US3353321A - Thermal breaker strip - Google Patents

Thermal breaker strip Download PDF

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Publication number
US3353321A
US3353321A US487538A US48753865A US3353321A US 3353321 A US3353321 A US 3353321A US 487538 A US487538 A US 487538A US 48753865 A US48753865 A US 48753865A US 3353321 A US3353321 A US 3353321A
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United States
Prior art keywords
strip
breaker strip
body portion
cabinet
thermal breaker
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Expired - Lifetime
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US487538A
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Jerome P Heilweil
Albert E Schweizer
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STAR METAL CORP
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STAR METAL CORP
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Priority to US487538A priority Critical patent/US3353321A/en
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Publication of US3353321A publication Critical patent/US3353321A/en
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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
    • F25D23/085—Breaking strips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S49/00—Movable or removable closures
    • Y10S49/01—Thermal breaks for frames

Definitions

  • ABSTRACT F THE DISCLOSURE A thermal breaker strip for iinishing the edge of a refrigerated, or heated, cabinet wall and for thermally insulating it from the door of the cabinet while insulating the inner liner from the outer shell.
  • the strip also carries a magnetically permeable element.
  • Our invention relates to a thermal breaker strip adapted to enclose the front edge of an inner liner and the front edge of an outer shell which, with the insulation therebetween, constitute the wall of a refrigerator cabinet and in other apparatus where it may be necessary that the iiow path of heat be interrupted.
  • the object of this invention is to produce an improved construction wherein the breaker strip is inexpensive to make; presents an attractive appearance and is easy to install.
  • FIG. l is a front elevational View of a refrigerator embodying the invention.
  • FIG. 2 is an enlarged sectional View looking in the direction of line 2-2 on FIG. 1.
  • FIG. 3 is an enlarged cross sectional view of the strip shown detached.
  • C designates the cabinet of a re,- frigerator and D designates the door.
  • the cabinet is formed of an inner liner and an outer shell 12 which dene a space for receiving suitable insulation 14.
  • the thermal breaker strip serves to close the -gap l'between the front edges of the inner liner and the outer shell to prevent metal to metal contact therebetween and between them and the door or any other object.
  • the breaker strip includes a central body portion 16 of substantial thickness and of a width substantially equal to the thickness of the cabinet wall or the distance between liner 10 and shell 12. Near its opposite ends the body portion 16 of the strip is reduced to form relatively thin corners 18 which are eX- tended to form side walls 20 and 22 which are disposed at acute angles with reference to the plane of body portion 16. Reduced corners 18 provide a certain amount of springiness which permits movement of side walls 20 and 22 from the solid to the broken line position of FIG. 3.
  • body portion 16 is provided with a locking member 23 formed of inner walls 24 and 26 which are integral with body portion 16 and of outer walls 28 and which stop short of body portion 16 to form outwardly diverging troughs 32 Vand 34.
  • body portion 16 On its outer side, body portion 16 has outwardly converging grooves 35 for receiving the similarly converging ends 36 of a metal strip 38.
  • the breaker strip shown in FIG. 3 is applied to the front wall of the cabinet, as shown in FIG. 2 so as to close the gap between the edges of the in-turned ends 13 and 15 3,353,321 Patented Nov. 21, 1967 of liner 10 and shell 12 with troughs 32 and 34 projecting inwardly into the space between the liners.
  • a foam-forming composition of any available type, such as polyurethane is then introduced into the space between the inner liner 10 and outer shell 12 which composition, when fully reacted, produce a light, rigid, heat insulating material 14 which adheres to the liners and to the breaker strip and which, by filling troughs 32 and 34 anchors the strip in position.
  • the body portion 16 of the breaker strip is provided with areas 19 of reduced cross section which provide additional space to be iilled by the foam insulation 14, hence adding structural rigidity to the breaker strip.
  • the -manner in which the foaming referred to is carried out forms no part of this invention.
  • the locking member has a width greater than the opening between flanges 13 and 15 and that it has to be compressed to be forced through said opening. This serves to hold the strip in position during the pouring of the foaming chemicals and it makes for better anchorage when the foaming chemicals have set into solid foam.
  • Metal strip 38 coacts with a ymagnet 40 which is carried by a gasket, to draw the door to its closed position.
  • Tle gasket is shown and claimed in a separate application but,
  • gasket is carried by flexible arms 42 which are integral with a base member 44 which covers a gap 46 formed in the inner liner 48 of door D and which carries locking members 50 which are adapted to be embedded in a foam-forming insulation such as insulation 14.
  • the marginal portions of liners 10 and 12 are bent as at 52 so as to provide seats for the walls 20 and 22 of the breaker strips.
  • the foaming material is introduced to integrate the breaker strip with the cabinet.
  • the breaker strip thus serves as the front wall of the cabinet and eifectively interrupts the flow path of heat.
  • a thermal breaker strip for the edge of a cabinet wall formed of an inner liner, an outer shell, and insulating material between, and adhered to, said liner and said shell,
  • said strip formed of plastic heat insulating material including:
  • a locking member carried by said body portion for engagement with said insulating material to hold said strip in place

Description

THERMAL BREAKER STRI P Filed Sept. 15,. 1965 United States Patent O 3,353,321 THERMAL BREAKER STRl Jerome P. Heilweil, Wynnewood, and Albert E.
Schweizer, Morrisville, Pa., assignors to Star Metal Corporation, Philadelphia, Pa., a corporation of Pennsylvania Filed Sept. 15, 1965, Ser. No. 487,538 1 Claim. (Cl. 52-716) ABSTRACT F THE DISCLOSURE A thermal breaker strip for iinishing the edge of a refrigerated, or heated, cabinet wall and for thermally insulating it from the door of the cabinet while insulating the inner liner from the outer shell. The strip also carries a magnetically permeable element.
Our invention relates to a thermal breaker strip adapted to enclose the front edge of an inner liner and the front edge of an outer shell which, with the insulation therebetween, constitute the wall of a refrigerator cabinet and in other apparatus where it may be necessary that the iiow path of heat be interrupted.
The object of this invention is to produce an improved construction wherein the breaker strip is inexpensive to make; presents an attractive appearance and is easy to install.
The full nature of the invention will be understood from the following specification and the accompanying drawings in which:
FIG. l is a front elevational View of a refrigerator embodying the invention.
FIG. 2 is an enlarged sectional View looking in the direction of line 2-2 on FIG. 1.
FIG. 3 is an enlarged cross sectional view of the strip shown detached.
In the drawings, C designates the cabinet of a re,- frigerator and D designates the door.
The cabinet is formed of an inner liner and an outer shell 12 which dene a space for receiving suitable insulation 14.
According to our invention, the thermal breaker strip serves to close the -gap l'between the front edges of the inner liner and the outer shell to prevent metal to metal contact therebetween and between them and the door or any other object.
As best shown in FIG. 3, the breaker strip includes a central body portion 16 of substantial thickness and of a width substantially equal to the thickness of the cabinet wall or the distance between liner 10 and shell 12. Near its opposite ends the body portion 16 of the strip is reduced to form relatively thin corners 18 which are eX- tended to form side walls 20 and 22 which are disposed at acute angles with reference to the plane of body portion 16. Reduced corners 18 provide a certain amount of springiness which permits movement of side walls 20 and 22 from the solid to the broken line position of FIG. 3.
Additionally, body portion 16 is provided with a locking member 23 formed of inner walls 24 and 26 which are integral with body portion 16 and of outer walls 28 and which stop short of body portion 16 to form outwardly diverging troughs 32 Vand 34. On its outer side, body portion 16 has outwardly converging grooves 35 for receiving the similarly converging ends 36 of a metal strip 38.
The breaker strip shown in FIG. 3 is applied to the front wall of the cabinet, as shown in FIG. 2 so as to close the gap between the edges of the in-turned ends 13 and 15 3,353,321 Patented Nov. 21, 1967 of liner 10 and shell 12 with troughs 32 and 34 projecting inwardly into the space between the liners. A foam-forming composition of any available type, such as polyurethane, is then introduced into the space between the inner liner 10 and outer shell 12 which composition, when fully reacted, produce a light, rigid, heat insulating material 14 which adheres to the liners and to the breaker strip and which, by filling troughs 32 and 34 anchors the strip in position. It will be noticed that the body portion 16 of the breaker strip is provided with areas 19 of reduced cross section which provide additional space to be iilled by the foam insulation 14, hence adding structural rigidity to the breaker strip. The -manner in which the foaming referred to is carried out forms no part of this invention.
It will be noted that the locking member has a width greater than the opening between flanges 13 and 15 and that it has to be compressed to be forced through said opening. This serves to hold the strip in position during the pouring of the foaming chemicals and it makes for better anchorage when the foaming chemicals have set into solid foam.
Metal strip 38 coacts with a ymagnet 40 which is carried by a gasket, to draw the door to its closed position. Tle gasket is shown and claimed in a separate application but,
in order to make reference to said application unneces sary, it is pointed out that gasket is carried by flexible arms 42 which are integral with a base member 44 which covers a gap 46 formed in the inner liner 48 of door D and which carries locking members 50 which are adapted to be embedded in a foam-forming insulation such as insulation 14.
In use, the marginal portions of liners 10 and 12 are bent as at 52 so as to provide seats for the walls 20 and 22 of the breaker strips. With the breaker strip thus assembled, the foaming material is introduced to integrate the breaker strip with the cabinet. The breaker strip thus serves as the front wall of the cabinet and eifectively interrupts the flow path of heat.
What we claim is:
A thermal breaker strip for the edge of a cabinet wall formed of an inner liner, an outer shell, and insulating material between, and adhered to, said liner and said shell,
said strip formed of plastic heat insulating material including:
a body portion and side flanges coacting to form a channel for enclosing the edge and adjacent marginal portions of said cabinet wall,
a locking member carried by said body portion for engagement with said insulating material to hold said strip in place,
therebeing spaced, outwardly converging grooves in the outer face of said body portion, and
a magnetically permeable element comprising =a body portion overlying the body portion of the breaker strip and having inwardly diverging flanges engaging said grooves thereby securing said element in place.
References Cited UNITED STATES PATENTS 2,307,094 1/ 1943 Yoxsimer 49-486 2,821,430 1/ 1958 Grede 49-489 X 3,130,455 4/1964 Borlenghi 42-211 X 3,226,367 12/ 1965 Monti 49-487 FOREIGN PATENTS 840,934 7/1960 Great Britain.
KENNETH DOWNEY, Primary Examiner.
US487538A 1965-09-15 1965-09-15 Thermal breaker strip Expired - Lifetime US3353321A (en)

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411304A (en) * 1967-05-15 1968-11-19 Barberton Plastics Products In Dock fender
US3512304A (en) * 1968-08-01 1970-05-19 Morgan Co Insulated panel door
US3524290A (en) * 1968-06-18 1970-08-18 Standard Products Co Receiver for spline-type gaskets
US3604152A (en) * 1969-10-20 1971-09-14 Ever Roll Mfg Corp Magnetic threshold construction
US3631630A (en) * 1970-05-25 1972-01-04 Beverage Air Co Refrigerator door structure
US3818961A (en) * 1971-06-16 1974-06-25 Armstrong Cork Co Joint construction for ceiling panels
JPS51111259U (en) * 1975-03-05 1976-09-08
US4059938A (en) * 1975-09-11 1977-11-29 Itw Fastex Italia, S.P.A. Adjustable molding end cap
US4330310A (en) * 1980-08-22 1982-05-18 Whirlpool Corporation Plastic mullion rail assembly for refrigerator
US4617759A (en) * 1983-12-23 1986-10-21 Pantasote Inc. Profile of plastic material for refrigerator cabinets
US4891912A (en) * 1987-07-07 1990-01-09 Ardco, Inc. Refrigerator door assembly with multiple gasket sealing arrangement
US4947585A (en) * 1988-01-13 1990-08-14 Pease Industries, Inc. Exterior door construction
US4977705A (en) * 1988-11-07 1990-12-18 Pease Industries, Inc. Exterior door construction
US5289657A (en) * 1992-03-13 1994-03-01 The Standard Products Company Refrigerator gasket and retainer
EP0660056A1 (en) * 1993-12-22 1995-06-28 Fritz Hakemann Door panel for a thermally insulated compartment, especially a refrigerator compartment
US5588731A (en) * 1995-07-17 1996-12-31 Whirlpool Corporation Refrigerator door construction
WO2000049352A1 (en) * 1999-02-19 2000-08-24 BSH Bosch und Siemens Hausgeräte GmbH Heat-insulating wall
US9062480B2 (en) 2012-08-14 2015-06-23 Whirlpool Corporation Gasket and flange design on a refrigerator for better energy efficiency
US20180125239A1 (en) * 2016-11-08 2018-05-10 Heatcraft Refrigeration Products Llc Snap-In Edge Trim Design for End Panels
US10161669B2 (en) 2015-03-05 2018-12-25 Whirlpool Corporation Attachment arrangement for vacuum insulated door
US10222116B2 (en) 2015-12-08 2019-03-05 Whirlpool Corporation Method and apparatus for forming a vacuum insulated structure for an appliance having a pressing mechanism incorporated within an insulation delivery system
US10345031B2 (en) 2015-07-01 2019-07-09 Whirlpool Corporation Split hybrid insulation structure for an appliance
US10350817B2 (en) 2012-04-11 2019-07-16 Whirlpool Corporation Method to create vacuum insulated cabinets for refrigerators
US10365030B2 (en) 2015-03-02 2019-07-30 Whirlpool Corporation 3D vacuum panel and a folding approach to create the 3D vacuum panel from a 2D vacuum panel of non-uniform thickness
US10422573B2 (en) 2015-12-08 2019-09-24 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10422569B2 (en) 2015-12-21 2019-09-24 Whirlpool Corporation Vacuum insulated door construction
US10429125B2 (en) 2015-12-08 2019-10-01 Whirlpool Corporation Insulation structure for an appliance having a uniformly mixed multi-component insulation material, and a method for even distribution of material combinations therein
US10514198B2 (en) 2015-12-28 2019-12-24 Whirlpool Corporation Multi-layer gas barrier materials for vacuum insulated structure
US10563905B1 (en) 2018-09-13 2020-02-18 Whirlpool Corporation Ferromagnetic cover for a trim breaker of an appliance cabinet
US10598424B2 (en) 2016-12-02 2020-03-24 Whirlpool Corporation Hinge support assembly
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US10610985B2 (en) 2015-12-28 2020-04-07 Whirlpool Corporation Multilayer barrier materials with PVD or plasma coating for vacuum insulated structure
US10663217B2 (en) 2012-04-02 2020-05-26 Whirlpool Corporation Vacuum insulated structure tubular cabinet construction
US10712080B2 (en) 2016-04-15 2020-07-14 Whirlpool Corporation Vacuum insulated refrigerator cabinet
US10731915B2 (en) 2015-03-11 2020-08-04 Whirlpool Corporation Self-contained pantry box system for insertion into an appliance
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US10807298B2 (en) 2015-12-29 2020-10-20 Whirlpool Corporation Molded gas barrier parts for vacuum insulated structure
US10828844B2 (en) 2014-02-24 2020-11-10 Whirlpool Corporation Vacuum packaged 3D vacuum insulated door structure and method therefor using a tooling fixture
US10907888B2 (en) 2018-06-25 2021-02-02 Whirlpool Corporation Hybrid pigmented hot stitched color liner system
US10907891B2 (en) 2019-02-18 2021-02-02 Whirlpool Corporation Trim breaker for a structural cabinet that incorporates a structural glass contact surface
US11009284B2 (en) 2016-04-15 2021-05-18 Whirlpool Corporation Vacuum insulated refrigerator structure with three dimensional characteristics
US11052579B2 (en) 2015-12-08 2021-07-06 Whirlpool Corporation Method for preparing a densified insulation material for use in appliance insulated structure
US11175090B2 (en) 2016-12-05 2021-11-16 Whirlpool Corporation Pigmented monolayer liner for appliances and methods of making the same
US11247369B2 (en) 2015-12-30 2022-02-15 Whirlpool Corporation Method of fabricating 3D vacuum insulated refrigerator structure having core material
US11320193B2 (en) 2016-07-26 2022-05-03 Whirlpool Corporation Vacuum insulated structure trim breaker
US11391506B2 (en) 2016-08-18 2022-07-19 Whirlpool Corporation Machine compartment for a vacuum insulated structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307094A (en) * 1940-12-31 1943-01-05 Westinghouse Electric & Mfg Co Refrigerator cabinet
US2821430A (en) * 1954-12-17 1958-01-28 Grede Jean Raoul Guiding and sealing channel slideway for vehicle window panes
GB840934A (en) * 1955-10-04 1960-07-13 Gen Electric Improvements in and relating to magnetic latches suitable for refrigerators
US3130455A (en) * 1961-08-30 1964-04-28 Sabor Ets Door frame of plastics for room doors
US3226367A (en) * 1964-02-21 1965-12-28 Jarrow Products Inc Gasket assembly for refrigerator door and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307094A (en) * 1940-12-31 1943-01-05 Westinghouse Electric & Mfg Co Refrigerator cabinet
US2821430A (en) * 1954-12-17 1958-01-28 Grede Jean Raoul Guiding and sealing channel slideway for vehicle window panes
GB840934A (en) * 1955-10-04 1960-07-13 Gen Electric Improvements in and relating to magnetic latches suitable for refrigerators
US3130455A (en) * 1961-08-30 1964-04-28 Sabor Ets Door frame of plastics for room doors
US3226367A (en) * 1964-02-21 1965-12-28 Jarrow Products Inc Gasket assembly for refrigerator door and the like

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411304A (en) * 1967-05-15 1968-11-19 Barberton Plastics Products In Dock fender
US3524290A (en) * 1968-06-18 1970-08-18 Standard Products Co Receiver for spline-type gaskets
US3512304A (en) * 1968-08-01 1970-05-19 Morgan Co Insulated panel door
US3604152A (en) * 1969-10-20 1971-09-14 Ever Roll Mfg Corp Magnetic threshold construction
US3631630A (en) * 1970-05-25 1972-01-04 Beverage Air Co Refrigerator door structure
US3818961A (en) * 1971-06-16 1974-06-25 Armstrong Cork Co Joint construction for ceiling panels
JPS51111259U (en) * 1975-03-05 1976-09-08
JPS5751732Y2 (en) * 1975-03-05 1982-11-11
US4059938A (en) * 1975-09-11 1977-11-29 Itw Fastex Italia, S.P.A. Adjustable molding end cap
US4330310A (en) * 1980-08-22 1982-05-18 Whirlpool Corporation Plastic mullion rail assembly for refrigerator
US4617759A (en) * 1983-12-23 1986-10-21 Pantasote Inc. Profile of plastic material for refrigerator cabinets
US4891912A (en) * 1987-07-07 1990-01-09 Ardco, Inc. Refrigerator door assembly with multiple gasket sealing arrangement
US4947585A (en) * 1988-01-13 1990-08-14 Pease Industries, Inc. Exterior door construction
US4977705A (en) * 1988-11-07 1990-12-18 Pease Industries, Inc. Exterior door construction
US5289657A (en) * 1992-03-13 1994-03-01 The Standard Products Company Refrigerator gasket and retainer
EP0660056A1 (en) * 1993-12-22 1995-06-28 Fritz Hakemann Door panel for a thermally insulated compartment, especially a refrigerator compartment
US5588731A (en) * 1995-07-17 1996-12-31 Whirlpool Corporation Refrigerator door construction
WO2000049352A1 (en) * 1999-02-19 2000-08-24 BSH Bosch und Siemens Hausgeräte GmbH Heat-insulating wall
US6485122B2 (en) 1999-02-19 2002-11-26 BSH Bosch Siemens Hausgeräte GmbH Heat-insulating wall
US10746458B2 (en) 2012-04-02 2020-08-18 Whirlpool Corporation Method of making a folded vacuum insulated structure
US10697697B2 (en) 2012-04-02 2020-06-30 Whirlpool Corporation Vacuum insulated door structure and method for the creation thereof
US10663217B2 (en) 2012-04-02 2020-05-26 Whirlpool Corporation Vacuum insulated structure tubular cabinet construction
US10350817B2 (en) 2012-04-11 2019-07-16 Whirlpool Corporation Method to create vacuum insulated cabinets for refrigerators
US9062480B2 (en) 2012-08-14 2015-06-23 Whirlpool Corporation Gasket and flange design on a refrigerator for better energy efficiency
US10828844B2 (en) 2014-02-24 2020-11-10 Whirlpool Corporation Vacuum packaged 3D vacuum insulated door structure and method therefor using a tooling fixture
US10365030B2 (en) 2015-03-02 2019-07-30 Whirlpool Corporation 3D vacuum panel and a folding approach to create the 3D vacuum panel from a 2D vacuum panel of non-uniform thickness
US11243021B2 (en) 2015-03-05 2022-02-08 Whirlpool Corporation Attachment arrangement for vacuum insulated door
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US10092104B2 (en) * 2016-11-08 2018-10-09 Heatcraft Refrigeration Products Llc Snap-in edge trim design for end panels
US20180125239A1 (en) * 2016-11-08 2018-05-10 Heatcraft Refrigeration Products Llc Snap-In Edge Trim Design for End Panels
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