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Патент USA US3088645

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May 7, 1963
B. J. STEINKAMP
3,088,635
TAMPER-PROOF COVER FOR PRESSURIZED CONTAINERS
FOR DISPENSING LIQUIDS AND POWDERS
Filed Oct. 16, 1961
BERNARD
BY
INVENTOR
J. STE/NKAMP
Wm
ATTORNEY
United States Patent
1
3,088?35
Patented May 7, 1963
2
ing a removable closure embodying the present invention.
3,088,635
TAMPER-PRO0F COVER FOR PRESSURIZED
CONTAINERS FUR DISPENSING LIQUIDS
AND POWDERS
Bernard J. Steinkarnp, Baltimore, Md., assignor to The
Eastern Cap and Closure Company, Baltimore, Md., a
FIGURE 2 is a sectional view of the protective cover in
assembled relation with a conventional pressurized dis
pensing container, taken along line ‘2--2 of FIG. 1.
FIGURE 3 is an enlarged side elevation of the pro
tective cover of this invention.
FIG. 4 is a view to larger scale, looking down into the
interior of the protective cover.
Filed Oct. 16, 1961, Ser. No. 145,125
FIG. 5 is a partial sectional view, enlarged, taken along
5 Claims. (Cl. 222—182)
10 line 3—3 of FIG. 1.
In the embodiment illustrated in the drawing, a low
This invention relates to an improvement in protective
pressure metal container 1, formed at its upper end into
cover or cap for containers of the type employed for dis
a reduced neck portion 2 terminates in a dispensing valve
pensing liquids, powders, and the like by gas, retained
unit. There is, as part of this mentioned valve unit, an
under pressure, wherein the cover is tamper-proof. Such
corporation of Maryland
containers with their valve structures are frequently re
ferred to as “aerosol” type dispensing containers.
It is an object of the present invention to provide a
protective cover or cap for pressurized dispensing con
tainers, which cover is relatively dii?cult to remove from
the container the ?rst time, and even the ?rst several
times.
It is an additional object of the present invention to
provide a protective cover or cap for pressurized dis
15 nular top 3; the top 3 is swaged radially outwardly within
the said neck. The top 3 is formed by blanking sheet
metal and forming around its edge an .annular rim 4
terminating in a downwardly-presented peripheral side
wall 5; the annular rim is sometimes termed a neck ring
also. The circular raw edge of this side wall 5 bears the
numeral 6. At the center of the annular top 3 of the
valve, there is provided along a vertical axis a discharge
valve designated by the numeral 7. The parts, other
than the discharge valve are often referred to as the
pensing containers, which can be readily pried oil of such
cup.
containers by suitable, yet simple mechanical instrument, 25 valve
Pressure containers of this type are conventional and
but will otherwise remain ?rmly in place in position on
do not form a part of my invention. Such containers are
the container.
of a simple variety .and are customarily employed for
It is a further object of the present invention to pro
dispensing liquids, powders and the like by gas under
vide a cover for a pressurized dispensing container that
pressure.
is purposely quite di?icult to remove, thereby preventing
While I have illustrated a particular dispensing valve
tampering with the assembly, the loss of said covers, or
unit 8 associated with the container 1, it will be under
switching of them to the wrong containers, etc. in stores,
stood that other forms of such valve cup unit that have
on the part of curious individuals or well-intentioned,
the
downwardly projected side wall terminating in .a
prospective purchases of the products held by the said
containers. Also, because my cover is quite di?’icult to 35 circular edge may be employed.
As shown in detail in the ?gures of the drawing, the
remove by children or juveniles, it will tend to decrease
accidental injuries to them through inhaling the vaporized
protective cover or cap of my invention comprises a
circular top portion 10 having a downwardly extending
cylindrical skirt 11. The circular top is usually paneled
their eyes. By being purposely difficult to remove, this
will prevent the replacement of the protective covers by 4,0 as shown, but may be entirely ?at, domed-shaped, part
domed, or could be slightly concave in fact; it would
shoppers upon the wrong pressurized containers; this act
have to clear the top part of the spray unit on the con
has been troublesome, where paints of various colors are
tainer naturally. The skirt 11 is integral with the top
being sold in the retail trade in “aerosol” type dispensing
material from the containers or by the spray contacting
portion, and extends vertically downwardly. The bottom
containers.
It is yet another object of the present invention to 45 edge of the skirt is formed into a straight curl or bead
(rolled edge) 12. Into the bottom rolled edge 12 which
provide novel cover or cap for “aerosol” type containers
is circular, there has been formed a plurality, preferably
that can ge formed from metal by inexpensive operations,
three (3) in total number of pairs, of studs, bearing the
and by one step, namely .a stamping operation, upon the
numeral 13 in the drawing. The magni?cation in FIG
conventional standard cap or cover for such dispensing
containers currently employed in the trade.
50 URES 4 and 5 clearly shows the inwardly protruding
projections. It has been determined that three pairs of
It is a still further object of the present invention to
these studs are best, i.e. secure the cover or cap to the
provide a protective cover for “aerosol” type containers,
which cover because it is relatively di?icult to remove the
?rst few times from the said container, will prevent the
discharge of some of the contents of said container by
container more securely; two pairs are the least satis
factory. These stud pairs can be formed in the bottom
straight curl or bead by the use of a die. The pairs of
studs are formed by a double pointed chisel-shaped tool
after the bottom curl or bead has been produced. From
customers in the store. Damage or detracting from the
appearance of the upper part of the container sometimes
other ?gures of the drawing, such as FIGS. 1 and 5, there
results from escaping spray.
can be perceived three sections 14 in the circular bottom
‘It is a more speci?c object of the present invention to
provide a protective cover for pressurized dispensing con 60 rolled edge 12, which are covex with reference to the
said rolled edge 12 when viewed by a reader in FIGURES
tainers that has a series of spaced studs protruding from
1 and 3. Each pair of studs is located at the highest
the inside of said cover, to engage the lower circular
portion of the said covex region.
edge of the downwardly projecting side wall of the valve
When the protective cover or cap ‘9 is pressed down
cup, and the said cover also having a series of convex
sections whereby an instrument can be inserted to pry 65 manually after it has been centered over the dispensing
valve unit 8, each pair of these studs 13 rides over and
up the said cover from the container; the force disengages
snaps under the raw edge 6 of the downwardly presented
the studs from the contact below or beneath the lower
peripheral side wall 5. Thus, the protective cover 9 is
edge of the side wall of the cover’s valve cup.
held very ?rmly to the container by friction ?t of the’ in
The above and other advantages of my invention will
become apparent from the following speci?cation and the 70 side of the cover with the peripheral side wall of the valve
accompanying drawing in which:
FIGURE 1 is an elevational view of a container bear
unit, and also by the studs 13 engaging tightly beneath
the raw edge 6 of the peripheral side wall 5 on the con
3,088,635
3
4
.
tainer. From FIG. 1, it can be seen that there is a space
15 between the bottom rolled edge 12 at each convex sec
tion and the top end of the reduced neck portion 2, bear
ing the numeral 16. The plurality of convex sections,
numbered 14 in the drawing, are approximately equally
spaced. In the present invention, there is a different type
of cooperation between the protective cover and dispens
ing container than is obtained in friction ?ts found on
some systems of protective covers with pressurized dis
pensing containers or with the cover and open top con
tainer used for paste shoe polish, or with units holding
Furthermore, some of the liquids in the pressurized dis
pensing containers are somewhat toxic, particularly in the
limited, somewhat static air space of a store‘. And there
is perhaps an even greater danger to juveniles because of
possible contact of the fluid in the containers with their
eyes. And also, the top of the dispensing container may
become fouled by released ?uid.
It is a simple matter for the store-keeper or his em
ployees to furnish the buyer with a small opener, or even
10 pry the cover from an aerosol container, and show how to
operate the dispensing valve unit, and thus hoW to spray.
baking powder.
Because of the added difficulty that the use of my protec
As mentioned previously three pairs of studs at regu
tive cover entails to gain access to the spraying unit of
larly spaced intervals on the rolled edge of the protective
the container, the shoppers and the curious minded indi
cover of the present invention gives the maximum bene?t. 15 viduals will not go to the extra trouble to pry oif the caps
Three pairs have been determined to be better practically.
from the aerosol containers, i.e. in the stores. The use
Four, live, or even six regularly spaced pairs of these studs
of my simple, economically produced, protective cover,
make the cover even tighter.
above described in detail, eliminates such troubles in the
With the exception of the aforesaid mentioned convex
retail trade as listed supra.
sections 14, the circumferentially rolled edge of the pro
Furthermore, a purchaser familiar with its ?rm resist
tective cover rests upon the substantially semi-?at circular
area 16 shown in the drawing on the neck beneath the curl
ance to manual removal is assured by the feel of such
positive retention that the cover has not theretofore been
removed from the aerosol container. It will take a pry
12. Any of the convex sections 14 afford the means
whereby the protective cover can be removed from the
ing action under one of the convex areas to un-seat the
pressurized dispensing container 1. When it is desired 25 cover from the container, where the lower edge of the
to remove the protective cover or cap 9 from the pres
downwardly projecting side wall of the valve unit is raw
surized dispensing container 1, the operating end of a
and the series of stud pairs that grip underneath the said
screw-driver, or the rounded end of a small bottle-opener,
raw edge are each un-used. It is an assurance to the pur
or the handle end of a spoon, or various other suitable,
chaser of the assembly spray unit.
While I have described and illustrated one preferred
embodiment of my invention, it will be understood that
modi?cations and variations of the invention herein dis
closed may be made within the scope of the appended
claims and without departing from the spirit of the inven
small, simple-in-construction mechanical devices can be 30
inserted under any one of the convex sections 14; and
by twisting the screw driver or using the lever action of
the bottle opener or spoon, utilizing surface 16 of the
neck as the locus for the fulcrum, the cover 9‘ will be
dislodged.
35 tion.
When the valve unit 8 with its downwardly-presented
I claim as my invention:
peripheral side wall is new, hence the edge 6 is raw (not
1. For use with a cylindrical container having a re
smooth), the spaced pairs of studs 13 not only engage
duced neck portion terminating in a discharge valve unit,
but very ?rmly grip beneath the said raw edge 6. It is
the valve cup of which has an annular rim terminating
practically impossible for the average person to disen 40 in a downwardly-presented peripheral side wall having
gage the protective cover from the pressurized dispensing
a circular raw edge, a metallic protective cover for re
container 1 by holding the latter with one hand and pull
movable securement to said cylindrical container, com
ing up on the cover with the other hand. After the said
prising a circular top, a cylindrical skirt element integral
cover has been mechanically disengaged, as explained
therewith and extending substantially vertically downward
supra, several times, there results wearing action on both 45 ly from the outer'edge of said top, said skirt terminating
the cooperating raw edge and the studs; and as a result,
in a circular outwardly rolled edge, there being a plurality
the cover can thereafter be removed by the two hands
of convex sections approximately equally spaced in said
alone of many individuals. This is, furthermore an ad
rolled edge, positioned at the highest portion of each con
vantage because after the purchase and away from the
vex section there is a pair of inwardly protruding studs,
retail store, ready access to the spray valve unit is rather 50 the said studs functioning to engage and snap under the
desirable.
raw edge of said downwardly-presented peripheral side
The dispensing container 1 and substantially all of its
wall of the valve cup, and the terminal end of the cylin
parts are made of metal to withstand pressure, con
drical skirt element frictionally engaging the downward
ventionally. The cover of my invention is made of metal.
ly presented side wall of the valve cup of the container
The protective cover of the present invention has many 55 thereby ?rmly ‘holding the said protective cover to the
advantages. There exists a de?nite need for a protective
said container, there being su?icient space between each
cap or cover ?tting pressurized dispensing containers that
convex section of the rolled edge and the neck of the con
can not be removed easily by a person’s two hands alone
on the part of shoppers, whether customers or the curious
tainer for the insertion of a device to pry the cover from
with pressurized dispensing containers, and thereupon
the container.
2. The protective cover as set out in claim 1, wherein
the pairs of inwardly protruding studs are of the same
piece of metal as the metallic protective cover of the
container.
3. The protective cover as set out in claim 1, wherein
65 the protective cover has a substantially ?at top.
spraying paint or placing said covers upon the wrong con
tainers, or even losing the caps. In the case of paints,
duced neck portion terminating in a discharge valve unit,
this difficulty is magni?ed because the color thereof itself
is usually designated by the color on the exterior of the
the valve cup of which has an annular rim terminating
in a downwardly-presented peripheral side wall having a
top of the cover. When the prospective customer or
curious minded individual re-places such covers on the
circular raw edge, a metallic protective cover for remov
wrong containers, i.e. containers holding paint of another
a circular top, a cylindrical skirt integral therewith and
color, it can be seen how serious the situation can become
in the trade. There are very many colors and shades
extending substantially vertically downwardly from the
observers. There is something enticing to most individ 60
uals about spraying from such containers.
The store
owners or managers of pain stores have encountered
trouble due to people (shoppers) coming into their stores,
:removing caps or covers from the particular assembly
4. For use with a cylindrical container having a re
able securement to said cylindrical container, comprising
outer edge of said top, said skint element terminating in
oifered in paints in aerosol containers in the retail trade. 75 a circular outwardly rolled edge, there'being three sub
3,088,635
5
5. The protective cover set out in claim 4, wherein the
stantially equally circumferentially spaced, convex sec
tions in said rolled edge, positioned at the highest portion
pairs of inwardly protruding studs are of the same piece
of each convex section there is a pair of inwardly pro
of metal as the metallic cover of the container.
truding studs, the said studs functioning to engage and
snap under the raw edge of the said downwardly-presented 5
peripheral side wall of the valve cup, and the terminal
end of the cylindrical skirt element frictionally engaging
the downwardly-presented side wall of the valve cup of
the container thereby c?rmly holding the said protective
cover to the ‘said container, there being sufficient space 10
between each of the aforesaid convex sections of the
rolled edge and the neck of the container for the insertion
of a device to pry the cover from the container.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,109,805
Stewart ______________ __ Mar. 1, 1938
2,326,809
2,403,511
2,765,960
White _______________ __ Aug. 17, 1943
Enkur ________________ __ July 9, 1946
So?er et al. ___________ __ Oct. 9, ‘1956
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