US3243855A - Cold space door - Google Patents

Cold space door Download PDF

Info

Publication number
US3243855A
US3243855A US436402A US43640265A US3243855A US 3243855 A US3243855 A US 3243855A US 436402 A US436402 A US 436402A US 43640265 A US43640265 A US 43640265A US 3243855 A US3243855 A US 3243855A
Authority
US
United States
Prior art keywords
shell
door
shells
cold space
rigid insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US436402A
Inventor
Irving S Houvener
Albert J Palfey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to US436402A priority Critical patent/US3243855A/en
Application granted granted Critical
Publication of US3243855A publication Critical patent/US3243855A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/02Doors; Covers

Description

April 1966 1. s. HOUVENER ETAL 3,243,855
COLD SPACE DOOR Filed Feb. 8, 1965 m 0 S v/ r J w 5 w m I m w O 2 M 2 I WNW 5 4 )12 United States Patent Office 3. .85 COLD SPACE DOOR 4 Irving S. Houvener, Houghtoir Lake, and Albert J. Palfey, Midland, Mich, assi'gnor's to The Dow Chemical Com pany, Midland, Mich, a corporation of Delaware Filed Feb, 8, 1965, SenNo. 436,402 4 Claims. (CI. -35) This application is a continuationdn-part of copending application Serial No. 250,836 filed January 11, 1963, now abandoned.
This invention relates to an improvement in cold space doors, of the insulated type, such as used on refrigerators, walk-in cold storage rooms, and the like.
A cold space door, of the type with which this invention is concerned, is subjected tostra-ins caused by a temperature differential resulting from temperature differences between theinner and outer panels of the door. Such a temperature differential can cause warpage resulting in leaks and/ or damage or the doorsuch as by crackiiig, especially where the temperature differential is quite severe, thus rendering the door inefficient, or inoperative.
It is therefore an object of this invention to provide a cold space door which will not be warped or damaged by temperature differential between the and outer shell of the door.
Another object of this invention is to provide a cold space door which counteracts temperature differential to which the door is exposed, by allowing unrestrained relative expansion and contraction between the door inner and outer shells.
Still another object is to provide a cold space door wherein assemblage may be effected without use of fastening means, or welding. v V
Other objects of the invention will in part be obvious and will in part appear hereinafter.
Briefly, the cold space door of the present invention solves the problem of counter-acting temperature dif-' ferential, by allowing unrestrained expansion, or contraction, of the door inner and outer shells relative to each other. This is accomplished by arranging the peripheral edge of the door outer shell so that it overlaps the peripheral edge of the door inner shell in a manner which allows relative sliding movement therebetween. A rigid insulating material is disposed in and substantially fills the space between the inner and outer door shells to position the inner shell and outer shell in spaced relationship, with the inner shell in sliding contact with the peripheral edge of the outer shell. A sheet of flexible insulation is positioned in a compressed state bet-ween the rigid insulating material, and the periphery of the inner shell to forcibly urge the inner shell in sliding engagement with the outer shell. Among the other features of the door is the manner of assembly wherein no fastening means, or welding, is required.
The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the invention will be indicated in the claims.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the acoompanying drawings, in which:
FIGURE 1 is an elevation view of a cold space door embodying the principles of the invention; and
FIGURE 2 is an enlarged section view generally as seen along line 22 in FIG. 1.
Similar reference characters refer to similar parts throughout the several views of the drawing.
Referring now to the drawing, numeral 6 identifies a door illustrative of an embodiment of the invention which door is mounted by hinges 8, to enclose an opening 10 of a cold storage room defined in part by an insulated wall -12. A bar-type lock, including a bar or latch '14,
ing-10, all as is well known to those skilled in the art.
The door 6 includes an outer shell 20 secured to a door frame 22 the peripheral edge of which bent, or spun over on assembly, to provide an inwardly extending flat surface24, and a dished inner shell 26 formed to provide, a flange portion having a flat peripheral surface 28 a por tion of which is in sliding engagementwith the outer shell sunface 24. An overlapping relationship is thus provided at the peripheral regions of the shells which affords sliding contact therebetween. The material of the inner shell maybe plastic or metal sheet. In certain installations, the frame 22 may be omitted and the outer shell may be bent over to provide the overlapping peripheral edge as required for sliding engagement with the inner shell.
Insulating material 30 preferably made of a plastic foam which is quite rigid, such as polystyrene, or polyethylene, is positioned between the outer shell 20 and inner shell 26 and substantially fills the space ther'ebetween to maintain the shells 20 and 26 in spaced relationship and the peripheral edge of surface 24 of the inner shell 26 in sliding contact with thev periperal edge or surface 28 of the outer shell 20. A sheet of flexible insulation 32, which is easily compressible and has elastic recovery, which may be made of rubber, or equivalent, is arranged in a compressed state between the insulating material 30, and the outer portion or the inner shell 26. The insulating material 30 forcibly urges the flat peripheral edge or surface 24 of the inner shell '26 in sliding engagement with the flat peripheral edge or surface 24 of the outer shell 20.
An adhesive substance is applied to the surfaces of the insulating material 30, or to the surfaces with which the insulating material will contact upon assembly, whereby the door will be maintained in assembled condition, with the surfaces 24 and 28 in sliding engagement. A door sealing means 34 is provided between the periphery of the door 6 and the opening 10, which sealing means may be affixed to either the door, or the door opening, and which may be a rubber gasket, or a magnetic type of seal, as sometimes used in cold space door installations.
From the foregoing it will be seen that the door 6 will allow unrestrained expansion or contraction of the inner shell 26, and outer shell 20 due to temperature differential, without danger of warpage or damage of the door, since the shells are positioned for relative sliding movement by virtue of the engagement of surfaces 24 and 28. The compressible insulation .32 allows for relative movement of the shells due to temperature differential. It will also be noted that the door 6 may be assembled without the use of fastening means, or welding. Attention is directed to the fact that the peripheral edge of the inner shell 26 is spaced from the enclosing portion of the outer shell 20, so that it is free to expand without contacting or abutting the outer shell. This is an important feature of construction, since it avoids any strain placed upon the shells due to dimensional change as a result of temperature differential.
From the foregoing it will be seen that the door 6 will satisfy all of the objectives set forth hereinbefore.
It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efliciently attained and, since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the ac- Patented Apr. 5', 1966- companying drawing shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.
Now that the invention has been described, what is claimed as new. and desired to be secured by Letters Patent is:
1. A door construction comprising in combination, an inner shell and an outer shell, said .outer shell having formed about its periphery an overlapping engagement with said inner shell to provide a slidable contact surface between said shells, a rigid insulating material positioned between said inner and outer shells and a sheet of flexible insulation which is easily compressible and has elastic recovery arranged in a compressed state between said rigid insulating material and the outer edge portion of said inner shell whereby the door will be maintained in assembled condition and said inner shell shall be in sliding engagement with said outer shell at said slidable contact surface.
2. A'door construction comprising in combination, a dished inner shell having a flanged portion with a flat peripheral surface, an outer shellhaving a bent peripheral surface which overlaps said flat peripheral surface of said flange to retain said inner shell Within said outer shell and to provide a slidable contact surface for said inner shell for allowing said inner shell to freely move relative to said outer shell, a rigid insulating material positioned between said inner and outer shells and a sheet of flexible insulation which is easily compressible and has elastic recovery arranged in a compressed state between said rigid insulating material and the periphery of said inner shell whereby the door .will be maintained in assembled condition and said inner shell shall be in sliding engagement with said outer shell at said slidable contact surface.
3. A door construction comprising in combination, an
inner shell and an outer shell, said outer shell having formed about its periphery an overlapping engagement with said inner shell to provide a slidable contact surface between said shells, a rigid insulating material positioned between said inner and outer shells and a sheet of flexible insulation which is easily compressible and has elastic recovery arranged in a compressed state between said rigid insulating material and the outer edge portion of said inner shell whereby the door Will be maintained in assembled condition and said inner shell shall be in sliding engagement with said outer shell at said slidable contact surface to counteract temperature differential, by allowing unrestrained expansion, or contraction, of the inner and outer shells relative to each other.
4. A door construction'comprising in combination, a dished inner shell having a flanged portion with a fiat peripheral surface, an outer shell having a bent peripheral surface which overlaps said flat peripheral surface of said flange to retain said inner shell within said outer shell and to provide a slidable contact surface for said inner shell for allowing said inner shell to freely move relative to said outer shell, a rigid insulating material positioned between said inner and outer shells and a sheet of flexible insulation which is easily compressible and has elastic recovery arranged in a compressed state between said rigid insulating material and the periphery of said inner shell whereby the door will be maintained in assembled condition and said inner shell shall be in sliding engagement with said outer shell at said slidable contact surface to counteract temperature differential, by allowing unrestrained expansion, or contraction, of the inner and outer shells relative to each other.
References Cited by the Examiner V UNITED STATES PATENTS 2,622,754 12/1952 Eagels'. 2,878,534 3/1959 Josaitis 20-35 3,078,003 2/1963 Kesling 20-35 REINA'LDO P. MACHADO, Primary Examiner.
HARRISON R. MOSE'LEY, Examiner.

Claims (1)

1. A DOOR CONSTRUCTION COMPRISING IN COMBINATION, AN INNER SHELL AND AN OUTER SHELL, SAID OUTER SHELL HAVING FORMED ABOUT ITS PERIPHERY AN OVERLAPPING ENGAGEMENT WITH SAID INNER SHELL TO PROVIDE A SLIDABLE CONTACT SURFACE BETWEEN SAID SHELL, A RIGID INSULATING MATERIAL POSITIONED BETWEEN SAID INNER AND OUTER SHELLS AND A SHEET OF FLEXIBLE INSULATION WHICH IS EASILY COMPRESSIBLE AND HAS ELASTIC RECOVERY ARRANGED IN A COMPRESSED STATE BETWEEN SAID RIGID INSULATING MATERIAL AND THE OUTER EDGE PORTION OF SAID INNER SHELL WHEREBY THE DOOR WITH BE MAINTAINED IN ASSEMBLED CONDITION AND SAID INNER SHELL SHALL BE IN SLIDING ENGAGEMENT WITH SAID OUTER SHELL AT SAID SLIDABLE CONTACT SURFACE.
US436402A 1965-02-08 1965-02-08 Cold space door Expired - Lifetime US3243855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US436402A US3243855A (en) 1965-02-08 1965-02-08 Cold space door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US436402A US3243855A (en) 1965-02-08 1965-02-08 Cold space door

Publications (1)

Publication Number Publication Date
US3243855A true US3243855A (en) 1966-04-05

Family

ID=23732249

Family Applications (1)

Application Number Title Priority Date Filing Date
US436402A Expired - Lifetime US3243855A (en) 1965-02-08 1965-02-08 Cold space door

Country Status (1)

Country Link
US (1) US3243855A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335538A (en) * 1964-05-06 1967-08-15 Maille & Vagneux Ets Refrigerator doors
US3883198A (en) * 1973-09-07 1975-05-13 Whirlpool Co Cabinet construction
US3915527A (en) * 1973-09-07 1975-10-28 Whirlpool Co Cabinet construction
US4009917A (en) * 1973-05-21 1977-03-01 The Dow Chemical Company Compression stressed liner for refrigeration equipment and method of making same
FR2459950A1 (en) * 1979-06-23 1981-01-16 Westfalia Werke Knoebel CABINET FOR CARAVAN TRACTEE OR AUTOMOBILE
US20060258284A1 (en) * 2005-05-16 2006-11-16 Melesky James B System for Insulating Attic Openings
US20100186299A1 (en) * 2001-12-21 2010-07-29 Melesky James B Insulation Cover for Attic Closures
US8661750B2 (en) 2001-12-21 2014-03-04 James B. Melesky Systems and methods for insulating attic openings
US9062480B2 (en) 2012-08-14 2015-06-23 Whirlpool Corporation Gasket and flange design on a refrigerator for better energy efficiency

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622754A (en) * 1948-04-23 1952-12-23 Gen Electric Refrigerator cabinet construction
US2878534A (en) * 1956-10-09 1959-03-24 American Motors Corp Refrigerating apparatus
US3078003A (en) * 1960-07-25 1963-02-19 Gen Motors Corp Refrigerator cabinet construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622754A (en) * 1948-04-23 1952-12-23 Gen Electric Refrigerator cabinet construction
US2878534A (en) * 1956-10-09 1959-03-24 American Motors Corp Refrigerating apparatus
US3078003A (en) * 1960-07-25 1963-02-19 Gen Motors Corp Refrigerator cabinet construction

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335538A (en) * 1964-05-06 1967-08-15 Maille & Vagneux Ets Refrigerator doors
US4009917A (en) * 1973-05-21 1977-03-01 The Dow Chemical Company Compression stressed liner for refrigeration equipment and method of making same
US3883198A (en) * 1973-09-07 1975-05-13 Whirlpool Co Cabinet construction
US3915527A (en) * 1973-09-07 1975-10-28 Whirlpool Co Cabinet construction
FR2459950A1 (en) * 1979-06-23 1981-01-16 Westfalia Werke Knoebel CABINET FOR CARAVAN TRACTEE OR AUTOMOBILE
US8413393B2 (en) 2001-12-21 2013-04-09 James B. Melesky Insulation cover for attic closures
US9803416B2 (en) 2001-12-21 2017-10-31 James B. Melesky Systems and methods for insulating attic openings
US20100186299A1 (en) * 2001-12-21 2010-07-29 Melesky James B Insulation Cover for Attic Closures
US9435116B2 (en) 2001-12-21 2016-09-06 James B. Melesky Systems and methods for insulating attic openings
US9260858B2 (en) 2001-12-21 2016-02-16 James B. Melesky Systems and methods for insulating attic openings
US8661750B2 (en) 2001-12-21 2014-03-04 James B. Melesky Systems and methods for insulating attic openings
US10435939B2 (en) 2001-12-21 2019-10-08 James B. Melesky Systems and methods for insulating attic openings
US20110225899A1 (en) * 2005-05-16 2011-09-22 Melesky James B System for Insulating Attic Openings
US8869473B2 (en) 2005-05-16 2014-10-28 James B. Melesky System for insulating attic openings
US7849644B2 (en) * 2005-05-16 2010-12-14 Melesky James B System for insulating attic openings
US20100275536A1 (en) * 2005-05-16 2010-11-04 Melesky James B System for Insulating Attic Openings
US20060258284A1 (en) * 2005-05-16 2006-11-16 Melesky James B System for Insulating Attic Openings
US7926229B2 (en) 2005-05-16 2011-04-19 Melesky James B System for insulating attic openings
US9062480B2 (en) 2012-08-14 2015-06-23 Whirlpool Corporation Gasket and flange design on a refrigerator for better energy efficiency

Similar Documents

Publication Publication Date Title
US5215312A (en) Housing with a pressure-equalizing element which is retained water-tightly around the edges within a housing wall opening
US3286577A (en) Shouldered washer and fastening element
US3786613A (en) Sheet metal door with foam plastic core
US5018330A (en) Door light
US3276167A (en) Sealing element
US3656260A (en) Channel held weather seal
US2841203A (en) Thermal insulation
US3378956A (en) Extruded sealing member
US2659118A (en) Magnetic door seal
US4805293A (en) Insulated cabinet manufacture
US2868575A (en) Gasket and method of making same
US3512805A (en) Means for joining two conduits
JP2005300131A (en) Sealing structure for refrigerator
US3114561A (en) Composite seal with resilient expansion member
US3127965A (en) Plastic trim molding clip with protective flange
US3306620A (en) Thermally stable lip seal
US2935771A (en) Sealing arrangement
JP2522621B2 (en) Cassette type packing
US2937039A (en) Controlled gap seal
US3813102A (en) Locking and sealing ring
US2280389A (en) Window construction
US3612453A (en) Gutter support and trim means for mobile homes and the like
US3511513A (en) Combination axial-mechanical face and radial lip seal
US5297360A (en) Refrigerator cabinet with combination sealing arrangement
CA1314152C (en) Snap-in gasket system for refrigerator and freezer doors