Source: http://www.google.com/patents/US5330083?ie=ISO-8859-1
Timestamp: 2014-07-13 11:05:39
Document Index: 557484820

Matched Legal Cases: ['art.\n7', 'art.\n9', 'art 24', 'art 24', 'art 24', 'art 24', 'art 24', 'art 24', 'art 24']

Patent US5330083 - Container with dripless spout and method of forming same - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsThis relates to the provision of the pour spout portion of a blow molded plastic bottle with a dripless lip. In one form, the terminal end of the pour spout is internally reamed at an angle so as to terminate in an exterior sharp edge, after which the resultant tapered end portion of the pour spout is...http://www.google.com/patents/US5330083?utm_source=gb-gplus-sharePatent US5330083 - Container with dripless spout and method of forming sameAdvanced Patent SearchPublication numberUS5330083 APublication typeGrantApplication numberUS 08/043,291Publication dateJul 19, 1994Filing dateApr 6, 1993Priority dateOct 15, 1990Fee statusLapsedAlso published asUS5215694Publication number043291, 08043291, US 5330083 A, US 5330083A, US-A-5330083, US5330083 A, US5330083AInventorsGeorge F. Bartimes, Lawrence D. StepenskeOriginal AssigneeContinental Plastic Containers, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (12), Referenced by (7), Classifications (11), Legal Events (18) External Links: USPTO, USPTO Assignment, EspacenetContainer with dripless spout and method of forming sameUS 5330083 AAbstract This relates to the provision of the pour spout portion of a blow molded plastic bottle with a dripless lip. In one form, the terminal end of the pour spout is internally reamed at an angle so as to terminate in an exterior sharp edge, after which the resultant tapered end portion of the pour spout is engaged by a rotating tool which frictionally heats the plastic engaged thereby and progressively turns over the sharp edge through an angle on the order of 180� to provide the desired dripless lip. In another form, the pour spout portion of the container neck finish is provided with an integrally molded outwardly directed hollow rib which lies in a sloping plane. The rib extends only partially about the circumference of the pour spout. The pour spout is then trimmed at an angle to the axis of the pour spout and parallel to the plane of the rib so as to provide for a pour lip of limited circumferential extent and which pour lip, depending upon the plane of trimming may terminate in a sharp dripless lip. This latter container is provided with a special closure which includes a hollow plug portion and progressively engages in the trimmed pour spout and forms a seal therewith.
We claim: 1. A container having a neck finish including a terminal cylindrical part defining a mouth, and said cylindrical part being formed with a hollow, radially outwardly directed bead of limited circumferential extent, said bead, over at least part of said limited circumferential extent, having a substantially constant radial extension directed outwardly rom the remainder of said neck finish.
2. A container according to claim 1 wherein said cylindrical part has an axis, and said bead is centered in a plane tilted relative to said axis.
3. A container according to claim 1 wherein said substantially constant radial extension occurs at and around the location of the portion of said bead having the greatest radially outwardly directed extension.
4. A container according to claim 1 wherein said neck finish includes a base portion of a diameter greater than said cylindrical part, said base portion carrying closure retaining means.
5. A container according to claim 4 wherein said cylindrical part has an axis, and said bead is centered in a plane tilted relative to said axis.
6. A container according to claim 5 wherein said cylindrical part is cut off along a plane passing through said bead and generally parallel to said tilted plane defines a dripless lip for said cylindrical part.
7. A container according to claim 6 wherein the angle between said axis going in a direction from said mouth finish toward the remainder of said container and the line in said plane passing through the center of said bead is at least 90 degrees.
8. A container according to claim 6 wherein said cylindrical part has a tilted free end, and said container is closed by a closure interlockingly engaged with said base portion, said closure having a depending plug portion received in said cylindrical part and having a radially outwardly projecting sealing ring of greater outwardly directed radial thickness than the remainder of said depending plug portion, said sealing ring sealingly engaging an interior surface of said cylindrical part.
9. A container according to claim 8 wherein said neck finish including said cylindrical part, said bead, and said base portion are all formed integrally.
10. A method of providing a container neck finish with a dripless finish, said method comprising the steps of providing a tubular neck finish, with a hollow radially outwardly bead of limited circumferential extent, and trimming said neck finish in a plane passing through said bead with said dripless finish being formed by that portion of said bead remaining integral with said neck finish.
11. A method according to claim 10 wherein said dripless finish is radially offset outwardly of adjacent portions of said neck finish,
12. A method according to claim 10 wherein said finish has a general axis, said bead has a central part in an axial direction lying in a plane tilted relative to said general axis.
13. A method according to claim 12, wherein said plane of trimming is generally coplanar with said bead tilted plane.
14. A method according to claim 12, wherein said plane of trimming is generally parallel with said bead tilted plane.
15. A method according to claim 12 wherein said plane of trimming is generally parallel with said bead tilted plane and axially offset therefrom.
This is a division of application Ser. No. 07.597,347, filed Oct. 15, 1990, now U.S. Pat. No. 5,215,694, which issued on Jun. 1, 1993.
With the above and other objects in view that will hereinafter appear, the nature of the invention will be more clearly understood by reference to the following detailed description,, the appended claims, and the several views illustrated in the accompanying drawings.
Reference is first made to FIG. 1 where there is illustrated a molded neck finish 20 of the container 22. The neck finish 20 includes an upper portion 24 which is of a slightly smaller diameter than the lower neck finish portion 26. The upper portion 24 is cylindrical and is, as a feature of its formation, provided with an inwardly directed flange 28 at the free end thereof. In the preferred embodiment of the container 22, theneck finish lower portion 26 will be provided with suitable threads 30 for releasably securing a conventional closure (not shown) to the container 22.
Referring now to FIG. 2, it will be seen that the upper portion 24 of the neck finish 20 has been internally reamed utilizing a rotating reamer 32. The reamer 32 is a cutting edge 34 disposed at a desired selected angle tothe axis of the neck finish 20. As shown in FIG. 5, the preferred angle is 30� to the central axis of the neck finish 20.
It is to be understood that the upper part 24 of the neck finish 20 will bereamed to terminate in a free pointed edge 36 as is clearly shown in FIG. 5.
After the upper part 24 of the neck finish 20 has been reamed and prepared for the formation of a dripless lip, the upper end of the neck finish is engaged by a tool which is shown in FIG. 3 and generally identified by thenumeral 38. The tool 38 includes a head 40 and a shank 42 by which the head40 is rotated. The undersurface of the head 40 is provided with a work engaging groove 44.
The cross section of the groove 44 is best shown in FIG. 4. Starting at theradially inner surface of the groove 44, it will be seen that the groove 44starts with the bottom wall 46 in a radius 48 which terminates in an axial line 50 which defines a cylindrical wall. At the upper end of the line 50 there is an inwardly directed radius 52 which terminates in an upwardly and outwardly sloping line 54 which defines a conical surface. The line 54preferably slopes at the same angle as the angle on paper formed by the reamer 32.
The top of the groove 44 is defined by a radius 56 which terminates at its outer end in a downwardly and outwardly sloping straight line 58 which designates an outer conical surface. The straight line 58 terminates in anouter annular bottom wall 60 which is higher than the central bottom wall 46. Preferably the slope of the conical portion defined by the sloping line 58 is at an angle on the order of 60� while the illustrated reaming angle is on the order of 30�.
The tool 38, while being rotated, is brought down relative to the reamed top part 24 of the neck finish 20 as shown in FIG. 5. The downward movement of the tool 38 is then continued with the tapered or flared extreme end of the upper part 24 being rolled radially outwardly. The outward rolling of the upper part 24 is facilitated by the rotation of thetool 58 which frictionally heats the tapered upper part 24.
The tool 38 is moved downwardly until it reaches the position shown in FIG.6 at which time the conical surface of the groove 44 defined by the straight line 58 comes to bear against the lower part of the tapered end portion 24 as shown in FIG. 6 at which time the upper part 24 is fully deformed. This is clearly shown in FIG. 6.
The neck finish 20 with the formed dripless lip 62 is now ready for use andto receive a closure after the associated container 22 has been filled. It will be seen that the radially inner part of the dripless lip 62 which is designated by the reference numeral 64 is conical and provides a good sealing seat for a like surface on an associated closure (not shown).
Referring first to FIGS. 12 and 13, it will be seen that there is illustrated a blow molded plastic container generally identified by the numeral 70. The container 70 is provided with a neck finish generally identified by the numeral 72. The neck finish 72 includes a base 74 which is provided with threads 76 for engagement by a closure which is generallyidentified by the numeral 78. The neck finish 72 also includes a pour spout80 which forms an upper part of the neck finish 72 and defines a pouring mouth 82. It will be seen that the pouring mouth 82 is cylindrical in outline and has a sloping upper edge 84. That part of the pour spout 80 which is uppermost is provided with a dripless lip 86 which is of partial circumference only as is clearly shown in FIG. 12. The pour spout 86 is the principal feature of this form of the invention.
Referring now to FIGS. 8 and 9, it will be seen that there is illustrated the pour spout 80 portion of the container 70 immediately after molding and with the flash (not shown) cut off. Most particularly, it will be seenthat the pour spout 80 is provided with an integrally molded radially outwardly directed rib 88 of limited circumferencial extent. Further, and most particularly, it will be seen that the rib 88 lies in a plane which slopes upwardly and to the right when viewed in FIG. 9.
Referring now specifically to FIG. 10, the pour spout 80 portion of the neck finish 72 may be trimmed in a plane identified by the line 90 which goes generally through the center of the rib 88. On the other hand, if thepour spout 80 is trimmed along a plane defined by the line 92, which is lower than the line 90, it will be seen that the resultant dripless lip 86will terminate in a sharp edge 94 .
Referring now most specifically to FIGS. 13 and 14 , it will be seen that the closure 78, which is preferably molded of a plastic, includes an end panel 100 which terminates in a downwardly and radially outwardly sloping shoulder 102 which, in turn, terminates in a lowermost skirt 104 which is provided with internal threads I 06 which match the threads 76.
It will be seen that the plug portion 108 is of a constant axial length so that when the skirt 104 is engaged with the base 74 of the neck finish 72,the plug portion I 08 has just begun to enter into the dripless lip 86 area. As the closure 78 moves downwardly on the neck finish 72 , the lowerend of the plug portion 88 will gradually enter into the pour spout 80 until it reaches the fully telescoped position of FIG. 14 . At this time the enlargement 110 is in radially outward pressure contact with the pour spout 80 through the circumference of the enlargement 110 and thus a seal is formed between the plug portion 108 and the pour spout 80 independentlyof any seal which may be otherwise formed between the closure 78 and the neck finish 72.
Although only two preferred embodiments of dripless lip arrangements have been specifically illustrated and described herein, it is to be understoodthat minor variations may be made in the dripless lip configuration and themethod of forming the same without departing from the spirit and scope of the invention as defined by the appended claims.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2601039 *Dec 1, 1949Jun 17, 1952Gould Livingstone JayPouring spoutUS2763402 *Jun 10, 1952Sep 18, 1956Gould Livingstone JayAdapterUS2975947 *May 3, 1957Mar 21, 1961Owens Illinois Glass CoDispensing type closuresUS3059816 *Feb 19, 1957Oct 23, 1962Schenley Ind IncCombination container closure and pouring deviceUS3300104 *Jul 9, 1965Jan 24, 1967Procter & GamblePouring adapter for liquid containersUS3391838 *Feb 6, 1967Jul 9, 1968George L. GundelContainer having anti-drip meansUS4133462 *Oct 19, 1977Jan 9, 1979Lindstrom Alrik CContainer closureUS4387819 *Dec 23, 1981Jun 14, 1983Corsette Douglas FrankSealing means for a snap-on fitmentUS4591078 *Dec 29, 1983May 27, 1986Colgate-Palmolive CompanyDripless pouring capUS4664295 *Jan 27, 1986May 12, 1987Motoyori IidaSpout for liquid containerUS5141138 *Jul 11, 1990Aug 25, 1992Astra PlastiqueSynthetic-resin pouring cap with hinged coverFR742627A * Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6648188Feb 2, 2001Nov 18, 2003Owens-Brockway Plastic Products Inc.Liquid dispensing package and method of manufactureUS6705495Mar 17, 2003Mar 16, 2004Owens-Brockway Plastic Products Inc.Liquid dispensing package and method of manufactureUS6821239Nov 8, 2002Nov 23, 2004Crown Cork & Seal Technologies CorporationSnap-hinge closure with tamper-evident lid and method of makingUS7281638Jul 24, 2001Oct 16, 2007Obrist Closures Switzerland GmbhSnap-hinge closure with tamper-evident lid and method of makingUS7390453Aug 4, 2006Jun 24, 2008Graham Packaging Company, L.P.Liquid dispensing package and method of manufactureUS7644843Dec 14, 2006Jan 12, 2010Rexam Closures And Containers Inc.Reverse taper dispensing orifice sealWO2012061174A2 *Oct 26, 2011May 10, 2012Amcor LimitedMolded preform and container having integrated pour spout* Cited by examinerClassifications U.S. Classification222/571, 222/546International ClassificationB65D47/40, B29C57/04Cooperative ClassificationB65D47/40, B29C57/04, B29C57/045, B29L2031/7158European ClassificationB29C57/04B, B65D47/40, B29C57/04Legal EventsDateCodeEventDescriptionJul 9, 2012ASAssignmentFree format text: PATENT RELEASE OF REEL 020134 FRAME 0846;ASSIGNOR:DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT;REEL/FRAME:028513/0857Owner name: CONSOLIDATED CONTAINER COMPANY LP, GEORGIAEffective date: 20120703Jul 5, 2012ASAssignmentEffective date: 20120703Free format text: PATENT 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