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Патент USA US2117075

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May 10, 1938.
Filed Dec. 21, 1933
Patented May 10, 1938
John Belmont, Brooklyn, N. Y., assignor to Le
beckbo, Incorporated, New York, N. Y., a cor
poration of New York
Application December 21. 1933, Serial No. 703,369
2 Claims. (Cl. 220-44)
The present invention relates to closures for parent from the following drawing, illustrating
containers for foods or liquids and particularly
to containers in which milk, ice cream, carbon
ated beverages, etc. are sold.
Containers of this type are usually made of
paper with walls of substantial thickness and
rigidity and are supplied with a cap or closure
which may be telescopically engaged over the
open end to effect a spill-proof and therefore an
air-tight closure.
Considerable di?iculty is encountered in apply
ing these caps to the container due to the trap
ping of air which can only be dispelled between
the walls of the container and the skirt of the
cap. Due to the nicety of ?t between these parts
the rim of the container often collapses under
this pressure of air and in this wise defeating the
purpose of the closure.
Similarly, the cap may not easily be removed
since atmospheric pressure upon the outside of
20 the cap, often as high as 135 lbs. and the sub
stantial vacuum between the inside of the cap
and the container contents calls for considerable
strength to remove the cap.
Quite often the contents of the container are
spilt during the process of removal of the cap due
to the sudden breaking of the vacuum in, the
container while main strength is being exerted
by the person so employed.
The present invention seeks to correct the above
objectional faults by providing means whereby
the interior of the container may be vented to
atmosphere to break the suction therein without,
in any manner, injuring or impairing the con
35 tainer.
More particularly the invention contemplates a
container of this type having a. cap provided with
means whereby the interior of the container may
be vented.
Another object of the invention resides in the
provision of a container having an apertured cap
and provided with a secondary member in juxta
position with the top thereof, which member may
be pressed away from the top of the cap to- per
45 mit air to escape from or enter into the container
during the process of application to or removal
from the container.
A further object is to provide resilient means to
maintain the secondary member in juxtaposition
50 with the bottom of the cap top and means where
by the resilient means may be compressed to per
mit air to enter into or escape from the interior
of the container.
These and other objects of the invention and
55 the means for their attainment will be more ap
one embodiment by which the invention may be
realized, and in which:
Fig. 1 is a top plan view, partly broken away,
of a cap or closure constructed in accordance 5
with the invention.
Fig. 2 is a side elevational view thereof, parts
being in section.
Figs. 3 and 4 are respectively similar views il
lustrating an alternate form of construction.
Figs. 5 and 6 show another embodiment of the
Fig. 7 is a side elevation, partly in section of
another modi?cation.
Containers of this type, while now usually made
of a paper may, of course, be moulded of ?brous
material or the like or may be made of metal.
One form of such container is shown at II] as a
hollow cylindrical member closed at its bottom I l
and having a top opening I2.
The cap or closure [3 is provided with the usual 20
top l4 and a skirt portion I5 adapted to tele
scopically engage over the mouth of the con
In the present invention it is preferred to pro~ 25
vide the top of the cap with a substantially cen
tral opening [6. Below the cap top and in juxta
position therewith there is preferably secured a
secondary member I‘! either glued at its outer
extremities to the inside of the cap or otherwise
securely fastened thereto.
The major portion of the secondary member
may be of a lesser diameter, than the cap as
shown at l8 Fig. 1, or this member may be pro
vided with one or more openings [9, Fig. 5, where
by when depressed by the ?nger or other instru- a
ment applied at the hole l6, air may pass into or
be permitted to escape from the interior of the
container to facilitate easy removal or application
of the cap.
The form shown in Figs. 3 and 4 is substantially
similar except that the secondary member is not
fastened to the cap but is held juxtaposed to the
bottom of the cap by means such as the coil
spring 20 and may be depressed by application of 45
pressure to the knob 2| so atmosphere may be
communicated to the interior of the container
through the openings 22 in the cap.
The form shown in Fig.7 differs from the
forms shown in Figs. 1 and 5 only in that a por
tion of the secondary member is embossed to
protrude at 23 through the opening I6 to afford
ready means whereby the secondary member
may be depressed away from contacting the cap,
While certain preferred embodiments of this
device have been shown and described, it will be
understood that changes in the form, arrange
ments, proportions, sizes and details thereof may
be made without departing from the scope of the
invention as de?ned in the appended claims.
Having thus described my invention, what I
claim as new and desire to secure by Letters Pat
ent, is:
sure applied to said embossment will depress said
secondary member to vent the interior of the con
tainer to atmosphere.
2. As a new article of manufacture, an all
pasteboard container having a removable top
portion telescopically engaged in said container,
and means carried by said top portion for venting
the interior of said container prior to the removal
of said top portion, said venting means compris
ing a pasteboard wall having a central aperture 10
1. A removable closure cap for containers com
prising in combination a skirt, a top having a
and ‘a second pasteboard wall contiguous with the
substantially central aperture and a secondary
?rst wall and adapted to be moved from said con
member in permanently yieldable juxtaposition
tiguous position by pushing against that portion
with the bottom of said top and having openings
in permanent disalignment with" the mentioned
aperture and provided with an embossment pro
of said member exposed by the mentioned aper
jecting through the said aperture whereby pres
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