|Publication number||US3782584 A|
|Publication date||1 Jan 1974|
|Filing date||9 Jun 1972|
|Priority date||9 Jun 1972|
|Publication number||US 3782584 A, US 3782584A, US-A-3782584, US3782584 A, US3782584A|
|Original Assignee||Rich P|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (34), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent [191 Swenson et al.
[' Jan. 1,1974
[ PILL BOX HAVING SAFETY SLIDING CLOSURE  Inventors: Donald R. Swenson, 408 Chelsea Ave, Rockford, 111. 61107; Philip J. Rich, 10351 N. Second St., Roscoe, Ill. 61073  Filed: June 9, 1972  Appl. No: 261,403
 US. Cl. 220/41, 206/42, 215/9  Int. Cl. B65d 43/12  Field of Search 220/41; 206/42;
 References Cited UNITED STATES PATENTS Tapper 220/41 Borin l. 206/42 Boudin 220/41 Primary Examiner-George T. Hall Attorney-Jerry D. Hosier [5 7] ABSTRACT A pill box or similar article includes a body in the form of an open topped rectangular enclosure and a top cover slidably fitted to the body. Wing portions disposed on opposite side walls of the body are resiliently biased outwardly from the side walls to intercept abutments on the cover and normally block movement of the cover from its closed position. The box is opened only by depressing the wing portions into engagement with the side walls of the body simultaneously with a sliding motion of the cover. Other features are disclosed.
17 Claims, 14 Drawing Figures PATENTEDJAN H 3.782.584
' sum 1 0F 2 Y/ l/7 IAN/j 19 FIELD OF THE INVENTION The present invention relates generally to small containers of a type suitable for the carrying of pills such as aspirin tablets or the like. More specifically, the
present invention is directed to a new and improved pill container or the like that is simply and easily opened by adults but which is substantially secure against opening by small children.
SUMMARY OF THE INVENTION It is important for obvious reasons that medicinal containers be secure againstopening by small children, and there are being imposed federal and state regulations to assure that suitable safety standards are met. Such medicinal containers should not, however, be so difficult for adults to open as to amount to a substantial inconvenience or nuisance. Furthermore, the containers must besusceptible of manufacture by mass production techniques and, in this regard, critical tolerance limitations should be avoided which might complicate manufacture and/r render a percentage of the containers unreliable or unsafe in operation.
The container of the present invention satisfies all of the requirements outlined above. The manner of opening the container is not even to an adult readily apparent upon mere inspection. However, clear and unambiguous instructions for opening may be written on the container in just a few words. Also, opening of a container of the invention requires a level of coordination not often found in small children, for example, those in the three to five year age group.
The present container is easily opened by an adult without likelihood of spilling any of the contents as is one of the difficulties with certain prior art containers. The container is also constructed to permit selective dispensing of a desired quantity of items, for example, one, two or three tablets. A special seal structure may be incorporated as an integrally formed part of the container body to assure the purchaser that the package has not been tampered with or opened previously. In
addition, the present container locks in a positive fashion in contrast to the pressure responsive releasable detents or the equivalent of certain prior art structures and thus the present container is secure against 0pening by jarring or vibration. Furthermore, although the present container demands an adults skill and coordination in opening, the container is closed merely by sliding the cover to the closed position. In other words, return movement of the cover demands none of the skill and coordination required for opening.
In accordance with the present invention, a pillbox comprises body means having a body wall and four side walls defining a rectangular enclosure. A first opposed pair of side walls is provided with structure for effecting a sliding and interlocking fit with a top cover and these side walls are further provided with respective wing portions disposed intermediate the ends of the side walls and resiliently biased outwardly therefrom, the wing portions being depressible into engagement with respective ones of the side walls. A cover means effects a sliding and interlocking fit with the body means for providing a slidable top cover for the body means that is movable between open and closed positions. Oppositely disposed abutments on the cover means are provided for engaging respective ones of the wing portions to preclude slidable movement of the cover means from its closed to its open position unless both of the wing portions are depressed simultaneously with slidable motion of the cover means relative to the body means. Other objectives and features of the invention will become apparent tothose skilled in the art upon reading of the following description.
BRIEF DESCRIPTION OF THE DRAWINGS The novel features of the present invention are set forth with particularity in the appended claims. The invention together with further objects and advantages thereof may best be understood, however, by reference to the following description taken. in conjunction with the accompanying drawings in the several figures of which like reference numerals identify like elements and in which:
FIG. 1 is a perspective view, partly in section, of a first embodiment of a pill box constructed in accordance with the present invention;
FIG. 2 is a perspective view of the top cover of the box of FIG. 1;
FIG. 3 is a perspective view of the body portion of the box of FIG. 1, the top cover having been removed;
FIG. 4 is a cross-sectional view taken along lines 44 of FIG. 1;
FIG. 5 is a sectional view taken along lines 5-5 of FIG. 3 and showing one of the resiliently biased wing portions in its normal position;
'FIG. 5a is a sectional view similar to that of FIG. 5 but showing the wing portion in a depressed position;
FIG. 6 is a perspective view of the underside of the container body shown in FIG. 3;
FIG. 7 is an enlarged sectional view taken along section lines 77 of FIG. 6;
FIG. 8 is a perspective view of an alternative and preferred embodiment of the pill box according to the present invention;
FIG. 9 is a perspective view of the body of the pill box with the top cover removed;
FIG. 10 is a perspective view of the top cover of the pill box of FIG. 8;
FIG. 11 is an enlarged detail view of a cover locking mechanism taken along sectional lines 11-11 of FIG. 10; I i FIG. 12 is a perspective view of the underside of the container body of FIG. 9; and
FIG. 13 is an exploded detail view of a seal for the container as seen along sectional lines 13-13 of FIG. 12.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to FIG. 1, there is illustrated a container or pill box according to the present invention and generally designated by the reference numeral 10. The pill box 10 is of the popular miniature size, typically carried in the pocket or purse and suitable for holding about a dozen aspirin tablets or the like. The box 10 comprises a hollow rectangular body portion 12 to which there is slidable fitted a generally planar top cover 14.
From FIG. 3, it may be appreciated that the hollow rectangular body means 12 is formed by a planar bottom wall 16, a first pair of opposed side walls 18, I9 and a second or remaining pair of opposed side walls 21 and 22. The first and longer pair of opposedside walls l8, 19 are each provided with structure for effecting a sliding and interlocking fit with the top cover 14. Although only the side wall 19 is fully visible in FIG. 3, it will be appreciated that the opposite side wall is of an identical construction. Specifically, the side wall 19 includes a tongue portion 19a preferably formed as an outwardly curved continuation of the side wall 19, as may be appreciated most clearly in FIG. 4. The tongue portion 19a which extends the length of the side wall 19 is interrupted at its center by a wing portion 19b that preferably is of rectangular outline with one side integrally formed with the top of the side wall 19 and with the wing portion 19b normally extending outwardly therefrom at an angle of approximately 30, as seen most clearly in FIG. 5.
As will also be appreciated from FIG. 5, the wing portion 19b is compartively thin adjacent its point of attachment to the side wall 19 to provide a flexible hinging of the wing portion that facilitates its easy depression against the side wall 19, as seen in FIG. 5a. It is important that the wing portion 19b as well as the counterpart wing portion 1821 on the side wall 18 (partially visible in FIG. 3) be resiliently coupled to their associated side walls so as to reliably return to the normal position shown in FIG. 5, even after repeated depression. It is presently preferred to manufacture body 12 by injection molding of a suitable and conventional plastic material such as polyethelene, high density polyethelene or polypropylene.
The cover means 14 for the pill box 10, as illustrated in FIG. 2, is of a generally planar rectangular outline corresponding in dimension to the open top of the body 12. A pair of opposed edges of the cover 14 include depending edge portions defining grooves of a contour complementary to the tongue portion 18a and 19a of the side walls 18 and 19 for providing a sliding and interlocking fit between the cover 14 and the body 12. Although only a portion of the depending edge portion 26 is visible in the drawing, it will be understood that it is identical to the edge portion 24 fully visible in FIG. 2. As seen perhaps most clearly in FIG. 4, the depending edge portions 24, 26 wrap partially about the tongue portions 19a and 18a respectively, to prevent the top cover from being lifted off of the body and limiting motion between the body and cover to a sliding movement.
As seen in FIG. 2, one end segment of the edge portion 24 depends considerably below the level of the complementary tongue portion 18a of the body 12 to form a stop abutment 24a. The stop abutment 24a and its counterpart 260 on the opposite side of cover 14 (FIG. 4) are adapted to engage respective ones of the wing portions 19b and 18b so as to normally preclude sliding movement of the top cover 14 from its closed position depicted in FIG. 1 to an open position (not shown). It will be understood that in the open position of cover 14 a portion of the body 12 is uncovered to permit access to the contents of the box.
In order to limit sliding of the cover 14 to a direction in which stop abutments 24a and 260 are moved toward their respective wing portions, one of the remaining pair of opposed edges of the top cover 14 is provided with an integral depending tab portion 28. The tab 28 intercepts the side wall 21 and thus limits sliding movement of the cover to a single direction in which the tab 28 is moved away from the side wall 21.
It is also desired both to yieldably lock .the top cover in its closed position even when'the wings are depressed and to provide a positive yet yieldable stop limiting the extent of removal of the top cover 14 from the body 12. To this end, there is provided a first pair of locking detents 30 in the planar top surface of the cover 14 located adjacent respective ones of the edges 24 and 26 and equidistant from the depending end tab 28. A second similar pair of detents 32 are spaced inwardly of detents 30 by a predetermined distance. In the present embodiment, the top cover 14 is formed by stamping of a metal sheet and detents 30 and 32 are formed by making slight surface depressions in the planar top surface of the cover 14, resulting in corresponding bumps on the undersurface of the cover. These bumps or detents engage the upper edge of the end wall 21 to act as stops for sliding movement of the cover; however, the bumps will ride over the top of the wall 21 with the exercise of moderate force.
Further structural features of the pill box 10 may be appreciated by reference to FIGS. 6 and 7. The bottom exterior of the body 12 supports bracket means for releasably securing a folded paper sheet 33 or similar article against the bottom wall 16. The sheet 33 may include advertisements and/or instructions relative to use of the medicine or other items contained within the box 10. The sheet 33 is secured to the bottom exterior wall 16 of the body 12 by four L-shaped brackets 34, 36, 38 and 40 that may integrally be'formed with the bottom wall. The L-shaped brackets are disposed at spaced locations corresponding to each of the four corners of the rectangular sheet 33. Each of the brackets is of a crosss'ectional configuration as depicted by the crosssectional view of the exemplary bracket 40 in FIG. 7. As there seen, the bracket 40 includes an upright portion of a height corresponding to the approximate thickness of the folded sheet 33 and an inwardly extending terminal lip portion 40a for overlying and captivating the folded sheet against the bottom wall 16. The folded sheet 33 is secured in place by pushing it downwardly against the bracket members so that it snaps into place under the captivating lips of each bracket element. The sheet 33 is removed merely by grasping it with a finger at any one of the four locations intermediate the individual bracket members or, alternatively, by inserting the point of a pencil or the like under the sheet at any one of the aforesaid four locations.
A further feature of the structure of the invention is visible in FIG. 7. Specifically, as there shown, the point of attachment 16a of the bottom wall 16 to the side wall 19 is thin relative to the otherwise uniform thickness of the bottom wall 16. The attachment of the bottom wall 16 to the remaining side walls 13, 21, and 22 of the body 12 is similar to that depicted in FIG. 7. With the body 12 being formed of a resilient molded plastic material, the bottom wall 16 will deflect upwardly toward the top cover 14 as a substantially unitary platform when moderate pressures are applied to the bottom wall. Thus, when the boxes 10 are stacked and packaged for shipment, the bottom walls 16 of the individual boxes will be deflected upwardly by a sufficient distance to captivate the enclosed pills between the bottom wall and the top cover of each box and prevent movement of the pills within the box, and resultant partial disintegration of the pills during transit.
With the pill box assembled as shown in FIG. 1, the box is opened by placing the thumb and forefinger of one hand on respective ones of the opposite wing portions 18b and 19b and by depressing the wings against their associated side walls simultaneously with effecting a relative sliding motion of the top cover and bottom with the thumb and forefinger of the remaining hand. By reason of the locking detent 30, there is initially some resistance to the sliding motion even with the wings depressed, but this is overcome with a moderate force. Once the edge segments defining abutments 24a and 26a have slid over the top of the respective wing portions 1% and 18b, the wings are captivated under the edge segments and the thumb and forefinger may be removed from the wings. The top cover 14 slides easily once the detent 30 has cleared the end wall 21 and until the detent 32 intercepts the end wall 21. It will be recalled that the detent 32 is located so that a desired number of pills, such as a single row, are exposed and accessible when the detent 32 is contiguous the side wall 211. The pill box is easily closed by merely slidably returning the top cover 14 to its closed position. Thus, the skill and coordination required for opening is not needed for closing and the user may effect closing with one hand while holding the pills or reaching for a glass of water with the other hand. The depending end tab 28 prevents the cover from being slid beyond its closed position during return movement.
Although not presently preferred, the box 10 may be constructed with only a single wing portion and lock tab, the other lock tab being omitted entirely or made in the form of a tear-off and disposable seal for the container, as will be understood more clearly upon consideration of the preferred seal described later herein. Also, the body portion 12 and the top l4 may be fitted to one another for relative rotational movement instead of the linear sliding movement described, although again such is not presently preferred particularly when the container is utilized for carrying medication.
A preferred embodiment of a pill box according to the invention is designated generally by the reference number 50 in FIG. 8, while the top cover and body portions are generally designated by the reference numerals 52 and 54, respectively. The pill box 50 is generally similar to the pill box 10 just described except that, for reasons presently to be explained, it is adapted to be opened by slidable movement of the top cover 52 in either direction from its normally closed position. Additionally, the embodiment 50 includes an alternative and preferred form of cover locking mechanism as well as several other features as will now be explained. It will be understood by those skilled in the art that the various structural features described in connection with the present embodiment may be incorporated into the embodiment previously described.
The body portion 54 as viewed in FIG. 9 may be identical to its counterpart 12 in FIG. 3 excepting for the formation of a pair of restraining means 56 and 58 located adjacent opposite opposed ends of the body 54. Accordingly. it will be noted that the body portion 54 includes a bottom wall 60, a first pair of opposed sidewalls 62 and 64, and a second pair of opposed side or end walls 66 and 68. The first pair of side walls 62 and 64 include the previously described tongue and wing portions, exemplified by the visible tongue portion 64a and the wing 64b of the side wall 64.
The restraining means 56 is formed as a pair of wall segments integrally connected to the side walls 62 and 68 to define a small rectangular enclosure of a dimen sion to occupy a portion of a first row of the pills 70. In the present embodiment, the width of the box 50 between the side walls 62 and 64 corresponds to a row of three pills and the restraining means 56 occupies the position of one pill of the row. Similarly, the restraining means 58 is formed as a pair of wall segments integrally connected to the end walls 64 and 66 and occupies a rectangular space corresponding to two pills thereby leaving space for a single pill 70 in the row adjacent wall 66. The restraining means 56 and 58 may be of a height less than the height of the adjacent side walls, it being required only that the restraining means be of sufficient height and peripheral dimension to prevent one of the pills 70 from occupying the same space. The restraining means may also take the form of one or more vertical pins or posts that block the pills from occupying selected positions in the row.
The top cover 52 is likewise generally similar to its counterpart 14 of FIG. 2., but there are several important differences. Specifically, the cover 52 includes in similar fashion to the cover '14 a pair of opposed arouately curved depending edge portions 72 and 74 forming mating grooves for the tongues 64a and 66a of the body 54. Each of the edge portions 72, 74 are further provided with a pair of spaced abutments as exemplitied by theabutments 72a and 72b visible in FIG. 10. The abutments 72a and 72b are spaced from one another by a distance somewhat greater than the width of the body wing portion 64b and the abutments are located along the length of the cover 52 such as to lie on opposite sides of the associated wing portion 64b when the coveris in its closed position, as seen in FIG. 8. The abutments 72a and 72b as well as the counterparts on the edge portion 74 (not visible in the drawing) are positioned to intercept the wing portions and thereby normally preclude relative movement of the top cover 52 and body 54.
The procedure for opening the pill box 50 is exactly the same as that previously described in connection with the pill box 10 except that the box 50 may be opened by sliding the top cover 52 in either direction since in the present embodiment there is no counterpart to the depending stop abutment 28 to preclude movement of the cover in one direction. However, in orderto facilitate a controlled dispensing of the tablets within box 50 it is desired that sliding movement of the cover in either direction be limited to a distance corresponding to the width of one row of pills in the box. To this end, the opposite terminal segments 72c and 72d on the cover edge portion 72 are struck inwardly toward the box side wall so as to intercept the wing portion 64b even when the wing is depressed against the side wall. The edge portion 74 includes similar terminal segments struck inwardly to intercept the associated wing portion, one of the segments 740 being visible in the drawing.
Since the cover means to a positive stop at a distance corresponding to one row of the tablets when slidably moved in either direction from its closed position, the user can selectively dispense one or two tablets 70 into his hand depending on the direction in which the cover 52 is urged. Of course, appropriate instructions (which may simply be the numerals l and 2 in colored blocks adjacent the respective opposite ends of the cover 52) guide the user as to the direction to slide the top cover. The present arrangement precludes spilling of the contents of the box or inadvertent dispensing of a greater number of tablets than desired. This embodiment also includes all of the child proof safety features of the ear lier described embodiment.
A further feature of the invention may be appreciated by reference to FIGS. 12 and 13. As seen in FIG. 12, the underside of the bottom wall 60 may be provided with bracket means in the form of four individual bracket elements 76-78 constructed and located in generally the same manner as their counterparts on the box as earlier described in connection with FIG. 6, the brackets serving to secure a folded sheet 81 to the underside of the box. Accordingly, the bracket structure will not again be described in detail. There is further illustrated in FIG. 12, a lock tab means 80 integrally formed with the wing portion 64 and arranged for precluding opening of the pill box 50 while the lock tab 80 is still affixed to the wing. The lock tab structure 80 is intended to act as a seal to assure a purchaser that the pill box has not been tampered with or opened previously. The lock tab structure 80 comprises, as seen in FIG. 13, a circular bridge portion 80a including diametrically opposed tabs that connect to the side wall 64 and the wing portion 64b respectively, so as to preclude depression of the wing portion 64b into engagement with side wall 64. The bridge 80a is affixed to both the side wall 64 and the wing portion 64b, but the points of connection are very thin and may be broken by a moderate force applied to a stem portion 80b of the lock tab that is joined tothe center of the bridge 80a. The stem portion 80b is normally bent to lie in a plane parallel to the bottom wall 60 and a narrowed neck portion effects a snap fit between the adjacent bracket members 78 and 79 with an enlarged and flattened head portion 800 of the stem extending beyond the neck. The adjacent and facing portions of brackets 78 and 79 include overhanging lip portions for releasably captivating the stem 80b of member 80.
The seal is broken and the package readied for use by lifting the flattened head 800 of the lock tab 80 to unsnap the stem 80b from the bracket 78, 79 and by thereafter pulling on the flattened head to break the points of contact of the bridge 80a with the members 64 and 64b. The lock tab 80 is then discarded, and the pill box is ready for use.
While particular embodiments of the present invention have been shown and described, it is apparent that various changes and modifications may be made, and it is therefore intended in the following claims to cover all such modifications and changes as may fall within the true spirit and scope of this invention.
1. A pill box or similar article comprising:
body means having a bottom wall and four side walls defining a rectangular enclosure, a first opposed pair of said side walls having structure for effecting a sliding and interlocking fit with a top cover and further having respective wing portions disposed intermediate the ends of said first pair of side walls and normally extending outwardly therefrom, said wing portions being resiliently depressable into engagement with respective ones of said first pair of side walls; and
cover means effecting a sliding and interlocking fit with said body means for providing a slidable top cover for said body means movable between open and closed positions and having oppositely disposed abutments for engaging respective ones of said wing portions to preclude slidable movement of said cover means from its closed to its open position unless both of said wings portions are depressed simultaneously with slidable motion of said cover means relative to said body means.
2. The pill box of claim 1 in which said body means is formed as an integral unit and in which said wing portions are of a rectangular configuration each having one side effecting a hinged connection to a respective one of said first pair of side walls at locations adjacent the top of said sidewalls.
3. The pill box of claim 2 in which said'cover means includes a pair of spaced detents for engaging one of the remaining pair of opposed side walls of said body means for, respectively, yieldably locking said cover means in said closed position and blocking movement of said cover means beyond a preselected open position at which only a first row of said pills is exposed.
4. The pill box of claim 3 in which said first pair of opposed side walls include respective elongated tongue portions integrally formed with said side walls adjacent the top of said side walls and extending parallel to the plane of said bottom wall and in which a pair of opposed edges of said cover means includes depending edge portions defining grooves of a contour complementary to said tongue portions for providing a sliding and interlocking fit between said cover means and said body means.
5. The pill box of claim 4 in which said wing portions extend a substantial distance below said tongue portions and in which segments of said edge portions of said cover means depend below said tongue portions of said body means to form respective abutments for engaging said wing portions in movement of said cover means between said open and enclosed positions unless said wing portions are depressed into engagement with said side walls to permit said segments of said edge portions to pass over said wing portions.
6. The pill box of claim 1 in which said cover means is formed of a stamped metal sheet and said body means is an integrally molded plastic structure.
7. The pill box of claim 1 and further including bracket means formed on the exterior surface of said bottom wall for releasably securing a folded paper sheet against said bottom wall.
8. The pill box of claim 7 in which said bracket means comprises four individual bracket members integrally formed with said bottom wall and arranged at the four corners of a rectangle, each of said bracket members having an upright portion of a height related to the thickness of said folded sheet and an inwardly extending terminal lip portion for overlying and captivating said folded sheet against said bottom wall.
9. The pill box of claim 8 in which said bottom wall is sufficiently thin at its points of attachment to said side walls to permit said bottom wall to flex slightly upward toward said cover means under moderate pressure to secure the pills between said cover means and said bottom wall.
10. The pill box of claim 1 in which said wing portions extend a predetermined distance outwardly of the first pair of side walls even when depressed inwardly and in which terminal parts of said depending edge segments are struck inwardly to intercept said wing portions in their depressed positions and block further removal of said cover means from said body means.
11. The pill box of claim 1 and further including lock tab means integrally formed with at least one of said wing portions for precluding opening of said pill box while said lock tab means is affixed to said wing portion, the attachment of said lock tab means to said wing portion being easily severed under modest force to permit opening of said pill box.
12. The pill box of claim 1 in which said cover means includes spaced abutments on either side of each of said wing portions for normally precluding movement of said cover means in either direction from said closed position, said cover means being constructed and arranged relative to said body means for permitting movement of said cover means in either direction from said closed position upon depressing said wing portions and simultaneously sliding said cover means relative to said body means.
13. The pill box of claim 12 in which pills are arranged therein in rows between said first pair of side walls and in which said body means includes restraining means adjacent the remaining opposed pair of said side walls for limiting the rows adjacent said remaining pair of side walls to predetermined different.
14. The pill box of claim 13 in which said wing portions extend a predetermined distance outwardly of the first pair of side walls even when depressed inwardly and in which opposed terminal parts of each of said depending edge segments are struck inwardly to intercept said wing portions in their depressed positions and limit movement of said cover means in eitherdirection from its closed position to a distance corresponding to the width of one row of the pills thereby to permit selective dispensing of one or two pills according to the direction of movement of said cover means. t
15. The pill box of claim 14 and further including bracket means formed on the exterior surface of said bottom wall for releasably securing a folded sheet against said bottom wall.
16. A pill box or similarv article comprising:
body means having a bottom wall and four side walls defining a rectangular enclosure, a first opposed pair of side walls having structure for effecting a sliding and interlocking fit with a top cover and further having a wing portion disposed intermediate the ends of at least one of said first pair of side walls and normally extending outwardly therefrom, said one wing portion being resiliently depressable into engagement with its associated one of said first pair of side walls; and
cover means effecting a sliding and interlocking fit with said body means for providing a slidable top cover for said body means movable between open and closed positions and having an abutment for engaging said one wing portion to preclude slidable movement of said cover means from its closed to its open position unless said one wing portion is depressed simultaneously with slidable motion of said cover means relative to said body means.
17. A pill box or similar article comprising:
body means having a bottom wall and a side wall structure defining an open topped enclosure, said side wall structure being constructed for effecting a sliding and interlocking fit with a top cover and further having at least one wing portion disposed on said side wall structure and normally extending outwardly therefrom, said one wing portion being resiliently depressable into engagement with said side wall structure; and
cover means effecting a sliding and interlocking fit with said body means for providing a slidable top cover for said body means movable between open and closed positions and having an abutment for engaging said wing portion to preclude slidable movement of said cover means from its closed to its open position unless said one wing portion is depressed simultaneously with slidable motion of said cover means relative to said body means.
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|U.S. Classification||220/345.3, 215/209, 206/232, 206/528, 206/807, 220/345.4|
|Cooperative Classification||B65D43/12, B65D2215/02, Y10S206/807|