CA2047926A1 - Neck finish for containers of rigid materials - Google Patents
Neck finish for containers of rigid materialsInfo
- Publication number
- CA2047926A1 CA2047926A1 CA 2047926 CA2047926A CA2047926A1 CA 2047926 A1 CA2047926 A1 CA 2047926A1 CA 2047926 CA2047926 CA 2047926 CA 2047926 A CA2047926 A CA 2047926A CA 2047926 A1 CA2047926 A1 CA 2047926A1
- Authority
- CA
- Canada
- Prior art keywords
- stretch
- lip
- neck
- cut
- downwardly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Abstract
ABSTRACT
Neck finishes suitable for containers formed of rigid materials are shaped to overcome problems which would otherwise occur if standard closures which perform satisfactorily with less rigid containers are used. One problem is that plugs (inner skirts) of closures are cut or shaved if they are oversize relative to the inner neck diameter. This problem is overcome by forming a chamfer or radius at the lead-in to the inside corner of the neck. A second problem ("ovality") occurs when the neck is not uniformly round; this problem is overcome by forming a cut-out section at the upper outer corner of the neck so that the maximum neck diameter engages the inside of the outer cap skirt below the top edge, thereby lessening outward distortion of the outer skirt.
Neck finishes suitable for containers formed of rigid materials are shaped to overcome problems which would otherwise occur if standard closures which perform satisfactorily with less rigid containers are used. One problem is that plugs (inner skirts) of closures are cut or shaved if they are oversize relative to the inner neck diameter. This problem is overcome by forming a chamfer or radius at the lead-in to the inside corner of the neck. A second problem ("ovality") occurs when the neck is not uniformly round; this problem is overcome by forming a cut-out section at the upper outer corner of the neck so that the maximum neck diameter engages the inside of the outer cap skirt below the top edge, thereby lessening outward distortion of the outer skirt.
Description
20~7~
NECK FINISH FOR CONTAINERS OF RIGID MATERIALS
BACKGROUND OF THE INVENTION
1. Field of the Invention. This lnvention relates to the neck finish (i.e., cross-sectional shape) of containers formed of relatively rigid materials such as polyvinyl chloride. Such neck finishes are formed to cooperate with standard push-on caps which were initially designed for use with less rigid materials such as polyolefins.
1~0 2. ~rior Art. Caps used with the neck finish of this invention such as those shown in U.S. Patent Nos.
4,676,389 and 4,484,687 as well as many variations thereof. Such caps have a top disk from wh~ch depends a 6ubstantially cylindrical outer skirt having at least i5 one locking bead on the inside surface thereof. The neck to which the present invention relates i5 formed on the exteriorwith locking beadswhich matewith lockingbeads on the cap. Many of these caps have tamper-evident features whereby the portion of the ~kirt carrying the lower locking bead is torn away, leaving a reclosure cap which may be pried off the neck and used to reseal the remaining contents of the container. Some of the caps used with the neck finish have an inner skirt or plug which fits the inside of the neck.
NECK FINISH FOR CONTAINERS OF RIGID MATERIALS
BACKGROUND OF THE INVENTION
1. Field of the Invention. This lnvention relates to the neck finish (i.e., cross-sectional shape) of containers formed of relatively rigid materials such as polyvinyl chloride. Such neck finishes are formed to cooperate with standard push-on caps which were initially designed for use with less rigid materials such as polyolefins.
1~0 2. ~rior Art. Caps used with the neck finish of this invention such as those shown in U.S. Patent Nos.
4,676,389 and 4,484,687 as well as many variations thereof. Such caps have a top disk from wh~ch depends a 6ubstantially cylindrical outer skirt having at least i5 one locking bead on the inside surface thereof. The neck to which the present invention relates i5 formed on the exteriorwith locking beadswhich matewith lockingbeads on the cap. Many of these caps have tamper-evident features whereby the portion of the ~kirt carrying the lower locking bead is torn away, leaving a reclosure cap which may be pried off the neck and used to reseal the remaining contents of the container. Some of the caps used with the neck finish have an inner skirt or plug which fits the inside of the neck.
2~
~ .
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Prior art containers for the most part have been made from relatively flexible materials such as polyolefins. Their lips having relatively sharp inner and outer peripheral corners. The outer corner engages the interior of the outer skirt of the cap promoting distortion of the skirt outwardly particularly when the cap is being used as a reclosure cap. The pliable polyolefin containers do not deform to the extent that the distortion of the closure becomes excessive.
The present invention overcomes some of the problems which occur when the less rigid polyolefin conta$ners are replaced with more rigid containers.
SUMMARY OF THE INVENTION
~ eretofore containers have been made of a relatively flexible polyolefin material wherein the lip deforms if an oversized plug seal is inserted into the orifice of the neck. The outer skirt of the cap fits over the upper locking bead of the neck and is disposed in a generally vertical position.
However, material~ which are substantially more rigid than polyolefin6, such as polyvinyl chloride create certain difficulties. ~he oversize plug of the closure is cut or ~haved by the sharp inner edge of the lip since the lip does not deform as much as if a less rigid material is used. The undercut of the lip, which is conventionally formed in less rigid containers and deforms when the plug is inserted, may not be formed with less resilient materials, which are typically manufactured with in~ected or pressed (ram-down) finishes.
35A ~econd problem with rigid container necks arises when such necks become exce sively oval shaped rather than round, In such cases, the locking bead on the 2~
exterior of the neck is forced outwardly in the areas of greatest radius, and this causes the outer cap skirt to be slanted outwardly-downwardly, even to 6uch an extent that the locking beads of the cap and neck do not inter-engage.
In accordance with the present invention, a cut-out i8 formed at the corner of the intersection of the lip of the neck and the locking bead. In such event the locking bead engages the inside of the neck spaced downwardly from the lip and hence the distortion o~ the outer skirt from vertical is considerably minimized.
In another feature of the invention, the lead-in or inner corner where the lip intersects the orifice of the neck is formed with a chamfer or radius. This facilitates insertion of the plug of the cap.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention:
FIGURE 1 is a fragmentary sectional view through a cap and container neck formed in accordance with this invention.
FIGURE 2 is a top plan view of the neck 6tructure.
FIGURE 3 i5 a view similar to FIG. 1 showing a neck which i6 distorted by ovality and illu6trates the relatively 6~all distortion of the outer 6kirt.
~ .
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Prior art containers for the most part have been made from relatively flexible materials such as polyolefins. Their lips having relatively sharp inner and outer peripheral corners. The outer corner engages the interior of the outer skirt of the cap promoting distortion of the skirt outwardly particularly when the cap is being used as a reclosure cap. The pliable polyolefin containers do not deform to the extent that the distortion of the closure becomes excessive.
The present invention overcomes some of the problems which occur when the less rigid polyolefin conta$ners are replaced with more rigid containers.
SUMMARY OF THE INVENTION
~ eretofore containers have been made of a relatively flexible polyolefin material wherein the lip deforms if an oversized plug seal is inserted into the orifice of the neck. The outer skirt of the cap fits over the upper locking bead of the neck and is disposed in a generally vertical position.
However, material~ which are substantially more rigid than polyolefin6, such as polyvinyl chloride create certain difficulties. ~he oversize plug of the closure is cut or ~haved by the sharp inner edge of the lip since the lip does not deform as much as if a less rigid material is used. The undercut of the lip, which is conventionally formed in less rigid containers and deforms when the plug is inserted, may not be formed with less resilient materials, which are typically manufactured with in~ected or pressed (ram-down) finishes.
35A ~econd problem with rigid container necks arises when such necks become exce sively oval shaped rather than round, In such cases, the locking bead on the 2~
exterior of the neck is forced outwardly in the areas of greatest radius, and this causes the outer cap skirt to be slanted outwardly-downwardly, even to 6uch an extent that the locking beads of the cap and neck do not inter-engage.
In accordance with the present invention, a cut-out i8 formed at the corner of the intersection of the lip of the neck and the locking bead. In such event the locking bead engages the inside of the neck spaced downwardly from the lip and hence the distortion o~ the outer skirt from vertical is considerably minimized.
In another feature of the invention, the lead-in or inner corner where the lip intersects the orifice of the neck is formed with a chamfer or radius. This facilitates insertion of the plug of the cap.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention:
FIGURE 1 is a fragmentary sectional view through a cap and container neck formed in accordance with this invention.
FIGURE 2 is a top plan view of the neck 6tructure.
FIGURE 3 i5 a view similar to FIG. 1 showing a neck which i6 distorted by ovality and illu6trates the relatively 6~all distortion of the outer 6kirt.
3~
FIGURE 4 i6 a ~ectional view of the neck used in FIGS. 1 and 3.
L7~ 6 FIGURE 5 is a view similar to FIG. 4 of a modified neck finish.
FIGUR~ 6 is a view similar to FIG. 4 of another neck finish.
PIGURES 7 and 8 are fragmentary vertical sectional views through prior art neck finishes.
FIGURE 9 is a 6chematic ~iew which should be compared with FIG. 3 to illustrate an advantage of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in con~unction with the preferred embodiments, it will be under6tood that they are not intended to limit the invention to those embodiments. On the contrary, the invention is intended to cover alternatives, modi~ication6 and equivalents, which may be included within the 6pirit and scope of the invention as defined by the appended claims.
Directing attention first to the structure of Figures 1-3, neck 11 has an inside orifice or throat 12 and an upper lip 13. In accordance with the present invention, a lead-in chamfer or radius 14 i5 formed at what would otherwise be the intersection of throat 12 and lip 13.
on the exterior of neck 11 6paced down from the lip 13 i8 a locking bead 16 having a top surface 17 and a bottom shoulder 18. As will be understood with reference to U.S. Patent Nos. 4,676,389 and 4,484,687, below the top locking bead 16 there i8 generally a second lockinq . .
', ,.~04~12G
bead which is engaged by the cap until such time as the lower portion of the cap skirt is torn away. Thereupon the upper portion of the cap becomes a reclosure cap, as is well understood in the art~ The cap 21 illustrated herein is essentially a reclosure cap, it being understood that the lower portion of the outer skirt which contains the lower locking bead has been torn away.
Cap 21 is formed with a top disX 22 from which lo depends an inner skirt or plug 23. In accordance with the present in~ention, the outer bottom edge 24 is slanted downwardly inwardly. When the cap 21 is applied to the neck 11, the lead-in 14 in cooperation with the slanted edge 24 ensures that the inner 6kirt 23 fits inside the throat 12 even though the neck 11 may have been distorted from a circular shape (i.e., is 6ub~ect to "ovality").
Also depending from top disk 22 is cylindrical outer skirt 26 which has an upper locking bead 27 spaced downwardly from the disk 22. Bead 27 has a downward inward slanted surface 28 and a downward outward slanted surface 29 which facilitates initial capping of the cap onto the neck and also facilitates removal of the reclosure cap 21. As shown in Figure 1 there i6 a bottom edge 31 to the cap 21, it being understood that the portion of the cap initially below edge 31 has been torn away.
The outer corner o~ bead 16 engages outer sklrt 26 at a contact point 33. The position o* contact point 33 is well below lip 13 because of the cut-out 32 formed above bead 16.
Thus directing attention to Figure 4 which iB a neck fin~sh substantially similar to that shown in Figures 1 and 3, the cut-out 32 occurs in that the lip 13 has 6 2~1~7~32 an outside edge materially smaller than the diameter of the outside edge of the bead 16.
Figure 5 ~hows a modification of the structure of Figure 4 in that the cut-out notch 37 instead of having an upper vertical edge has a stretch slanted inwardly-downwardly.
Directing attention to Figure 6~ the upper outex edge of the neck below lip 13b is formed with a cylindrical vertical stretch 41 which terminates in a flange 42 having substantially horizontal top andbottom surfaces 43,44.
15Advantages of the present invention will be shown by comparison with examples of the prior art illustrated in Figures 7, 8 and 9. Figure 7 illustrates a common type of neck finish used in blow-molded polyolefin container 45. Thus lip 46 has an inner ed~e 47 and below 20edge 47 i8 an undercut 48 which makes the lip 46 guite flexible. Formation of the undercut 48 is relatively easy for blow-molded bottle6 but is difficult or impossible when the bottle finish is formed by in~ection or a ram-down pressed operation. The neck finish of 25Figure 7 has an outside cylindrical portion 49, the corner 51 being rounded and the lower end of the cylindrical portion 49 terminating in a relatively horizontal inward directed shoulder 52. The caps shown in Figures 1 and 3 are designed for closing neck finishes 30such as ~hown in Figure 7.
Figure 8 shows another prior art neck structure 55 of a relatively rigid material which is formed by injection or ram-down operation. Thus there is a solid 35flange 56 which has an inside surfAce 57 functioning as the throat of the neck and a horizontal broad top lip 58. Outer cylindrical surface 59 terminates on itslower ' :
end in a horizontal inwardly directed 6houlder 61 which in turn is connected to the lower neck 62. Structures such as shown in Figure 8 have certain problems. First, excessive mass results in extended proce6s times, S material waste and difficult dimensional control.
Second, the absence of a lead-in chamfer results in difficult plug insertion and capping. Third, extension of the top 6urface outward to the outside diameter leads to exaggerated distortion of the closure from bottle ovality resulting from process or use.
In accordance with the present invention, the cut-out ~ection 32 not only saves mass but has the important additional function of accommodating bottle distortions.
Directing attention to Figure 9, it will be seen that with a neck shape having a solid flange 56 6uch as that shown in Figure 8, the point of contact 33 causes the outer skirt to slant downward outward 60 that the bead 27 does not even engage the flange 56. Although Figure 9 is somewhat distorted for the purpose of illustration, by comparison wlth Figure 3 it will be seen that even though the distortion of the bead 16 i8 a~ great as the flange 56, the outer skirt 26 of Figure 3 is much more nearly vertical and there is an inter-engaging of the bead 16 with the bead 27 which maintains the reclosure cap 21 on the neck ll against unintentional removal.
Therefore the cut-out 32 results in less cap distortion because contact point 33 is lower. The cut-out allows the closure to remain securely fastened to the neck through a wide range o~ finieh ovalities. It will be understood that such ovality may result from process, shock "impacts," or compression during consumer use.
It i6 impor~ant that the lip 13 be suffic$ently wide 80 that if, instead of an inner skirt or plug 23, a seal is effected by induction heating oftransfer foils, there 8 ~ ~ ~7 is sufficient annular area of lip 13 to ensure consistent 6ealinq with the foil.
The foregoing descriptions of specific embodiments of thepresent invention havebeenpresented forpurposes of illustration and descr$ption. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching~
The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalenta.
FIGURE 4 i6 a ~ectional view of the neck used in FIGS. 1 and 3.
L7~ 6 FIGURE 5 is a view similar to FIG. 4 of a modified neck finish.
FIGUR~ 6 is a view similar to FIG. 4 of another neck finish.
PIGURES 7 and 8 are fragmentary vertical sectional views through prior art neck finishes.
FIGURE 9 is a 6chematic ~iew which should be compared with FIG. 3 to illustrate an advantage of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in con~unction with the preferred embodiments, it will be under6tood that they are not intended to limit the invention to those embodiments. On the contrary, the invention is intended to cover alternatives, modi~ication6 and equivalents, which may be included within the 6pirit and scope of the invention as defined by the appended claims.
Directing attention first to the structure of Figures 1-3, neck 11 has an inside orifice or throat 12 and an upper lip 13. In accordance with the present invention, a lead-in chamfer or radius 14 i5 formed at what would otherwise be the intersection of throat 12 and lip 13.
on the exterior of neck 11 6paced down from the lip 13 i8 a locking bead 16 having a top surface 17 and a bottom shoulder 18. As will be understood with reference to U.S. Patent Nos. 4,676,389 and 4,484,687, below the top locking bead 16 there i8 generally a second lockinq . .
', ,.~04~12G
bead which is engaged by the cap until such time as the lower portion of the cap skirt is torn away. Thereupon the upper portion of the cap becomes a reclosure cap, as is well understood in the art~ The cap 21 illustrated herein is essentially a reclosure cap, it being understood that the lower portion of the outer skirt which contains the lower locking bead has been torn away.
Cap 21 is formed with a top disX 22 from which lo depends an inner skirt or plug 23. In accordance with the present in~ention, the outer bottom edge 24 is slanted downwardly inwardly. When the cap 21 is applied to the neck 11, the lead-in 14 in cooperation with the slanted edge 24 ensures that the inner 6kirt 23 fits inside the throat 12 even though the neck 11 may have been distorted from a circular shape (i.e., is 6ub~ect to "ovality").
Also depending from top disk 22 is cylindrical outer skirt 26 which has an upper locking bead 27 spaced downwardly from the disk 22. Bead 27 has a downward inward slanted surface 28 and a downward outward slanted surface 29 which facilitates initial capping of the cap onto the neck and also facilitates removal of the reclosure cap 21. As shown in Figure 1 there i6 a bottom edge 31 to the cap 21, it being understood that the portion of the cap initially below edge 31 has been torn away.
The outer corner o~ bead 16 engages outer sklrt 26 at a contact point 33. The position o* contact point 33 is well below lip 13 because of the cut-out 32 formed above bead 16.
Thus directing attention to Figure 4 which iB a neck fin~sh substantially similar to that shown in Figures 1 and 3, the cut-out 32 occurs in that the lip 13 has 6 2~1~7~32 an outside edge materially smaller than the diameter of the outside edge of the bead 16.
Figure 5 ~hows a modification of the structure of Figure 4 in that the cut-out notch 37 instead of having an upper vertical edge has a stretch slanted inwardly-downwardly.
Directing attention to Figure 6~ the upper outex edge of the neck below lip 13b is formed with a cylindrical vertical stretch 41 which terminates in a flange 42 having substantially horizontal top andbottom surfaces 43,44.
15Advantages of the present invention will be shown by comparison with examples of the prior art illustrated in Figures 7, 8 and 9. Figure 7 illustrates a common type of neck finish used in blow-molded polyolefin container 45. Thus lip 46 has an inner ed~e 47 and below 20edge 47 i8 an undercut 48 which makes the lip 46 guite flexible. Formation of the undercut 48 is relatively easy for blow-molded bottle6 but is difficult or impossible when the bottle finish is formed by in~ection or a ram-down pressed operation. The neck finish of 25Figure 7 has an outside cylindrical portion 49, the corner 51 being rounded and the lower end of the cylindrical portion 49 terminating in a relatively horizontal inward directed shoulder 52. The caps shown in Figures 1 and 3 are designed for closing neck finishes 30such as ~hown in Figure 7.
Figure 8 shows another prior art neck structure 55 of a relatively rigid material which is formed by injection or ram-down operation. Thus there is a solid 35flange 56 which has an inside surfAce 57 functioning as the throat of the neck and a horizontal broad top lip 58. Outer cylindrical surface 59 terminates on itslower ' :
end in a horizontal inwardly directed 6houlder 61 which in turn is connected to the lower neck 62. Structures such as shown in Figure 8 have certain problems. First, excessive mass results in extended proce6s times, S material waste and difficult dimensional control.
Second, the absence of a lead-in chamfer results in difficult plug insertion and capping. Third, extension of the top 6urface outward to the outside diameter leads to exaggerated distortion of the closure from bottle ovality resulting from process or use.
In accordance with the present invention, the cut-out ~ection 32 not only saves mass but has the important additional function of accommodating bottle distortions.
Directing attention to Figure 9, it will be seen that with a neck shape having a solid flange 56 6uch as that shown in Figure 8, the point of contact 33 causes the outer skirt to slant downward outward 60 that the bead 27 does not even engage the flange 56. Although Figure 9 is somewhat distorted for the purpose of illustration, by comparison wlth Figure 3 it will be seen that even though the distortion of the bead 16 i8 a~ great as the flange 56, the outer skirt 26 of Figure 3 is much more nearly vertical and there is an inter-engaging of the bead 16 with the bead 27 which maintains the reclosure cap 21 on the neck ll against unintentional removal.
Therefore the cut-out 32 results in less cap distortion because contact point 33 is lower. The cut-out allows the closure to remain securely fastened to the neck through a wide range o~ finieh ovalities. It will be understood that such ovality may result from process, shock "impacts," or compression during consumer use.
It i6 impor~ant that the lip 13 be suffic$ently wide 80 that if, instead of an inner skirt or plug 23, a seal is effected by induction heating oftransfer foils, there 8 ~ ~ ~7 is sufficient annular area of lip 13 to ensure consistent 6ealinq with the foil.
The foregoing descriptions of specific embodiments of thepresent invention havebeenpresented forpurposes of illustration and descr$ption. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching~
The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalenta.
Claims (12)
1. A container neck having a top lip, an inside throat, and a peripheral external locking bead at the top of said neck characterized in that the outer corner where said lip and the outer surface of said external locking bead would otherwise intersect is formed with a cut-out, the area of maximum outer protrusion of said external locking bead being spaced downward from said lip and below said cut-out.
2. A container neck according to claim 1 in which said cut-out is formed with a substantially vertical surface extending downward from said lip and an outwardly downwardly slanted surface extending outwardly-downwardly to adjacent said area of maximum outer protrusion.
3. A container neck according to claim 1 in which said cut-out is formed by a first stretch slanting downwardly-inwardly and a second stretch below said first stretch slanting downwardly-outwardly.
4. A container neck according to claim 3 in which the upper-inner corner of said neck slants in a third stretch substantially parallel to said first stretch from said lip downwardly-inwardly to said throat.
5. A container neck according to claim 1 in which said cut-out is formed by a first stretch extending substantially vertically downward from said lip and a substantially horizontal second stretch extending outward from the bottom edge of said first stretch.
6. A container neck according to claim 1 in which the upper inner edge of said lip is formed with a chamfer.
7. In combination, a cap having a top disk, a peripheral outer skirt depending from said disk and an internal locking bead on said outer skirt spaced downward from said disk and a container neck having a top lip, an inside throat, and a peripheral external locking bead adjacent the top of said neck, the outer corner where said lip and the outer surface of said external locking bead would otherwise intersect being formed with cut-out, the area of maximum outer protrusion of said external locking bead being spaced downward from said lip and below said cut-out, said area of maximum protrusion of said external locking bead contacting said inner skirt immediately above said internal locking bead.
8. A combination according to claim 7 in which said cut-out is formed with a substantially vertical first stretch extending downward from said lip and an outwardly-downwardly slanted second stretch extending outwardly-downwardly to adjacent said area of maximum outer protrusion.
9. A combination according to claim 7 in which said cut-out is formed by a first stretch slanting downwardly-inwardly and a second stretch below said first stretch slanting downwardly-outwardly.
10. A combination according to claim 9 in which the upper-inner corner of said neck slants in a third stretch substantially parallel to said first stretch from said lip downwardly-inwardly to said throat.
11. A combination according to claim 7 in which said cut-out is formed by a first stretch extending substantially vertically downward from said lip and a substantially horizontal second stretch extending outward from the bottom edge of said first stretch.
12. A combination according to claim 7 in which the upper inner edge of said lip is formed with a chamfer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US56463090A | 1990-08-08 | 1990-08-08 | |
| US564,630 | 1990-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2047926A1 true CA2047926A1 (en) | 1992-02-09 |
Family
ID=24255264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2047926 Abandoned CA2047926A1 (en) | 1990-08-08 | 1991-07-25 | Neck finish for containers of rigid materials |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2047926A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998036985A1 (en) | 1997-02-20 | 1998-08-27 | Sheffler Robert J | Hermetically-sealed container and closure construction |
-
1991
- 1991-07-25 CA CA 2047926 patent/CA2047926A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998036985A1 (en) | 1997-02-20 | 1998-08-27 | Sheffler Robert J | Hermetically-sealed container and closure construction |
| EP1042182A1 (en) * | 1997-02-20 | 2000-10-11 | Robert J. Sheffler | Hermetically-sealed container and closure construction |
| EP1042182A4 (en) * | 1997-02-20 | 2001-05-16 | Robert J Sheffler | Hermetically-sealed container and closure construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |