US20060283360A1 - Sling jig assembly for use in loading and transporting bagged and bundled products - Google Patents
Sling jig assembly for use in loading and transporting bagged and bundled products Download PDFInfo
- Publication number
- US20060283360A1 US20060283360A1 US11/424,496 US42449606A US2006283360A1 US 20060283360 A1 US20060283360 A1 US 20060283360A1 US 42449606 A US42449606 A US 42449606A US 2006283360 A1 US2006283360 A1 US 2006283360A1
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- Prior art keywords
- sling
- sidewalls
- jig
- central platform
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- Prior art date
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- Abandoned
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- 238000000034 method Methods 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000012636 effector Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims 1
- 239000004677 Nylon Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/226—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks for flexible intermediate bulk containers [FIBC]
Definitions
- This invention relates generally to containment systems and more particularly to methods and apparatuses for facilitating the loading operation of a sling device for use with transporting bagged or bundled goods.
- Granulated products such as seed, fertilizer, grains, and the like are typically contained in nylon, cotton, burlap or plastic bags.
- the individual bags When transporting mass quantities of such bags, the individual bags are stacked on pallets and lifted from below by forklift from place to place.
- When such products are shipped for export on a vessel, however, it is more common to stack such bags 100 within a soft-sided sling as shown in FIG. 1 .
- Such a sling would fully envelop bags 100 , thereby preventing them from sliding from the stack when moved.
- the sling includes a soft-sided outer bag 10 having a bottom 11 and sidewalls 13 , conventionally formed from a strong fabric such as nylon. Surrounding the bag 10 are a web of support straps, such as support straps.
- the particular sling embodiment shown in FIG. 1 includes two straps on each vertical sidewall 13 of the sling bag 10 , such as straps 12 a , 12 b along a facing sidewall of the bag and straps 12 c and 12 d along left and right sidewalls respectively.
- Strap guides 14 a - 14 d receive straps 12 a - 12 d , respectively, and wrap around the periphery of and especially underneath the bag 10 .
- the straps 12 a through 12 d connect together over the top of bag 10 so that forklift forks 16 a , 16 b can be received within the gap 18 formed beneath the straps.
- the traditional method for loading bags 100 within the sling is by hand.
- the sling is laid flat on a floor and workers would lift each bag or bundle from an unload point and place them within the sling.
- a forklift or overhead crane would lift the loaded sling by straps 12 a - 12 d thereby causing the straps to cinch the sling closed.
- the act of individually moving bags to within the sling interior is extremely time intensive.
- the apparatus uses a robotic arm to pick and place individual bags of material as they present themselves at the pick-up position on an in-feed conveyor belt.
- the bags are placed on an inside, bottom surface of a sling bag whose sidewalls have been rolled down.
- the sling bag sits atop a sling jig assembly that includes a raised central platform on which the sling bottom sits, and a gutter surrounding the platform into which the sling sidewalls are rolled down into.
- the jig further has an underside support structure that is adapted to sit on a conveyor belt.
- the jig is fitted with a sling by placing the sling bottom on the raised jig platform and rolling the sling sidewalls down into the gutter.
- the jig is placed on a load conveyor and rolled into place in a load position adjacent the robotic arm.
- the robotic arm moves individual bags from the pickup position to the load position and places the bags in preprogrammed orientations on the sling bottom and jig platform.
- the sling sidewalls are rolled upward over the sides of the stack of bags and attached together at the top of the stack to form an enclosed bag.
- the loaded jig is then moved by the conveyor to an unload position where a forklift or rods of an overhead crane are passed through lifting straps on the sling.
- the sling is then lifted from the jig and moved to its stored position in a warehouse for future loading onto a ship (e.g. the hold of a cargo ship).
- the jig is then fitted with another sling and then moved via the load conveyor back to the load position where the load and unload steps are again performed.
- FIG. 1 is a side elevation view of a sling loaded with bagged product.
- FIG. 2 is a perspective view of a sling jig assembly constructed according to a preferred embodiment of the invention.
- FIG. 3 is a plan view of the sling jig assembly of FIG. 2 .
- FIG. 4 is a side elevation view of the sling jig assembly of FIG. 2 shown along a long side of the jig.
- FIG. 5 is a side elevation view of the sling jig assembly of FIG. 2 shown along a short side of the jig.
- FIG. 6 is a perspective view of a load/unload assembly environment in which the sling jig assembly of FIG. 2 is used.
- FIG. 7 is a sectioned view of the sling jig, taken along lines 7 - 7 of FIG. 3 with a sling bag mounted therein and product unloaded thereon.
- FIG. 2 shows a preferred embodiment of a sling jig assembly at 20 in perspective view.
- FIGS. 3-5 show top, front, and side views respectively.
- Jig 20 is constructed to include an outer rectangular skirt 22 in which the four peripheral edges of skirt 22 are bent upward to form the flanges 24 a - 24 d .
- Flanges 24 a - 24 d are coupled together to adjacent flanges using metal ties, for instance metal tie 26 coupling flange 24 b to flange 24 c in FIG. 2 and coupling flange 24 a and 24 b in FIG. 3 .
- the metal ties are affixed to the flanges via a set of bolts 27 .
- a raised platform 28 is placed on top of skirt 22 and between flanges 24 a - 24 d .
- Platform 28 includes sidewalls 30 defining a rectangular periphery of platform 28 and having a raised platform top surface 32 that projects above a bottom surface formed within skirt 22 .
- the sidewalls 30 of the raised platform 28 and the flanges 24 a - 24 d of the skirt 22 form a trough or gutter 33 therebetween that runs about the periphery of raised platform 32 .
- a preferred embodiment of the jig 20 includes an array of apertures 34 formed through top surface 32 to allow air to escape as the sling is placed on the jig.
- Metal support struts 35 (shown in dashed lines in FIG. 3 ) are fixed beneath top surface 32 to increase the strength of the jig assembly.
- a support structure affixed to an underside of the jig comprises sets of support beams 38 and 36 running perpendicular to one another. Beams 38 , positioned on each side of beams 36 to form a box therewith, extend below a bottom surface of beams 36 and are adapted to contact and sit on a conveyor, such as load conveyor 52 shown in FIG. 6 . At set of spaced apertures 39 are formed through beams 38 to act as forklift pockets for side access and lifting of jig 20 by forklift means 56 .
- a sling 10 is positioned within the jig 20 so that the sling bottom 11 and portions of the straps 12 sit atop the jig raised platform 28 .
- the sling sidewalls 13 are then rolled down into the gutter 33 surrounding the raised platform 28 so that the sling sidewalls 13 make a negative angle (that is, angling downward) from the sling bottom 11 .
- the sling bag is almost inside out.
- Bagged products 100 are then placed atop the sling bottom 11 with the sidewalls 13 rolled out of the way and not interfering with placement of the bagged product within the sling.
- the sling sidewalls 13 are rolled up over the sides of the stacked product and enclose the stack.
- the straps 12 of the sling are then coupled together to allow a forklift or overhead crane to move the loaded sling to another location.
- FIG. 6 is a plan view of a load/unload assembly environment in which the sling jig assembly of FIG. 2 is used.
- the environment includes an in-feed conveyor 40 for transporting bagged products 100 serially to an unload position 42 .
- a robotic arm 44 having an end effector or load/unload head 46 attached to a base 48 through a series of pivoted arms, engages with a bagged product at the unload position 42 whereby the load/unload head 46 of the robotic arm clamps on, thereby engaging bagged product 100 .
- the engaged bag is then moved to a load position within the sling 10 mounted on the sling jig 20 .
- Logic controls within the robotic arm are programmed to move between unload and load positions, with the load position changing with each successive pickup and placement depending upon where the next bagged product is to be placed on the stack.
- the sling bag 10 can be rolled up over the stack as described above to form a wrapped bundle 50 .
- the sling jig 20 and bundle 50 are then moved by load conveyor 52 for transport to an unload position 54 .
- the loaded sling bag 10 is lifted from the jig 20 and moved for further transport, as via engagement of the tines 16 a , 16 b of forklift 56 shown in FIG. 6 with the straps 12 passing over the bundle 50 to create a webbing, to a subsequent shipping position 60 .
- the unloaded jig 20 is then moved back into place at the load position, or a new jig put in its place to receive further bagged product from the in-feed conveyor 40 via robotic arm 44 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stacking Of Articles And Auxiliary Devices (AREA)
Abstract
A method for loading a sling having a bottom and sidewalls comprises placing the sling bottom on a raised platform and rolling the sidewalls down into a gutter surrounding the raised platform so that the sidewalls form a negative angle with the sling bottom. Bagged product is then loaded onto the bottom of the sling to form a stack. The sling sidewalls are then rolled up the sidewalls up the stack sides so that the sidewalls form a positive angle with the sling bottom and the sling now encloses the stack of product. The sling jig assembly includes a raised central platform on which is adapted to rest the bottom of the sling. A gutter formed about the periphery of the central platform is adapted to receive the rolled-down sidewalls of the sling.
Description
- This application claims the benefit from U.S. Provisional Patent Application No. 60/692,385 filed Jun. 20, 2005 whose contents are incorporated herein for all purposes.
- 1. Field of the Invention
- This invention relates generally to containment systems and more particularly to methods and apparatuses for facilitating the loading operation of a sling device for use with transporting bagged or bundled goods.
- 2. Description of the Prior Art
- Granulated products such as seed, fertilizer, grains, and the like are typically contained in nylon, cotton, burlap or plastic bags. When transporting mass quantities of such bags, the individual bags are stacked on pallets and lifted from below by forklift from place to place. When such products are shipped for export on a vessel, however, it is more common to stack
such bags 100 within a soft-sided sling as shown inFIG. 1 . Such a sling would fully envelopbags 100, thereby preventing them from sliding from the stack when moved. - The sling includes a soft-sided
outer bag 10 having abottom 11 andsidewalls 13, conventionally formed from a strong fabric such as nylon. Surrounding thebag 10 are a web of support straps, such as support straps. The particular sling embodiment shown inFIG. 1 includes two straps on eachvertical sidewall 13 of thesling bag 10, such asstraps straps straps 12 a-12 d, respectively, and wrap around the periphery of and especially underneath thebag 10. Thestraps 12 a through 12 d connect together over the top ofbag 10 so thatforklift forks gap 18 formed beneath the straps. - The traditional method for
loading bags 100 within the sling is by hand. The sling is laid flat on a floor and workers would lift each bag or bundle from an unload point and place them within the sling. Once the sling is filled with stackedbags 100 as shown inFIG. 1 , a forklift or overhead crane would lift the loaded sling bystraps 12 a-12 d thereby causing the straps to cinch the sling closed. The act of individually moving bags to within the sling interior is extremely time intensive. - Accordingly, it is desired to provide a new process for loading bagged or bundled products within a sling for transport.
- The apparatus uses a robotic arm to pick and place individual bags of material as they present themselves at the pick-up position on an in-feed conveyor belt. The bags are placed on an inside, bottom surface of a sling bag whose sidewalls have been rolled down. The sling bag sits atop a sling jig assembly that includes a raised central platform on which the sling bottom sits, and a gutter surrounding the platform into which the sling sidewalls are rolled down into. The jig further has an underside support structure that is adapted to sit on a conveyor belt.
- In use, the jig is fitted with a sling by placing the sling bottom on the raised jig platform and rolling the sling sidewalls down into the gutter. The jig is placed on a load conveyor and rolled into place in a load position adjacent the robotic arm. The robotic arm moves individual bags from the pickup position to the load position and places the bags in preprogrammed orientations on the sling bottom and jig platform. Once the bags have been stacked in rows on the platform, the sling sidewalls are rolled upward over the sides of the stack of bags and attached together at the top of the stack to form an enclosed bag. The loaded jig is then moved by the conveyor to an unload position where a forklift or rods of an overhead crane are passed through lifting straps on the sling. The sling is then lifted from the jig and moved to its stored position in a warehouse for future loading onto a ship (e.g. the hold of a cargo ship). The jig is then fitted with another sling and then moved via the load conveyor back to the load position where the load and unload steps are again performed.
- The foregoing and other objects, features and advantages of the invention will become more readily apparent from the following detailed description of a preferred embodiment of the invention that proceeds with reference to the accompanying drawings.
-
FIG. 1 is a side elevation view of a sling loaded with bagged product. -
FIG. 2 is a perspective view of a sling jig assembly constructed according to a preferred embodiment of the invention. -
FIG. 3 is a plan view of the sling jig assembly ofFIG. 2 . -
FIG. 4 is a side elevation view of the sling jig assembly ofFIG. 2 shown along a long side of the jig. -
FIG. 5 is a side elevation view of the sling jig assembly ofFIG. 2 shown along a short side of the jig. -
FIG. 6 is a perspective view of a load/unload assembly environment in which the sling jig assembly ofFIG. 2 is used. -
FIG. 7 is a sectioned view of the sling jig, taken along lines 7-7 ofFIG. 3 with a sling bag mounted therein and product unloaded thereon. -
FIG. 2 shows a preferred embodiment of a sling jig assembly at 20 in perspective view.FIGS. 3-5 show top, front, and side views respectively. -
Jig 20 is constructed to include an outerrectangular skirt 22 in which the four peripheral edges ofskirt 22 are bent upward to form the flanges 24 a-24 d. Flanges 24 a-24 d are coupled together to adjacent flanges using metal ties, forinstance metal tie 26coupling flange 24 b toflange 24 c inFIG. 2 andcoupling flange FIG. 3 . The metal ties are affixed to the flanges via a set ofbolts 27. - A raised
platform 28 is placed on top ofskirt 22 and between flanges 24 a-24 d.Platform 28 includessidewalls 30 defining a rectangular periphery ofplatform 28 and having a raisedplatform top surface 32 that projects above a bottom surface formed withinskirt 22. Thesidewalls 30 of the raisedplatform 28 and the flanges 24 a-24 d of theskirt 22 form a trough orgutter 33 therebetween that runs about the periphery of raisedplatform 32. - A preferred embodiment of the
jig 20 includes an array ofapertures 34 formed throughtop surface 32 to allow air to escape as the sling is placed on the jig. Metal support struts 35 (shown in dashed lines inFIG. 3 ) are fixed beneathtop surface 32 to increase the strength of the jig assembly. A support structure affixed to an underside of the jig comprises sets ofsupport beams Beams 38, positioned on each side ofbeams 36 to form a box therewith, extend below a bottom surface ofbeams 36 and are adapted to contact and sit on a conveyor, such asload conveyor 52 shown inFIG. 6 . At set of spacedapertures 39 are formed throughbeams 38 to act as forklift pockets for side access and lifting ofjig 20 by forklift means 56. - In operation, and as shown in
FIGS. 6 and 7 , asling 10 is positioned within thejig 20 so that thesling bottom 11 and portions of thestraps 12 sit atop the jig raisedplatform 28. Thesling sidewalls 13 are then rolled down into thegutter 33 surrounding the raisedplatform 28 so that thesling sidewalls 13 make a negative angle (that is, angling downward) from thesling bottom 11. In this way, the sling bag is almost inside out.Bagged products 100 are then placed atop thesling bottom 11 with thesidewalls 13 rolled out of the way and not interfering with placement of the bagged product within the sling. Once loading is completed, thesling sidewalls 13 are rolled up over the sides of the stacked product and enclose the stack. Thestraps 12 of the sling are then coupled together to allow a forklift or overhead crane to move the loaded sling to another location. -
FIG. 6 is a plan view of a load/unload assembly environment in which the sling jig assembly ofFIG. 2 is used. The environment includes an in-feed conveyor 40 for transporting baggedproducts 100 serially to anunload position 42. Arobotic arm 44, having an end effector or load/unloadhead 46 attached to a base 48 through a series of pivoted arms, engages with a bagged product at the unloadposition 42 whereby the load/unloadhead 46 of the robotic arm clamps on, thereby engaging baggedproduct 100. The engaged bag is then moved to a load position within thesling 10 mounted on thesling jig 20. Logic controls within the robotic arm are programmed to move between unload and load positions, with the load position changing with each successive pickup and placement depending upon where the next bagged product is to be placed on the stack. - Once loading is complete, the
sling bag 10 can be rolled up over the stack as described above to form a wrappedbundle 50. Thesling jig 20 and bundle 50 are then moved byload conveyor 52 for transport to an unloadposition 54. From the unload position, the loadedsling bag 10 is lifted from thejig 20 and moved for further transport, as via engagement of thetines forklift 56 shown inFIG. 6 with thestraps 12 passing over thebundle 50 to create a webbing, to asubsequent shipping position 60. The unloadedjig 20 is then moved back into place at the load position, or a new jig put in its place to receive further bagged product from the in-feed conveyor 40 viarobotic arm 44. - Having described and illustrated the principles of the invention in a preferred embodiment thereof, it should be apparent that the invention can be modified in arrangement and detail without departing from such principles. We claim all modifications and variation coming within the spirit and scope of the following claims.
Claims (16)
1. A sling jig assembly adapted for use with a sling having a bottom and sidewalls, the sling jig comprising:
a raised central platform on which is adapted to rest the bottom of the sling; and
a gutter formed about the periphery of the central platform and adapted to receive sidewalls of the sling.
2. The sling jig of claim 1 , further including an underside support structure adapted to sit on a conveyor.
3. The sling jig of claim 2 , wherein said underside support structure includes metal support struts fixed beneath a top surface of the raised central platform adapted to increase the strength of the jig assembly.
4. The sling jig of claim 3 , wherein the underside support structure further comprises support beams.
5. The sling jig of claim 1 , further including an array of apertures formed through a top surface of the raised central platform adapted to allow air to escape as the sling bottom is placed on the jig.
6. A method for loading a sling having a bottom and sidewalls comprising:
placing the sling bottom on a raised platform;
rolling the sidewalls down so that the sidewalls form a negative angle with the sling bottom;
loading product onto the bottom of the sling to form a stack; and
rolling the sidewalls up the stack sides so that the sidewalls form a positive angle with the sling bottom.
7. The method of claim 6 , wherein the step of rolling the sling sidewalls downward including rolling such sidewalls downward into a gutter surrounding the raised platform.
8. The method of claim 7 , wherein the step of loading product onto the bottom of the sling includes:
providing a robotic arm with an end effector;
engaging the end effector with product at an unload position;
moving the robotic arm to a preprogrammed position over the bottom of the sling; and
disengaging the product from the end effector.
9. The method of claim 8 , further including the step of repeating the engaging, moving, and disengaging step to form a stack of product and wherein the preprogrammed position is different for each repeated moving step.
10. The method of claim 8 , further including the step of presenting product serially along a conveyor belt to the robotic arm at the unload position.
11. The method of claim 8 , further including the step of moving the loaded sling along a conveyor belt to a sling unload position.
12. A sling and jig assembly comprising:
a rectangular skirt having upturned peripheral edges and forming a cavity therein;
a raised central platform having sidewalls and an elevated top surface located within the cavity between the peripheral edges of the skirt;
a gutter formed within the rectangular skirt between the central platform sidewalls and upturned peripheral edges; and
a sling having a bottom surface and straps passing underneath the bottom surface resting on the elevated top surface of the raised central platform, said sling further having sidewalls rolled down into the gutter.
13. The sling jig of claim 12 , further including an underside support structure adapted to sit on a conveyor.
14. The sling jig of claim 13 , wherein said underside support structure includes metal support struts fixed beneath a top surface of the raised central platform adapted to increase the strength of the jig assembly.
15. The sling jig of claim 14 , wherein the underside support structure further comprises support beams.
16. The sling jig of claim 12 , further including an array of apertures formed through a top surface of the raised central platform adapted to allow air to escape as the sling bottom is placed on the jig.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US11/424,496 US20060283360A1 (en) | 2005-06-20 | 2006-06-15 | Sling jig assembly for use in loading and transporting bagged and bundled products |
US12/685,617 US20100107935A1 (en) | 2005-06-20 | 2010-01-11 | Sling jig assembly for use in loading and transporting bagged and bundled products |
US12/685,613 US20100111664A1 (en) | 2005-06-20 | 2010-01-11 | Method of using a sling jig assembly for loading and transporting bagged and bundled products |
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US69238505P | 2005-06-20 | 2005-06-20 | |
US11/424,496 US20060283360A1 (en) | 2005-06-20 | 2006-06-15 | Sling jig assembly for use in loading and transporting bagged and bundled products |
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US12/685,613 Division US20100111664A1 (en) | 2005-06-20 | 2010-01-11 | Method of using a sling jig assembly for loading and transporting bagged and bundled products |
US12/685,617 Division US20100107935A1 (en) | 2005-06-20 | 2010-01-11 | Sling jig assembly for use in loading and transporting bagged and bundled products |
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US20060283360A1 true US20060283360A1 (en) | 2006-12-21 |
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US12/685,617 Abandoned US20100107935A1 (en) | 2005-06-20 | 2010-01-11 | Sling jig assembly for use in loading and transporting bagged and bundled products |
US12/685,613 Abandoned US20100111664A1 (en) | 2005-06-20 | 2010-01-11 | Method of using a sling jig assembly for loading and transporting bagged and bundled products |
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US12/685,617 Abandoned US20100107935A1 (en) | 2005-06-20 | 2010-01-11 | Sling jig assembly for use in loading and transporting bagged and bundled products |
US12/685,613 Abandoned US20100111664A1 (en) | 2005-06-20 | 2010-01-11 | Method of using a sling jig assembly for loading and transporting bagged and bundled products |
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Cited By (1)
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CN105173167A (en) * | 2015-09-23 | 2015-12-23 | 贵州慧联科技有限公司 | Automatic stacking, bundling, bagging and packaging device for special-shaped cigarettes and packaging method |
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CN104787584B (en) * | 2015-04-02 | 2016-10-26 | 林文彬 | From fold bag staging system |
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- 2006-06-15 US US11/424,496 patent/US20060283360A1/en not_active Abandoned
-
2010
- 2010-01-11 US US12/685,617 patent/US20100107935A1/en not_active Abandoned
- 2010-01-11 US US12/685,613 patent/US20100111664A1/en not_active Abandoned
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105173167A (en) * | 2015-09-23 | 2015-12-23 | 贵州慧联科技有限公司 | Automatic stacking, bundling, bagging and packaging device for special-shaped cigarettes and packaging method |
Also Published As
Publication number | Publication date |
---|---|
US20100107935A1 (en) | 2010-05-06 |
US20100111664A1 (en) | 2010-05-06 |
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Owner name: COLUMBIA/OKURA LLC, WASHINGTON Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SAMPSON, RICHARD JAMES;REEL/FRAME:017798/0178 Effective date: 20060614 |
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