U.S. patent number 3,768,638 [Application Number 05/223,588] was granted by the patent office on 1973-10-30 for display container.
This patent grant is currently assigned to Eli Lilly and Company. Invention is credited to John W. Clarke.
United States Patent |
3,768,638 |
Clarke |
October 30, 1973 |
DISPLAY CONTAINER
Abstract
A display container is provided with a base receptacle having a
pair of canted walls with an undercut to which a flexible cover
having flanges is interlocked.
Inventors: |
Clarke; John W. (Indianapolis,
IN) |
Assignee: |
Eli Lilly and Company
(Indianapolis, IN)
|
Family
ID: |
22837152 |
Appl.
No.: |
05/223,588 |
Filed: |
February 4, 1972 |
Current U.S.
Class: |
206/461 |
Current CPC
Class: |
B65D
75/32 (20130101); B65D 75/322 (20130101) |
Current International
Class: |
B65D
75/32 (20060101); B65D 75/28 (20060101); B65d
025/00 () |
Field of
Search: |
;312/284 ;220/6R
;206/45.34,78B,78R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Rothberg; Samuel B.
Assistant Examiner: Caskie; John M.
Claims
I claim:
1. A plastic container comprising a receptacle and a cover, said
receptacle having a bottom panel circumscribed by an inclined
retaining wall converging toward said bottom panel and connected
therewith, said retaining wall defining a groove on its inner
surface spaced above said bottom panel, said cover being formed
from an integral flexible sheet material and having a top surface
defining at least one inverted cavity with flanges extending
therefrom by a crease line forming a flexible connection, said
cover flanges being substantially congruent with a portion of said
receptacle retaining wall and having their free edges interlocked
in said groove and their flexible connection biased against said
bottom panel.
2. A container in accordance with claim 1 in which said cover is
transparent.
3. A container in accordance with claim 1 in which said groove has
an upper shoulder inwardly extending into said receptacle.
4. A container in accordance with claim 3 in which the free edges
of said cover flanges butt against an upper shoulder of said
groove.
5. A container in accordance with claim 4 in which a decorative
sheet insert is retained against said receptacle's bottom panel by
said cover's crease lines.
6. A container in accordance with claim 5 in which said receptacle
is integral and formed from plastic sheet material.
7. A container in accordance with claim 6 in which said container
is rectangular with said receptacle's retaining wall comprising a
pair of side components and a pair of end components with said
groove being in said side components.
8. A container in accordance with claim 7 in which cover flanges
are congruent with said receptacle's sidewalls.
Description
BACKGROUND OF THE INVENTION
It has become a general marketing practice to display watch straps,
pens, pencils and similar items in individual display packages
which are frequently hung on wire or peg racks. Inasmuch as the
item being packaged is relatively inexpensive it is essential that
its package be inexpensive and yet sufficiently strong to enable
the manufacturer to ship the article therein without any loss or
breakage to the contents. A variety of package designs has been
developed through the use of plastic materials. In most instances
packages used for containing watch straps and other articles having
substantial density to them have been formed by conventional
injection molding techniques. Although these packages are
relatively inexpensive, they have nevertheless encountered various
cost objections. In addition, injection molded plastic containers
are relatively brittle when formed with extremely thin walls in an
effort to minimize costs. Furthermore, injection molded containers
can contribute substantially to the shipping costs in view of their
weight which sometimes may approach that of the article therein. Of
perhaps more significance is the difficulty in loading and closing
low-cost prior art containers formed from light weight plastic
materials. These frequently require insertion of the article under
elastic tie cords, followed by a difficult end loading technique
that requires careful alignment of several package components.
SUMMARY OF THE INVENTION
My invention provides a simple and inexpensive design for a display
container which may be formed wholly or partially from
light-weight, pressure-formed plastic material. This container uses
a cover formed by conventional pressure-forming techniques which is
semi-flexible and has a pair of flanges. The base of my container
may be also formed from a pressure-formed material or by a
conventional injection molding technique if greater rigidity is
desired. The base has a pair of side walls which are outwardly
bowed or form an obtuse angle with the bottom panel. At the upper
edges of the inclined side walls a pair of flanges are provided
which are each joined to the side walls with an undercut portion
provided there-between. The cover which may be made of a
transparent material and formed to approach the overall
configuration of the article to be packaged has its pair of flanges
flexed against the receptacle's sidewalls and into an interlocking
relationship with the undercuts of the receptacle. The package is
loaded and assembled by merely placing the article in the
receptacle and depressing the cover into its position until its
flanges are seated in the undercut portions of the receptacle.
Thus, a relatively inexpensive container of light-weight material
is provided which may attractively display an article as well as
protecting the article.
DESCRIPTION OF THE DRAWING
FIG. 1 is an exploded perspective view of my display container;
FIG. 2 is a top view of my display container in its assembled form;
and
FIG. 3 is an enlarged cross sectional view taken along line 3--3 of
FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawing my display container comprises a
receptacle base 13 and a cover 15. Both of these elements may be
formed from self-supporting resilient sheet material such as
polystyrene or polypropionate. Conventional thermo-forming
techniques may be used to obtain the desired configuration,
followed by simple trimming operations. However it is to be
understood that at least one of the elements of this container may
be formed from a substantially rigid injection molded material.
Referring to the drawing the receptacle base 13 has a bottom panel
16 integrally connected to a retaining wall which in the
illustrated embodiment comprises a pair of longitudinal sidewalls
18 and a pair of endwalls 19. Extending from the sidewalls 18 are a
pair of horizontal flanges 21 with a somewhat similar pair of
flanges 22 extending from the pair of endwalls 19. It is to be
noted that a cutout or aperture 23 may be formed in one of the end
flanges 22 to provide a means for displaying the container and
contents on a peg. Sidewalls 18 have a pair of grooves or undercut
portions 24 which extend in the particular embodiment along the
full length of the sidewalls and are positioned at the line of
connection between the sidewalls and their respective flanges 21.
These grooves may also include an upper shoulder 25 which extends
slightly into the receptacles cavity.
The cover of my container which may be formed from a transparent
material in order to display the goods therein has a pair of
resilient and flexible flanges 27 which extend along the full
length of the cover and are of a length substantially equal to
sidewalls 18 of the receptacle. An appropriate inverted cavity 29
has been provided to embody a watchstrap and a smaller inverted
cavity 30 has been provided to contain a pair of watchstrap pins.
Flanges 27 on the cover are flexibly connected to the cavity
portions whereby they may flex from their normal horizontally
molded position to an angle coinciding with the slanted receptacle
sidewalls 18. This connection may be obtained by merely providing a
creaseline 31 along the portion where the flexing is to occur. The
width of flanges 27 approximates the inclined height of the
receptacle sidewalls 18. Thus, the cover with its flanges in a
horizontal position, attains a width that is greater than the width
of the cavity within the receptacle 13 and is captured therein.
A decorative insert 33 which may be formed of paper material can be
positioned between the receptacle base and cover with its bottom
panel 35 flush to bottom panel 16 and side panels 36 flush to
sidewalls 18. In the illustrated embodiment panel 33 is of a length
equal to that of the receptacle cavity and of a width equal to the
width of the cover. Thus the material is maintained in position by
the action of cover flanges 27 against sidewalls 18, sandwiching
side panels 36 therebetween. It is also apparent that the
decorative panel may formed without side panels 36 whereby it
consists of only bottom panel 35 which will still be retained in
position without the aid of any adhesive.
In assembling my package the decorative insert may be laid on
bottom panel 16 of the receptacle base 13. The items, such as a
watch band and pins, can be inserted into their respective cavities
in cover 15 while the cover is in an inverted position. Base 15
with decorative insert 33 may then be placed over the cover 15 and
with a simple depressing action the cover flanges 27 will be forced
downwardly and into the grooves 24 against shoulders 25 on the
sidewalls 18. As a result of the creaselines 31 which butt against
bottom panel 16 and which tend to cause flanges 27 of the cover to
slant upwardly, coupled with the fact that the overall width of the
cover is greater than the internal width of the base 15, the cover
is securely interlocked with grooves 24. This interlocking effect
provides a structurally strong and secure package which will not
accidentally disassemble even when relatively heavy items such as
ball point pens and mechanical pencils are packaged therein.
Inasmuch as the decorative panel 33 has a width that at least
equals the width of bottom panel 16 it is retained by the pressing
action of cover 15 along its crease lines against base 13.
In order to remove an item from this package one need merely
distort a flange 21 away from its groove 24 and lift the cover out.
In view of the flexibility of all of the involved components it is
apparent that cover 15 is not in any way damaged or destroyed by
its removal from receptacle 13 and therefore the package may be
disassembled a number of times if so desired. Although the
illustrated embodiment relates to a rectangular container it is
apparent that the principles of my invention are readily adapted to
other shapes such as a circular or triangular package.
* * * * *