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Publication numberUS3892326 A
Publication typeGrant
Publication dateJul 1, 1975
Filing dateNov 9, 1973
Priority dateNov 9, 1973
Publication numberUS 3892326 A, US 3892326A, US-A-3892326, US3892326 A, US3892326A
InventorsSchneible Seth R
Original AssigneeEyelet Specialty Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Safety closure for a metal container
US 3892326 A
Abstract
The invention contemplates a child-resistant safety cap and container -neck combination wherein the container is formed of multiple metal parts; the cap has a threaded engagement to the neck but a releasable ratcheting one-way engagement relation develops between the container and the neck, in approach to the closed relation of the parts. The particular feature of the invention resides in structural formation of the neck part of the container so as to readily accept assembly of a resilient plastic locking ring in axially located and angularly keyed relation to the neck part.
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Description  (OCR text may contain errors)

United States Patent Schneible Jul 1, 1975 [54] SAFETY CLOSURE FOR A METAL 3,744,655 7/1973 Nixdorlf, .lr 215/216 CONTAINER Primary Examiner-George T. Hall t [75] Inventor if? R Schnelble Sou h Salem Attorney, Agent, or Firm-Hopgood, Cahmafde, Kalil,

Blaustein & Lieberman [731 Assignee: Eyelet Specialty Co., Inc.,

Wallingford, Conn. ABSTRACT [22] Flled 1973 The invention contemplates a child-resistant safety Appl. No.1 414,448

US. Cl. 215/221; 215/216; 220/315; 222/153 Int. Cl. 865d 55/02; B65d 85/56; A6lj 1/00 cap and container -neck combination wherein the container is formed of multiple metal parts; the cap has a threaded engagement to the neck but a releasable ratcheting one-way engagement relation develops between the container and the neck, in approach to the closed relation of the parts. The particular feature of the invention resides in structural formation of the neck part of the container so as to readily accept assembly of a resilient plastic locking ring in axially located and angularly keyed relation to the neck part.

3 Claims, 7 Drawing Figures 1 SAFETY CLOSURE FOR A METAL CONTAINER This invention relates to metal containers adapted to contain hazardous substances, and more particularly relates to the construction of such containers so that they may accept safety closures which render the container child-resistant, i.e., resistant to tampering by children.

It is an object of this invention to provide a new and improved container construction, with a child-resistant safety-cap feature, particularly of the variety having rotary engagement, as by threads.

Another object of the invention is to provide a new metal container construction with such a safety feature, such construction being economical to manufacture and readily lending itself to automatic production-line facilities for filling and capping the container.

A still further object is to meet the above objects with a construction of inherent low cost, involving minimum alteration of present constructions.

Other objects and various further features of novelty and invention will be pointed out or will occur to those skilled in the art from a reading of the following specification in conjuction with the accompanying drawings. In said drawings, which show, for illustrative purposes only, preferred forms of the invention:

FIG. I is a fragmentary perspective view of a closed metal container of the invention, with contents sealed by a closure of the character indicated;

FIG. 2 is an exploded perspective view of the parts of FIG. I, the cap being tilted up for a better showing of detail;

FIG. 3 is a side view, partly broken-away and in longitudinal section, to show the container-neck part of FIG.

FIG. 4 is a plan view of the part of FIG. 3;

FIGS. 5 and 6 are enlarged vertical sectional views of portions of the part of FIGS. 3 and 4, taken respectively at sections 5-5 and 66 of FIG. 4; and

FIG. 7 is a fragmentary view, partly broken-away and in longitudinal section, to illustrate a modification.

Referring to FIGS. I to 6, the invention is shown in application to a multiple-part metal container having a threaded neck part 11 and selectively opened and closed by a cap 12 having a threaded bore 13. The container may be one of a variety of styles and constructions, and is shown as generally rectangularly prismatic, with an upperend body part of panel I4 having a short cylindrical flange IS struck up from panel 14 at the location of a dispensing opening therein. Cap 12 may be of any suitable construction, being typically an injection-molded plastic part.

The neck part II non-rotatably carries a locking ring 16 in the intermediate region 17 between the threaded region 18 and the base-end or container-attachment portion I9 of said ring part; as suggested by sectioning in FIG. 6, ring I6 is of suitable plastic, preferably injection-molded. and is proportioned for relatively stiffly compliant yieldability, for the deflections and transient deformations described below. The ring 16 may be of the type more fully discussed and disclosed in pending Landen application, Ser No. 351,266, filed Apr. l6, I973. Briefly, it suffices here to indicate that such a ring 16 includes a cylindrical body 20 with a bore characterized as by spline teeth 2l for anti-rotational engagement with one or more key formations 22 in the neck part II; the spacing between ribs 22 is preferably an integer multiple of the pitch interval of the spline teeth 21. Peripheral-flange formations 23 terminate in substantially diametrically opposite axially compliant tabs 24 which extend radially outward for manual actuation, by downward depression to release an applied cap I2. Ratchet lugs 25 on the upper surface of tabs 24 have one-way ratcheting engagement with ratchettooth formations 26 in the bore 13 of cap 12, the relation of these formations being such as to permit escaping ratchet action as the cap approaches its full threaded advance on the threaded portion 18 of the neck part 11.

The neck and body parts 11-14 are intentionally patterned closely on existing practice in the metal container art. For example, the neck part Il may be of overall length L and diameter D corresponding to a conventional neck part; and the attachment region 19 may be a short cylindrical sleeve for telescoping fit over the body flange 15, the same being permanently and circumferentially continuously secured by soldering at the region of telescopic overlap. In accordance with the invention, the intermediate region I7 in neck part II and the bore of ring 16 are particularly characterized for simple and accurate assembly, at a point in time after the soldering operation has assembled the container parts 11-14.

The neck part 11 is initially a straight cylindrical tube into which the threads 18 and lip 27 are rolled or otherwise formed. These operations may remain the same, in practicing the invention, in that the axial-locating and keying formations may be subsequent operations on otherwise conventionally formed neck parts; it will also be understood that all forming operations can be automatically performed, in a single machine and at the same time, if desired.

As shown, the axial-locating means comprises an upper circumferentially continuous bead or outward projection 28 near the lower end of threaded portion 18, and a lower circumferentially continuous bead or outward projection 29 near the upper end of attachment portion 19. The incremental radius or extent AR, of outward projection of bead 28 is less than that (AR of bead 29, the relationship of AR; to AR, being preferably in the order of 2:1, as shown, and the effective axial separation S between beads 28-29 is substantially the axial extent of the ring body 20. The keying formations 22 between beads 28-29 are shown as angularly spaced, longitudinally extending, outward projections or ribs, the same being rounded or otherwise formed to engage between spline teeth 21 in the bore of ring 16; preferably, ribs 22 extend outwardly to substantially the same extent as the lower bead 29, as shown in FIG. 5.

To coact with the described neck-part formations, the spline teeth 21 are of radial depth substantially that of the lower bead 29, and the lower ends of teeth 21 are conically truncated or otherwise tapered, as shown at 30 in FIG. 6. The extent of this taper is such as to reliably locate on bead 28 in the course of axial assembly, the taper 30 providing radially outward cam action as ring 16 is transiently and compliantly deformed in its progress past bead 28. Once past bead 28, the lower end of ring 16 is axially located by bead 29 and the upper end snaps into location beneath head 28. The splines 21 engage lugs 22 in the course of such assembly, the location being completed upon the indicated snap-in action.

It will be seen that the described construction lends itself to lowcost realization of all stated objects, using to the maximum extent parts and technicques which are current and readily available. Ring assembly to preassembled container body and neck parts is a simple automated procedure may if desired be performed at the same time as automated application of the cap 12 is made. In other words. rotation and axial advance of a tool which simultaneously assembles a ring 16 and its cap 12 will assure against fouling the keyed engage ment 21-22, thereby ensuring proper ring location, fol lowed by complete threaded advance of cap 12 to its ratchet-locked position,

PK]. 7 illustrates a modification wherein the princi ple of the invention is applied to another metalcontainer construction, wherein the neck part ll includes threaded and intermediate regions l8l7' as already described, but wherein the attachment region 19' is characterized by a frusto-conical outward flare to the diameter of an upwardly open cylindrical body part 32. Container construction is completed by the usual chime connection 33 between parts l9'-32. Since the base end 19 flares outwardly from the intermediate re gion 17, there is no need for a lower bead 29, but the upper bead 28' and keying ribs 22' will be understood to have the same relationship with splines 21 and ring 16 as already described, the lower limit of axial reten tion being determined by flared portion 19.

It will be appreciated that the construction of FIG. 7 lends itself to various methods of assembly, depending upon the nature of the particular material contents of and filling devices for the container. For example. cap 12, ring 16, and the neck part 1] may be a complete preassembly, the same being assembled by chime connection 33 after the containerbody part 32 has been filled. Alternatively, parts 11 '-32 may be preassembled at chime 33, so that filling is via the opening in neck 11', the ring 16 and cap 12 being thereafter applied. Still further, alternatively, the cylindrical body 32 may have an open bottom. to be later closed by a chimed connection to a bottomend panel (not shown); in this event, the cylindrical (open-bottom) body part 32, chime-connected to neck part 11', and with ring 16 and cap 12 applied, may all be a subassembly adapted for bottom filling, the container being completed and sealed by the bottom-chime connection to the bottom end panel.

While the invention has been described in detail for the preferred forms shown. it will be understood that modifications may be made without departure from the claimed invention.

What is claimed is:

1. In combination, a metal container including a threaded neck part, said part comprising a cylindrical portion having said threads predominantly near the dispensing end and having means for attachment to a container-body part at the other end, there being an intermediate region of axial separation between the region of said attachment means and the region of said threads, first and second outwardly projecting bead means at each of two axially spaced radial planes of said intermediate region between said first and second bead means, said key means projecting outwardly at least substantially to the extent of radial projection of that one of said first and second bead means which is more near said threads, a plastic locking ring of relatively stiffiy yieldable material having a splined bore engaged to said intermediate region and to said key means, said locking ring being axially confined by said first and second bead means, and a closure cap having a threaded bore coacting with the threaded region of said neck part, said cap and ring having releasable formations engageable with escaping ratchet action upon approach to the fully engaged relation of said threads and cap, said bead which is more near to said attachment means being of greater maximum diameter than the other of said beads, whereby said greater-diameter bead may act as a stop for assembling application of said ring over said lesser-diameter bead and into said keyed engagement.

2. The combination of claim I, in which the lower end of the bore of said ring is outwardly tapered for cammed riding over the lesser-diameter bead upon assembly of said ring to said neck part.

3. As an article of manufacture, for assembly to a metal container, a generally cylindrical metal neck part having threads predominantly near a dispensing end and having means for attachment to a container-body part at the other end, there being an intermediate region of axial separation between the region of said at tachment means and the region of said threads, a first outwardly projecting circumferential bead at a radial plane between said threaded and intermediate regions, a second and radially larger outwardly projecting cir cumferential head at a second radial plane between said intermediate region and the region of said attachment means, and outwardly projecting key means formed in said intermediate region between said first and second beads.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3700133 *Dec 17, 1970Oct 24, 1972Continental Can CoThreaded safety closure
US3744655 *Jul 8, 1971Jul 10, 1973Anchor Hocking CorpSafety closure for containers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3923181 *Mar 21, 1974Dec 2, 1975Sidney M LibitChild-resistant closures
US3977557 *Oct 15, 1975Aug 31, 1976Polytop CorporationContainer-closure structure employing fitment to prevent closure removal
US4099639 *May 16, 1977Jul 11, 1978Lewis, Pauls & Associates, Ltd.Child resistant closure
US4241856 *Feb 16, 1979Dec 30, 1980Weatherchem CorporationChild-resistant fluid top
US4524888 *Jul 26, 1982Jun 25, 1985Canyon CorporationDispenser
US4576315 *May 10, 1984Mar 18, 1986Vitale Ralph ASafety closure for aerosol cans
US4662542 *Jun 7, 1985May 5, 1987Vitale Ralph ASafety closure for aerosol cans
US4948002 *Dec 29, 1988Aug 14, 1990The Procter & Gamble CompanyPackage exhibiting improved child resistance without significantly impeding access by adults
US5038454 *Mar 26, 1990Aug 13, 1991The Procter & Gamble CompanyInjection blow molding process for forming a package exhibiting improved child resistance
US5038954 *Oct 30, 1989Aug 13, 1991Enseco IncorporatedShipping and storing apparatus
US5186344 *Oct 2, 1990Feb 16, 1993The Procter & Gamble CompanyContainer and closure having means for producing an audible signal when a seal has been established
US5213223 *Mar 23, 1992May 25, 1993Sunbeam Plastics CorporationChild resistant closure-adaptor
US5230433 *Jan 28, 1992Jul 27, 1993The Procter & Gamble CompanyAdult friendly child-resistant attachment for containers used to store potentially dangerous materials
US5383564 *Jan 21, 1993Jan 24, 1995The Procter & Gamble CompanyAdult friendly child-resistant attachment for containers used to store potentially dangerous materials
US5413233 *Aug 30, 1994May 9, 1995The Procter & Gamble CompanyChild resistant bottle closure
US5544768 *Oct 12, 1995Aug 13, 1996Comar Inc.Child resistant closure
US5562218 *Sep 7, 1995Oct 8, 1996The Procter & Gamble CompanyAdult friendly child-resistant attachment for containers used to store potentially dangerous materials
US5564580 *Jun 7, 1995Oct 15, 1996The Procter & Gamble CompanyAdult friendly child-resistant attachment for containers used to store potentially dangerous materials
US5573143 *Sep 21, 1994Nov 12, 1996Colgate-Palmolive CompanyBlow molded multi-chamber containers with dispenser/doser
US5586671 *Feb 23, 1996Dec 24, 1996The Procter & Gamble CompanyChild resistant package
US5664693 *May 28, 1996Sep 9, 1997Owens-Illinois Closure Inc.Child resistant package
US5816422 *Sep 30, 1996Oct 6, 1998C.T.X., S.A.Package with safety lid and seal
US5899348 *Dec 2, 1997May 4, 1999Owens-Illinois Prescription Products Inc.Child resistant package
US6039195 *Dec 11, 1998Mar 21, 2000Owens-Brockway Prescription Products Inc.Child resistant package
US6076689 *Feb 5, 1998Jun 20, 2000Kerr Group, Inc.Child resistant and adult friendly container and closure device
US6315165Jun 29, 1999Nov 13, 2001Loctite (R&D) LimitedDevice for expressing substances from a deformable tube
US6327770Dec 16, 1999Dec 11, 2001Owens-Illinois Prescription Products Inc.Child resistant package
US6508373Oct 20, 2000Jan 21, 2003Owens-Illinois Closure Inc.Child resistant container and closure, package and method of assembly having a locking tab on the container and a cam stop lug on the closure
US7077294 *Jul 24, 2002Jul 18, 2006BericapDevice for stoppering a container and drawing off a fluid product
US8727389 *May 1, 2008May 20, 2014Worthington Torch, LlcGas appliance
DE4329036A1 *Aug 30, 1993Feb 10, 1994Herberts GmbhChildproof closing device for containers - has interacting rigid and elastically deformable locking devices underneath screw thread on neck and lid.
DE4329036C2 *Aug 30, 1993Aug 19, 1999Herberts GmbhVorrichtung zum Verschließen von Behältern
EP0926077A1Dec 1, 1998Jun 30, 1999Owens-Illinois Prescription Products Inc.Child resistant screw closure
WO1997042091A1 *Apr 21, 1997Nov 13, 1997Alcan Rorschach AgLid with screw cap for a metal container and a method of connecting the screw cap to the lid part of a container
Classifications
U.S. Classification215/221, 220/315, 215/216, 222/153.14
International ClassificationB65D50/04, B65D50/00
Cooperative ClassificationB65D50/046
European ClassificationB65D50/04F2