U.S. patent number 3,796,063 [Application Number 05/241,732] was granted by the patent office on 1974-03-12 for ice cube making device.
Invention is credited to Reinhart J. Rabska, William L. Wulke.
United States Patent |
3,796,063 |
Wulke , et al. |
March 12, 1974 |
ICE CUBE MAKING DEVICE
Abstract
A portable, lightweight, power-driven ice cube making device
that is particularly adapted for being operatively associated with
an insulated chest for cooling the interior thereof, as well as
being mounted within the confines of a wall or closet to supply ice
cubes to a movable container to which a user has access.
Inventors: |
Wulke; William L. (Santa Maria,
CA), Rabska; Reinhart J. (Santa Maria, CA) |
Family
ID: |
22911943 |
Appl.
No.: |
05/241,732 |
Filed: |
April 6, 1972 |
Current U.S.
Class: |
62/340; 62/457.1;
62/457.9 |
Current CPC
Class: |
F25C
1/04 (20130101); F25C 2305/022 (20130101); F25C
2400/10 (20130101) |
Current International
Class: |
F25C
1/04 (20060101); F25c 001/04 () |
Field of
Search: |
;62/457,340,448 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wayner; William E.
Attorney, Agent or Firm: Babcock; William C.
Claims
We claim:
1. In combination with a generally rectangular chest having an open
top and a cover that removably engages the latter, said chest and
cover formed from a heat insulating material, a portable device for
forming ice cubes in the interior of said chest to refrigerate the
latter, said device including:
a. a rigid housing that may be disposed adjacent said chest;
b. a downturned L-shaped bracket supported from said housing and
including a substantially horizontal portion disposed between said
chest and cover and a substantially vertical portion situated
inside said chest;
c. a U-shaped support of less width than that of the interior of
said chest secured to said vertical portion of said bracket and
positioned within the confines of said chest;
d. a receptacle mounted on said support for receiving ice
cubes;
e. ice cube making means so mounted on said support that includes
after being made drop by gravity into said receptacle, said ice
cube making means including an evaporator coil;
f. a reservior for water supported from said housing;
g. a compressor, power means for driving said compressor and a
condenser situated in said housing;
h. first conduit means extending from said reservior across said
horizontal portion of said bracket to said ice cube making means to
supply the latter with water;
i. second conduit means connecting said compressor, condenser and
evaporator coil of said ice cube making means; with a portion of
said second conduit means extending across said horizontal portion
of said bracket; and
j. a quantity of refrigerant that is intermittently compressed and
expanded in said compressor, condenser and evaporator coil to form
said water delivered to said ice cube making means into ice cubes
to cool the interior of said chest after said ice cubes drop into
said receptacle.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention:
Device for making ice cubes.
2. Description of the Prior Art:
Ice cube making devices are normally included as an integral part
of a conventional domestic refrigerator. However, such
refrigerators are normally heavy and bulky, are not portable, and
normally remain in a fixed position.
In camping, picnics and the like, a need has arisen for a
lightweight portable ice cube maker that is particularly adapted
for use in refrigerating the interiors of insulated, perishable
food-containing chests, as well as a portable ice cube maker that
may be removably positioned on a counter or table, or partially
concealed in a portion of a wall or closet.
The primary purpose in devising the present invention is to supply
a portable, power-driven ice cube maker that may be used to satisfy
the above-described need.
SUMMARY OF THE INVENTION
A portable ice cube maker that includes a movable mold in which
water is periodically dishcarged to be frozen into cubes as a
refrigerant is allowed to expand in a tubular evaporator from an
expansion valve. The refrigerant after expanding is returned to the
suction side of a power driven compressor where it is again
compressed in a condenser and then allowed to expand through the
expansion valve.
The power driven compressor, condenser, and expansion valve are
preferably enclosed within a housing that supports a water supply
reservoir. The ice cube making mold and expansion coils are so
spaced relative to the housing enclosed elements and water
reservoir that the ice cube making mold and expansion coil may be
removably disposed within the confines of an insulated perishable
food-containing chest, but with the balance of the ice cube maker
assembly remaining on the exterior thereof.
The ice cube making assembly may also be used when removably placed
on a table or counter, or permanently included as an integral part
of an insulated perishable food-containing chest. Also, the ice
cube making assembly may be incorporated in a wall or closet if
desired, which is particularly convenient in motel or hotel
rooms.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the ice cube making assembly
removably and operatively associated with an insulated perishable
food-containing chest;
FIG. 2 is a fragmentary longitudinal cross-sectional view of the
assembly and chest shown in FIG. 1;
FIG. 3 is an end elevational view of the device shown in FIG.
1;
FIG. 4 is a fragmentary perspective view of a portion of the ice
cube making assembly shown in FIG. 1;
FIG. 5 is a perspective view of a first alternate form of the
invention that is portable and may be removably disposed on the top
of a counter, table or the like;
FIG. 6 is a perspective view of a second alternate form of the
invention in which the ice cube making assembly is included as an
integral part of an insulated chest;
FIG. 7 is an end elevational view of the second alternate form of
the device;
FIG. 8 is a fragmentary, longitudinal cross-sectional view of the
second alternate form of the invention;
FIG. 9 is a perspective view of a third alternate form of the
invention; and
FIG. 10 is a combined side elevational and vertical cross-sectional
view of the third alternate form of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The first form of the invention A, as illustrated in FIGS. 1 to 4,
includes a portable ice cube making assembly B that may be operated
either by electric power or gas. The assembly B is particularly
adapted for use in cooling the interior of an insulated chest C
having an open top 10 that is normally closed by a cover D. The
chest is defined by a bottom 12 that has a pair of end walls 14 and
side walls 16 projecting upwardly therefrom, which end walls and
side walls cooperate to define the open top 10.
Assembly B includes a lightweight housing 18 that is illustrated in
the drawings as being of rectangular shape. The housing 18 is
defined by sheet material and includes a bottom 20, a pair of side
walls 22 and a pair of end walls 24. The side walls 22 and end
walls 24 support a rectangular water reservoir 26 on the upper edge
portions thereof. Reservoir 26 is provided with a water inlet
opening 28 that may be engaged by water-containing bottle 30.
Situated within the confines of the housing 18, below reservoir 26,
is an electrically operated compressor 32 that is adapted to
compress a gaseous refrigerant to the extent that when the gaseous
refrigerant flows into a condenser 34 it will be liquified. Cooling
of the condenser is by a motor driven fan E that is actuated from
the same source of electricity energy used in energizing the
compressor 32.
The liquid refrigerant in the condenser flows therefrom through a
conduit 36 to an expansion valve 38. The refrigerant, after flowing
through the expansion valve 38, expands to the gaseous state and
cools evaporator coils 40 that form a part of a conventional ice
cube making device 42. The refrigerant, after expanding in the
evaporator coils 40, returns to the suction sid of the compressor
32 through a conduit 44. The ice cube making mechanism 42 is
conventional and may be of the structure shown and described in the
M. F. Connors U.S. Pat. No. 3,226,944, issued Jan. 4, 1966.
The housing 18 has a downturned L-shaped web 46 projecting
outwardly therefrom, as may best be seen in FIG. 2. The web 46 has
a U-shaped support 48 secured in a depending position therefrom,
which support has the ice cube making mechanism mounted on the
upper interior confines thereof. Support 48 is of narrower width
than the interior of the chest C, and serves to support an ice
cube-receiving container 50.
The web 46, in addition to supporting the support 48, also serves
as a mounting for the conduit 36 that supplies refrigerant to the
evaporator coil 40, and the conduit 44 that returns the refrigerant
from the coil 40 to compressor 32. Web 46 also serves as a support
for a conduit 54 that leads from reservoir 26 to the ice cube
making mechanism 42. Water flows by gravity through conduit 54 to
ice cube making mechanism 42. The web 46 and conduits supported
thereon are sufficiently thin that when they extend across the top
of a chest end wall 24, as shown in FIG. 2, the cover D can still
be placed in a position to seal the open top 10 of the chest C. If
necessary, the cover D may be recessed to accomodate the web 46 and
permit the above-mentioned positioning of the cover D on the chest
C. Although the refrigeration of the coils 40 has been described as
achieved by operation of the electrically actuated compressor, the
assembly B may also have the evaporator coils 40 cooled by the use
of gas supplied from a container 56 that is preferably situated in
housing 18. Control of gas from container 56 is by use of a
manually operated valve 58. The means for providing alternate
cooling of the evaporator coils 40 by the use of either gas or
electric power is not shown in detail, as such is conventional, and
now is included in refrigeration units now marketed for use in
trailers and other mobile units.
From the above description it will be apparent that the assembly is
portable, compact, light in weight and is removably associatable
with the chest C to cool the interior thereof. The chest C may be
formed from any desired insulating material, but chests formed from
foamed plastic material have been found to be quite satisfactory.
Electricity to energize the compressor 32 may be from any desired
source, and the electrical connections that extend to this source
are not shown in the drawings.
A first alternate form of the invention is shown in FIG. 5 that is
similar in structure to the form above described, and differs
therefrom in that the housing 18' and chest C' are joined together
as an integral unit to permit the same to be removably placed on a
desires horizontal surface (not shown) such as the top of a counter
or table. The chest C' in the first alternate form has hinges 57
that permit cover D' to be pivoted to an upwardly extending
position whereby ice cubes 52 may be removed from the chest.
In FIGS. 6 to 8 a second alternate form of the invention is shown
in which a chest C" is provided that has a recess 59 formed in a
lower end portion thereof by a vertical wall 60 and horizontal wall
61 that extend between bottom 20" and end wall 14". A U-shaped,
rigid assembly 62 is secured to wall 60 by bolts 63 or other
fastening means and supports the refrigerating equipment previously
described within the interior thereof. The components of the
refrigerating equipment are designated on the drawings by the
numerals previously used for this purpose, but with double primes
being added thereto. In the second alternate form of the invention
the ice cube making mechanism 42" is situated in the portion of
chest C" above horizontal wall 61, and the container 50" resting on
the upper surface of wall 61. The assembly 62 includes a
spring-loaded, pivotally supported door 64 to permit access to the
components of the refrigeration equipment. A vertical grill 66 is
secured to the top of wall 60 within the confines of chest C" to
permit air that has been refrigerated by contact with the ice cubes
52" to cool the entire interior of the chest C".
A third alternate form of the invention is shown in FIGS. 9 and 10
in which the refrigerating components previously described are
concealed within the confines of a wall 68, and the ice cube making
mechanism 42" being disposed exteriorly of the wall 68 within the
confines of a housing 70 that is supported from the wall. Housing
70 includes a pivotally supported door that may be swung outwardly
to permit ice cubes to be removed from container 50"'.
* * * * *