US3735905A - Precision neck construction for center lock captive closure - Google Patents

Precision neck construction for center lock captive closure Download PDF

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Publication number
US3735905A
US3735905A US00109482A US3735905DA US3735905A US 3735905 A US3735905 A US 3735905A US 00109482 A US00109482 A US 00109482A US 3735905D A US3735905D A US 3735905DA US 3735905 A US3735905 A US 3735905A
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United States
Prior art keywords
plug
neck
neck element
wall portion
body portion
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US00109482A
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C A Badavas
W Landry
J W Piltzecker
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Rexam Beverage Can Co
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American Can Co
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Assigned to AMERICAN CAN PACKAGING INC. reassignment AMERICAN CAN PACKAGING INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN CAN COMPANY, A NJ CORP.
Assigned to AMERICAN NATIONAL CAN COMPANY reassignment AMERICAN NATIONAL CAN COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN CAN PACKAGING INC., NATIONAL CAN CORPORATION (CHANGED TO), TRAFALGAR INDUSTRIES, INC. (MERGED INTO)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
    • B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
    • B65D47/242—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving helically

Definitions

  • the neck construction of the closure is molded from plastic and may be formed integrally with the container body, such as the collapsible tube in the aforementioned U.S. patent, or the neck element may be molded as a separate component which is subsequently associated with the container body in another manner, as is well known in the art.
  • the neck element includes a hollow tubular body and a central sealing plug disposed within the body and carried by circumferentially spaced radial webs, the spaces between which provide the apertures through which the contents of the container are dispensed.
  • the present invention provides an improved precision-formed neck element for center lock or captive plug closures characterized by a plurality of precisely formed dispensing orifices of arcuate configuration as viewed in plan anddisposed in spaced relation to the center plug. Further, the terminal portions of the neck element bounding the dispensing orifices define a planar sheared surface of precise and controlled character so as to insure uniformity of the dispensing passages.
  • FIG. I is a sectional view of the neck element of the present invention, further showing a fragmentary container body associated therewith;
  • FIG. 2' is a top plan view of the neck element of the invention
  • FIG. 3 is a sectional view taken along the lines 33 of FIG. 1;
  • FIG. 4 illustrates a partiallyformed neck member according to the invention and prior to final fabrication thereof.
  • the neck element of the present invention is shown generally at 10 and may be associated in conventional manner with a tubular container body 12 secured thereto at a joint 14 adjacent the lower shoulder of the neck element.
  • the neck 10 may be formed integrally with the container body 12 if desired.
  • a closure C shown in dashed lines which per se does not form a part of the present invention.
  • the closure C is, however, centrally apertured at C1 for reception therethrough of the center plug 16 of the instant neck element and wherein also the closure may conventionally have threads C2 or other interengaging means for cooperation with means such as threads 18 provided on the instant neck member.
  • Retaining means are provided whereby the closure C is not normally removed from the neck element during dispensing, all as shown more fully in the aforesaid patent to Grimsley et al. US Pat. No. 3,263,851.
  • the neck element 10 includes the central plug 16 which is suspended as by a plurality of integrally formed radial webs 20, shown as four in number, within the tubular body portion 22 of neck 10.
  • the plug 16 is imperforate and usually molded with an indented aperture 24 to minimize wastage of material.
  • the plug 16 further includes a circumambient wall portion 24 in spaced relation thereto and connected to the plug 16 by a short radial flange 28, whereby the plug 16, flange 28 and wall portion 26 together define an annular recess or groove about the plug 16.
  • top or upper terminal portions of the tubular body 22, webs 24, and the wall 26 together define a common planar surface 30 on the neck 10.
  • the aforesaid top planar surface 30 thereby defines several dispensing orifices 36 which in the preferred embodiment of the invention partake of an arcuate configuration.
  • the orifices 36 inwardly thereof comprise elongated flow passages 38 or dispensing ports through which the product is expelled upon collapse of the container body portion 12 in usual manner.
  • the upper surface is planar, and in particular comprises a sheared surface thereby to define a positive and precise planar relation between the neck element portions and the dispensing orifices 36.
  • FIG. 4 relates to certain steps in the fabrication of the neck element of the present invention.
  • a full disclosure of the novel forming and fabricating technique will be found in our aforesaid copending application Ser. No. 869,675.
  • the neck 10 includes an obturation portion 0 which blocks the dispensing passages 38 between the webs 20.
  • the center plug 16 includes an undesirable sprue extension S.
  • the unwanted portions 0 and S are removed from the neck and at the same time the desired planar sheared surface 30 is formed on the neck 10 as by means of a reciprocable and rotatable knife assembly K which includes lower knife K1 and upper knife K2.
  • the molded neck element 10 (which may at this time have been associated with container body 12) is elevated from the tool member T, after which the knife member K is laterally translated to cause the upper knife K2 to sever the sprue extension S as seen in phantom lines to the right in FIG.
  • planar sheared surface 30 as aforesaid to positively open the passages 38 between webs 20 and define precisely formed right-angular dispensing orifices 36, thereby promoting smooth flow of the product in pressure dispensing from the container.
  • the neck element of the invention is formed by injection molding which permits the precision of contour and dimensional tolerance which cannot be achieved by other molding techniques, such as blow molding, thermoforming, etc.
  • the neck element 10 comprises an injection formed member of precise dimensional characteristics having the sheared surface 30, which defines the dispensing orifices 36 and which by virtue of the spacing of the dispensing orifices as above discussed, insures the cleanly formed and planar characteristics of the neck construction thereat.
  • the neck as formed further includes the conical surface 40 surrounding the upper narrow portion of the center plug 16 as well as a comparable conical portion 42 at the upper end of the tubular portion 22 of neck element 10. As is well known, these conical surfaces cooperate with the closure C to insure a positive and leakproof seal when the cap or closure is in its closed and sealed position.
  • a neck element for a center-lock captive closure comprising:
  • annular wall portion disposed in circumambient spaced relation to said plug, said wall portion at its lower end being inturned toward said plug intermediate the plug length and integrally connected therewith, thereby to support said wall portion in spaced relation to said plug and define an annular recessed area therebetween, and,
  • the neck element of claim 1 further including an integrally formed shoulder flaring outwardly from the lower end of said tubular portion.

Abstract

A neck element for collapsible tubes or the like wherein the neck is formed as by injection molding to maintain precise dimensional tolerances thereof in a configuration to receive a centerlock captive closure wherein the neck central plug is suspended by circumferentially spaced radial webs within a hollow neck body thereby to define a plurality of precisely formed dispensing apertures between the tubular member and the plug and terminating in orifices bounded by a sheared planar upper terminal surface.

Description

United States Patent [191 Badavas et al.
[451 May 29,1973
[ 1 PRECISION NECK CONSTRUCTION FOR CENTER LOCK CAPTIVE CLOSURE [75] Inventors: Charles Arthur Badavas, Allendale, 1 N.J.; Raymond William Landry,
Hudson, Mass.; John William Piltzecker, Shelbyville, Tenn.
[73] Assignee: American Can Company, New
, York, N.Y. [22] Filed: Jan. 25, 1971 [21] Appl.No.: 109,482
Related US. Application Data [62] Division of Ser. No. $76,420, Aug. 31, 1966, abandoned. A] v r 52 us. Cl ..222/521 [51] Int. Cl. ..B67d 3/00 [58] Field of Search ..222/52l, 525, 541
[56] References Cited UNITED STATES PATENTS 1,597,665 8/1926 'Baltzley u222/521 Hall et al. ..222/521 2,591,231 4/1952 Boadway. ..222/521 2,907,489 10/1959 Taylor ..222/541 X 3,434,620 3/1969 Laurizio ..222/S41 X FOREIGN PATENTS OR APPLICATIONS 184,866 3/1956 Austria ..222/52l 169,532 8/1934 Switzerland ..222/521 Primary Examiner-Samuel F. Coleman Attorney-Robert P. Auber, Leonard R. Kohan and Warren N. Low
[5 7 ABSTRACT 3 Claims, 4 Drawing Figures ,Cl c
1. 1s E) 241 LQ 3 C2 AR l4 Pmiminm z 3.735.905
INVENTOIS Char/es Ari/7w Badavas Raymond Will/am Landry John William P/llzecker AT'I'OIN EYS PRECISION NECK CONSTRUCTION FOR CENTER LOCK CAPTIVE CLOSURE REFERENCE TO RELATED APPLICATIONS This application is a division of our application Ser. No. 576,420, filed Aug. 31, 1966, now abandoned in favor of continuation-in-part application Ser. No. 869,675,filed Oct. 27, 1969.
BACKGROUND OF THE INVENTION Center lock closure assemblies are well known in the art and presently enjoy extensive use with plastic squeeze containers such as bottles and collapsible tubes for dispensing a wide variety of viscous products. One typical closure of this character is set forth in U.S. Pat. No. 3,263,851 to A. K. Grimsley.
The neck construction of the closure is molded from plastic and may be formed integrally with the container body, such as the collapsible tube in the aforementioned U.S. patent, or the neck element may be molded as a separate component which is subsequently associated with the container body in another manner, as is well known in the art.
As is typical of the center lock closure construction, the neck element includes a hollow tubular body and a central sealing plug disposed within the body and carried by circumferentially spaced radial webs, the spaces between which provide the apertures through which the contents of the container are dispensed.
Although simple in mechanical operation, complexly contoured closures of this type present a relatively difficult moldingproblemJTight dimensional control and accurate neck finish surfaces are essential for leakproof operation, yet the neck element must be simple in construction to enable economical production thereof as well as effect proper dispensing of the ultimate container contents.
BRIEF SUMMARY OF THE INVENTION The present invention provides an improved precision-formed neck element for center lock or captive plug closures characterized by a plurality of precisely formed dispensing orifices of arcuate configuration as viewed in plan anddisposed in spaced relation to the center plug. Further, the terminal portions of the neck element bounding the dispensing orifices define a planar sheared surface of precise and controlled character so as to insure uniformity of the dispensing passages.
DESCRIPTION OF THE DRAWINGS Further features and advantages of the neck member of the invention will be apparent from the appended drawing disclosing an embodiment thereof.
In the drawings:
FIG. I is a sectional view of the neck element of the present invention, further showing a fragmentary container body associated therewith;
FIG. 2'is a top plan view of the neck element of the invention;
FIG. 3 is a sectional view taken along the lines 33 of FIG. 1; and,
FIG. 4 illustrates a partiallyformed neck member according to the invention and prior to final fabrication thereof.
DETAILED DESCRIPTION OF THE INVENTION With particular reference to FIG. 1, the neck element of the present invention is shown generally at 10 and may be associated in conventional manner with a tubular container body 12 secured thereto at a joint 14 adjacent the lower shoulder of the neck element. As indicated, the neck 10 may be formed integrally with the container body 12 if desired.
Associated with the neck element 10 is a closure C shown in dashed lines which per se does not form a part of the present invention. The closure C is, however, centrally apertured at C1 for reception therethrough of the center plug 16 of the instant neck element and wherein also the closure may conventionally have threads C2 or other interengaging means for cooperation with means such as threads 18 provided on the instant neck member. Retaining means are provided whereby the closure C is not normally removed from the neck element during dispensing, all as shown more fully in the aforesaid patent to Grimsley et al. US Pat. No. 3,263,851.
As aforesaid, the neck element 10 includes the central plug 16 which is suspended as by a plurality of integrally formed radial webs 20, shown as four in number, within the tubular body portion 22 of neck 10.
The plug 16 is imperforate and usually molded with an indented aperture 24 to minimize wastage of material. The plug 16 further includes a circumambient wall portion 24 in spaced relation thereto and connected to the plug 16 by a short radial flange 28, whereby the plug 16, flange 28 and wall portion 26 together define an annular recess or groove about the plug 16.
It is a feature of the present invention that the top or upper terminal portions of the tubular body 22, webs 24, and the wall 26 together define a common planar surface 30 on the neck 10.
The aforesaid top planar surface 30 thereby defines several dispensing orifices 36 which in the preferred embodiment of the invention partake of an arcuate configuration. The orifices 36 inwardly thereof comprise elongated flow passages 38 or dispensing ports through which the product is expelled upon collapse of the container body portion 12 in usual manner.
As aforesaid, the upper surface is planar, and in particular comprises a sheared surface thereby to define a positive and precise planar relation between the neck element portions and the dispensing orifices 36.
This will be better understood in connection with FIG. 4 which relates to certain steps in the fabrication of the neck element of the present invention. A full disclosure of the novel forming and fabricating technique will be found in our aforesaid copending application Ser. No. 869,675.
Thus, as initially formed by injection molding, the neck 10 includes an obturation portion 0 which blocks the dispensing passages 38 between the webs 20. Further, as initially formed, the center plug 16 includes an undesirable sprue extension S. The unwanted portions 0 and S are removed from the neck and at the same time the desired planar sheared surface 30 is formed on the neck 10 as by means of a reciprocable and rotatable knife assembly K which includes lower knife K1 and upper knife K2. As seen in FIG. 4, the molded neck element 10 (which may at this time have been associated with container body 12) is elevated from the tool member T, after which the knife member K is laterally translated to cause the upper knife K2 to sever the sprue extension S as seen in phantom lines to the right in FIG. 4. Likewise, lateral'advance of knife 1(1 causes the same to cleanly pierce the neck member 10 and thereafter relative rotation between knife K1 and the neck member 10 causes shearing severance of the annular obturat ing portion as also seen in phantom lines to the right in FIG. 4.
In this manner there will be simultaneously provided the planar sheared surface 30 as aforesaid to positively open the passages 38 between webs 20 and define precisely formed right-angular dispensing orifices 36, thereby promoting smooth flow of the product in pressure dispensing from the container.
In this regard and as above indicated, the neck element of the invention is formed by injection molding which permits the precision of contour and dimensional tolerance which cannot be achieved by other molding techniques, such as blow molding, thermoforming, etc.
Accordingly, the neck element 10 comprises an injection formed member of precise dimensional characteristics having the sheared surface 30, which defines the dispensing orifices 36 and which by virtue of the spacing of the dispensing orifices as above discussed, insures the cleanly formed and planar characteristics of the neck construction thereat.
The neck as formed further includes the conical surface 40 surrounding the upper narrow portion of the center plug 16 as well as a comparable conical portion 42 at the upper end of the tubular portion 22 of neck element 10. As is well known, these conical surfaces cooperate with the closure C to insure a positive and leakproof seal when the cap or closure is in its closed and sealed position.
What is claimed is:
1. A neck element for a center-lock captive closure, said neck element comprising:
injection-molded thermoplastic material, thereby to insure precise dimensional tolerances thereof,
a tubular body portion terminating in an orifice adjacent the upper end thereof,
an imperforate plug disposed centrally of said orifice and extending above and below said body portion upper end,
an annular wall portion disposed in circumambient spaced relation to said plug, said wall portion at its lower end being inturned toward said plug intermediate the plug length and integrally connected therewith, thereby to support said wall portion in spaced relation to said plug and define an annular recessed area therebetween, and,
a plurality of webs extending substantially radially between and interconnecting said plug and surrounding wall portion with said tubular body portion, thereby to define a plurality of elongated dispensing passages,
the upper end of said tubular body portion, the upper end of said circumambient wall portions, and the top surfaces of said webs (constituting sheared planar surfaces) lying in a common plane.
2. The neck element of claim 1 further including an integrally formed shoulder flaring outwardly from the lower end of said tubular portion.
3. The neck element of claim 2 wherein said shoulder merges into a tubular container body formed from plastic material.

Claims (3)

1. A neck element for a center-lock captive closure, said neck element comprising: injection-molded thermoplastic material, thereby to insure precise dimensional tolerances thereof, a tubular body portion terminating in an orifice adjacent the upper end thereof, an imperforate plug disposed centrally of said orifice and extending above and below said body portion upper end, an annular wall portion disposed in circumambient spaced relation to said plug, said wall portion at its lower end being inturned toward said plug intermediate the plug length and integrally connected therewith, thereby to support said wall portion in spaced relation to said plug and define an annular recessed area therebetween, and, a plurality of webs extending substantially radially between and interconnecting said plug and surrounding wall portion with said tubular body portion, thereby to define a plurality of elongated dispensing passages, the upper end of said tubular body portion, the upper end of said circumambient wall portions, and the top surfaces of said webs (constituting sheared planar surfaces) lying in a common plane.
2. The neck element of claim 1 further including an integrally formed shoulder flaring outwardly from the lower end of said tubular portion.
3. The neck element of claim 2 wherein said shoulder merges into a tubular container body formed from plastic material.
US00109482A 1971-01-25 1971-01-25 Precision neck construction for center lock captive closure Expired - Lifetime US3735905A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779764A (en) * 1986-11-19 1988-10-25 Lynes Holding S.A. Pouring stopper
EP0378488A1 (en) * 1989-01-06 1990-07-18 Cebal S.A. Dispenser for viscous products having a central cap opened by turning it
US6257450B1 (en) 1999-04-21 2001-07-10 Pechiney Plastic Packaging, Inc. Dual dispense container having cloverleaf orifice
DE202008003937U1 (en) 2008-03-20 2008-06-12 Mauer Ag Dosing closure for tubes
US20090178729A1 (en) * 2008-01-14 2009-07-16 Guy Ben Zur Device for transfer of substances between containers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597665A (en) * 1926-02-05 1926-08-31 James S Cushman Closure
CH169532A (en) * 1933-06-29 1934-05-31 Mermillod Marcel Compressible tube, intended to contain a pasty substance and whose orifice is capped with a movable closure cap.
US2081585A (en) * 1935-10-05 1937-05-25 Hall Albert Closure
US2591231A (en) * 1947-04-24 1952-04-01 Innovations Inc Sealing and dispensing closure for container necks
AT184866B (en) * 1953-04-28 1956-03-10 Ludwig Gruber Screw cap for container
US2907489A (en) * 1956-10-17 1959-10-06 American Flange & Mfg Disposable vent plug
US3434620A (en) * 1966-03-10 1969-03-25 American Flange & Mfg Frangible plastic closure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597665A (en) * 1926-02-05 1926-08-31 James S Cushman Closure
CH169532A (en) * 1933-06-29 1934-05-31 Mermillod Marcel Compressible tube, intended to contain a pasty substance and whose orifice is capped with a movable closure cap.
US2081585A (en) * 1935-10-05 1937-05-25 Hall Albert Closure
US2591231A (en) * 1947-04-24 1952-04-01 Innovations Inc Sealing and dispensing closure for container necks
AT184866B (en) * 1953-04-28 1956-03-10 Ludwig Gruber Screw cap for container
US2907489A (en) * 1956-10-17 1959-10-06 American Flange & Mfg Disposable vent plug
US3434620A (en) * 1966-03-10 1969-03-25 American Flange & Mfg Frangible plastic closure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779764A (en) * 1986-11-19 1988-10-25 Lynes Holding S.A. Pouring stopper
EP0378488A1 (en) * 1989-01-06 1990-07-18 Cebal S.A. Dispenser for viscous products having a central cap opened by turning it
US6257450B1 (en) 1999-04-21 2001-07-10 Pechiney Plastic Packaging, Inc. Dual dispense container having cloverleaf orifice
US20090178729A1 (en) * 2008-01-14 2009-07-16 Guy Ben Zur Device for transfer of substances between containers
DE202008003937U1 (en) 2008-03-20 2008-06-12 Mauer Ag Dosing closure for tubes

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Date Code Title Description
AS Assignment

Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354

Effective date: 19870430

Owner name: AMERICAN NATIONAL CAN COMPANY

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354

Effective date: 19870430

Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Effective date: 19861107

Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Effective date: 19861107