Apparatus and methods for packaging and distributing combinations of complementary containers

Information

  • Patent Grant
  • 6688462
  • Patent Number
    6,688,462
  • Date Filed
    Tuesday, October 23, 2001
    23 years ago
  • Date Issued
    Tuesday, February 10, 2004
    20 years ago
  • Inventors
  • Original Assignees
  • Examiners
    • Foster; Jim
    Agents
    • Woodcock Washburn LLP
Abstract
Combined packages including a plurality of complementary containers are disclosed. A first such container is a first generally rectanguloidal container that contains a first item and a second such container is a second generally rectanguloidal container that contains a second item that is different from and complementary to the first item. A packaging material at least partially surrounds each of the containers, thus holding the container in mutual abutment. A combined package can also include an adhesive between the containers that holds a face of the first container and a face of the second container in mutual abutment. To facilitate palletizing the combined packages, the overall shape of the combined package can be generally rectanguloidal. The first container can have a plurality of faces, each of which is generally coplanar with a respective face of the second container. Apparatus and methods for manufacturing such combined packages are also disclosed.
Description




FIELD OF THE INVENTION




This invention relates to apparatus and methods for packaging and distributing combinations of complementary containers.




BACKGROUND OF THE INVENTION




It is well known that consumers frequently associate certain snack foods and beverages with one another, and that consumers frequently consume snack foods and beverages in combination. For example, consumers might be inclined to eat peanuts when drinking beer, or to eat popcorn when drinking soda. To capitalize on this, the food and beverage industry has attempted to increase sales of both snack foods and beverages by tying sales of certain beverages to sales of snack food products that are often associated with those beverages. For example, the seller of popcorn might offer the popcorn purchaser a “cents-off” coupon that can be redeemed with the purchase of a case of soda, or the seller of peanuts might offer a peanut coupon to the purchaser of a case of beer.




Although this approach provides the beverage purchaser, for example, with an incentive to purchase the snack food, such an approach requires the purchaser to actually retrieve both the beverage and the snack food. The extra effort required to locate the additional item, and then carry it or place it into the shopping cart is often just enough to discourage the purchaser from making the additional purchase. Even if the snack food item is placed in reasonable proximity to the beverage, the consumer can still be dissuaded from buying both the snack food and the beverage by having to pick up and carry more than one item.




Occasionally, the beverage industry offers additional incentives to the purchaser in the form of promotional items (a.k.a. “premiums”). Such promotional items are typically free items that the seller gives to the buyer in exchange for the purchase of the beverages. Examples of such promotional items can include toys, tee shirts, videos, and the like. Like complementary snack food items, the premiums can be offered in separate packages, making it difficult or undesirable for the purchaser to carry both the multi-pack beverage carton and the premium. The premium could be shrink-wrapped, for example, or otherwise attached to the multi-pack beverage carton, but this approach results in an end-product that is difficult to mass-produce, palletize, store, transport, market, and display in large quantities because of its generally odd overall shape. That is, it is difficult to stack a large number of such packages because gaps between adjacent packages cause instability in the stack.




It would be advantageous, therefore, to manufacturers, bottlers, and merchandisers of multi-pack beverage cartons if products and methods were available that entice the consumer to purchase multi-pack cartons of beverage containers in combination with complementary items such as snack foods and promotional items, without requiring the consumer to select and carry separate items. Thus, there is a need in the art for apparatus and methods for packaging and distributing combinations of multi-pack beverage cartons and complementary containers.




SUMMARY OF THE INVENTION




The present invention satisfies these needs in the art by providing apparatus and methods for packaging and distributing combinations of multi-pack beverage cartons and complementary containers. A combined package according to the invention includes a multi-pack carton containing a plurality of beverage containers, combined in mutual abutment with one or more complementary containers. The beverage containers can be cans or bottles, and the multi-pack carton can contain at least six, or preferably twelve, beverage containers. The complementary containers can include a snack food, a promotional item, or any other such item that would entice a consumer to purchase the multi-pack beverage carton in combination with the complementary container.




A packaging material, which can be a transparent, polymeric, packaging material, such as shrink-wrap material or a band, at least partially surrounds both the multi-pack carton and the complementary container, thus holding the multi-pack carton and the container in mutual abutment. The combined package can also include an adhesive between the multi-pack carton and the container that holds a face of the multi-pack carton and a face of the container in mutual abutment. To increase package strength and to facilitate palletizing the combined packages, the surface areas of the faces can be approximately the same, and the combined package can have an overall shape that is generally rectanguloidal.




Apparatus according to the invention for manufacturing a combined package can include a conveyance system, and a packaging material applicator, such as a band applicator or shrink-wrap applicator. The conveyance system transports the multi-pack carton and the complementary container while they are positioned adjacent to one another. The applicator at least partially surrounds both the multi-pack carton and the complementary container with a packaging material that holds them in mutual abutment by applying the packaging material to both the multi-pack carton and the complementary container while they are positioned adjacent to one another. The applicator can include a heat source that shrinks the packaging material or fuses loose ends of the band material together to hold the multi-pack carton and the complementary container in combination.




The apparatus can also include a first conveyor that transports the multi-pack carton and provides the multi-pack carton to the conveyance system, and a second conveyor that transports the complementary container and provides the complementary container to the conveyance system. The first conveyor and the second conveyor meet at a junction adapted to position the multi-pack carton and the complementary container adjacent to one another. An adhesive sprayer can be used to apply an adhesive to at least one of the multi-pack carton and the complementary container to hold the multi-pack carton and the complementary container in mutual abutment.











BRIEF DESCRIPTION OF THE DRAWINGS




The foregoing summary, as well as the following detailed description of the preferred embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there is shown in the drawings an embodiment that is presently preferred, it being understood, however, that the invention is not limited to the specific methods and instrumentalities disclosed.





FIG. 1

depicts a preferred embodiment of a beverage package according to the present invention.





FIG. 2

depicts apparatus for packaging beverages.





FIG. 3

depicts apparatus according to the present invention for packaging combinations of multi-pack beverage cartons and complementary containers.





FIGS. 4A and 4B

depict a preferred embodiment of a beverage package according to the present invention that is particularly suitable for stacking.





FIG. 5

depicts another preferred embodiment of a beverage package according to the present invention.





FIG. 6

depicts an alternative embodiment of apparatus according to the present invention for packaging combinations of multi-pack beverage cartons and complementary containers.





FIGS. 7A and 7B

depict alternate embodiments of a combined package according to the invention that are particularly suitable for stacking.











DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS





FIG. 1

depicts a preferred embodiment of a beverage package


10


according to the present invention. As shown, package


10


comprises a multi-pack carton


12


and a complementary container


14


. Multi-pack carton


12


contains a plurality of beverage containers


22


, which can be, for example, cans, bottles, or the like. Carton


12


can be made of cardboard, or any other suitable material, and can include artwork, trademarks, or other attractive design work to enhance the appeal of the product. Preferably, multi-pack carton


12


contains twelve cans of a beverage such as soda, beer, water, or the like.




Generally, container


14


contains an item that is complementary to the beverage. That is, container


14


will serve as an inducement to the consumer to purchase the multi-pack carton


12


. Container


14


can be a snack food container that contains a snack food, such as popcorn, peanuts, pretzels, or potato chips, for example. Alternatively, container


14


can contain a promotional item or “premium,” such as a toy, tee shirt, video, or the like. Container


14


can be a bag, box, or canister, for example, though container


14


is preferably a box.




A packaging material


16


at least partially surrounds both multi-pack carton


12


and container


14


, and thus holds multi-pack carton


12


and container


14


in combination against one another, i.e., in mutual abutment. Preferably, packaging material


16


is a sheet of transparent material, such as a sheet of transparent polymeric material commonly known as “shrink-wrap,” for example. It should be understood that the packaging material applies a constrictive force to both the multi-pack carton and the complementary container to hold the multi-pack carton and complementary container in mutual abutment.




It is preferred that packaging material


16


is transparent so that the consumer can see both multi-pack carton


12


and container


14


, though it may be desirable to use colored or printed packaging material to further enhance the marketing appeal of combined package


10


. The combined package


10


can then be offered for sale as a single product or stock keeping unit (SKU), and labeled with a single product identifier, such as a universal product code (UPC).




Apparatus and methods according to the present invention for manufacturing combinations of multi-pack beverage cartons and complementary containers will now be described.

FIG. 2

depicts a top view of apparatus that can be used in a typical bottling operation. As shown, empty beverage containers


22


′ are transported via a conveyor


50


to be filled as they pass through a filling station


52


, which comprises a plurality of filling tubes


53


. Once filled, individual beverage containers


22


can be packaged into multi-pack cartons


12


. Although any number of beverage containers can be packaged into a multi-pack carton, multi-pack cartons


12


typically contain six, twelve, or twenty-four beverage containers. For purposes of the present invention, it is preferred that multi-pack cartons


12


contain twelve beverage containers


22


. Multi-pack cartons


12


can then be transported via a conveyor


54


to be “palletized” (i.e., stacked on pallets


57


) at a palletizing area


56


.





FIG. 3

depicts a preferred embodiment of apparatus


100


according to the invention for manufacturing combinations of multi-pack beverage cartons and complementary containers. As shown, conveyor


54


can include a switch


58


so that multi-pack cartons


12


can either continue along conveyor


54


to palletizing area


56


(not shown in FIG.


3


), or be switched off via a conveyor


102


to a packaging area


60


. Alternatively, conveyor


102


can be separate from conveyor


54


, with multi-pack cartons


12


being loaded onto conveyor


102


from a remote location (not shown).




In any event, conveyor


102


transports multi-pack cartons at predefined intervals from one another (i.e., there is a predefined distance between successive cartons on conveyor


102


). Similarly, a second conveyor


104


transports containers


14


at predefined intervals from one another. Conveyors


102


and


104


meet at a junction


106


, where they can continue side-by-side (i.e., adjacent to one another). More preferably, conveyors


102


and


104


end at junction


106


where a third conveyor


108


begins. Thus, junction


106


can be adapted to cause the multi-pack carton and the complementary container to come into mutual abutment. The intervals between containers


14


should be set so that multi-pack cartons


12


and containers


14


arrive at junction


106


concurrently. Preferably, multi-pack cartons


12


and containers


14


are oriented on their respective conveyors


102


,


104


so that when multi-pack cartons


12


and containers


14


meet at junction


106


, multi-pack cartons


12


and containers


14


abut against one another as shown.




Thus, at junction


106


, carton


12


and container


14


are positioned relative to one another such that face


12




a


of carton


12


is in abutment with face


14




a


of container


14


(see FIG.


1


). To facilitate the packaging process, container


14


is preferably configured such that face


14




a


of container


14


has a length


14




l


that is approximately the same as a corresponding length


12




l


of face


12




a


of multi-pack carton


12


. More preferably, to facilitate palletizing the combined packages, face


14




a


of container


14


also has a width


14




w


that is approximately the same as a corresponding width


12




w


of face


12




a


of multi-pack carton


12


. Thus, in a preferred embodiment, face


12




a


has approximately the same surface area as face


14




a.







FIG. 4A

depicts a preferred embodiment of a beverage package


10


according to the present invention that is particularly suitable for palletizing. As shown, the overall shape of package


10


is rectanguloidal. Such a rectanguloidal shape facilitates palletizing and display of a plurality of such packages because the packages


10


can be stacked next to or on top of one another, in any orientation, without significant gaps between adjacent packages (see FIG.


4


B). Carton


12


and container


14


can be sized, shaped, and positioned relative to one another such that faces


12




b


,


12




c


,


12




d


, and


12




e


of carton


12


can be generally coplanar with faces


14




b


,


14




c


,


14




d


, and


14




e


, respectively, of container


14


. Because any number of such combined packages can be stacked in any orientation, a combined package having a generally rectanguloidal shape is preferred as it facilitiates the manufacture, transportation, storage, display and marketing of the combined package.




It is desirable that the positions of multi-pack carton


12


and container


14


remain as fixed as possible relative to one another before and during the application of the packaging material. To accomplish this, as shown in

FIG. 3

, an adhesive sprayer


110


can be used to apply an adhesive either to face


12




a


of carton


12


or face


14




a


of container


14


. When carton


12


and container


14


come into contact at junction


106


, the two will be adhered together, and thus, carton


12


and container


14


can be maintained in mutual abutment as they continue along conveyor


108


.




Preferably, conveyor


108


carries multi-pack carton


12


and container


14


into a wrap applicator


114


that places a sleeve or wrap of shrink film around carton


12


and container


14


in combination. Preferably, wrap applicator


114


accomplishes this through a series of stretch rollers that cover the combined package with complete 360 degree coverage, leaving only a “bullseye” opening


16




a


(see

FIG. 1

) on each end. A heater


116


then heats the shrink film to cause it to shrink into tight, surrounding engagement with carton


12


and container


14


.




Preferably, wrap applicator


114


and heater


116


are parts of a shrink wrap machine


115


, also known as a “heat shrink tunnel.” After it has been shrunk, packaging material


16


contains multi-pack carton


12


and snack food container


14


in combination, with only the bullseye openings at each end remaining after combined package


10


has passed through heat shrink tunnel


115


. Packages


10


can continue along conveyor


108


, to a location (not shown) where they can be palletized or otherwise unloaded for storage and shipment.





FIG. 5

depicts another preferred embodiment of a beverage package


20


according to the present invention. As shown, packaging material


26


can be a strap, belt, belly band, or any other configuration that wraps around four sides of the combined package


20


, thereby holding multi-pack carton


12


and container


14


in mutual abutment. Preferably, packaging material


26


is made from a transparent or translucent polymeric material, though it may be desirable to use colored or printed packaging material to further enhance the marketing appeal of combined package


20


. As shown, the packaging material


26


can include a handle


28


, via which the combined package


20


can be lifted. Additional description of belly-bands can be found in U.S. Pat. Nos. 4,919,260 and 4,269,308, the contents of each of which are hereby incorporated herein by reference.





FIG. 6

depicts a preferred embodiment of apparatus


200


for manufacturing combined food and beverage packages


20


, according to the present invention. As shown, conveyor


54


can include a switch


58


so that multi-pack cartons


12


can either continue along conveyor


54


to palletizing area


56


, or be switched off via conveyor


102


to a packaging area


60


. Alternatively, conveyor


102


can be separate from conveyor


54


, with multi-pack cartons


12


being loaded onto conveyor


102


from a remote location (not shown).




In any event, conveyor


102


transports multi-pack cartons


12


at predefined intervals from one another (i.e., there is a predefined distance between successive cartons on conveyor


102


). Similarly, a second conveyor


104


transports containers


14


at predefined intervals from one another. Conveyors


102


and


104


meet at a junction


106


, where they can continue side-by-side. More preferably, conveyors


102


and


104


end at junction


106


where a third conveyor


108


begins. Thus, junction


106


can be adapted to cause the multi-pack carton and the container to be positioned adjacent to one another (e.g., to come into mutual abutment). The intervals between containers


14


should be set so that multi-pack cartons


12


and containers


14


arrive at junction


106


concurrently.




Preferably, multi-pack cartons


12


and containers


14


are oriented on their respective conveyors


102


,


104


so that when multi-pack cartons


12


and containers


14


meet at junction


106


, multi-pack cartons


12


and containers


14


abut against one another as shown. Additionally, in a preferred embodiment, wherein the overall shape of the combined package


20


is to be generally rectangular, multi-pack cartons


12


and containers


14


are oriented on their respective conveyors


102


,


104


so that when they meet at junction


106


, they are plumb with one another (i.e., the corresponding faces are generally co-planar as described above). It is anticipated that the combined package will be stronger if the faces are oriented in such a generally co-planar arrangement. This additional strength is desirable as it provides stability for transportation.




Thus, at junction


106


, carton


12


and container


14


are positioned relative to one another such that face


12




a


of carton


12


is in abutment with face


14




a


of container


14


(see FIG.


5


). It is desirable that the positions of multi-pack carton


12


and snack food container


14


remain as fixed as possible relative to one another before and during the application of the packaging material. To accomplish this, as shown in

FIG. 6

, an adhesive sprayer


110


can be used to apply an adhesive either to face


12




a


of carton


12


or face


14




a


of container


14


. When carton


12


and container


14


come into contact at junction


106


, the two will be adhered together, and thus, carton


12


and container


14


can be maintained in mutual abutment as they continue along conveyor


108


.




Conveyor


108


carries multi-pack carton


12


and container


14


into a band applicator


214


that places a plastic strap, belt, or belly-band around carton


12


and container


14


, thereby holding them in mutual abutment. Preferably, band applicator


214


includes a band roller


215


. Band roller


215


is a roller or spool onto which a string of belly band material is wound. As the packages pass through band applicator


214


, band roller


215


rotates and the belly band material unwinds from the spool


215


. The belly band


26


is wrapped around the multi-pack beverage carton


12


and the complementary container


14


as they are held in mutual abutment. The belly band


26


is cut off of the spool


215


, and the loose ends of the band


26


are fused together, via a heater, laser, or other such heat source


216


, thereby holding the multi-pack carton


12


and complementary container


14


in mutual abutment to form the combined package


20


.




Alternatively, the belly-band


26


can be wrapped around the multi-pack carton


12


and complementary container


14


like a rubber band. The heat source


216


can be used to shrink the belly band


26


snugly onto the multi-pack carton


12


and complementary container


14


, thereby forming the combined package


20


. Packages


20


can continue along conveyor


108


, to a location (not shown) where they can be palletized or otherwise unloaded for storage and shipment.





FIGS. 7A and 7B

depict alternate embodiments of a combined package


30


according to the invention that are particularly suitable for stacking. As shown, package


30


includes a multi-pack beverage carton


12


, a first complementary container


32


, and a second complementary container


34


. Such embodiments are particularly useful in applications wherein the seller of the combined package is desirous of marketing more than one complementary item with the beverage. For example, such an embodiment would be useful to sell beer, tortilla chips, and salsa as a single combined package. The complementary containers


32


,


34


can be disposed such that each is adjacent to the multi-pack carton


12


, as shown in

FIG. 7A

, or such that the first container


32


is adjacent the multi-pack carton


12


and the second container


34


is adjacent the first container


32


, as shown in FIG.


7


B. Alternatively, the multi-pack carton


12


can be situated between the complementary containers


32


,


34


. It is contemplated that the combined package


30


can include any number of multi-pack beverage cartons and any number of complementary containers. In any event, the multi-pack carton


12


and complementary containers


32


and


34


are preferably sized and shaped such that the overall shape of the combined package is generally rectanguloidal.




Those skilled in the art will appreciate that numerous changes and modifications may be made to the preferred embodiments of the invention and that such changes and modifications may be made without departing from the spirit of the invention. It is therefore intended that the appended claims cover all such equivalent variations as fall within the true spirit and scope of the invention.



Claims
  • 1. A combined package, comprising:a multi-pack carton containing a plurality of individual containers each containing a first item; a complementary container containing a second item that is complementary to and different from the first item, wherein the complementary container is separate from the multi-pack carton; and a packaging material at least partially surrounding both the multi-pack carton and the complementary container, wherein the packaging material applies to both the multi-pack carton and the complementary container a constrictive force that holds the multi-pack carton and the complementary container in mutual abutment.
  • 2. The package of claim 1, wherein the individual containers are cans or bottles, and the carton contains at least six individual containers.
  • 3. The package of claim 1, wherein the individual containers are cans or bottles, and the carton contains at least twelve individual containers.
  • 4. The package of claim 1, wherein the packaging material is a sheet of polymeric material.
  • 5. The package of claim 1, wherein the packaging material is transparent.
  • 6. The package of claim 1, wherein the packaging material is a shrink-wrap material.
  • 7. The package of claim 1, further comprising an adhesive between the carton and the complementary container that holds a face of the carton and a face of the complementary container in mutual abutment.
  • 8. The package of claim 7, wherein each of the faces has a length, the lengths of the faces being approximately the same.
  • 9. The package of claim 8, wherein each of the faces has a surface area, the surface areas of the faces being approximately the same.
  • 10. The package of claim 1, wherein the packaging material is a band.
  • 11. The package of claim 1, wherein the combined package has an overall shape that enables a plurality of said combined packages to be stacked next to as well as on top of one another on a pallet.
  • 12. The package of claim 1, wherein the combined package has an overall shape that is generally rectanguloidal.
  • 13. The package of claim 12, wherein each of the carton and the complementary container has a generally rectanguloidal shape.
  • 14. A combined package, comprising:a first, generally rectanguloidal container that contains a plurality of individual containers each containing a first item; a second, generally rectanguloidal container that contains a second item, wherein the second item is different from and complementary to the first item, wherein the second container is separate from the first container; and a packaging material that applies to each of the containers a constrictive force that holds the containers in mutual abutment such that the combined package has an overall shape that enables a plurality of said combined packages to be stacked next to as well as on top of one another on a pallet.
  • 15. The package of claim 14, wherein the packaging material is a sheet of polymeric material.
  • 16. The package of claim 14, wherein the packaging material is a shrink-wrap material.
  • 17. The package of claim 14, wherein the packaging material is a band.
  • 18. The package of claim 14, wherein the first item is a beverage and the second item is a snack food.
  • 19. The package of claim 14, wherein the individual containers are cans or bottles and the first container contains at least six individual containers.
  • 20. The package of claim 14, further comprising an adhesive between the containers that holds a face of the first container and a face of the second container in mutual abutment.
  • 21. The package of claim 20, wherein each of the faces has a length, the lengths of the faces being approximately the same.
  • 22. The package of claim 21, wherein each of the faces has a surface area, the surface areas of the faces being approximately the same.
  • 23. The package of claim 14, wherein the combined package has an overall shape that is generally rectanguloidal.
  • 24. The package of claim 23, wherein each of the containers has a generally rectanguloidal shape.
  • 25. The package of claim 14, wherein the first container has a first face that is generally coplanar with a respective first face of the second container.
  • 26. The package of claim 14, wherein the first container has a plurality of faces, the second container has a plurality of faces, and each face of the first container is generally coplanar with a respective face of the second container.
  • 27. The package of claim 14, further comprising a third, generally rectanguloidal container that contains a third item that is different from both of the first and second items and is complementary to at least one of the first and second items,wherein the packaging material at least partially surrounds the first, second, and third containers, thus holding the containers in mutual abutment.
  • 28. A combined package, comprising:a first container containing a first item, the first container having a first plurality of faces, and; a complementary container containing a second item that is complementary to the first item, the second container having a second plurality of faces; and a packaging material that at least partially surrounds both the carton and the complementary container, thus holding the carton and the complementary container in mutual abutment such that each face of the first container is generally coplanar with a respective face of the second container.
  • 29. The package of claim 28, wherein the packaging material is a sheet of polymeric material.
  • 30. The package of claim 28, wherein the packaging material is a shrink-wrap material.
  • 31. The package of claim 28, wherein the packaging material is a band.
  • 32. The package of claim 28, wherein the packaging material applies a constrictive force to each of the containers to hold the containers in mutual abutment.
  • 33. The package of claim 28, wherein the combined package has an overall shape that is generally rectanguloidal.
  • 34. The package of claim 33, wherein each of the containers has a generally rectanguloidal shape.
  • 35. The package of claim 28, further comprising a third container that contains a third item that is different from both of the first and second items and is complementary to at least one of the first and second items,wherein the packaging material at least partially surrounds the first, second, and third containers, thus holding the containers in mutual abutment.
  • 36. The package of claim 28, wherein the first container is separate from the second container.
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 09/922,976, filed Aug. 6, 2001, which is a continuation-in-part of U.S. patent application Ser. No. 09/618,194, filed Jul. 18, 2000, now U.S. Pat. No. 6,293,393. The subject matter disclosed herein is related to the subject matter disclosed in U.S. patent application Ser. No. 09/957,904, filed Sep. 21, 2001. The contents of each of the above-referenced patents and patent applications are hereby incorporated herein by reference.

US Referenced Citations (29)
Number Name Date Kind
2287729 Fallert Jun 1942 A
2290971 King Jul 1942 A
2487293 Belsinger Nov 1949 A
2694518 Zanck et al. Nov 1954 A
3195719 Giesler Jul 1965 A
3759373 Werth et al. Sep 1973 A
3759378 Werth Sep 1973 A
4078357 Ida Mar 1978 A
4269308 Platt May 1981 A
4471870 Uhlig Sep 1984 A
4533052 Fruchey et al. Aug 1985 A
4795028 Wittig et al. Jan 1989 A
4819793 Willard et al. Apr 1989 A
4919260 Cunningham Apr 1990 A
5056659 Howes et al. Oct 1991 A
5299733 Werth Apr 1994 A
5372827 Brauner et al. Dec 1994 A
5657874 Hustad et al. Aug 1997 A
5664671 Nedblake, Jr. Sep 1997 A
5676244 Green et al. Oct 1997 A
5727679 Newarski Mar 1998 A
5765336 Neagle et al. Jun 1998 A
5816411 Smith Oct 1998 A
5996316 Kirschner Dec 1999 A
6003287 Ballestrazzi et al. Dec 1999 A
6026952 Brooks Feb 2000 A
6058679 Ziegler et al. May 2000 A
6123214 Goebel Sep 2000 A
6293393 Clay Sep 2001 B1
Continuations (1)
Number Date Country
Parent 09/922976 Aug 2001 US
Child 10/037893 US
Continuation in Parts (1)
Number Date Country
Parent 09/618194 Jul 2000 US
Child 09/922976 US