U.S. patent number 3,844,525 [Application Number 05/298,041] was granted by the patent office on 1974-10-29 for ice cube tray.
This patent grant is currently assigned to APL Corporation. Invention is credited to George Parmett.
United States Patent |
3,844,525 |
Parmett |
October 29, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
ICE CUBE TRAY
Abstract
A one-piece freezing tray is provided having at least one
molding compartment for forming ice cubes. The tray is comprised of
a flexible material and the compartment has a horizontally disposed
mouth at the uppermost end of the compartment. The compartment has
integrally formed in the lowermost wall thereof a projection
depending from the outer surface thereof. An ice cube is removed
from the compartment by placing the projection against a hard
surface and pressing the mouth towards the projection to deform the
lowermost surface of the compartment which urges the ice cube out
of the compartment.
Inventors: |
Parmett; George (Seaford,
NY) |
Assignee: |
APL Corporation (Great Neck,
NY)
|
Family
ID: |
23148764 |
Appl.
No.: |
05/298,041 |
Filed: |
October 16, 1972 |
Current U.S.
Class: |
249/127;
220/23.8; 229/406 |
Current CPC
Class: |
F25C
1/243 (20130101) |
Current International
Class: |
F25C
1/22 (20060101); F25C 1/24 (20060101); F25c
001/24 () |
Field of
Search: |
;249/127,69,76,136,137,122,123,124,125,70,128 ;425/DIG.12
;220/23.8,70,DIG.14 ;229/2.5 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Overholser; J. Spencer
Assistant Examiner: Brown; John S.
Attorney, Agent or Firm: Caesar, Rivise, Bernstein &
Cohen
Claims
What is claimed as the invention is:
1. A one-piece freezing tray having at least one molding
compartment for forming ice cubes, said tray comprised of a
flexible material and said compartment having a horizontally
disposed mouth at the uppermost end of said compartment, said
compartment having a flexible lowermost wall which is substantially
planar, said wall being of narrow thickness and having integrally
formed in the center thereof a projection depending from the outer
surface thereof, said projection being integral with a small area
of said lowermost wall and being solid throughout its
cross-section, an ice cube formed therein being removable from said
compartment by placing said projection against a hard surface and
pressing the mouth about said compartment towards said projection
to deform said lowermost wall of said compartment and urge said ice
cube out of said compartment.
2. The ice tray of claim 1 wherein said tray includes a plurality
of compartments, each of said compartments having an integral
depending projection.
3. The one-piece freezing tray of claim 1 wherein said projection
is circular in cross-section parallel to said lowermost wall and
semicircular in cross-section transverse to said lowermost
wall.
4. The one-piece freezing tray of claim 2 wherein each compartment
has a horizontally disposed mouth at the uppermost end thereof,
said mouth being formed by a plurality of longitudinally and
transversly extending strips which integrally connect the
compartments in tandem, said strips forming the mouth of each of
the compartments.
Description
This invention relates generally to ice cube trays and more
particularly to an ice cube tray having integral means formed in
each compartment to enable easy removal of ice cubes.
There are many times when only a single or a few ice cubes are
required. However, normally in order to take out any ice cubes all
of the ice cubes must be taken out of the ice tray. One of the more
popular types of ice trays available is the type made of low
density polyethylene plastic which is flexible and by flexing the
tray the ice cubes can be removed. However, removal of ice cubes
from this type of tray is difficult and it is normally difficult to
only take out one or two ice cubes at a time without causing the
remaining ice cubes to be pushed out simultaneously. Where means
are provided to remove ice cubes either individually or more easily
means externally of the ice tray are provided. Various devices
exist for the removal of ice cubes from an ice cube tray but are
more expensive than the flexible type of ice cube tray which is
formed of a plurality of molding compartments which are connected
together at the periphery of their mouth in a tandom
arrangement.
It is therefore an object of this invention to overcome the
aforementioned disadvantages of the prior art.
Still another object of the invention is to provide a new and
improved ice cube tray in which the ice cubes molded can be removed
easily.
Another object of the invention is to provide a new and improved
ice cube tray which has at least one compartment having a
projection integrally formed therein to enable an ice cube formed
in the compartment to be easily emitted.
These and other objects of the invention are achieved by providing
a one-piece freezing tray having at least one molding compartment
for forming ice cubes. The tray is comprised of a flexible material
and the compartment has a horizontally disposed mouth at the
uppermost end of the compartment. The compartment has integrally
formed in the lowermost wall thereof a projection depending from
the outer surface thereof. An ice cube is removable from the
compartment by placing the projection against a hard surface and
pressing the mouth towards the projection. This deforms the
compartments lowermost surfae and urges the ice cube out of the
compartment.
Other objects and many of the attendant advantages of this
invention will be readily appreciated as the same becomes better
understood by reference to the following detailed description when
considered in connection with the accompanying drawings
wherein:
FIG. 1 is a perspective view of an ice cube tray embodying the
invention;
FIG. 2 is a sectional view taken along the line 2--2 in FIG. 1;
FIG. 3 is a fragmentary sectional view taken along the line 2--2 in
FIG. 1 after the ice cube tray has been placed against a hard
surface and pressed down;
FIG. 4 is an alternate embodiment of an ice cube tray embodying the
invention having only a single compartment; and
FIG. 5 is a sectional view taken along the line 5--5 of the
alternate ice cube tray after an ice cube has been formed therein
and a removal force has been applied to the mouth of the
compartment.
Referring now in greater detail to the various figures of the
drawings wherein similar reference characters refer to similar
parts, an ice cube tray embodying the invention is shown generally
at 20 in FIG. 1. Ice cube tray 20 is preferably flexible and
comprises a thermoplastic resin such as a low density polyethylene
and includes a plurality of molding compartments 22 which are held
together by a frame 24. The tray preferably includes two parallel
rows of compartments. Frame 24 basically comprises a pair of
elongated strips 26 and 28 which are connected integrally to
transversely extending end strips 30 and 32. As best seen in FIG.
1, tray 20 also includes a peripheral 32. As best seen in FIG. 1,
tray 20 also includes a peripheral skirt 34 which depends from the
outermost end of strips 28 and 30 and 26. The skirt 34 in addition
to providing an ornamental effect also provides rigidity to the
longitudinal extent of the tray as well as a handle beneath strip
30 at one end of the ice cube tray. The handle is best seen in FIG.
2 at the rightmost end of the tray and facilitates removal of the
tray from a freezer compartment.
As best seen in FIG. 1, the strips 24 and 28 are also connected
together by a series of inner strips 36, 38, 40, 42 and 44. The
strips 30 and 32 are also connected together by a longitudinally
extending strip 46 which extends through the center of each of the
strips 36, 38, 40, 42 and 44 and is integral with strips 30 and 32
at the center thereof. Strips 36, 38, 40 42 and 44 in combination
with the peripheral strips 26, 28, 30 and 32 form the mouth of each
of the compartments 22. Thus as seen in FIG. 2, the compartments
are integrally connected at their mouths in tandem along the length
of the tray.
Each of the compartments 22 includes a depending integral
projection 48 which depends centrally from the lowermost horizontal
wall 50 of each of the compartments. The projections 50 are
preferably circular in horizontal cross-section and semicircular in
vertical cross-section.
It should be noted that the entire tray is made of one piece and
does not have any parts cooperating with the tray for removal of
the ice cubes. In operation, the ice cube tray is filled in a
conventional manner with water and placed in the freezing
compartment of a refrigerator. After the ice cubes are formed in
each of the compartments 22, the ice cubes formed in the tray are
substantially as shown in FIG. 2. By applying pressure along the
arrows 52, 54 and 56 the ice cubes can be removed from the ice cube
tray. That is, if pressure is applied at arrow 54 arrow 52 which is
about the mouth of the compartments 22 with the projection 48
against a hard surface 58, the lowermost walls 50 are deformed
upwardly thereby causing the ice cube to be emitted from the
compartment 22.
In order to remove only a single ice cube, it is only necessary to
apply pressure along strips on opposing sides of the compartment in
which it is desired to remove the cube. For example, if the ice
cube in the compartment 22 shown on the leftmost side of FIG. 2
were desired to be removed, it would be necessary only to place
pressure down on strip 44 and strip 32 which thereby causes removal
of the ice cube 60 in the compartment associated therewith.
In accordance with this invention, an alternate embodiment is shown
in FIGS. 4 and 5 having only a single molding compartment. The ice
tray 100 is preferably rectangular and includes a pair of
horizontally disposed flanges 102 which extend outwardly of the
mouth of the tray at opposed corners. The tray 100 thus comprises
only a single compartment having an integrally formed projection
104 which is provided in the lowermost wall 106. The projection 104
is provided centrally of the lowermost wall 106 and enables an ice
cube to be removed when pressure is applied at the mouth as
indicated by arrows 108 and 110. When pressure is applied along the
arrows 108 and 110 in FIG. 5 the projection 104 causes the
deformation of lower wall 106 which is shown in phantom at 106'.
The ice cube 112 is also shown in phantom at 112' after it has been
moved upwardly by deformation of the lowermost wall 106.
Without further elaboration, the foregoing will so fully illustrate
my invention, that others may, by applying current or future
knowledge, readily adapt the same for use under various conditions
of service.
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