U.S. patent number 3,627,166 [Application Number 04/859,796] was granted by the patent office on 1971-12-14 for safety can.
This patent grant is currently assigned to Container Corporation of America. Invention is credited to Richard T. Walter.
United States Patent |
3,627,166 |
Walter |
December 14, 1971 |
SAFETY CAN
Abstract
A tubular container having an end wall with a removable central
portion, the latter having the exposed edge thereof guarded by a
liner extending along the wall of the container after the central
portion has been removed. The liner may be separable from the
container body, and may be folded upon itself, so that the inner
face of the liner may extend inward of the exposed edge an extra
amount to provide a more effective guard than that incident to the
thickness alone of the liner.
Inventors: |
Walter; Richard T. (Norristown,
PA) |
Assignee: |
Container Corporation of
America (Chicago, IL)
|
Family
ID: |
25331736 |
Appl.
No.: |
04/859,796 |
Filed: |
September 22, 1969 |
Current U.S.
Class: |
220/270; 229/4.5;
220/23.9; 220/62.2 |
Current CPC
Class: |
B65D
25/16 (20130101); B65D 17/4011 (20180101) |
Current International
Class: |
B65D
25/16 (20060101); B65D 25/14 (20060101); B65d
017/24 (); B65d 025/14 (); B65d 025/34 () |
Field of
Search: |
;220/27,54,48,63,65,90.6
;229/14 |
References Cited
[Referenced By]
U.S. Patent Documents
|
|
|
3527377 |
September 1970 |
Colby et al. |
|
Primary Examiner: Hall; George T.
Claims
I claim:
1. In a protective arrangement for a container having a container
body and a closure, wherein the closure is characterized by a panel
which is removed to provide a remaining closure portion presenting
a raw edge susceptible of injuring a user:
a. the improvement in said protective arrangement which
comprises;
b. a liner for said container body extending along the wall of said
container body and adjacent the lower side of said remaining
closure portion;
c. said liner being deformed to present a thickness which is
greater than the thickness of the material of the liner;
d. said liner being folded upon itself adjacent said remaining
closure portion to present a double thickness thereof extending
inward of said raw edge and affording protection upon removal of
said closure.
Description
This invention relates to fiberboard or metal containers of the
type commonly used for the packaging of food stuffs and many other
articles. A growing trend in the production of these containers has
been the provision of an end wall, the central portion of which may
readily be detached and removed from the remaining portion.
A problem which has arisen in connection with this feature is the
danger of cuts and abrasions to one inserting his hand into the
container, caused by the contact with the free, raw edge of the
remaining portion of the container end which is exposed after the
central portion has been removed.
It is an object of this invention to provide a protective structure
for shielding or covering the exposed raw edge to prevent such
injuries.
A more specific object of the invention is the provision, in a
container of the type described, of a protective structure disposed
under the open end of the container and projecting slightly
inwardly beyond the raw edge of the container closure which is
exposed when the removable portion is detached therefrom.
FIG. 1 is a perspective view of a container embodying features of
the invention;
FIG. 2 is a fragmentary plan view of the container top closure
illustrated in FIG. 1;
FIGS. 3, 4 and 5 are perspective views showing the steps in forming
a liner element for the container of FIG. 1;
FIG. 6 is a detailed perspective view showing the liner element in
position in the container of FIG. 1;
FIG. 7 is a schematic view showing a step in preparing another form
of liner element according to the invention;
FIG. 8 is an exploded perspective view showing the liner element of
FIG. 7 being inserted into a container body;
FIG. 9 is a perspective view showing another form of liner element
in situ in a container, and
FIG. 10 is a perspective view of a liner element for the embodiment
of FIG. 9.
A safety can having a liner element therein is referred to by the
reference numeral 15 is formed from either fiberboard or metal, and
has upper and lower end walls 16 and 17 secured to a container body
18. End wall 17 has an outer annular flange 19 crimped to a body 18
in the usual fashion and a panel portion 21 detachably connected to
the flange 19 along a weakened score line 22.
A pull tab 20 permits panel portion 21 to be pulled up and detached
from flange 19 at score line 22. When panel portion 21 is removed,
a free edge 23 of raw metal is exposed. This presents the danger of
cuts to the hand of a person upon contact therewith, but for the
provision of structure which now will be described.
A more specific object of the invention is the provision, in a
container of the type described, of a protective structure disposed
under the open end of the container and slightly inwardly beyond
the exposed raw edge of the container closure when the removable
portion is detached therefrom.
A liner construction, referred to by reference numeral 25, for the
interior of container body 18 is preferably formed from paper
comprised of a fluted ply and may be made of glazed paper of a
liner variety. The flutes of layer 26 give a certain amount of
resiliency and flexibility to the liner 25.
The liner is formed in such a fashion that any dimension between
spaced portions thereof is less than the corresponding dimension
between cut line 23. Liner 25 is accordingly cut along a line 28 on
the fluted ply 26, and scored along a line 29 on ply 27. Liner 25
is folded along score line 28 to provide a double thickness of
liner 25 along the top thereof, as seen in FIG. 5.
When liner 25 is inserted in container body 18, the raw edge 23 is
guarded thereby when central panel 21 is removed as seen more
clearly in FIG. 6.
In FIG. 7 there is shown another embodiment referred to by
reference numeral 25A. A hot melt adhesive applying head 31 applies
a strip of hot melt 32 to film 27, liner structure 25A being formed
into a cylinder as seen in FIG. 8 and inserted into container body
18. By reason of the dimension of glue strip 32, liner 25A has
flutes 26 thereof providing protection against raw edge 23.
Referring to FIGS. 9 and 10 there is shown another embodiment
indicated by reference numeral 25B. In this form spots 33 of hot
melt are applied to ply 27, enabling the liner 25B to be held in
place to the interior of container body 18.
As with the embodiment of FIG. 7, the dimension of spots 33 and the
flutes 26 afford protection against raw edge 23.
It will be seen from the description foregoing that the liner
protects users from the sharp, raw edge remaining after removal of
panel 21. The structure shown makes unnecessary expensive moulded
protection rings. Moreover, the liner structure has the property of
absorbing shock to protect fragile food items such as potato chips,
or the like, the liner having both flexibility and resiliency.
* * * * *