U.S. patent number 3,742,994 [Application Number 05/191,213] was granted by the patent office on 1973-07-03 for inflatable container.
This patent grant is currently assigned to Colgate-Palmolive Company. Invention is credited to Philip Pensak.
United States Patent |
3,742,994 |
Pensak |
July 3, 1973 |
INFLATABLE CONTAINER
Abstract
An inflatable double walled container having inner and outer
walls of plastic film and provided with an imperforate bottom wall.
The container may be inflated to form a rigid self-supporting waste
basket or garbage can and when filled may be deflated and have the
open end sealed and thereafter disposed of in any convenient
manner.
Inventors: |
Pensak; Philip (New Brunswick,
NJ) |
Assignee: |
Colgate-Palmolive Company (New
York, NY)
|
Family
ID: |
22704570 |
Appl.
No.: |
05/191,213 |
Filed: |
October 21, 1971 |
Current U.S.
Class: |
383/3; 383/71;
383/121 |
Current CPC
Class: |
B65F
1/02 (20130101); B65D 31/04 (20130101); B65F
2220/116 (20130101) |
Current International
Class: |
B65D
30/08 (20060101); B65F 1/02 (20060101); B65d
031/04 () |
Field of
Search: |
;206/DIG.30
;150/.5,1,48,49,50 ;190/44 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Norton; Donald F.
Claims
I claim:
1. An inflatable double wall cylindrical container comprising an
inner wall and an outer wall connected at their top and bottom
edges, said outer wall being otherwise spaced from said inner wall
and defining a chamber therebetween, a bottom wall, said inner wall
and said outer wall being continuously secured to said bottom wall
at the periphery thereof, said outer wall being generally
perpendicularly disposed to said bottom wall, and means for
introducing air under pressure to said chamber to rigidify said
container.
2. A container according to claim 1, wherein said inner wall and
said outer wall are of a thin plastic film.
3. A container according to claim 1, wherein said means includes a
bore in said outer wall, and a tube attached to said outer wall
surrounding said bore.
4. A container according to claim 3, including a check valve for
preventing loss of air from said chamber through said tube.
5. A container according to claim 1, wherein said bottom wall is
imperforate and is flexible.
6. A container according to claim 1, wherein said inner wall and
said outer wall are secured to each other at the top and bottom
thereof.
7. An inflatable double wall container conprising an inner wall and
an outer wall connected at their top edges, said outer wall being
otherwise spaced from said inner wall and defining a chamber
therebetween, a bottom wall, said inner wall and said outer wall
being secured to said bottom wall at the periphery thereof, said
bottom wall having a peripheral flange welded to said inner wall
and said outer wall, said outer wall being disposed inwardly of
said flange, and means for introducing air under pressure to said
chamber to rigidify said container.
Description
This invention relates to an inflatable double walled container and
has for its primary object to provide a double walled plastic bag
when inflated which will be self-supporting in an open standing
position so that it can be used as a disposable waste basket or
garbage can.
Various types of sheet plastic materials have been used as liners
for garbage cans or waste baskets. However, these devices are not
self-supporting, and heavy and relatively ugly garbage cans or
waste baskets must be used for supporting the liners when receiving
trash, garbage and the like refuse.
The present invention overcomes the disadvantages of the prior art
disposable refuse containers by providing for a double walled
construction that is inflatable so that the container becomes
self-supporting and relatively rigid yet which, once filled, can be
easily collapsed, have its mouth tied off, and used as a disposable
refuse receptacle thereby eliminating the need for waste baskets or
garbage cans.
Other objects of this invention reside in the provision of a
self-supporting substantially leak-proof container for refuse that
may be easily inflated, yet which has a construction which is
relatively inexpensive to manufacture in mass production
quantities, thereby permitting wide use and distribution.
These, together with the various ancillary objects and features of
the present invention, which will become apparent as the following
description proceeds, are attained by this inflatable container,
preferred embodiments of which are illustrated in the accompanying
drawing, by way of example only, wherein:
FIG. 1 is a side elevational view of a container constructed in
accordance with the concepts of this invention, with parts broken
away showing other parts in section;
FIG. 2 is an enlarged sectional detail view illustrating the means
used for inflating the container;
FIG. 3 is a transverse sectional view taken along the plane of line
3--3 in FIG. 2;
FIG. 4 is a sectional detail view illustrating an alternate form of
valve which may be used in conjunction with the invention;
FIG. 5 is a sectional detail view in an enlarged scale showing
details of construction; and,
FIG. 6 is an elevational view showing the container after deflation
when filled with refuse for disposal thereof.
With continuing reference to the accompanying drawing, wherein like
reference numerals designate similar parts throughout the various
views, reference numeral 10 generally designates a container
constructed in accordance with the concepts of the present
invention. The container 10 includes an inner wall 12 and an outer
wall 14. The container 10 may be of any suitable shape such as
cylindrical, oval, or box-like, but, as shown in FIG. 1, the inner
wall 12 and the outer wall 14 are of a cylindrical configuration.
The inner wall 12 and the outer wall 14 are secured together at the
top 16 thereof as by heat welding or ultrasonic welding to form a
top edge 18. A bottom wall 20 is provided which is of an
imperforate configuration and has an integral flange 22 which is
heat welded or otherwise united to the inner wall 12 and the outer
wall 14 at the bottom 24 thereof forming a very strong bottom
peripheral edge for the container.
The outer wall 14 has a bore 26 therein and a tube 28 surrounds the
bore 26 in an air tight manner. The tube is provided with an inlet
opening 30 therethrough and may be a tapered mouthpiece 32 for
permitting air 34 to be blown into the space or chamber 36 between
the inner wall 12 and the outer wall 14. A ball check valve
including a spherical member 40, bypass slots 41, a spring 42, and
a washer 44 may be provided for preventing loss of any of the air
from the chamber 36.
As shown in FIG. 3, in lieu of the ball-type check valve assembly,
a spring-type check valve assembly may be provided including
springs 52, 54 which, when air is introduced into the mouthpiece in
the direction of arrows 34, will move to the position shown in
dotted lines but will spring to the position as shown in solid
lines in FIG. 4 to prevent loss of air from the chamber 36.
One of the novel features of the invention is that the more air
that is introduced into the space 36, the more rigid the container
10 becomes. The use of the inner wall 12 and the outer wall 14 also
prevents seepage of liquid refuse after deflation should a slight
tear happen to either the inner wall 12 or the outer wall 14.
After the container 10 has been suitably filled with refuse, it may
be collapsed by pulling off the tube 28. In lieu of the check valve
assembly, it is within the concepts of the present invention to
employ a cap, cork, or pinching device.
The inner wall 12 and outer wall 14 may be made of a thin or thick
film material depending on the size of the ultimate inflated
container. Any light flexible non-permeable material can be
utilized and such material may be opaque, transluscent, or
transparent with any suitable design, printing, indicia, or the
like thereon. If it is desired, the inner wall 12 and the outer
wall 14 may be provided with reinforcement and the bottom wall may
be provided with ribs such as shown at 58 for providing added
strength.
A latitude of modification, substitution and change is intended in
the foregoing disclosure, and in some instances, some features of
the invention will be employed without a corresponding use of other
features.
* * * * *