US3613928A - Safety-closure device - Google Patents

Safety-closure device Download PDF

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Publication number
US3613928A
US3613928A US101879A US3613928DA US3613928A US 3613928 A US3613928 A US 3613928A US 101879 A US101879 A US 101879A US 3613928D A US3613928D A US 3613928DA US 3613928 A US3613928 A US 3613928A
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United States
Prior art keywords
cap
closure
neck
section
axial
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Expired - Lifetime
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US101879A
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English (en)
Inventor
William James Landen
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Eyelet Specialty Co Inc
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Eyelet Specialty Co Inc
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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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/06—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • B65D41/065—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating with integral internal sealing means

Definitions

  • the specific construction that is described involves a bottle with a neck having a circular opening, and a closure cap having a cylindrical wall to overlap and lock to the outer surface of the neck.
  • the closed end of the cap has an axially tapering yieldable section which engages the circular neck opening in the course of closing the bottle.
  • the nature of the lock is such as to preload the yieldable engagement and to utilize the resilient action to retain the lock and to establish a liquid seal of the bottle contents.
  • This invention relates to tamperproof selectively openable closure devices, as for closure of bottles containing liquid or solid matter that might be injurious when in unauthorized hands.
  • a specific object is to achieve the above-stated object with a construction in which a correct sequence of independent motions of two parts in a prerequisite for access to the contents of the container.
  • Another object is to achieve the foregoing objects with a simple construction, involving the addition of no parts, beyond the container and its closure.
  • a further object is to provide a closure meeting the above objects and establishing a liquid seal.
  • a specific object is to provide a bottle and cap with integral locking and sealing formations which inherently achieve all the foregoing objects.
  • Another specific object is to achieve the stated objects using resilient deformable action of one of the parts to establish both a resiliently preloaded seal and resiliently preloaded lock retention; more specifically, it is an object to achieve smooth and continuously applicable resilient reaction-force development, over the axial range of relative positions of the parts, in the course of establishing locking and scaling functions.
  • FIG. 1 is an exploded view in perspective showing a bottle, above which closure means of the invention is poised for application;
  • FIG. 2 is an enlarged exploded fragmentary view in eleva tion, certain parts being broken away and shown in section;
  • FlGS. 3, 41, 5 and 6 are views similar to the cap of FIG. 2 to illustrate modifications, PK]. 6 being on an enlarged scale, for a better showing of proportions.
  • the bottle 11 may be of any suitable material but is conveniently of glass, being integrally formed with a reduced neck 12 having a circular axialend opening to be selectively opened and closed by the cap 11.
  • the bottle 10 is shown to be further integral with bayonettype locking formations 13, 13' which project radially outwardly at angularly spaced locations on the neck 12.
  • the cap 11 is of deformable material such as a plastic having good memory, good flexural properties, a low coefficient of friction and relative inertness to most household chemicals; such materials include polypropylene and polyethylene, each of which lends itself to injection molding of the cap 11.
  • the cap 11 is generally cup shaped, comprising an outer cylindrical wall portion 14 which is relatively thick (and therefore relatively rigid) and which telescopically overlaps the neck 12.
  • the portion 14 includes angularly spaced integral inwardly projecting lugs 15, for bayonet-locking engagement with the neck formations 13, 13'.
  • the closed end of the cap is preferably relatively thin, to permit local deformation at a converging taper zone 16, as will be explained in detail.
  • the converging taper 16 is generally frustoconical, having limiting radii R R, which straddle the radius R of the circular opening of the bore 17 of neck 12.
  • Taper 16 is integral with a short cylindrical portion 18 which is connected to outer wall 14 by a short annulus 19; the inner end of taper 16 is closed by an opposing taper 20, substantially matching the axial extent of taper 16. In FIG. 2, or marks the taper angle.
  • cap lugs 15 engage the recesses or undersides 21 of the formations 13, 13' and in this condition the taper 16 has engaged the neck bore 17, and is radially inwardly deformed thereby. Since cap 11 is of low-friction material, the compliant reaction to such deformation produces an axially separating force between neck 12 and cap 11, and this force resiliently loads and retains the bayonet engagement at 15-21. The same resilient action radially out wardly loads the taper 16 in its contact with bore 17, thus establishing a liquid-retaining seal of the contents of the bottle 11).
  • cam means are provided in the formations l3, l3, 15, to permit the resilient deformations to take place in the course of the partial rotation which is involved in setting the bayonet lock.
  • Such cam action is preferably operative for one direction of rotation (lock-setting), and not for the opposite direction of rotation, as will be explained.
  • each of the lugs 15 of the cap is provided with cam ramp 22, of rise D,and the bayonet formations 13, 13' are similarly characterized by cam ramps, as at 23.
  • the ramps 22, 23 will be understood to engage in the course of clockwise cap rotation on the bottle.
  • the axially offset extent D between the open end of neck 12 and the lug-seating surface 21 exceeds the corresponding offset D for initial engagement of cam means 22, 23, and the latter engagement occurs at or just beyond the axial location of initial taper engagement, at 16, 17
  • the bayonet surface 21 is preferably axially offset to a substantial extent D, from the peak of cam 23, to establish a well-defined shoulder 24 against which the back side 24 of lug 15 will interfere, should one attempt to remove a locked cap through purely counterclockwise torque.
  • an open bottle is closed by axially applying the cap 11 at an angular position such that lugs 15 pass between the respective bayonet formations 13, 13'; such axial insertion will be free until initial taper contact at 16, 17.
  • cam means 22, 23 are in sufficient register to engage upon clockwise rotation of cap 11. In the course of such rotation, lug 15 rides up and over the peak of cam 23, against the relatively stiffly compliant yielding compression of the tapered section 16.
  • At least one of the bayonet formations (13) includes an axial wall or rib 25, providing a firm limiting abutment for clockwise or lock-setting rotation.
  • the lock thus set, remains positive and liquid sealing, and is secure against any attempted cap removal through purely counterclockwise (unthreading) torque.
  • the only way to remove the cap 1 1 is by the deliberate further action of axially displacing cap 11 into further overlap with neck 12, until lugs 15 clear the peaks of cams 23.
  • Such axial displacement is against elevated compressional deformation of tapering section 16 and must be held while thereafter rotating cap 11 counterclockwise; such counterclockwise rotation will be limited by rib 25 at a location where cap 11 is freely axially removable.
  • FIG. 3 shows a cap 30 similar to cap 11 except that a central cup-shaped section 31, rather than the tapering section 20, is relied upon to close the small end of the tapering section 32. Parts are otherwise the same as for FIGS. 1 and 2 and therefore need not be further identified.
  • Cup section 31 establishes an enlarged flat central area 33 at the closed end of a substantially cylindrical wall section 34, thus enabling product identification to be formed in or applied to the cap, at area 33. Locking and sealing action are as already described.
  • FIG. 4 another cap 35 is shown wherein the reduced end of the yieldable tapering section 36 is closed by a flat radial surface or panel 37. Again, locking and sealing action are as already described, and the differing external appearance may be relied upon for product identification.
  • a cap 40 with yieldable tapering section 41, is closed by a reverse-taper section 42 which establishes a reference plane or abutment 43, axially offset to the extent D from the closed end of the cap, and thus recessed within the concavity externally presented by the formation 41.
  • Disc 44 is shown as generally cylindrical, of thickness substantially D and with a small radially outward bead 45 near its lower edge.
  • the one-piece molded-plastic cap 50 comprises a cylindrical outer body 51, with integral internal locking formations near the open end; the other end is closed by a first annular portion 52 which extends radially inward and axially downward at an inclination angle [3, a second annular portion 53 which extends substantially axially from the radially inner limit of portion 52, and a third annular portion or taper section 54 which extends radially inward and axially downward (at the relatively gentle taper angle or already defined) to juncture with the flat radial surface or panel 55.
  • sectional thicknesses and sectional extents of the various integrally connected body and bottom parts 51, 52, 53, 54, 55 are chosen and proportioned to achieve a plurality of cooperating functions wherein the axial resultant of resilient reaction forces is smoothly and continuously applicable, over the axial range of relative positions of the parts, in the course of establishing locking and scaling functions.
  • the thinnest wall section occurs at the adjacent wall sections 53, 54 which are relied upon for radially inward deformation;
  • the panel 55 may be as thin as sections 53, 54 but is preferably thicker, to provide a reacting compressional stiffness, for radial reference of the lower (smaller) end of the tapering section 54; and the annular portion 52 is considerably thicker (e.g., substantially twice as thick as the sections 53, 54) to provide (a) a relatively stiffly compliant axial deflection characteristic over essentially the range D of its normal deflection and (b) a firm coaxial positioning reference for the upper end of the thin section 53 (and thus for all the parts thereby suspended, i.e., portions 53, 54, 55).
  • the outer body or wall 51 is of 0.050-inch thickness
  • the section 52 is of 0.030-inch thickness
  • the thin sections 53, 54 are of 0.0l5-inch thickness
  • the panel 55 is of 0.025- inch thickness
  • the angles a and B are of substantially 20 and 15, respectively
  • the axial extent of section 53 is preferably at least substantially the axial extent of section 54.
  • FIG. 6 also indicates a preferred formation of the mouth of the container bore, as indicated by fragmentary phantom outline of neck 12' with a bore 17 having a beveled or chamfered mouth formation 56.
  • the formation 56 is shown as a frustoconical taper extending at a convergence angle 6, from a larger radius R, to a smaller radius R,,, namely the radius of bore 17'.
  • the convergence angle 8 is preferably substantially less than the angle a of cap taper 54, and the radius R, is intermediate the unstressed radii R,, R of the cap 50; also, the axial extent D of the taper 56 is sufficient to assure that under no circumstances will the cylindrical wall portion 53 ever become a plug by entering the cylindrical bore 17', being rather limited only to partial entry into the tapered counterbore or chamfer 56.
  • the angle 6 is substantially 10.
  • initial bottleneck interference strikes taper section 54 at an axially intermediate location, above the plane of panel 55, with a circumferentially continuous, essentially circular, line contact.
  • Axially downward drive of the closure 50 onto the bottle reduces diameter of the juncture between sections 53, 54 causing section 53 to adopt a convergent taper, in approach to the reduced taper of section 54, and also in approach to the counterbore taper 56.
  • the cantilevered suspension of section 52 from wall 51 is stressed axially deflect, within the range D
  • the locus of bottleneck contact shifts axially, with a resulting resiliently loaded wipe action which serves to locally clean the contacting surfaces, for greater assurance of seal effectiveness.
  • the shift of this locus is upward along taper 54 until the juncture 57 between surfaces 53, 54 reaches the outer limit R of the bottle mouth 56; further axial depression of cap 60 on neck 12' causes the circular profile of juncture 57 to ride the tapered counterbore 56, being radially resiliently compressed in the course of such depression.
  • the wipe action involves successive upward and downward strokes as the closure 50 is caused first to ride the peak of earns 23, and then to retract to the axially locked reference or lug-seating engagement at 21.
  • Tamperproof selectively openable closure means comprising a body including a neck with a circular axial-end opening, and a cap for selectively opening and closing said opening, said cap and the exterior of said neck having coacting telescoping parts for removably securing the same, and said cap and the bore of said neck having coacting telescoping parts including radially extending yieldable means having circumferentially continuous resiliently loaded contact with said opening when said cap is in secured position; said cap being of single-piece integral molded-plastic construction, comprising an outer generally cylindrical portion having the means for removable securing to the exterior of said neck, and a closure for which the cross section defines a continuous integral connection of elements between diametrical extremes at one end of said cylindrical portion; said connections including in succession a generally radially inward flange, a generally axially downward flange, a generally downward converging taper at an acute angle to the direction of said axially downward flange, and a closure of the bottom end of said taper; said
  • Closure means according to claim 1 in which the securing telescoping portion of said cap is relatively thick and rigid, the remaining elements of said cap being relatively thin and flexible.
  • Closure means according to claim 2 in which the angle of taper of said configuration is in the order of a.
  • Closure means according to claim 4 in which said cupped formation is generally frustoconical in the opposite direction of taper of said first frustoconical portion.
  • cupped formation comprises a generally cylindrical wall with a generally radial central closure at one end, the other end of said cylindrical wall being joined to said frustoconical portion,
  • Closure means according to claim 1 in which said tapering configuration is substantially frustoconical, and a substantially flat radial wall integrally joined to the small end of the frustoconical portion and closing the same.
  • Tamperproof selectively openable closure means comprising a bottle including a neck with a circular axial-end opening, and a cap for selectively opening and closing said opening, said cap having an outer cylindrical portion having telescoping overlap with said neck, and said neck and cap having bayonet-locking formations at the region of their overlap, whereby first axial and then rotary manipulation are required to secure the cap to the neck; said cap being of single-piece molded-plastic construction and having a closure wall which defines a continuous integral connection of elements between diametrical extremes at one end of said cylindrical portion; said connections including in succession a generally radially inward flange, a generally axially downward flange having a radially yieldable downward end, a generally downwardly converging tapering section at an acute angle to the direction of said axially downward flange and depending therefrom, and a closure of the bottom end of said tapering section; said tapering section having initial interference with the circular neck opening prior to achieving the ultimate axial overlap which represents full securing of
  • closure means in which said bayonet-locking formations include an axial notch at an angular location following an angular region of axial-rise cam action, the axial depth of said notch being effectively less than the effective axial rise of said cam action, said interference occurring substantially at the region of initial cam action, whereby after notch engagement said cap is retained on said neck with radially and axially resilient loading of the seal of said tapering section at the circular end of the neck opening.
  • Selectively openable closure and seal means comprising a body including a neck with a circular axial-end opening, and a cap for selectively opening and closing said opening; said cap being of single-piece molded-plastic construction having open and closed ends and having an outer wall sized to fit over said neck, and said cap and neck having coacting telescoping engagement parts for removably securing the same; the closed end of said cap comprising a relatively thin deformable radially limited and axially more extensive tapering section for seal contact with the end of the neck opening, the radial limits of said section being respectively less than and greater than the radius of the neck opening, means closing the smaller axial end of said section, and axially and radially resilient means connecting said outer wall to the larger axial end of said section.
  • closure and seal means of claim 12 in which said last-defined means comprises a first annular downwardly convergent section, and a second annular generally cylindrical section connecting the first annular section to said tapering section.
  • said first annular section is generally frustoconical, with a slope down from a radial plane; said slope being of such magnitude, over the radial extent between said wall and said cylindrical section as to provide a substantial range of axially compliant suspension of said cylindrical and tapering sections with respect to said outer wall, the compliance of said suspension smoothly rising as a function of approach to a radial-flat condition of said first annular section.
  • Closure means according to claim 1 wherein the axialend opening of said neck is a tapered counterbore of tapered slope less than that of said downwardly converging taper.
  • Selectively operable closure and seal means comprising a body including a neck with a circular axial-end opening having a tapering counterbore at a first acute angle to the axis of the opening, and a cap for selectively opening and closing said opening; said cap being of single-piece molded-plastic construction having open and closed ends and having an outer wall sized to fit over said neck, and said cap and neck having coacting telescoping engagement parts for removably securing the same; the closed end of said cap comprising a relatively thin defonnable closure section including an axially extending downward flange and a generally downward converging tapering flange at a second acute angle to the axis of said cap and therefore to the direction of said axially downward flange, said cap including an integral closure of the bottom end of said tapering flange, said first acute angle being substantially less than said second acute angle, and the radial range of said tapering flange overlapping the radial range of said tapering counterbore; and axial
  • a combined closure-cap and seal construction comprising a single-piece of molded plastic having open and closed ends and an outer generally cylindrical annular wall to flt over a bottleneck in telescoped relation therewith, the bore of said wall integrally including radially inward lug formations for removably securable connection to cooperating neck formations, the closed end of said cap comprising a relatively thin deformable closure section including an axially extending downward flange and a generally downward converging tapering flange at an acute angle to the axis of said cap and therefore to the direction of said generally downward flange, said cap including an integral closure of the bottom end of said tapering flange, and axially resilient means integrally connecting said outer wall to the upper axial end of said section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US101879A 1970-12-28 1970-12-28 Safety-closure device Expired - Lifetime US3613928A (en)

Applications Claiming Priority (1)

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US10187970A 1970-12-28 1970-12-28

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US3613928A true US3613928A (en) 1971-10-19

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US101879A Expired - Lifetime US3613928A (en) 1970-12-28 1970-12-28 Safety-closure device

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US (1) US3613928A (enrdf_load_stackoverflow)
BR (1) BR7108615D0 (enrdf_load_stackoverflow)
FR (1) FR2120055B1 (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777936A (en) * 1972-07-24 1973-12-11 Polytop Corp Safety dispensing closure
US3809276A (en) * 1972-09-27 1974-05-07 Eyelet Specialty Co Plastic bottle and cap construction
US3822811A (en) * 1972-04-10 1974-07-09 Eyelet Specialty Co Safety closure
US3913783A (en) * 1974-01-17 1975-10-21 Alfred Cooper Safety closure cap with retaining feet
US3931891A (en) * 1974-10-11 1976-01-13 Peppler Stanley R K Pill container with pocket
US4143797A (en) * 1975-08-11 1979-03-13 The Procter & Gamble Company Metering dispenser with child resistant, tightly sealing closure
US20040173562A1 (en) * 2003-03-03 2004-09-09 Wolfe Steven R. Child-resistant closure and container package
US20050072124A1 (en) * 2003-10-07 2005-04-07 Jaycox Donald L. Methods and apparatus for shipping medical substances
US20060289377A1 (en) * 2000-02-29 2006-12-28 Tri State Distribution, Inc Reversible Child Resistant Cap and Combination of a Container and a Reversible Child Resistant Cap
US20070012645A1 (en) * 2005-07-14 2007-01-18 Owens-Illinois Prescription Products Inc. Child-resistant closure, package and method of making
US20090095700A1 (en) * 2007-10-07 2009-04-16 Craig Carroll Safety Cap and Container System
US7703617B1 (en) * 2004-11-19 2010-04-27 Rexam Closures And Containers, Inc. Bayonet closure container combination with angled bayonet lugs
USRE42331E1 (en) 2007-06-01 2011-05-10 Lightning Eliminators & Consultants, Inc. Low impedance grounding electrode with universal connections and rapid access cap
US20170369210A1 (en) * 2016-06-23 2017-12-28 Albea Services Perforator cap, in particular for a flexible tube
EP4190714A1 (de) 2021-12-01 2023-06-07 Wirthwein Medical GmbH & Co. KG Verschlusssystem für einen medikamentenbehälter sowie medikamentenbehälter mit einem verschlusssystem

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB796435A (en) * 1955-03-21 1958-06-11 Johan Folke Sigurd Lundmark A device for closing containers
US3435975A (en) * 1967-10-30 1969-04-01 Tamper Proof Tops Ind Ltd Safety closure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR62799E (fr) * 1952-05-07 1955-06-20 Perfectionnements aux capsules d'obturation des flacons avec joint d'étanchéité
FR1161572A (fr) * 1956-10-24 1958-09-02 Perfectionnements aux capsules de bouchage en matière plastique
US3281000A (en) * 1964-08-17 1966-10-25 Lowen Stanley Closure apparatus
US3344942A (en) * 1966-04-05 1967-10-03 Hedgewick Peter Safety cap and container

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB796435A (en) * 1955-03-21 1958-06-11 Johan Folke Sigurd Lundmark A device for closing containers
US3435975A (en) * 1967-10-30 1969-04-01 Tamper Proof Tops Ind Ltd Safety closure

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822811A (en) * 1972-04-10 1974-07-09 Eyelet Specialty Co Safety closure
US3777936A (en) * 1972-07-24 1973-12-11 Polytop Corp Safety dispensing closure
US3809276A (en) * 1972-09-27 1974-05-07 Eyelet Specialty Co Plastic bottle and cap construction
US3913783A (en) * 1974-01-17 1975-10-21 Alfred Cooper Safety closure cap with retaining feet
US3931891A (en) * 1974-10-11 1976-01-13 Peppler Stanley R K Pill container with pocket
US4143797A (en) * 1975-08-11 1979-03-13 The Procter & Gamble Company Metering dispenser with child resistant, tightly sealing closure
US20060289377A1 (en) * 2000-02-29 2006-12-28 Tri State Distribution, Inc Reversible Child Resistant Cap and Combination of a Container and a Reversible Child Resistant Cap
US20080223811A1 (en) * 2000-02-29 2008-09-18 Tri State Distribution, Inc. Reversible Child Resistant Cap And Combination Of A Container And A Reversible Child Resistant Cap
US7967159B2 (en) 2000-02-29 2011-06-28 Tri State Distribution, Inc. Reversible child resistant cap and combination of a container and a reversible child resistant cap
US7571826B2 (en) 2000-02-29 2009-08-11 Tri State Distribution, Inc. Reversible child resistant cap and combination of a container and a reversible child resistant cap
US7021477B2 (en) 2003-03-03 2006-04-04 Owens-Illinois Prescription Products, Inc. Child-resistant closure and container package
US20040173562A1 (en) * 2003-03-03 2004-09-09 Wolfe Steven R. Child-resistant closure and container package
US7036672B2 (en) * 2003-10-07 2006-05-02 Jaycox Donald L Methods and apparatus for shipping medical substances
US20050072124A1 (en) * 2003-10-07 2005-04-07 Jaycox Donald L. Methods and apparatus for shipping medical substances
US7703617B1 (en) * 2004-11-19 2010-04-27 Rexam Closures And Containers, Inc. Bayonet closure container combination with angled bayonet lugs
US20070012645A1 (en) * 2005-07-14 2007-01-18 Owens-Illinois Prescription Products Inc. Child-resistant closure, package and method of making
US8132684B2 (en) * 2005-07-14 2012-03-13 Rexam Prescription Products Inc. Child-resistant closure, package and method of making
USRE42331E1 (en) 2007-06-01 2011-05-10 Lightning Eliminators & Consultants, Inc. Low impedance grounding electrode with universal connections and rapid access cap
US20090095700A1 (en) * 2007-10-07 2009-04-16 Craig Carroll Safety Cap and Container System
US8205762B2 (en) * 2007-10-07 2012-06-26 Craig Carroll Safety cap assembly and container system
US20170369210A1 (en) * 2016-06-23 2017-12-28 Albea Services Perforator cap, in particular for a flexible tube
US11235912B2 (en) * 2016-06-23 2022-02-01 Albea Services Perforator cap, in particular for a flexible tube
EP4190714A1 (de) 2021-12-01 2023-06-07 Wirthwein Medical GmbH & Co. KG Verschlusssystem für einen medikamentenbehälter sowie medikamentenbehälter mit einem verschlusssystem

Also Published As

Publication number Publication date
FR2120055A1 (enrdf_load_stackoverflow) 1972-08-11
FR2120055B1 (enrdf_load_stackoverflow) 1976-06-04
BR7108615D0 (pt) 1973-06-21

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