Fastening strips with barbed closure elements
An interlocking closure fastening device comprises a pair of elongate closure elements. One of the closure elements has a barbed surface along a portion thereof. A second closure element includes a complemental surface that, when mated with the first surface, provides a perceptible tactile sensation.
The present invention relates to interlocking closure strips, and more particularly, an interlocking fastening strip that includes at least one barbed closure element particularly adapted for use with reclosable plastic storage bags.
BACKGROUND OF THF INVENTIONKnown closure fastening devices used in conjunction with thermoplastic reclosable containers provide an effective seal of the contents in the container when the fastening device is placed in a closed position. Such fastening devices typically comprise a pair of complementary closure strip elements that extend longitudinally along the upper portions of opposed sidewalls of the containers. The closure elements are constructed such that they interlockingly engage with each other in a closed or occluded position, while at the same time permitting relatively easy disengagement of the closure elements when the container is opened from the outside.
One desirable feature of many such fastening devices is that they enable the user to determine the state of closure of the fastening device. For example, one known arrangement provides a visual indication of the closure state of the fastening device with the use of various colorations of the opposed closure elements. One such arrangement is disclosed in U.S. Pat. No. 4,829,641. When the opposed closure elements are interlocked, the user perceives a third distinct coloration of overlapping element portions indicative of proper closure of the container.
Other conventional techniques utilize a particular tactile “feel” provided to the user of the container to indicate closure of the container. For example, U.S. Pat. No. 5,070,584 discloses a zipper arrangement that provides the perception of a “bumpy” feel. The zipper arrangement includes a pair of opposing interlockable rib and groove profiles where one of the profiles has a plurality of indentations spaced longitudinally therealong. These indentations purportedly provide an audible clicking sound or bumpy feel that is perceptible to the user as the cutout or weakened portions flex during closure.
SUMMARY OF THE INVENTIONThe present invention provides a fastening closure strip for use with a reclosable storage container that comprises a pair of interlocking closure elements. The fastening closure strip has a multiple position feature. In accordance with this invention, the user can move the closure strip from one position to another position. The engagement surfaces of the closures are referred to herein as barbed surfaces owing to the multiplicity of their engagement surfaces. One form of such engagement surfaces are often referred to as hooks. Accordingly, references herein to “hooks” are intended to refer to one type of a barb for use in this invention. At least one of the closure elements has a barbed surface to provide the user of the storage container a distinctive tactile “feel” when the container is closed.
Structurally, a closure fastening device according to the present invention comprises a pair of opposed, longitudinally extending closure strip elements adapted to interlockingly engage with each other a fully occluded mode. One of the closure element strips includes a plurality of barbs extending from an upright peripheral segment of the closure strip. The second closure element includes a complemental segment that intermittently engages the barbs as the closure elements are moved to the fully occluded mode upon the application of compression forces. This manner of engagement provides a ratcheting sensation to the user of the interlocking closure device.
In one embodiment, the first closure element strip comprises a base portion having a pair of spaced-apart, elongate first webs extending therefrom. The webs each include a male hook member extending outwardly from each of the respective webs. The second closure element similarly comprises a pair of webs extending from a second base portion. The second webs include a plurality of spaced-apart female barbs that extend inwardly to permit intermittent ratcheting engagement with the corresponding hook members when the fastening device is moved from a deoccluded mode to the occluded mode.
The invention may also be embodied in a closure fastening device comprising a first male closure element that includes a base portion having a pair of spaced-apart, elongate first webs extending therefrom. In this embodiment, the first webs each include a plurality of spaced-apart male barbs extending outwardly from each of the webs. The fastening device includes a female closure element having a pair of second webs extending from a second base portion. At least one of the second webs include a female hook member that extends inwardly to permit intermittent ratcheting engagement with the corresponding male barbs when the fastening device is moved from a deoccluded mode to the occluded mode.
In yet another embodiment, a closure fastening device comprises a male closure element with a pair of webs in the form of a serpentine profile configuration to provide a substantial wave like surface. This profile configuration forms a plurality of interleaved protrusions and corresponding depressions. The device further comprises a complementary female closure element including a pair of second webs, each of which has a female hook member adapted to intermittently engage the protrusions of the serpentine profile configuration.
Other advantages and embodiments of the invention will be apparent to those skilled in the art upon consideration of the following detailed description and appended claims, and upon reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Generally, the present invention relates to closure fastening strips that include complemental closure elements arranged to be interlocked over a preselected length of the strip. The fastening closure strip has a multiple position feature. In accordance with this invention, the user can move the closure strip from one position to another position. The engagement surfaces of the closures are referred to herein as barbed surfaces owing to the multiplicity of their engagement surfaces. One form of such engagement surfaces are often referred to as hooks. Accordingly, references herein to “hooks” are intended to refer to one type of a barb for use in this invention. At least one of the closure elements has a barbed surface used to interconnect a complementary closure element surface when the closure elements are placed in an occluded position. The barbed surface provides a feel of ratcheting engagement, as well as an audible sound, to a user of the plastic container upon the application of compressive forces to the closure bases to actively engage the barbs, effectively occluding the fastening strip.
The structural details of the closure elements 12 and 14 are best seen in
The first closure element 12 also includes a pair of opposed winged guide members 32, 34 spaced laterally from the webs 20, 22 respectively. Preferably, the guide members 32, 34 are each constructed with end segments 32e, 34e that flare outwardly in order to funnel or guide the complementary webs of the second closure element 14 into alignment with the male hook members 24 and 26 as the closure elements are occluded, as described in greater detail below.
In this embodiment, the closure element 14 includes a fin 52 extending from the base 18 between the webs 36, 38. The fin 52 may be included to maintain the structural integrity and facilitate the extrusion of the closure element 18. Similarly, closure element 12 may also include a fin extending from base 16. Furthermore, the closure elements 12, 14 may include one, two, three or more fins as may be desired. The fin may be used with any of the embodiments in this application as appropriate. In addition, the fin may also be designed to also function as a color enhancement member as described in U.S. Pat. No. 4,829,641, the subject matter of which is incorporated herein by reference.
The representative dimensions of a representative male closure element is shown in
The female closure element used in conjunction with the male closure element of
In operation, compression forces are applied to the opposed closure elements 12 and 14 in the directions denoted by the arrows 66, 68 shown in
As the closure members are urged together, the male hook members 24, 26 intermittently engage corresponding ones of the barbs 40, 46 as the hook members are located within the notches disposed intermediate to the barbs. The closure elements thus temporarily achieve the orientation shown in
Preferably, each such intermittent engagement of the male hook elements with respective ones of the barbs provides sufficient interlocking engagement of the closure elements to maintain closure of the container. In most instances, however, the user will fully occlude the opposed closure members, in part due to the audible sound generated by the fastening device.
In order to deocclude the fastening device 10, the closure elements 12, 14 are urged apart from each other by pulling on the mouth portion of the plastic container (see
In
The male closure element 114 comprises a base section 118 that similarly has a pair of spaced-apart webs 136, 138 extending outwardly from the base portion 118. A first one of the webs 136 includes a plurality of spaced-apart barbs 140a-c, each of which extends outwardly from the first web 136. As with the female closure element described above, the barbs 140 are formed integrally with the first web 136 and have generally contoured surfaces 142a-c which guide the barbs into mated engagement with the corresponding female hook member 124. The barbs 140 similarly define a plurality of interdigital notches 144a-c in the spaces between the barbs. Likewise, the second web 138 includes a plurality of spaced-apart barbs 146a-c which extend outwardly from the second web 138. The barb 146a disposed at the distal end of the second web preferably includes an inwardly extending guide surface 148a that extends at least partially inwardly from the second web 138. This guide surface 148a assists in guiding the barb 146a for occlusion with the mating female hook member. The remaining surfaces corresponding with the barbs 146b and 146c each include contoured surfaces 148b-c to similarly facilitate engagement of the barbs 148b-c with the mating female hook member. The barbs 146 additionally form a plurality of interdigital notches 150a-c in the spaces between adjacent barbs. As with the embodiment described above, each web may similarly have two, three, four, or more barbs as may be desired.
The male closure element 114 also includes a pair of opposed winged guide members 132, 134 spaced laterally from the webs 136, 138. As with the guide members described above in connection with
In the illustrated embodiment, the female closure element 112 includes a fin 152 extending from the base 116 and the male closure element 114 includes a pair of spaced-apart fins 160, 162 extending from the base 118 intermediate the webs 136, 138. The fins 152, 160, 162 may be included to maintain the structural integrity and facilitate the extrusion of the closure elements 116, 118. The closure elements 112, 114 may include one, two, three or more fins as may be desired.
The operation of the closure fastening device shown in
Another embodiment of
The male closure element 214 also includes a pair of guide members 232, 234. As noted above, the guide members 232, 234 are spaced laterally from the webs 236, 238, respectively. The first closure element 212 includes a fin 252 extending from the base 216 and the second closure element 214 includes two fins 260, 262 extending from the base 218. The fins 252, 260, 262 may be included to maintain the structural integrity and facilitate the extrusion of the closure elements. The closure elements 212, 214 may include one, two, three or more fins as may be desired.
In order to effectuate closure of the fastening device 210 shown in
A second closure element 314 similarly comprises a base portion 318 with a pair of inner female webs 336, 338 with female hook portions 340, 342 located at the ends of the inner webs. Each of the female hook portions include an inwardly facing surface shown in
In order to interlock the fastening device, a compression force is applied to the opposed closure elements 312, 314 such that the outer webs 332, 334 abut corresponding innermost protrusions 340a, 346a, as is shown in
Another embodiment of the spaced protrusions or bumps is shown in
The closure device may include other types of closure elements. Referring to
As the closure elements are urged together, the male protrusions 527, 529 intermittently engage corresponding ones of the barbs 545a-545c, 547a-547c as the protrusions 527, 529 are located within the notches 549a-549c, 551a-551c. The closure elements interlock in an interdigitating step-wise fashion until they are fully occluded. Accordingly, a ratcheting engagement of the protrusions with the barbs that is perceptible to the user occurs as the closure elements are urged together in an interdigitating fashion. In addition, this manner of ratcheting engagement generates an audible sound at each instance in which the protrusion disengages from one of the barbs and is located within the notches formed therebetween due to the interdigitating nature. The sound is caused by the ratcheting or snapping of the protrusion into the notch which results from the release of the flexure force of the barb. This sound is likewise readily perceptible by the user during a closure operation.
Another embodiment of the closure element with multiple barbs is shown in
As the closure elements are urged together, the male protrusions 627, 629 intermittently engage corresponding ones of the barbs 645, 647 as the barbs are located within the notches 649a-649c, 651a-551c. The closure elements interlock in an interdigitating step-wise fashion until they are fully occluded. Accordingly, a ratcheting engagement of the protrusions with the barbs that is perceptible to the user occurs as the closure elements are urged together in an interdigitating fashion. In addition, this manner of ratcheting engagement generates an audible sound at each instance in which the protrusion disengages from one of the barbs and is located within the notches formed therebetween due to the interdigitating nature. The sound is caused by the ratcheting or snapping of the barb into the notch which results from the release of the flexure force of the barb. This sound is likewise readily perceptible by the user during a closure operation.
The embodiment shown in
The female closure element 714 includes a channel 739 and two webs 741, 743 which extend from a base 718. The webs 741, 743 include barbs 745, 747 and notches 749, 751 adjacent the barbs. The barbs have generally contoured surfaces which guide the protrusions 727, 729 into mated engagement with the notches 749, 751. While this particular embodiment shows three barbs per wall, each wall may have one, two, four or more barbs as may be desired.
The male closure element 712 includes a web 720 which extends from a base 716. The web 720 includes a head portion 724, protrusions 727, 729 and notches 749, 751. While this particular embodiment shows three protrusions on each side of the web, each side of the web may have one, two, four or more protrusions as may be desired.
In order to effectuate closure of the fastening device 710 shown in
Referring to
The first closure element 812 is similar to closure element 214 in
The second closure element 814 is similar to the first closure element 812. The second closure element 814 includes a pair of spaced-apart serpentine webs 836, 838 that extend generally outwardly from a base portion 818. In this embodiment, the first web 836 of the pair is of a wave like or serpentine configuration, and includes a plurality of spaced protrusions 840a-c, each of which projects outwardly from the first web 836. The serpentine profile configuration also defines a plurality of spaced depressions 844a-c in the spaces between the protrusions. Likewise, the second web 838 includes spaced protrusions 846a-c, which extend outwardly from the second web 838. The profile configuration of the second web 838 similarly defines a plurality of spaced depressions 850a-c intermediate to the protrusions. While the webs are shown with three protrusions and corresponding depressions, other numbers of protrusions and depressions may alternatively be utilized, such as, two protrusions and depressions, or four protrusions and depressions, or five or more protrusions and depressions. The protrusions are similar to barbs.
The male closure element 814 also includes a pair of guide members 832, 834. As noted above, the guide members 832, 834 are spaced laterally from the webs 836, 838, respectively. The first closure element 812 includes a fin 852 extending from the base 816 and the second closure element 814 includes two fins 860, 862 extending from the base 818. The fins 852, 860, 862 may be included to maintain the structural integrity and facilitate the extrusion of the closure elements. The closure elements 812, 814 may include one, two, three or more fins as may be desired.
In order to effectuate closure of the fastening device 810 shown in
Referring to
The first closure element 912 includes a pair of spaced-apart webs 920, 922 that extend generally outwardly from a base portion 916. In this embodiment, the first web 920 of the pair includes a plurality of spaced triangular protrusions 924, each of which projects outwardly from the first web 920. The profile configuration also defines a plurality of spaced depressions 925 in the spaces between the protrusions. Likewise, the second web 922 includes spaced triangular protrusions 926, which extend outwardly from the second web 922. The profile configuration of the second web 922 similarly defines a plurality of spaced depressions 927 intermediate to the protrusions. While the webs are shown with four protrusions and corresponding depressions, other numbers of protrusions and depressions may alternatively be utilized, such as, two protrusions and depressions, or three protrusions and depressions, or five or more protrusions and depressions. The protrusions are similar to barbs.
The second closure element 914 is similar to the first closure element 912. The second closure element 914 includes a pair of spaced-apart webs 936, 938 that extend generally outwardly from a base portion 918. In this embodiment, the first web 936 of the pair includes a plurality of spaced triangular protrusions 940, each of which projects outwardly from the first web 936. The profile configuration also defines a plurality of spaced depressions 944 in the spaces between the protrusions. Likewise, the second web 938 includes spaced triangular protrusions 946, which extend outwardly from the second web 938. The profile configuration of the second web 938 similarly defines a plurality of spaced depressions 950 intermediate to the protrusions. While the webs are shown with four protrusions and corresponding depressions, other numbers of protrusions and depressions may alternatively be utilized, such as, two protrusions and depressions, or three protrusions and depressions, or five or more protrusions and depressions. The protrusions are similar to barbs.
The male closure element 914 also includes a pair of guide members 932, 934. As noted above, the guide members 932, 934 are spaced laterally from the webs 936, 938, respectively. The first closure element 912 includes a fin 952 extending from the base 916 and the second closure element 914 includes two fins 960, 962 extending from the base 918. The fins 952, 960, 962 may be included to maintain the structural integrity and facilitate the extrusion of the closure elements. The closure elements 912, 914 may include one, two, three or more fins as may be desired.
In order to effectuate closure of the fastening device 910 shown in
The triangular protrusions 924, 926, 940, 946 are designed so that the force required to occlude the closure device is less than the force required to deocclude the closure device. Specifically, the faces of the triangular protrusions which contact during occlusion are at an angle which will facilitate occlusion. The faces of the triangular protrusions which contact during deocclusion are horizontal which will make deocclusion more difficult than occlusion. The angles of the faces can be changed to achieve the desired results.
Referring to
The first closure element 1012 includes a pair of spaced-apart webs 1020, 1022 that extend generally outwardly from a base portion 1016. In this embodiment, the first web 1020 of the pair includes a plurality of spaced rounded protrusions 1024, each of which projects outwardly from the first web 1020. The profile configuration also defines a plurality of spaced depressions 1025 in the spaces between the protrusions. Likewise, the second web 1022 includes spaced rounded protrusions 1026, which extend outwardly from the second web 1022. The profile configuration of the second web 1022 similarly defines a plurality of spaced depressions 1027 intermediate to the protrusions. While the webs are shown with three protrusions and corresponding depressions, other numbers of protrusions and depressions may alternatively be utilized, such as, two protrusions and depressions, or four protrusions and depressions, or five or more protrusions and depressions. The protrusions are similar to barbs.
The second closure element 1014 is similar to the first closure element 1012. The second closure element 1014 includes a pair of spaced-apart webs 1036, 1038 that extend generally outwardly from a base portion 1018. In this embodiment, the first web 1036 of the pair includes a plurality of spaced rounded protrusions 1040, each of which projects outwardly from the first web 1036. The profile configuration also defines a plurality of spaced depressions 1044 in the spaces between the protrusions. Likewise, the second web 1038 includes spaced rounded protrusions 1046, which extend outwardly from the second web 1038. The profile configuration of the second web 1038 similarly defines a plurality of spaced depressions 1050 intermediate to the protrusions. While the webs are shown with three protrusions and corresponding depressions, other numbers of protrusions and depressions may alternatively be utilized, such as, two protrusions and depressions, or four protrusions and depressions, or five or more protrusions and depressions. The protrusions are similar to barbs.
The second closure element 1014 also includes a pair of guide members 1032, 1034. As noted above, the guide members 1032, 1034 are spaced laterally from the webs 1036, 1038, respectively. The first closure element 1012 includes a fin 1052 extending from the base 1016 and the second closure element 1014 includes two fins 1060, 1062 extending from the base 1018. The fins 1052, 1060, 1062 may be included to maintain the structural integrity and facilitate the extrusion of the closure elements. The closure elements 1012, 1014 may include one, two, three or more fins as may be desired.
In order to effectuate closure of the fastening device 1010 shown in
The second closure element 1114 includes inner webs 1121, 1123 and a base 1117 which are similar to webs 20, 22 and base 16 in
In this embodiment, the barbed surface includes triangular protrusions. The triangular protrusions are designed to control the magnitude of the tactile sensation both during opening and closing of the closure device. Specifically, the faces of the triangular protrusions which contact during occlusion are at an angle which will create a strong tactile sensation during occlusion. The faces of the triangular protrusions which contact during deocclusion are substantially vertical which will create a reduced or mild tactile sensation during occlusion. The angle of the faces can be changed to achieve the desired results.
The fastening device 1110 is shown in the occluded position in
The second closure element 1214 includes inner webs 1236, 1238 and a base 1218 which are similar to webs 136, 138 and base 118 in
The fastening device 1210 is shown in the occluded position in
The second closure element 1314 includes inner webs 1336, 1338 and a base 1318 which are similar to webs 1236, 1238 and base 1218 in
The fastening device 1010 is shown in the occluded position in
The closure fastening devices of this invention are preferably formed from thermoplastic materials such as high, medium or low density polyethylene or from other resins. Such fastening devices can readily be manufactured by known methods such as by extrusion, by the use of molds or other known methods of producing such devices. They can be manufactured as a strip for later attachment to a plastic film or they can be formed integral with the film. In the instance where formed by extrusion, the closure fastening devices may be extruded with or without flange portions on one or both of the closure elements depending on the particular manufacturing operations utilized.
There are various advantages to the fastening device according to the present invention. For example, the barbed arrangement provides an enhanced feel to the user. Furthermore, the present invention provides an enhanced feel with an arrangement that provides various points of occlusion. In addition, the invention, when utilized in an arrangement comprising multiple barbs, may provide step-wise color enhancement to provide various degrees of visual indication. In particular, the user may perceive different shades of color change depending on the level of occlusion of the barbs with corresponding hooks when looking at the fastening device from the side.
Accordingly, a closure fastening device that includes a first closure element with at least one barbed surface and a second closure element with a complementary mating surface that provides intermittent ratcheting engagement with the barbed surface that meets the aforestated objectives has been described. In this way, the user perceives a tactile feel as the closure elements are engaged. It will be apparent to those skilled in the art that a number of modifications can be made to the invention disclosed, particularly by those having the benefit of the foregoing teachings, without departing from the spirit of these principles. Accordingly, it is intended that the invention be limited only by the scope of the appended claims.
Claims
1. An interlocking closure fastening device comprising a pair of opposed, longitudinally extending closure elements adapted to interlockingly engage with each other, the first closure element having a first barbed surface extending along a segment thereof, and a second closure element including a first complementary surface disposed along a segment thereof, said first complementary surface being in engagement with said first barbed surface in an occluded position, the surfaces providing ratcheting engagement upon the application of compression forces to the first and second closure elements.
2. The invention as in claim 1 wherein said first closure element includes a base and said first barbed surface is oriented at an angle in the range of 0°-90° relative to said base.
3. The invention as in claim 2 wherein said first barbed surface is oriented at an angle of substantially 90° to said base.
4. The invention as in claim 3 wherein said first closure element includes a web and said first barbed surface is located on said web.
5. The invention as in claim 4 wherein said first barbed surface includes a plurality of hooks.
6. The invention as in claim 4 wherein said first barbed surface includes a plurality of saw teeth.
7. The invention as in claim 4 wherein said first barbed surface includes a plurality of protrusions.
8. The invention as in claim 4 wherein said first barbed surface has a serpentine configuration.
9. The invention as in claim 4 wherein said first complementary surface has a barb.
10. The invention as in claim 4 wherein said first complementary surface has a barbed surface.
11. The invention as in claim 10 wherein said barbed surfaces include a plurality of hooks.
12. The invention as in claim 10 wherein said barbed surfaces include a plurality of saw teeth.
13. The invention as in claim 10 wherein said barbed surfaces include a plurality of protrusions.
14. The invention as in claim 10 wherein said barbed surfaces have a serpentine configuration.
15. The invention as in claim 3 wherein said first closure element includes two webs and said first barbed surface is located on one of said webs and a second barbed surface is located on said other web.
16. The invention as in claim 15 wherein said barbed surfaces include a plurality of hooks.
17. The invention as in claim 15 wherein said barbed surfaces include a plurality of saw teeth.
18. The invention as in claim 15 wherein said barbed surfaces include a plurality of protrusions.
19. The invention as in claim 15 wherein said barbed surfaces have a serpentine configuration.
20. The invention as in claim 15 wherein said first complementary surface has a barb.
21. The invention as in claim 15 wherein said first complementary surface has a barbed surface and said second closure element includes a second complementary surface, said second complementary surface has a barbed surface.
22. The invention as in claim 21 wherein said barbed surfaces include a plurality of hooks.
23. The invention as in claim 21 wherein said barbed surfaces include a plurality of saw teeth.
24. The invention as in claim 21 wherein said barbed surfaces include a plurality of protrusions.
25. The invention as in claim 21 wherein said barbed surfaces have a serpentine configuration.
26. The invention as in claim 15 wherein said barbed surfaces face inward.
27. The invention as in claim 15 wherein said barbed surfaces face outward.
28. The invention as in claim 15 wherein said first barbed surface has a different configuration than said second barbed surface.
29. The invention as in claim 3 wherein said first closure element includes a first web, a second web, a third web and a fourth web, said first barbed surface located on said first web, said second web includes a second barbed surface, said second barbed surface oriented at an angle of substantially 90° to said base, said third web includes a third barbed surface, and said fourth web includes a fourth barbed surface.
30. The invention as in claim 29 wherein said third web is parallel to said base.
31. The invention as in claim 29 wherein said third web is oriented at an angle greater than 0° relative to said base.
32. The invention as in claim 2 wherein said first closure element includes a base and said first barbed surface is substantially parallel to said base.
33. The invention as in claim 32 wherein said first barbed surface is integral with said base.
34. The invention as in claim 32 wherein said first barbed surface includes a plurality of saw teeth.
35. The invention as in claim 32 wherein said first barbed surface includes a plurality of protrusions.
36. The invention as in claim 32 wherein said second closure element includes a web and said first complementary surface is disposed along said web.
37. The invention as in claim 32 wherein said first closure element includes a second barbed surface.
38. The invention as in claim 37 wherein said second barbed surface is substantially parallel to said base.
39. The invention as in claim 37 wherein said second closure element includes a web and a second complementary surface along said web.
40. The invention as in claim 37 wherein said second barbed surface is oriented at an angle of substantially 90° to said base.
41. The invention as in claim 36 wherein said first complementary surface includes a barb.
42. A container comprising two opposed sidewalls and an interlocking fastening device, the fastening device including a first closure element secured to one of the sidewalls, the first closure element having a first barbed surface along a segment thereof, and a second closure element secured to the second sidewall, the second closure element including a first complementary surface along a segment thereof, said first complementary surface being in mated interlocking engagement with said first barbed surface in an occluded position, the surfaces providing ratcheting engagement when urged from an deoccluded position to the occluded position.
43. The invention as in claim 42 wherein said first closure element includes a base and said first barbed surface is oriented at an angle in the range of 0°-90° relative to said base.
44. The invention as in claim 43 wherein said first barbed surface is oriented at an angle of substantially 90° to said base.
45. The invention as in claim 44 wherein said first closure element includes a web and said first barbed surface is located on said web.
46. The invention as in claim 45 wherein said first barbed surface includes a plurality of hooks.
47. The invention as in claim 45 wherein said first barbed surface includes a plurality of saw teeth.
48. The invention as in claim 45 wherein said first barbed surface includes a plurality of protrusions.
49. The invention as in claim 45 wherein said first barbed surface has a serpentine configuration.
50. The invention as in claim 45 wherein said first complementary surface has a barb.
51. The invention as in claim 45 wherein said first complementary surface has a barbed surface.
52. The invention as in claim 51 wherein said barbed surfaces include a plurality of hooks.
53. The invention as in claim 51 wherein said barbed surfaces include a plurality of saw teeth.
54. The invention as in claim 51 wherein said barbed surfaces include a plurality of protrusions.
55. The invention as in claim 51 wherein said barbed surfaces have a serpentine configuration.
56. The invention as in claim 44 wherein said first closure element includes two webs and said first barbed surface is located on one of said webs and a second barbed surface is located on said other web.
57. The invention as in claim 56 wherein said barbed surfaces include a plurality of hooks.
58. The invention as in claim 56 wherein said barbed surfaces include a plurality of saw teeth.
59. The invention as in claim 56 wherein said barbed surfaces include a plurality of protrusions.
60. The invention as in claim 56 wherein said barbed surfaces have a serpentine configuration.
61. The invention as in Claim 56 wherein said first complementary surface has a barb.
62. The invention as in claim 56 wherein said first complementary surface has a barbed surface and said second closure element includes a second complementary surface, said second complementary surface has a barbed surface.
63. The invention as in claim 62 wherein said barbed surfaces include a plurality of hooks.
64. The invention as in claim 62 wherein said barbed surfaces include a plurality of saw teeth.
65. The invention as in claim 62 wherein said barbed surfaces include a plurality of protrusions.
66. The invention as in claim 62 wherein said barbed surfaces have a serpentine configuration.
67. The invention as in claim 56 wherein said barbed surfaces face inward.
68. The invention as in claim 56 wherein said barbed surfaces face outward.
69. The invention as in claim 56 wherein said first barbed surface has a different configuration than said second barbed surface.
70. The invention as in claim 44 wherein said first closure element includes a first web, a second web, a third web and a fourth web, said first barbed surface located on said first web, said second web includes a second barbed surface, said second barbed surface oriented at an angle of substantially 90° to said base, said third web includes a third barbed surface, and said fourth web includes a fourth barbed surface.
71. The invention as in claim 70 wherein said third web is parallel to said base.
72. The invention as in claim 70 wherein said third web is oriented at an angle greater than 0° relative to said base.
73. The invention as in claim 43 wherein said first closure element includes a base and said first barbed surface is substantially parallel to said base.
74. The invention as in claim 73 wherein said first barbed surface is integral with said base.
75. The invention as in claim 73 wherein said first barbed surface includes a plurality of saw teeth.
76. The invention as in claim 73 wherein said first barbed surface includes a plurality of protrusions.
77. The invention as in claim 73 wherein said second closure element includes a web and said first complementary surface is disposed along said web.
78. The invention as in claim 73 wherein said first closure element includes a second barbed surface.
79. The invention as in claim 78 wherein said second barbed surface is substantially parallel to said base.
80. The invention as in claim 78 wherein said second closure element includes a web and a second complementary surface along said web.
81. The invention as in claim 78 wherein said second barbed surface is oriented at an angle of substantially 90° to said base.
82. The invention as in claim 77 wherein said first complementary surface includes a barb.
Type: Application
Filed: Apr 26, 2004
Publication Date: Jan 12, 2006
Inventor: Michael Borchardt (Willowbrook, IL)
Application Number: 10/831,818
International Classification: B65D 33/16 (20060101);