprises two piston-cylinder assemblies working in push-pull fashion.
9. A machine according to claim 7 , characterized in that interposed between the motor and the pump is a reduction unit comprising a pinion splined to the shaft of the motor which meshes with a first gear wheel mounted on a first shaft on which is mounted a second gear wheel which meshes with a third gear wheel mounted on a second shaft which carries two cams for movement of the connecting rods of the pistons.
10. A machine according to claim 1 , characterized in that said means for sealing the free edge of the bag comprise a welding bar extending in crosswise direction of the edge of the bag and means for moving said welding bar able to move it with a reciprocating movement to press the edges of said bag against a counter bar, so as to achieve heat welding of the edges of the bag.
11. A machine according to claim 10 , characterized in that said welding bar comprises an electrical resistance and is mounted so as to be able to slide vertically on the basic body by means of vertical pins which engage in respective bushings formed in the basic body, said pins providing the supply contacts of the electrical resistance.
12. A machine according to claim 10 , characterized in that said counter bar is mounted on a bridge structure integral with the base body.
13. A machine according to claim 10 , characterized in that said means for moving said welding bar comprise a geared motor which rotates a cam comprising a vertical pin which engages in a transverse recess of a slide which provides at least one horizontal pin that engages in at least one cam slot formed on said welding bar.
14. A machine according to claim 13 , characterized in that said air input means comprise an air valve operated by said means for moving the welding bar and mounted in a wall of the basic body to introduce air into said chamber from the outside.
15. A machine according to claim 1 , characterized in that said basic body and said cover are made of plastic material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2001MI000270A ITMI20010270A1 (en) | 2001-02-09 | 2001-02-09 | MACHINE FOR VACUUM PACKAGING IN PLASTIC BAGS AND RIGID CONTAINERS |
ITMI2001A000270 | 2001-02-09 | ||
PCT/EP2001/011678 WO2002064429A1 (en) | 2001-02-09 | 2001-10-09 | Machine for vacuum packing products in plastic bags or rigid containers |
Publications (1)
Publication Number | Publication Date |
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US20050011166A1 true US20050011166A1 (en) | 2005-01-20 |
Family
ID=11446827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/481,163 Abandoned US20050011166A1 (en) | 2001-02-09 | 2001-10-09 | Machine for vacuum packing products in plastic bags or rigid containers |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050011166A1 (en) |
EP (1) | EP1358109B1 (en) |
AT (1) | ATE300474T1 (en) |
DE (1) | DE60112329T2 (en) |
ES (1) | ES2247012T3 (en) |
IT (1) | ITMI20010270A1 (en) |
WO (1) | WO2002064429A1 (en) |
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US20040065051A1 (en) * | 2002-10-04 | 2004-04-08 | Patterson Justin C. | Appliance for vacuum sealing food containers |
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US20050044814A1 (en) * | 2002-10-04 | 2005-03-03 | Patterson Justin C. | Appliance for vacuum sealing food containers |
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Also Published As
Publication number | Publication date |
---|---|
ES2247012T3 (en) | 2006-03-01 |
ATE300474T1 (en) | 2005-08-15 |
EP1358109B1 (en) | 2005-07-27 |
EP1358109A1 (en) | 2003-11-05 |
DE60112329T2 (en) | 2006-04-20 |
ITMI20010270A1 (en) | 2002-08-09 |
WO2002064429A1 (en) | 2002-08-22 |
DE60112329D1 (en) | 2005-09-01 |
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Legal Events
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