US3848761A - Child-proof closures - Google Patents
Child-proof closures Download PDFInfo
- Publication number
- US3848761A US3848761A US00372816A US37281673A US3848761A US 3848761 A US3848761 A US 3848761A US 00372816 A US00372816 A US 00372816A US 37281673 A US37281673 A US 37281673A US 3848761 A US3848761 A US 3848761A
- Authority
- US
- United States
- Prior art keywords
- outer sleeve
- sleeves
- closure
- container
- sleeve
- 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 - Lifetime
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Classifications
-
- 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
- B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
- B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
- B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
- B65D50/045—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
- B65D50/046—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring and such deformation causes the disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation
Definitions
- closures have two principal parts; an inner sleeve for engagement with the neck of the container, e.g., screw threads and an outer sleeve concentric with, longitudinally superimposed outside of, and releasably engaged with the container, by means of ratchet teeth or other forms of interfering projections on the outer sleeve and container respectively.
- ratchet teeth are employed to permit the closure to be re-attached to the container without hindrance.
- the two sleeves are resiliently joined at some point along their common extent for joint rotating movement. Force applied axially to the outer sleeve will release the same from locked engagement with the container and the closure is then free for unscrewing.
- the present specification discloses improved means for resiliently joining the two sleeves to permit relative axial movement there between while providing for joint rotation of the sleeves as a unit.
- the present invention relates to improvements in the flexible connection between the two sleeves whereby flexure is distributed over a substantially greater distance thus to permit adequate transfer of torque applied to the outer sleeve to the inner sleeve and, at the same time, allow easier disengagement of the two sets of projections upon application of a much lower value of axially-directed tugging force.
- the rigidity in the flexible connection found adequate to foil a childs efforts to remove the closure can be readily incorporated without rendering the device so stiff as to interfere with operation by an adult.
- the inner and outer sleeves are joined by a plurality of annular segments, each of which may be regarded as a beam extending from one point on the perimeter of the outer sleeve to another point on the perimeter of the inner sleeve, which is angularly displaced therefrom.
- the segments bend throughout their length in a manner similar to the behaviour of a cantilever beam.
- the fixed end of the beam is the place of attachment of the segment to the latter being axially restrained by its engagement with the neck of the container, and the deflecting end of the beam is where the segment is attached to the outer sleeve and to which the tugging force is applied.
- FIG. 1 is a top plan view of a closure embodying the principles of the invention, showing the closure secured to the container;
- FIG. 2 is a view similar to FIG. 1 but with the closure removed;
- FIG. 3 is a bottom plan view of the closure
- FIG. 4 is a cross section taken on the line 4--4 of FIG. 1, the closure being in fully-tightened position;
- a closure 10 preferably molded in one piece of resilient, but generally shape-retaining plastic composition, e. g., polyethylene, polypropylene and the like.
- the closure comprises an inner sleeve 12 having an internal thread 13 mating with a corresponding thread 14 formed on the neck 15 of the bottle 16, and an outer sleeve 21, both sleeves being concentric with the neck 15.
- the two sleeves depend from a top 23 which may have any desired configuration on the upper surface thereof which is within the flexible segments to be described, e.g., crowned, and likewise as to the outer surface of the sleeve 21 which preferably has knurling or other form of discontinuous surface for implementing gripping by the fingers.
- a gasket (not shown) of paper or other medium may be interposed between the lower face of the top 12 and the rim of the neck 15.
- the outer sleeve 21 is provided with a plurality of projections 31, e.g., ribs, which have a transverse cross section best seen in FIG. 3, i.e., of hooked form. Although only the lower portion of these ribs is utilized, fabrication of the molds and stripping of the piece part from the mold is facilitated by so doing. These projections cooperate with hook-like abutments or projections 3333 outstanding from the bottle 16 (FIGS. 2 and 4). Thus, as the closure is screwed clockwise on the neck 15 (FIG. 2) the projections 31 ride or click over the projections 3333 until the closure makes a tight seal on the neck.
- projections 31 ride or click over the projections 3333 until the closure makes a tight seal on the neck.
- the top 23 is slotted, as shown, to define a plurality of flexible straps or ligaments 41.
- the straps have an arcuate configuration; specifically, circular.
- other configurations of strap may be used provided that the same may flex in a direction which is substantially axially of the closure.
- the straps are alternated. The members of each pair of adjacent straps are merged at one end into the top 23 at a central point 42.
- each strap is merged into the top 23 radially outwardly of the strap 41.
- an outer annular portion 46 of the top 23 carries the sleeve 21 and that this, by reason of the straps intermediate the two sleeves, has a flexible connection with the sleeve 12. Accordingly, an upward and sustained tug on the sleeve 21 will release the teeth 31 from the abutments 33 to permit unscrewing of the closure (FIG. 5). Obviously, both the axial and rotational forces occur virtually concurrently. An adult will have the strength and intelligence to carry out this dual operation; a child, by reason of his immaturity, limited strength and poor coordination is not likely to succeed.
- the straps 41 Since, when-axial force is applied, the straps 41 will bend along a distance which extends arcuately over some appreciable angle, the required axial displacement of the outer sleeve 21 may be produced with far less effort than similar closures heretofore known. Stated otherwise, the invention arrangement can be made as relaxed or as stiff as the circumstances dictate without increasing the diameter of the closure. The degree of stiffness is readily varied by change in the transverse cross section and dimensions of the strap and/or the kind of material employed.
- FIGS. 6 and 7 show a modified form of the closure wherein the outer sleeve 21a is considerably foreshortened in height and the sleeve 12a forms an upward extension thereof. This alternative leaves the mechanical function unchanged but is somewhat more compact and esthetic.
- FIG. 6 also shows a modified form of strap 41a, the construction and function of which is believed to be clear in view of the description of the straps 41.
- both forms of closure shown and described have the important advantage that they may be attached to the container by the rotating chuck of conventional capping machines, there being no exterior protrusions to interfere.
- a container having a screwthreaded neck and a closure for said neck, said closure comprising an inner sleeve having an internal screw thread engageable with said neck thread for attachment and removal of the closure, an outer sleeve exteriorly of said inner sleeve, concentric with, spaced therefrom and connected thereto for joint rotation of both sleeves, said outer sleeve having at least one internal projection and said container having at least one external projection selectively abuttable with said outer sleeve projection when the closure is rotated on the neck to open condition, said projections having respective configurations allowing non-abutting rotation of the outer sleeve relative to the container only when the closure is rotated to closed condition, the means connecting said two sleeves adapted to permit axial movement of the outer sleeve to disengage the projections, the improvement in which said joining means comprises a plurality of resiliently deformable, elongated straps located in the annular zone defined between the two sleeves, one end of each strap being joined to the outer s
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00372816A US3848761A (en) | 1973-06-22 | 1973-06-22 | Child-proof closures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00372816A US3848761A (en) | 1973-06-22 | 1973-06-22 | Child-proof closures |
Publications (1)
Publication Number | Publication Date |
---|---|
US3848761A true US3848761A (en) | 1974-11-19 |
Family
ID=23469746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00372816A Expired - Lifetime US3848761A (en) | 1973-06-22 | 1973-06-22 | Child-proof closures |
Country Status (1)
Country | Link |
---|---|
US (1) | US3848761A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3934744A (en) * | 1974-10-03 | 1976-01-27 | Illinois Tool Works Inc. | Closure assembly |
US3937325A (en) * | 1974-08-05 | 1976-02-10 | International Business Machines Corporation | Cartridge with lock stabilization |
US3951291A (en) * | 1975-09-10 | 1976-04-20 | Libit Sidney M | Child-resistant container closure |
US4606893A (en) * | 1984-12-11 | 1986-08-19 | Olin Corporation | Swimming pool chemical dispenser |
US5035341A (en) * | 1990-10-31 | 1991-07-30 | Continental White Cap, Inc. | Closure cap having tamper indicating means |
US5119963A (en) * | 1990-06-29 | 1992-06-09 | Continental White Cap, Inc. | Mechanical button and button enhancement techniques |
US5836467A (en) * | 1997-05-22 | 1998-11-17 | Rexam Plastics Inc. | Double-shell closure having an arcuate groove |
US5836466A (en) * | 1997-05-22 | 1998-11-17 | Rexam Plastics, Inc. | Safety closure and container assembly |
USD419451S (en) * | 1998-09-04 | 2000-01-25 | Rexam Plastics Inc. | Safety closure having oversized thumbpads |
USD421223S (en) * | 1998-09-04 | 2000-02-29 | Rexam Plastics Inc. | Slotted safety closure having oversized thumbpads |
USD421389S (en) * | 1998-09-04 | 2000-03-07 | Rexam Plastics Inc. | Safety closure having a lug window |
USD426159S (en) * | 1998-09-04 | 2000-06-06 | Rexam Plastics Inc. | Safety closure having oversized thumbpads |
US20090068674A1 (en) * | 2001-08-29 | 2009-03-12 | Hexal Pharma Gmbh | Method and device for preparing a sample of biological origin in order to determine at least one constituent contained therein |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3422978A (en) * | 1967-07-07 | 1969-01-21 | Whitney Blake Co | Self-locking bottle cap |
US3685676A (en) * | 1970-10-02 | 1972-08-22 | Sunbeam Plastics Corp | Double shell child-proof bottle cap |
-
1973
- 1973-06-22 US US00372816A patent/US3848761A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3422978A (en) * | 1967-07-07 | 1969-01-21 | Whitney Blake Co | Self-locking bottle cap |
US3685676A (en) * | 1970-10-02 | 1972-08-22 | Sunbeam Plastics Corp | Double shell child-proof bottle cap |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3937325A (en) * | 1974-08-05 | 1976-02-10 | International Business Machines Corporation | Cartridge with lock stabilization |
US3934744A (en) * | 1974-10-03 | 1976-01-27 | Illinois Tool Works Inc. | Closure assembly |
US3951291A (en) * | 1975-09-10 | 1976-04-20 | Libit Sidney M | Child-resistant container closure |
US4606893A (en) * | 1984-12-11 | 1986-08-19 | Olin Corporation | Swimming pool chemical dispenser |
US5119963A (en) * | 1990-06-29 | 1992-06-09 | Continental White Cap, Inc. | Mechanical button and button enhancement techniques |
US5035341A (en) * | 1990-10-31 | 1991-07-30 | Continental White Cap, Inc. | Closure cap having tamper indicating means |
US5836467A (en) * | 1997-05-22 | 1998-11-17 | Rexam Plastics Inc. | Double-shell closure having an arcuate groove |
US5836466A (en) * | 1997-05-22 | 1998-11-17 | Rexam Plastics, Inc. | Safety closure and container assembly |
WO1998052839A1 (en) * | 1997-05-22 | 1998-11-26 | Rexam Plastics, Inc. | Double-shell closure having an arcuate groove |
USD419451S (en) * | 1998-09-04 | 2000-01-25 | Rexam Plastics Inc. | Safety closure having oversized thumbpads |
USD421223S (en) * | 1998-09-04 | 2000-02-29 | Rexam Plastics Inc. | Slotted safety closure having oversized thumbpads |
USD421389S (en) * | 1998-09-04 | 2000-03-07 | Rexam Plastics Inc. | Safety closure having a lug window |
USD426159S (en) * | 1998-09-04 | 2000-06-06 | Rexam Plastics Inc. | Safety closure having oversized thumbpads |
US20090068674A1 (en) * | 2001-08-29 | 2009-03-12 | Hexal Pharma Gmbh | Method and device for preparing a sample of biological origin in order to determine at least one constituent contained therein |
US20110212517A1 (en) * | 2001-08-29 | 2011-09-01 | Michael Werner Dahm | Method and device for preparing a sample of biological origin in order to determine at least one constituent contained therein |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LINDAUER HENRY D., GLENCOE, IL Free format text: ASSIGNS TO EACH ASSIGNEE THE PERCENTAGE OPPOSITE THEIR RESPECTIVE NAMES;ASSIGNORS:LIBIT SIDNEY M.;NEWBY A. WESLEY;REEL/FRAME:004227/0135 Effective date: 19821123 Owner name: HENRY HARRY H., GLENCOE, IL Free format text: ASSIGNS TO EACH ASSIGNEE THE PERCENTAGE OPPOSITE THEIR RESPECTIVE NAMES;ASSIGNORS:LIBIT SIDNEY M.;NEWBY A. WESLEY;REEL/FRAME:004227/0135 Effective date: 19821123 |
|
AS | Assignment |
Owner name: LIBIT, SIDNEY M., 441 LAKESIDE TERRACE, GLENCO., I Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HENRY, HARRY H.;LINDAUER, HENRY D.;REEL/FRAME:004777/0162 Effective date: 19871027 Owner name: LIBIT, SIDNEY M.,ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HENRY, HARRY H.;LINDAUER, HENRY D.;REEL/FRAME:004777/0162 Effective date: 19871027 |