CA1178247A - Bottle-cap and pouring-fitment assembly - Google Patents
Bottle-cap and pouring-fitment assemblyInfo
- Publication number
- CA1178247A CA1178247A CA000401288A CA401288A CA1178247A CA 1178247 A CA1178247 A CA 1178247A CA 000401288 A CA000401288 A CA 000401288A CA 401288 A CA401288 A CA 401288A CA 1178247 A CA1178247 A CA 1178247A
- Authority
- CA
- Canada
- Prior art keywords
- flange
- cap
- bottle
- fitment
- pouring
- 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.)
- Expired
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Abstract
F. 2033 BOTTLE-CAP AND POURING-FITMENT ASSEMBLY
ABSTRACT OF THE DISCLOSURE
The invention contemplates a bottle cap and a pouring fitment which are assembled to each other before being attached to a bottle. The pouring fit-ment has an upper tubular part having a pouring-lip formation at its upper end and a radially outward seating flange at its lower end, the latter having provision for engagement over and retention by the upper end of the bottle neck. Integral interior formations of the cap include an inner annular flange which has telescoping frictional engagement with the bore of the upper tubular part of the pouring fitment, and a stop-abutment formation within the cap compresses the seating flange to the end of the bottle neck when the cap is in tight threaded engagement with the bottle neck. No part of the fitment extends within the bottle neck, but a pattern of radial struts within the base end of the tubular part of the fitment provides enhanced stiffness to augment the frictional engagement and to provide protection against rodent access to bottle contents, should the cap fail to have been replaced through careless use.
ABSTRACT OF THE DISCLOSURE
The invention contemplates a bottle cap and a pouring fitment which are assembled to each other before being attached to a bottle. The pouring fit-ment has an upper tubular part having a pouring-lip formation at its upper end and a radially outward seating flange at its lower end, the latter having provision for engagement over and retention by the upper end of the bottle neck. Integral interior formations of the cap include an inner annular flange which has telescoping frictional engagement with the bore of the upper tubular part of the pouring fitment, and a stop-abutment formation within the cap compresses the seating flange to the end of the bottle neck when the cap is in tight threaded engagement with the bottle neck. No part of the fitment extends within the bottle neck, but a pattern of radial struts within the base end of the tubular part of the fitment provides enhanced stiffness to augment the frictional engagement and to provide protection against rodent access to bottle contents, should the cap fail to have been replaced through careless use.
Description
BOTTLE-CAP AND POURING-FITMENT ASSEMBLY
BAC~GROUND OF THE INVENTION
The invention relates to a bottle-cap and pouring-fitment assembly having improved pouring, sealing and other features.
Bottles for dispensing liquids are frequently provided with a pouring-spout fitment located within the neck of the bottle to improve the flow and to prevent spilling and dripping of the contents. Such fitments usually fit over and engage the edge of the neck of the bottle and have a~ annular pouring lip.
Caps for such bottles are usually provided with internal screw threads which engagé external screw threads on the neck of the bottle.
:1~78~
U. S. Patent No. 3,311,275 describes one variety of such fitments wherein the fitment and -the cap are separately assembled to a bottle, and U. S. Patent No. 3,693,847 describes another S variety wherein the fitment and the cap are frictionally preassembled to each other, so that a single operation can accomplish permanent assembly of the fitment to the bottle and releasable threaded assembly of the cap to the bottle.
Fitments of the character indicated extend within the bottle neck and are particularly suited for the dispensing of low-viscosity liquids, such as alcoholic liquors. However, they inheren-tly trap and therefore do not dispense a residual ~uantity of the bottle con-tents, and they are inherently not suited for the dispensing of higher-viscosity liquids, such as cooking or salad oils.
Furthermore, containers now used for such oils are prone to rodent access, should a closure fail to be properly replaced after a dispensing use.
BRIEF STATEMENT OF THE INVENTION
It is an object of the invention to provide an improved bottle-cap and pouring-fitment assembly of the character indicated.
It is a specific object to meet the above object for the case of bottles containing higher-viscosity contents such an an oil of the character indicated.
Another specific object is to provide anti-rodent protection in a container of the character indicated.
~7~247 A general ohject is to achieve the above objects with relatively simple, foolproof structure having superior pouring and sealing properties, and having the ability to fully dis-pense liquid contents of the bottle.
The invention achieves t,he foregoi.ng objects and other features in a preassembled cap and fitment construction wherein no part of the fitment extends within the bottle, but rather, the pouring fitment is characterized by an upper tubular portion with a pouring lip at its upper end and with a radially outward seating flange at its lower end, the seating flange having permanent-retention engagement with the upper en~ o~ th~! bottl~
neck. Integral interior formation~ of the cap include an innor annular flange which has telescoping frictional engag~m~nt ~ith the bore of the tubular port.ion o~ the fitment, and a stop-~ abutment formation within the cap compresses the seating flange `~ to the end of the bottle neck when the cap is in tight threaded ~ engagement with the bottle neck. A pattern of radial struts ,~ within the base end of the tubular portion of the fitment ~ provides enhanced stiffness to augment the frictional engagement .~ 20 and to provide protection against rodent access to bottle con-: tents, should the cap fail to have been replaced, by reasons of carelessness.
' More particularly the invention provides a bottle cap and pouring fitment assembly, comprising a bottle cap having a top web and an outer annular flange depending therefrom, said flange having inner thread formations for selective engagement to an externally threaded bottle, inner and intermediate integral annular flanges depending from said web in radially spaced concentric relation with the axis of the thread formations of said outer flange; a pouring fitment comprising an upper tubular ~ - 3 _ ~78'~17 portion having a radially outward pouring lip at its upper end and a radially outward seating flange at its lower end, an outer annular skirt depending from the ou-ter edge of said seat-ing flange and having an inner bead formation for self-retained engagement over an externally beaded end of the bottle, -the outer diameter of said outer annular skirt hav:ing radial clear-ance with the outer annular flange of said cap, and angularly spaced radial-strut formations within the :lower end of said tubular portion; the upper tubular portion of the fitment being received in the space between said inner and intermediate flanges of the capl the external surace of said inner flange of the cap having frictional telescoping engagement with the inner surface of the upper tubular portion of the fitment throughout the extent o its axial overlap therewith, and the respective axial lengths o said inner and intermediate flanges being such that direct circumferentially continuous axial abutment of said intermediate flange with said seating flange will limit threaded advance of the cap to the bottle prior to axial abutment of said inner flange with said radial-strut formations.
DETAILED_DESCRIPTION
The invention will be described for a preferred form, in conjunction with the accompanying drawings, in which:
- 3a-!"
~. . , .~
Fig. 1 is an enlarged view in elevation of a cap and fitment of the invention in secured relation to a threaded bottle neck, the view being partly broken and in longitudinal section to reveal coacting elements;
Fig. 2 is a.vertical sectional view of the cap of Fig. l;
Fig. 3 is a vertical sectional view of the fitment of Fig. l;
Fig. 4 is a bottom view of the fitment of Fig. 3, the sectional line of Fig. 3 being shown at 3-3 in Fig. 4;
Fig. 5 is a fragmentary view, similar to the sectional portiorl of Fig. 1, to show a modification;
and Fig. 5A is an enlarged fragmen-tary sec-tional view to show greater detail for a part of Fig. S.
In Fig. 1, a cap 10 has an in-ternally threaded outer flange or skirt 11 securely engaged to an external thread 12 on the neck 13 of a bottle 14. The threaded advance of this engagement is limited by a direct circum-ferentially continuous axial abutment, involving compres-sion of a radially outward seating flange 15 of a fitment 16; the compression is between the upper axial end of bottle 14 and an abutment-stop formation }7 which is an integral inner part of cap 10.
More specifically, and referring additionally to Fig. 2, the abutment-stop formation 17 is shown as an annular flange integrally formed with and depending from the web 18 which defines the upper closure wall of cap 10.
Another annular flange 19 depends integrally from web 18, ~ ~7~ 7 in radially spaced relation within flange 17, both flanges 17 and l9 being concentric wi.th the axis of the helix of the thread formation in skirt ll.
Further specifically, and referring addition-ally to Figs. 3 and 4, the fi-tment 16 is seen to comprise an outer dependent integral skirt 20 with an internal bead formation 21 which has self-retain-ing engagement over a circumferential end bead 22 (Fig. 1) of the bottle neck 13. Fitment 16 further integrally includes an upper tubular portion 23 which projects upwardly from the seating flange 15 and which has a circumferentially continuous drip-resis-tant outward lip 24 at its upper end. As seen in Fig. ]., the radial width of lip 24 ma~ be less than the space between cap flanges 17-l9, but the outer surface of flange 19 and the inner surface of :~ tubular portion 23 have frictional telescoping engage-ment. Preferably, these frictionally engaging surfaces are slightly tapered, the inner telescope surface of tubular portion 23 being convergent downward, and the outer telescope surface of inner flange 19 being also convergent downward; the dimensions and proportions of these tapers are such that frictional engagement develops with increasing magnitude in the course of flange l9 entry into tubular portion 23.
Still further, the fitment 16 is shown to comprise a pattern of angularly spaced integral radial struts 25 at the base or seating end of tubular portion 23. The nature of the pattern and the number of struts 25 will depend on the size of the openings defined 1~7~3~47 therebetween, but the openings are large enough to permit proper flow of dispensed liquid, yet small enough to deny rodent access. Preerably, the axial extent ~ of struts 25 exeeds the thick-ness of seating flange 15 so that struts 25 mayprovide a degree of enhanced stiffening of the base end of tubular portion 23, thereby improving the permanence and reliability of the described frictional engagement.
E'inally! the upper surface of seating flange 15 is shown with an integral circumferentially continuous axially upward ridge 26 withi~ the locus of radial register with the intermediate or abutment flan~e 17. This ridge 26 will be understood to be sufficiently yieldable under compression Erom flange 17 that both secure torsional friction and circum-ferentially continuous seal action are there developed, when cap 10 is in secured position on neck 13. It will be understood that in this secured relation, the relative axial extents of flanges 17 and 19 will assure direct axial compression only via 1ange 17, with flange 19 having preferably no contact with struts 25.
It will be understood that proper coaction of parts 10-16 requires a cer-tain difference in their stiffness or compliance properties. Preferably each of these parts is a single product of injection molding of plastic. And present preference is for the use of polypropylene, the stiffer material, for cap 10, and for the use of polyethylene, the more yieldable material, for fitment 16.
In practice, the parts 10 and 16 are separately molded in production quantity, and they are preassembled with retained frictional engagement at telescoped overlap of formations 19 and 23. Each such preassembly is applied to the neck of a filled bottle by conventional handling machinery with capability of imparting threaded engagement, such manipu]ation being favoured by the downwardly divergent taper shown for cap s`.~irt 11 and by the flutings shown on the outer surface of shirt 11. At conclusion of the threaded advance, bead 21 will have snapped over the neck bead 22, to establish permanently retained assembly of fitment 16 to neck 13; as is apparent from Figure 1, a radial clearance exists between the outer diame-ter of -the skirt 20 and the base of cap skirt 11, thus permit-ting the transient deformation involved in itment bead 21 snapping over the neck bead 22. Thereafter, cap unthreading disengages the cap from the fitment, and liquid contents are dispensed without drip, via lip 24. To recap the bottle, inner flange 19 develops first a liquid-clearing and circumferentially spreading wipe action with the outer end of tubular portion 23, and as the telescoping fit progresses so also does the degree of mutual compression and sealing effectiveness between these wiping surfaces. ~nd even if a drop of liquid should remain at lip 24 in the course of completing a closure, the direct compressional abutment at 17-26 assures against leakage. It should also be observed that since intermediate flange 17 provides a dam against loss of such liquid as may have adhered to walls of the inner volume defined by flange 19; this of course assumes the un-likely event that the bottle 14 was stored on its side until just before use, and it further assumes that cap 10 was placed upside down (i.e., web-side down) while dispensing liquid contents.
~17~;~47 Since no part of the fitment 16 extends wi-thin the bo-ttle neck, there is no way ~o trap undispensed liquid. Therefore the described construction enables ull dispensing of bottle contents.
While the irivention has been descr:Lbed in detail for a preferred form, it will be understood that modi-fications may be ~ade without departing from the scope of the invention. For example, and as shown specifi-cally in Figs. 5 and 5A, the flange 17 which is an integral part of the cap 10 (of stiffer material) may be integrally formed at its lower end face wi-th two concentric downwardly projecting ribs 17, radially spaced to the extent ~R, and having circumerentially extending indenting contact with the flat upper surface lS o the seating ~lange 15 of fitment 16 (o~ the more yieldable material). The thickness of the flange 17 of Fig. 5 should be sufficient for spacing ~ R to enable such self-stabilizing axial loading of the double seal at ribs 17' that no leakage can occur, for a closed and filled container. As shown in Fig. 5A, the preferred contouring of ribs 17' is as convergent cones at +
approximately 45 to the longitudinal axis of the closure, and having a gently rounded apex at the region of rib (17') contact with the seating flange 15; for a household-size container closure, the axial extent of ribs 17' may be in the order of 0.005 inch, and the rounded apex in each case may be of 0.002 inch radius.
BAC~GROUND OF THE INVENTION
The invention relates to a bottle-cap and pouring-fitment assembly having improved pouring, sealing and other features.
Bottles for dispensing liquids are frequently provided with a pouring-spout fitment located within the neck of the bottle to improve the flow and to prevent spilling and dripping of the contents. Such fitments usually fit over and engage the edge of the neck of the bottle and have a~ annular pouring lip.
Caps for such bottles are usually provided with internal screw threads which engagé external screw threads on the neck of the bottle.
:1~78~
U. S. Patent No. 3,311,275 describes one variety of such fitments wherein the fitment and -the cap are separately assembled to a bottle, and U. S. Patent No. 3,693,847 describes another S variety wherein the fitment and the cap are frictionally preassembled to each other, so that a single operation can accomplish permanent assembly of the fitment to the bottle and releasable threaded assembly of the cap to the bottle.
Fitments of the character indicated extend within the bottle neck and are particularly suited for the dispensing of low-viscosity liquids, such as alcoholic liquors. However, they inheren-tly trap and therefore do not dispense a residual ~uantity of the bottle con-tents, and they are inherently not suited for the dispensing of higher-viscosity liquids, such as cooking or salad oils.
Furthermore, containers now used for such oils are prone to rodent access, should a closure fail to be properly replaced after a dispensing use.
BRIEF STATEMENT OF THE INVENTION
It is an object of the invention to provide an improved bottle-cap and pouring-fitment assembly of the character indicated.
It is a specific object to meet the above object for the case of bottles containing higher-viscosity contents such an an oil of the character indicated.
Another specific object is to provide anti-rodent protection in a container of the character indicated.
~7~247 A general ohject is to achieve the above objects with relatively simple, foolproof structure having superior pouring and sealing properties, and having the ability to fully dis-pense liquid contents of the bottle.
The invention achieves t,he foregoi.ng objects and other features in a preassembled cap and fitment construction wherein no part of the fitment extends within the bottle, but rather, the pouring fitment is characterized by an upper tubular portion with a pouring lip at its upper end and with a radially outward seating flange at its lower end, the seating flange having permanent-retention engagement with the upper en~ o~ th~! bottl~
neck. Integral interior formation~ of the cap include an innor annular flange which has telescoping frictional engag~m~nt ~ith the bore of the tubular port.ion o~ the fitment, and a stop-~ abutment formation within the cap compresses the seating flange `~ to the end of the bottle neck when the cap is in tight threaded ~ engagement with the bottle neck. A pattern of radial struts ,~ within the base end of the tubular portion of the fitment ~ provides enhanced stiffness to augment the frictional engagement .~ 20 and to provide protection against rodent access to bottle con-: tents, should the cap fail to have been replaced, by reasons of carelessness.
' More particularly the invention provides a bottle cap and pouring fitment assembly, comprising a bottle cap having a top web and an outer annular flange depending therefrom, said flange having inner thread formations for selective engagement to an externally threaded bottle, inner and intermediate integral annular flanges depending from said web in radially spaced concentric relation with the axis of the thread formations of said outer flange; a pouring fitment comprising an upper tubular ~ - 3 _ ~78'~17 portion having a radially outward pouring lip at its upper end and a radially outward seating flange at its lower end, an outer annular skirt depending from the ou-ter edge of said seat-ing flange and having an inner bead formation for self-retained engagement over an externally beaded end of the bottle, -the outer diameter of said outer annular skirt hav:ing radial clear-ance with the outer annular flange of said cap, and angularly spaced radial-strut formations within the :lower end of said tubular portion; the upper tubular portion of the fitment being received in the space between said inner and intermediate flanges of the capl the external surace of said inner flange of the cap having frictional telescoping engagement with the inner surface of the upper tubular portion of the fitment throughout the extent o its axial overlap therewith, and the respective axial lengths o said inner and intermediate flanges being such that direct circumferentially continuous axial abutment of said intermediate flange with said seating flange will limit threaded advance of the cap to the bottle prior to axial abutment of said inner flange with said radial-strut formations.
DETAILED_DESCRIPTION
The invention will be described for a preferred form, in conjunction with the accompanying drawings, in which:
- 3a-!"
~. . , .~
Fig. 1 is an enlarged view in elevation of a cap and fitment of the invention in secured relation to a threaded bottle neck, the view being partly broken and in longitudinal section to reveal coacting elements;
Fig. 2 is a.vertical sectional view of the cap of Fig. l;
Fig. 3 is a vertical sectional view of the fitment of Fig. l;
Fig. 4 is a bottom view of the fitment of Fig. 3, the sectional line of Fig. 3 being shown at 3-3 in Fig. 4;
Fig. 5 is a fragmentary view, similar to the sectional portiorl of Fig. 1, to show a modification;
and Fig. 5A is an enlarged fragmen-tary sec-tional view to show greater detail for a part of Fig. S.
In Fig. 1, a cap 10 has an in-ternally threaded outer flange or skirt 11 securely engaged to an external thread 12 on the neck 13 of a bottle 14. The threaded advance of this engagement is limited by a direct circum-ferentially continuous axial abutment, involving compres-sion of a radially outward seating flange 15 of a fitment 16; the compression is between the upper axial end of bottle 14 and an abutment-stop formation }7 which is an integral inner part of cap 10.
More specifically, and referring additionally to Fig. 2, the abutment-stop formation 17 is shown as an annular flange integrally formed with and depending from the web 18 which defines the upper closure wall of cap 10.
Another annular flange 19 depends integrally from web 18, ~ ~7~ 7 in radially spaced relation within flange 17, both flanges 17 and l9 being concentric wi.th the axis of the helix of the thread formation in skirt ll.
Further specifically, and referring addition-ally to Figs. 3 and 4, the fi-tment 16 is seen to comprise an outer dependent integral skirt 20 with an internal bead formation 21 which has self-retain-ing engagement over a circumferential end bead 22 (Fig. 1) of the bottle neck 13. Fitment 16 further integrally includes an upper tubular portion 23 which projects upwardly from the seating flange 15 and which has a circumferentially continuous drip-resis-tant outward lip 24 at its upper end. As seen in Fig. ]., the radial width of lip 24 ma~ be less than the space between cap flanges 17-l9, but the outer surface of flange 19 and the inner surface of :~ tubular portion 23 have frictional telescoping engage-ment. Preferably, these frictionally engaging surfaces are slightly tapered, the inner telescope surface of tubular portion 23 being convergent downward, and the outer telescope surface of inner flange 19 being also convergent downward; the dimensions and proportions of these tapers are such that frictional engagement develops with increasing magnitude in the course of flange l9 entry into tubular portion 23.
Still further, the fitment 16 is shown to comprise a pattern of angularly spaced integral radial struts 25 at the base or seating end of tubular portion 23. The nature of the pattern and the number of struts 25 will depend on the size of the openings defined 1~7~3~47 therebetween, but the openings are large enough to permit proper flow of dispensed liquid, yet small enough to deny rodent access. Preerably, the axial extent ~ of struts 25 exeeds the thick-ness of seating flange 15 so that struts 25 mayprovide a degree of enhanced stiffening of the base end of tubular portion 23, thereby improving the permanence and reliability of the described frictional engagement.
E'inally! the upper surface of seating flange 15 is shown with an integral circumferentially continuous axially upward ridge 26 withi~ the locus of radial register with the intermediate or abutment flan~e 17. This ridge 26 will be understood to be sufficiently yieldable under compression Erom flange 17 that both secure torsional friction and circum-ferentially continuous seal action are there developed, when cap 10 is in secured position on neck 13. It will be understood that in this secured relation, the relative axial extents of flanges 17 and 19 will assure direct axial compression only via 1ange 17, with flange 19 having preferably no contact with struts 25.
It will be understood that proper coaction of parts 10-16 requires a cer-tain difference in their stiffness or compliance properties. Preferably each of these parts is a single product of injection molding of plastic. And present preference is for the use of polypropylene, the stiffer material, for cap 10, and for the use of polyethylene, the more yieldable material, for fitment 16.
In practice, the parts 10 and 16 are separately molded in production quantity, and they are preassembled with retained frictional engagement at telescoped overlap of formations 19 and 23. Each such preassembly is applied to the neck of a filled bottle by conventional handling machinery with capability of imparting threaded engagement, such manipu]ation being favoured by the downwardly divergent taper shown for cap s`.~irt 11 and by the flutings shown on the outer surface of shirt 11. At conclusion of the threaded advance, bead 21 will have snapped over the neck bead 22, to establish permanently retained assembly of fitment 16 to neck 13; as is apparent from Figure 1, a radial clearance exists between the outer diame-ter of -the skirt 20 and the base of cap skirt 11, thus permit-ting the transient deformation involved in itment bead 21 snapping over the neck bead 22. Thereafter, cap unthreading disengages the cap from the fitment, and liquid contents are dispensed without drip, via lip 24. To recap the bottle, inner flange 19 develops first a liquid-clearing and circumferentially spreading wipe action with the outer end of tubular portion 23, and as the telescoping fit progresses so also does the degree of mutual compression and sealing effectiveness between these wiping surfaces. ~nd even if a drop of liquid should remain at lip 24 in the course of completing a closure, the direct compressional abutment at 17-26 assures against leakage. It should also be observed that since intermediate flange 17 provides a dam against loss of such liquid as may have adhered to walls of the inner volume defined by flange 19; this of course assumes the un-likely event that the bottle 14 was stored on its side until just before use, and it further assumes that cap 10 was placed upside down (i.e., web-side down) while dispensing liquid contents.
~17~;~47 Since no part of the fitment 16 extends wi-thin the bo-ttle neck, there is no way ~o trap undispensed liquid. Therefore the described construction enables ull dispensing of bottle contents.
While the irivention has been descr:Lbed in detail for a preferred form, it will be understood that modi-fications may be ~ade without departing from the scope of the invention. For example, and as shown specifi-cally in Figs. 5 and 5A, the flange 17 which is an integral part of the cap 10 (of stiffer material) may be integrally formed at its lower end face wi-th two concentric downwardly projecting ribs 17, radially spaced to the extent ~R, and having circumerentially extending indenting contact with the flat upper surface lS o the seating ~lange 15 of fitment 16 (o~ the more yieldable material). The thickness of the flange 17 of Fig. 5 should be sufficient for spacing ~ R to enable such self-stabilizing axial loading of the double seal at ribs 17' that no leakage can occur, for a closed and filled container. As shown in Fig. 5A, the preferred contouring of ribs 17' is as convergent cones at +
approximately 45 to the longitudinal axis of the closure, and having a gently rounded apex at the region of rib (17') contact with the seating flange 15; for a household-size container closure, the axial extent of ribs 17' may be in the order of 0.005 inch, and the rounded apex in each case may be of 0.002 inch radius.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A bottle-cap and pouring-fitment assembly, comprising a bottle cap having a top web and an outer annular flange de-pending therefrom, said flange having inner thread formations for selective engagement to an externally threaded bottle, inner and intermediate integral annular flanges depending from said web in radially spaced concentric relation with the axis of the thread formations of said outer flange; a pouring fitment comprising an upper tubular portion having a radially outward pouring lip at its upper end and a radially outward seating flange at its lower end, an outer annular skirt depending from the outer edge of said seating flange and having an inner bead formation for self-retained engagement over an externally beaded end of the bottle, the outer diameter of said outer annular skirt having radial clearance with the outer annular flange of said cap, and angularly spaced radial-strut formations within the lower end of said tubular portion; the upper tubular portion of the fitment being received in the space between said inner and intermediate flanges of the cap, the external surface of said inner flange of the cap having frictional telescoping engagement with the inner surface of the upper tubular portion of the fitment throughout the extent of its axial overlap there-with, and the respective axial lengths of said inner and inter-mediate flanges being such that direct circumferentially con-tinuous axial abutment of said intermediate flange with said seating flange will limit threaded advance of the cap to the bottle prior to axial abutment of said inner flange with said radial-strut formations.
2. The assembly of claim 1, wherein said bottle cap and said pouring fitment are separate single injection-molded plastic parts, the plastic material of said pouring fitment being selected for greater deformability than the material of said cap.
3. The assembly of claim 2, wherein said cap is of poly-propylene and said pouring fitment is of polyethylene.
4. The assembly of claim 1, wherein said seating flange has an annular ridge formation at the locus of axial abutment with said intermediate flange.
5. The assembly of claim 1, wherein the lower projecting end of said intermediate flange is characterized by two concentric radially spaced downwardly projecting circumferential-ly continuous ribs, and wherein said seating flange is config-urated for concurrent reception of circumferentially continuous abutment by both said ribs.
6. A bottle-cap and pouring-fitment assembly, comprising a bottle cap having a top web and an outer annular flange depending therefrom, said flange having inner thread formations for selective engagement to an externally threaded bottle, an inner integral annular flange depending from said web in con-centric relation with the axis of the thread formations of said outer flange; a pouring fitment comprising an upper tubular portion having a radially outward pouring lip at its upper end and a radially outward seating flange at its lower end, an outer annular skirt depending from the outer edge of said seating flange and having an inner bead formation for self-retained engagement over an externally beaded end of the bottle, the outer diameter of said outer annular skirt having radial clearance with the outer annular flange of said cap, and angularly spaced radial-strut formations within the lower end of said tubular portion; said cap having a circumferentially continuous integral interior abutment stop formation in radially spaced concentric relation with said inner annular flange and in radial overlap with said seating flange, the upper tubular portion of the fitment being received in the space between said abutment stop formation and said inner annular flange, the ex-ternal surface of said inner flange of the cap having frictional telescoping engagement with the inner surface of the upper tubular portion of the fitment throughout the extent of its axial overlap therewith, and the respective axial locations of said abutment stop formation and of the lower end of said inner flange being such that direct circumferentially continuous axial abutment of said intermediate flange with said seating flange will limit threaded advance of the cap to the bottle prior to axial abutment of said inner flange with said radial-strut formations.
7. The assembly of claim 6, in which said abutment stop formation is the lower end of an integral intermediate flange depending from said web in spaced relation between said inner and outer flanges of the cap.
8. The assembly of claim 7, in which the lower end of said intermediate flange is characterized by two radially spaced concentric downwardly projecting ribs adapted for concurrent circumferentially con-tinuous sealing contact with said seating flange.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28821881A | 1981-07-29 | 1981-07-29 | |
| US288,218 | 1981-07-29 | ||
| US35253682A | 1982-02-26 | 1982-02-26 | |
| US352,536 | 1982-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178247A true CA1178247A (en) | 1984-11-20 |
Family
ID=26964899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000401288A Expired CA1178247A (en) | 1981-07-29 | 1982-04-20 | Bottle-cap and pouring-fitment assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1178247A (en) |
-
1982
- 1982-04-20 CA CA000401288A patent/CA1178247A/en not_active Expired
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