US3800554A - Food storage and cooling apparatus - Google Patents

Food storage and cooling apparatus Download PDF

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Publication number
US3800554A
US3800554A US00253414A US3800554DA US3800554A US 3800554 A US3800554 A US 3800554A US 00253414 A US00253414 A US 00253414A US 3800554D A US3800554D A US 3800554DA US 3800554 A US3800554 A US 3800554A
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Prior art keywords
cavity
housing
chamber
door
icebox
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Expired - Lifetime
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US00253414A
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English (en)
Inventor
K Knapp
D Reedy
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KARDEL PROD CORP
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KARDEL PROD CORP
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/12—Devices using other cold materials; Devices using cold-storage bodies using solidified gases, e.g. carbon-dioxide snow
    • F25D3/122—Stationary cabinets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2202/00—Indexing codes relating to type or characteristics of transported articles
    • B62B2202/67—Service trolleys, e.g. in aircraft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/085—Breaking strips

Definitions

  • This invention provides an improved food storage unit for keeping frozen and refrigerated food.
  • the assembly includes a housing defining a cavity open from the housing along one of the sides of the cavity.
  • Door means are releasably engageable with the housing across the one side of the cavity for closing the cavity opening.
  • Gasket means cooperate between the door means and the housing for providing an essentially airtight seal between the door means and the housing in the closed position of the door means.
  • Thermal insulation material is carried by the housing and by the door means for essentially fully enclosing the cavity in the closed position of the door means.
  • Partition means are disposed in the housing for subdividing the cavity into first and second chambers.
  • a receptacle is associated with the first chamber for receiving a predetermined quantity of solidified carbon dioxide.
  • Thermal insula tion material is provided in association with the partition so that the receptacle is thermally associated with the first chamber more intimately than with the second chamber.
  • the predetermined quantity of solidified carbon dioxide, in conjunction with the thermal insulation material, is sufficient to maintain the first chamber at a temperature below 0 C. and the second chamber at a temperature above, but approaching 0 C. for a predetermined time under specified ambient temperature conditions.
  • the perishable food storage facilities in such vehicles are either nonexistent or are of a type which do not require the use of electrical power derived from the vehicle ignition system. It is known to equip recreational vehicles with refrigerators or refrigerator-freezer units which operate on a thermodynamic cycle powered by an auxiliary electric storage battery or by natural gas, for example; such units are not preferred because of their expense, lack of reliability, and the safety hazards associated with them, but their existence in the marketplace does serve to emphasize the utility of the present invention. In general, therefore, to the extent that recreational vehicles of the types mentioned do include facilities for keeping perishable foods, the typical facility often relies upon the use of ice to maintain an insulated food storage chamber at a temperature approaching but above C. Such iceboxes, however, are not capable of freezing unfrozen foods products or of maintaining frozen food products in a frozen state for any significant period.
  • iceboxes which have been designed specifically for use in camper units, camper vans, travel trailers and the like.
  • the commercially available iceboxes are of generally standardized dimensions, and usually are rated at a capacity of four cubic feet; such iceboxes are also known as 75 pound iceboxes.
  • such an assembly should not be dependent on power derived either from the vehicle engine or its associated equipment, nor should the assembly rely on natural gas as a power source.
  • the desired refrigeration and freezing capability should be provided by a unit which is compatible with, insertable into and takes advantage of the structure of existing recreational vehicle iceboxes available for use with unfrozen perishable foods. It'h'as been ascertained that a sizable commercial market exists for products filling these needs.
  • This invention provides an improved refrigerating and freezing food storage assembly which is simple, economic and efficient.
  • One form of the invention is an insert unit which may be disposed in the ice storage area of commercially available recreational vehicle iceboxes for the purposes of converting the icebox to a refrigerator-freezer.
  • the use of this insert unit increases the effective food storage volume provided in the icebox.
  • the insert unit provides the desired refrigerating and freezing capabilities by the use of solidified carbon dioxide, commonly known as dry ice, which is available at reasonable cost. By its use of dry ice as the cooling medium, the insert unit avoids the problems attendant to the use of electrical or natural gas power systems. Also, because the unit relies upon the insulative characteristics of the conventional recreational vehicle icebox, it is compact, structurally simple, and reliable.
  • this invention provides an improved refrigerating and freezing food storage assembly which comprises a housing defining a cavity therein.
  • the cavity has an opening from the housing along the extent of one side of the cavity.
  • Door means are releasably engageable with the housing across the one side of the cavity for closing the cavity opening.
  • Gasket means cooperate between the door means and the housing for providing an essentially airtight seal between the door means and the housing in the closed position of the door means.
  • Thermal insulation material is carried by the housing and the door means for essentially fully enclosing the cavity in the closed position of the door means relative to the housing.
  • Partition means are disposed in the housing for subdividing the cavity into first and second chambers.
  • Receptacle means are provided in association with the first chamber for receiving a predetermined quantity of solidified carbon dioxide.
  • Thermal insulation material is also operatively associated with the partition means so that the receptacle is thermally coupled to-the first chamber more intimately than to the second chamber.'
  • the predetermined quantity of solidified carbon dioxide which the receptacle is adapted to receive, in conjunction with the thermal insulation material, is sufficient to maintain the first chamber at a temperature below 0 C. and the second chamber at a temperature above, but approaching 0 C. for a predetermined time under selected ambiem p ure oalit ns.-
  • FIG. 1 is a front elevation view, with the door thereof open, of a conventional recreational vehicle icebox in which a freezer conversion insert unit according to this invention is disposed;
  • FIG. 2 is a cross-sectional elevation view of the insert unit shown in FIG. 1;
  • FIG. 3 is an enlarged fragmentary elevation view of the structure enclosed within the correspondingly numbered area of FIG. 2;
  • FIG. 4 is an enlarged fragmentary elevation view of the structure enclosed within the correspondingly numbered area of FIG. 2.
  • FIG. 1 illustrates the use of a freezer conversion insert unit of this invention in the internal cavity 11 of a commercially available recreational vehicle icebox 12 having a door 13.
  • Cavity 11 is of generally cubical configuration and is essentially closed on five sides by the icebox housing 14, i.e., the major portion of icebox 12, and is open across one entire side of the cavity to the exterior of the housing.
  • Door 13 is mounted by suitable hinges 15 to the housing for movement into and out of closure relation to the housing across the open side of the cavity.
  • a suitable gasket 16 extends around the periphery of the cavity opening for cooperation with the door in its closed position.
  • cavity 11 When door 13 is closed relative to housing 14, cavity 11 is completely sealed except for the presence of asuitable water drain fitting (not shown) provided in the icebox for draining from the interior thereof such water as results from the melting of ice disposed in the upper portion of the icebox cavity.
  • a suitable water drain fitting (not shown) provided in the icebox for draining from the interior thereof such water as results from the melting of ice disposed in the upper portion of the icebox cavity.
  • the top, bottom, side and back surfaces of cavity 11 are insulated by suitable quantities of thermal insulation material disposed within the hollow walls of housing 14, and door 13 is similarly insulated.
  • the presence of insulation in housing 14 itself is not illustrated in FIG. 1, but thermal insulation 17 within door 13 is shown as typical of the insulation provided within housing 14.
  • Icebox 12 may be any one of a number of commercially available recreational vehicle iceboxes, preferably of the 4 cubic foot size. Since iceboxes are marketed under a number of trademarks and trade names, including the trademarks MOBILAIRE, TRAVLER, CEON, MARVEL, MEYNELL, TU-CO, A.F.P., and GRAND PRIX. In such iceboxes, it is typical for the opposing side wall surfaces 18 and 19 of cavity 11 to define a plurality of aligned horizontal ledge projections 20, 21, 22 and 23. Projections 20 and 21 open in one direction along the height of cavity 11, whereas projections 22 and 23 open in the opposite direction along the height of the cavity.
  • Projections 20-23 are usually symmetrically disposed about the middle of the height of the cavity so that icebox 12 has no true top or bottom. Rather, the icebox may be disposed either as shown in FIG. 1 to provide a left-hand opening icebox or upsidedown relative to FIG. 1 to provide a righthand opening icebox.
  • Ledge projections 21 and 22 are provided for supporting an ice shelf(not shown) which, when positioned in snug mating contact between projections 21 and 22, subdivides the cavity into an upper ice compartment and a lower refrigerated food storage compartment.
  • ledge projections 20 or 23 may be used, if desired, to support a removable shelf within the food storage compartment.
  • FIG. 1 Except for the inclusion of freezer insert unit 10 therein, the subject matter illustrated in FIG. 1 is commercially available equipment which is not per se a part of this invention but which constitutes the environment within which the insert unit is used to advantage.
  • the insert unit is shown in FIG. 1 with its door 40 removed.
  • icebox cavity 11 has top, bottom and back surfaces 24, 25 and 26, respectively.
  • insert unit 10 has a preferably unitary body 30 which is of generally cubical configuration to provide constant thickness walls around a generally cubical cavity 31 defined therein.
  • the cavity has an open front end.
  • body 30 is fabricated of rigid polyurethane foam material of suitable thickness which, in a presently preferred embodiment of the insert unit, is approximately three-fourths inch thick. It will be understood however that any rigid or semi-rigid closed pore synthetic foam material may be used to define body 30.
  • the outer surface of body 30 defines five of the six outer surfaces of unit 10.
  • a liner shell 32 is formed, as by injection molding or vacuum forming techniques, of a suitable plastic material, to mate essentially exactly with cavity 31.
  • liner 32 defines a structurally strong and moisture impermeable lining around the top 34, bottom 35, side 36, and back 37 surfaces of a cavity 33 within unit 10.
  • the liner may be omitted where body 30 is fabricated of a self-skinning synthetic foam material.
  • the liner 32 preferably is of uniform thickness throughout and is configured to define an upwardly open ledge projection 38 which extends into cavity 33 along the back and over a major portion of the front-to-back dimension of the opposite side surfaces of the cavity at a uniform distance below the top surface 34 at about the middle of the height of the cavity.
  • Ledge projection 38 is provided for removably receiving and suppori'z-ing an upwardly open, but otherwise enclosed, dry ice receptacle 39 in the upper portion of cavity 33.
  • a door assembly 40 is connected at its lower end, for example, to the lower portion of body 30 by suitable hinges 41; see also FIG. 3.
  • the door has inner and outer shells 42 and 43 which are spaced from each other over a major portion of their area but which are peripherally hermetically sealed together.
  • the space between the opposing surfaces of the door shells is filled with a quantity of thermal insulation material, preferably.
  • a resilient gasket 45 is carried in a recess 46 defined around the inner periphery of the door to cooperate with body liner 34 around the perimeter of the open front end of cavity 33 when the door is closed, as shown in FIG. 2.
  • a manually operable latch lever 47 (see FIG.
  • Latch lever 47 is carried by a horizontal fulcrum pin 48 at an upper central location on the outer surface of the door adjacent an access recess 49 defined by the door outer shell.
  • Latch lever 47 is configured to cooperate with the rear face of a keeper lip 50 defined by a stationary latch member 51 extending forwardly over the central portion of the open front end of cavity 33.
  • Latch lever 47 and keeper lip 50 cooperate to provide a latching function for the door relative to body 30 when the door is forced sufficiently toward body 30 about hinges 41 to produce moderate compression of gasket 45. The gasket thereafter maintains the engagement of the latch lever and of the keeper lip until the latch lever is manually operated in the manner apparent from FIG. 4.
  • Dry ice receptacle 39 is so sized that when it is engaged on ledge projection 38 in the manner shown in FIG. 2, the forward end of the dry ice receptacle is disposed closely adjacent the inner surface of the closed door. In this manner, the door functions to maintain the dry ice receptacle in a predetermined position within cavity 33. Also it is preferred that receptacle 39 be sealed as tightly as possible against the door and the body liner.
  • the dry ice receptacle When the dry ice receptacle is disposed in the upper portion of cavity 33, it divides the cavity into an upper dry ice chamber 53 and a lower frozen food storage chamber which have approximately equal volume.
  • the capacity of the dry ice receptacle is adequate to receive from 25 to 35 pounds of dry ice.
  • the ice shelf normally disposed between icebox ledge projections 21 and 22 is removed and the conversion unit is inserted into the upper portion of icebox cavity 11.
  • the conversion unit is sized to occupy somewhat less than one-half the volume of icebox cavity 11.
  • the conversion unit is maintained in the extreme upper portion of cavity 11 by suitable fasteners which conveniently take the form of two pairs of adjustable-length brackets 56 (see FIG. 1) which are interposed between the lower corners of body 30 and the upper extent of the lower ones of ledge projections 21 or 22.
  • the body itself may be contoured to register with appropriate ones of ledge projections 20, 21, 22 or 23, or it may be rested on the ice shelf if one is prepared to accept the usable space reduction inherent in this mounting method.
  • the ice supporting shelf normally installed in icebox l2 completely fills that horizontal space of cavity 11 which has its upper and lower limits defined by the upper and lower extremities of ledge projections 21 and 22. It will be observed from FIG. 1 that the usable refrigerated volume of cavity 11, ie., that portion of cavity 11 not occupied by freezer conversion insert 10, is greater than the volume which would normally exist in the lower portion of the icebox cavity if the ice supporting shelf were present. It is apparent, therefore, that the use of insert unit 10 in icebox 12 increases the usable refrigerated storage volume available in the lower portion of icebox cavity 11. The insert 10 provides additional frozen food storage capacity in the frozen food chamber 54 within the insert.
  • the lower portion of body 30 provides a thermally insulated partition between frozen food storage chamber 54 and the refrigerated food storage chamber.
  • dry ice receptacle 39 because of the partition and the insert door 40, is thermally more intimately coupled to the frozen food storage chamber than to the refrigerated food storage chamber. Therefore, dry ice in the receptacle is effective to maintain the frozen food storage chamber at a lower temperature, below 1 C., than the temperature, above but approaching 0 C, which is obtained in the refrigerated food storage chamber.
  • the thermal insulating properties of insert unit 10 per se are defined in combination with thermal insulating properties of icebox 12 in conjunction with the amount of dry ice which may be disposed in dry ice receptacle39 during use of the conversion unit as installed in icebox 12.
  • the insulative characteristics of insert 10 are balanced to the insulative characteristics of icebox 12 so that, as dry ice disposed in the insert unit sublimes, frozen food compartment 54 and its contents are maintained at a temperature well below freezing, and the lower portion of icebox cavity 11 is maintained at a temperature of about 40 F. for from 3- 42 to 4 days in the presence of ambient temperatures of about 78 F.
  • the freezer compartment ie., frozen food storagechamber 54
  • the freezer compartment has its temperature controlled by passive mechanisms, including the latent heat of fusion of the dry ice disposed in receptacle 39 and the heat transfer rates of the insulation of insert l0 itself and of icebox 12.
  • the sublimation temperature of dry ice is approximately -l09 F.
  • the heat lost from insert 10 to icebox cavity 11 must equal the quantity of heat lost from the icebox cavity to the exterior of the icebox; this is true since-insert unit 10 is disposed wholly within icebox cavity 11. If it is desired that the refrigeration space (i;e., the lower portion of icebox cavity 11) be maintained at a temperature of 40 F. when the ambient temperature is 78 by reason of dry ice disposed in receptacle 39, it can be shown that under conditions of thermal equilibrium a change of 4 F. would be expected in the temperature of the refrigeration space .from each 5 F. change in ambient temperature. Al-
  • freezer conversion insert units like that described above (ie., insert units useful in 4 cubic foot recreational vehicle iceboxes) that the actual temperature change in the refrigeration space is approximately 3 F. for every 5 F. change in ambient temperature, and that this is true for the ambient temperature range between about F. and about F.
  • freezer conversion insert units for recreational vehicle iceboxes constructed according'to the foregoing description are more efficient than is indicated by a theoretical analysis of the operation of the inserts under conditions of thermal equilibrium.
  • the desired temperature is maintained substantially constant in the lower portion of cavity 11 until about 5 pounds of dry ice remains in receptacle 39, and as the last 5 pounds or so of dry ice is used, the temperature in the cavity rises slightly. It has been found that the extent to which the desired temperature is maintained constant in the cavity is enhanced by sealing the receptacle as closely as possible between door 40 and the interior of body 30. Also, the desired temperature control of the insert unit is surprisingly insensitive to the amount of surface area presen ted by the dry ice.
  • An improved refrigerator and freezer food storage assembly comprising a housing defining a cavity therein, the cavity having an opening from the housing along the extent of one side thereof, door means releasably engageable with the housing across the one side of the cavity for closing the cavity opening, sealing means cooperating between the door means and the housing for providing an essentially'airtight seal between the door means and the housing in the closed position of the door means relative to the housing, thermal insulation material carried by the housing and the door means for fully enclosing the cavity in the closed position of the door means relative to the housing, thermal insulating partition means in the housing for subdividing the cavity into first and second chambers, receptacle means for receiving a predetermined quantity of solidified carbon dioxide, means mounting the receptacle means in the first chamber in operative thermal association therewith, the mounting means and the receptacle cooperating for removability of the receptacle means from the first chamber through said cavity opening, thermal insulation material operatively associated with the partition means over the entire extent of the partition means between the first
  • Apparatus according to claim 1 comprising a thermally insulated openable container removably disposed in the cavity in an upper portion thereof and defining said first chamber therein and the partition means, the receptacle means comprising a pan removably disposed in the container and dividing the first chamber into an upper coolant compartment and a lower frozen food storage compartment.
  • Apparatus according to claim 2 wherein the container has a body defined principally of a unitary mass of rigid closed pore synthetic foam material.
  • the cavity has opposing side wall surfaces configured to define support means for an ice shelf transversely of the cavity at substantially the midheight of the cavity, and means coupled between the container and the support means for positioning the container in the cavity in the absence of engagement of an ice shelf with the support means.
  • an icebox for recreational vehicles and the like including an insulated housing defining a cavity therein and an insulated door hinged to the housing for movement into and out of a closed position across an open side of the cavity
  • the insert unit comprising a body defined principally of a thermally insulating material and defining a chamber therein which is fully closed except for being open to the exterior of the body across a side of the cavity, a thermally insulated door connected to the body for movement into and out of a closed position across the open side of the cavity, a receptacle removably disposed in an upper portion of the chamber for receiving a predetermined quantity of solidified carbon dioxide, the remainder of the chamber being adapted to receive foodstuffs, and means for mounting the insert body in the upper portion of the icebox cavity, the body and the door therefor being sized to be disposed in the icebox cavity in the closed position of the icebox
  • Apparatus according to claim 8 wherein the icebox cavity has opposing side walls defining aligned projections adapted for receiving and supporting an ice shelf, and wherein the means for mounting the insert body in the cavity comprises means cooperating between the body and said projections.
  • a conversion unit for converting a wet ice food cooler having a unitary ice and food receiving cavity and an ice support shelf removably supported on projections extending from side walls of the cavity for supporting a quantity of ice in an upper portion of the cavity, to a refrigerator and freezer food storage device
  • the conversion unit comprising a housing defining therein a chamber having permanently closed top, bottom, back and side surfaces and a front opening, door means releasably engageable with the housing for closing the chamber front opening, gasket means cooperating between the doormeans and the housing for providing an essentially airtight seal between the housing and the door means in the closed position of the door means relative to the housing, a quantity of thermal insulation material in the door means and in the housing around the closed surfaces of the chamber, receptacle means removably disposed in the chamber in an upper portion thereof and occupying only a portion of the volume thereof for receiving a predetermined quantity of solidified carbon dioxide, the housing with the door means therefor being sized to be disposed wholly within
  • a conversion unit wherein the housing with the door means therefor has an overall volume less than the volume of the coolercavity above the ice shelf projections andwherein the means en-- I gageable with the housing for supporting the housing is arranged for supporting the housing above the cooler ice shelf support projections whereby, when the housing is supported in the cavity from said projections, the cavity belowthe housing defines a greater food storage capacity than when the ice support shelf issupported on said projections.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US00253414A 1972-05-15 1972-05-15 Food storage and cooling apparatus Expired - Lifetime US3800554A (en)

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US25341472A 1972-05-15 1972-05-15

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US (1) US3800554A (de)
AU (1) AU5565573A (de)
DE (1) DE2324145A1 (de)
FR (1) FR2184864B3 (de)
IT (1) IT986559B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020192A (en) * 1973-09-10 1977-04-26 Fuji Xerox Co., Ltd. Xerographic reproduction process and toner carrier for use therewith
WO2000000776A1 (en) * 1998-06-26 2000-01-06 Norsk Hydro Asa Method and container for transporting or storing goods, in particular food products in a frozen and/or chilled state
US6295830B1 (en) 2001-02-28 2001-10-02 The Boc Group, Inc. Portable container for refrigerated or frozen goods
US20060260343A1 (en) * 2005-05-18 2006-11-23 Maytag Corporation Refrigerator ice compartment latch and seal
US8893524B1 (en) 2013-11-11 2014-11-25 John D. Archer Dry ice container
DE102013006145B4 (de) * 2013-04-10 2021-02-18 Diehl Aviation Hamburg Gmbh Kabinenmonument und Flugzeugkabine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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DE2731858A1 (de) * 1977-07-14 1979-02-01 Martin A Dipl Ing Frank Verfahren zur kuehlhaltung von guetern in kuehlcontainern und kuehlcontainer
FR2717565B1 (fr) * 1994-03-15 1996-08-14 Hobart Cie Elément à double fonction de transfert thermique pour enceintes isothermes; enceinte isothermique équipée d'un tel élément.
DE102012204876A1 (de) * 2012-03-27 2013-10-02 Spiriant Gmbh Wärmeisolationseinsatz für Servierwagen
NL2011754C2 (en) * 2013-11-07 2015-05-11 Gils Stephanus Johannes Van Galley container.
CN116294415B (zh) * 2023-04-06 2024-09-24 珠海格力电器股份有限公司 一种冰箱控制方法、装置及冰箱

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US1951679A (en) * 1930-11-03 1934-03-20 Charles Diehl Refrigerating apparatus
US1900855A (en) * 1931-01-12 1933-03-07 Cold Control Corp Ventilating means for refrigerators
US2056731A (en) * 1932-02-17 1936-10-06 Lithgow John Refrigerator
US1965205A (en) * 1932-03-12 1934-07-03 Walter L Smith Method of and apparatus for refrigeration with solid carbon dioxide
US2011881A (en) * 1933-07-31 1935-08-20 William M Stewart Cooling unit
US2024490A (en) * 1934-06-09 1935-12-17 Koldaire Utilities Company Inc Dry ice refrigeration by conduction
US2039334A (en) * 1934-10-05 1936-05-05 Frederick G Richardson Refrigerator
US2143239A (en) * 1936-12-12 1939-01-10 Coffee Et Inc Cabinet
US2400742A (en) * 1942-11-16 1946-05-21 Leonard F Clerc Portable refrigerating device
US2493647A (en) * 1946-04-30 1950-01-03 Beekman Ind Inc Refrigerating storage unit
US2768505A (en) * 1954-04-27 1956-10-30 Burton Rodgers Inc Two temperature portable refrigerator
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US3406532A (en) * 1966-11-09 1968-10-22 Aladdin Ind Inc Food and beverage containers having integral compartments containing a freezable liquid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020192A (en) * 1973-09-10 1977-04-26 Fuji Xerox Co., Ltd. Xerographic reproduction process and toner carrier for use therewith
WO2000000776A1 (en) * 1998-06-26 2000-01-06 Norsk Hydro Asa Method and container for transporting or storing goods, in particular food products in a frozen and/or chilled state
US6131404A (en) * 1998-06-26 2000-10-17 H & R Industries, Inc. Insulated container
US6295830B1 (en) 2001-02-28 2001-10-02 The Boc Group, Inc. Portable container for refrigerated or frozen goods
US20060260343A1 (en) * 2005-05-18 2006-11-23 Maytag Corporation Refrigerator ice compartment latch and seal
US7726148B2 (en) * 2005-05-18 2010-06-01 Maytag Corporation Refrigerator ice compartment seal
DE102013006145B4 (de) * 2013-04-10 2021-02-18 Diehl Aviation Hamburg Gmbh Kabinenmonument und Flugzeugkabine
US8893524B1 (en) 2013-11-11 2014-11-25 John D. Archer Dry ice container

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AU5565573A (en) 1974-11-14
DE2324145A1 (de) 1973-11-29
FR2184864B3 (de) 1976-04-30
FR2184864A1 (de) 1973-12-28
IT986559B (it) 1975-01-30

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