US3627988A - Electrical heating elements - Google Patents

Electrical heating elements Download PDF

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Publication number
US3627988A
US3627988A US11490A US3627988DA US3627988A US 3627988 A US3627988 A US 3627988A US 11490 A US11490 A US 11490A US 3627988D A US3627988D A US 3627988DA US 3627988 A US3627988 A US 3627988A
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US
United States
Prior art keywords
web
layer
heating element
united
supporting
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
US11490A
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English (en)
Inventor
Charles Romaniec
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.)
ELECTROTEX DEVELOPMENTS Ltd
Original Assignee
ELECTROTEX DEVELOPMENTS Ltd
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Filing date
Publication date
Priority claimed from GB28775/69A external-priority patent/GB1246343A/en
Application filed by ELECTROTEX DEVELOPMENTS Ltd filed Critical ELECTROTEX DEVELOPMENTS Ltd
Application granted granted Critical
Publication of US3627988A publication Critical patent/US3627988A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145—Carbon only, e.g. carbon black, graphite
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/011—Heaters using laterally extending conductive material as connecting means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/026—Heaters specially adapted for floor heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/036—Heaters specially adapted for garment heating
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • An electrical heating element comprising an electrically conducting carded fibrous carbon web contacted by electrodes, a supporting layer of loosely woven fabric overlying and united to one face of said web and a fitted fabric surface layer overlying and united to the other face of said web, there being a finishing layer overlying the supporting layer.
  • ELECTRICAL HEATING ELEMENTS This invention relates to electric heating elements.
  • An object of this invention is to provide a form of electrical heating element which incorporates carbon fibers as aforesaid, which operates efficiently for the generation of heat upon passage of an electric current therethrough, and which is of enduring construction not susceptible to deterioration under normal conditions of use or due to being folded, rolled or otherwise handled for storage and/or transportation purposes, as well as a method of making the same.
  • a laminar electrical heating element comprising a nonwoven fibrous carbon web having two spaced-apart electrodes in contact therewith and having a supporting or holding layer of loosely woven textile fabric united thereto at one face thereof,
  • finishing layer may, for example, be a decorative or other woven fabric, in which case the heating elements may be employed in or as part of heated clothing or the like; alternatively it may be of a foamed'plastics material, for instance where the heated element is required to be used as a heated underlay for a carpet or other floor covering. Obviously other finishing layers may be incorporated according to the intended use thereof.
  • the supporting or holding layer or layers and/or the surface layer may be united to the carbon web by needling, but the finishing layer is preferably united by bonding, e.g. by means of an adhesive. Needling has the effect of causing intermingling of the needled fibers, and accordingly should be avoided in relation to the finishing layer, so that no carbon fibers are exposed thereon in the finished heating element.
  • the invention furtherv provides a method of making a laminar electrical heating element which comprises applying two spaced-apart electrodes to a nonwoven fibrous carbon web, uniting a supporting or holding layer of loosely woven textile fabric to said carbon web at one face thereof, uniting a surface layer of felted fabric to the web at the other face thereof, and then bonding or adhering a finishing layer over the supporting or holding layer.
  • the uniting of the supporting or holding layer with the web and the uniting of the surface layer with the web is preferably effected by needling.
  • the method may, if desired, include the further step of uniting a second supporting or holding layer with the web at the said other face thereof, prior to uniting the surface layer with the web.
  • the supporting or holding layer may be an open weave scrim fabric, e.g. of cotton, and the surface layer may, for example, be of wool or a mixture of wool and other suitable fibers.
  • FIG. I is a diagrammatic perspective view illustrating a section of a carded fibrous carbon web as employed in a preferred embodiment of the heating element of the invention
  • FIG. 2 is a view similar to FIG. 1 but showing the carbon web applied to a supporting or holding layer;
  • FIG. 3 is a view comparable with FIG. 2 but showing the web with the supporting or holding layer united to one face thereof by needling, thereby illustrating one of the steps involved in the method of the invention
  • FIG. 4 is an enlarged an diagrammatic fragmentary sectional elevation illustrating a part of the united web and supporting or holding layer of FIG. 3;
  • FIG. 5 is a view similar to FIG. 4 but illustrating a modification wherein the web has a second supporting or holding layer united to the other face thereof;
  • FIG. 6 is a diagrammatic side elevation, to a reduced scale, illustrating the united web and supporting layer of FIGS. I to 4 having electrodes and a surface layer applied thereto, thereby illustrating further ones of the steps involved in the method of invention;
  • FIG. 7 is an enlarged and diagrammatic fragmentary sectional elevation, comparable with FIG. 4, but showing the structure resulting from uniting the surface layer to the carbon web and supporting layer as illustrated in FIG. 6;
  • FIG. 8 is a diagrammatic plan view, to a reduced scale, illustrating the structure of FIG. 7;
  • FIG. 9 is a diagrammatic side elevation, to a reduced scale, illustrating the application, to the structure of FIG. 8, of a finishing layer to achieve the finished heating element;
  • FIG. 10 is a diagrammatic enlarged cross-sectional side elevation of a portion of the finished heating element as obtained according to FIG. 9;
  • FIG. 11 is a view similar to FIG. 10 but illustrating another modification.
  • FIG. 1 shows, very diagrammatically, a carded nonwoven fibrous web 10.
  • This web 10 which will, of course, be floppy and will not take up the sharply defined geometrical configuration illustrated, is obtained, for example, by firstly carbonizing a bulk rayon fiber of'short staple length, in an inert atmosphere in a furnace whose temperature is increased slowly up to about 1,000 C. and thereafter converting the resulting carbon fiber bulk into a carded web by use of a conventional carding machine or so-called carding engine.
  • the carded web 10 has very little coherence or intrinsic resistance to separation of the fibers thereof and falling part, so soon as it is obtained from the carding machine it is fed onto a supporting or holding layer 11 which is a loosely woven textile fabric, such as an open weave cotton scrim, and immediately thereafter the supporting or holding layer 11 is united to the web 10 by passing them through a conventional needle loom which serves to needle the two components together, as illustrateddiagrammatically in FIGS. 3 and 4. This serves'to needle the two components together, as illustrated diagrammatically in FIGS. 3 and 4. This serves to compact the web 10 and causes the fibers thereof and of the supporting or holding layer 11 to become intermingled at a plurality of discrete locations distributed through the areas thereof as indicated at 12 in FIGS.
  • a supporting or holding layer 11 which is a loosely woven textile fabric, such as an open weave cotton scrim
  • FIG. 4 illustrated very diagrammatically in FIG. 4 to unite the web 10 and layer 11 to form a readily handleable assembly indicated by reference numeral 13 in FIG. 4.
  • Such assembly 13 can be rolled up for storage quite readily and conveniently, which would not be the case for the web 10 on its own.
  • FIG. 6 this illustrates the application, to the assembly 13 of a surface layer 14 of felted fabric, e.g. of wool or any other suitable fibrous material.
  • the carbon web/supporting or holding layer assembly 13 is drawn from a roll 15 with its supporting or holding layer 11 downwards, and the surface layer 14 is drawn from its respective roll 16 and brought into face-to-face contact with the upper or carbon web side of the assembly 13.
  • two flexible electrodes 17 are drawn ofi respective reels 18 (FIG. 6) and one thereof is fed along each longitudinal side of the assembly I3, just spaced in from the edges thereof as can be ascertained from FIG. 8, so as to contact the exposed face of the carbon web of the assembly 13 and to become entrapped between the latter and the surface layer 14.
  • Electrodes 17 are each in the form of a braided or woven tape of metallic tinsel, having a very great flexibility whilst not being susceptible to damage or fatigue as a result of flexing.
  • the assembly 13 with the electrodes 17 and the surface layer 14 superimposed thereon is progressed through a conventional needle loom, which has been illustrated very diagrammatically at 1-9, whereat the surface layer 14 is united to the assembly 13, as indicated diagrammatically at 20 in FIG. 7, in the same way as the supporting or holding layer 11 was united with the carbon web 12 as above described, to form the composite laminated carbon web/supporting or holding layer/surface layer/electrode structure 21.
  • the needling is, of course, effected through the electrodes 17 to unite these with the rest of the structure.
  • This laminated structure 21 can, if so desired, be rolled up.
  • FIG. 9 illustrates the application to the structure 21 of a finishing layer 22.
  • the structure 21 is drawn off a respective roll 23 and is progressed over a table 24 with its exposed supporting or holding layer 11 upwards and the surface layer 14 downwards.
  • a coherent adhesive film 26 is drawn from its respective reel 26 and fed to the upper surface of the structure 21 so as to overlie the scrim supporting or holding layer thereof against which it is pressed by a guide roller 27 whereupon the finishing layer 22, which may be for example, a decorative woven fabric, drawn from a respective reel 28 is applied over the film, 25, against which it is pressed by a respective guide roller 29.
  • the resulting assemblage is passed through a steam chamber illustrated diagrammatically at 30 wherein it is subjected to steam which activates the adhesive film 25 causing the later to fuse and bond the finishing layer 22 to supporting or holding layer 11 and the carbon web 10, a pressure roller 31 disposed adjacent the exit from the steam chamber 30 serving to press all of the components of the resulting heating element 32 to ensure intimate bonding of the finishing layer 22.
  • FIG. serves diagrammatically to illustrate the form of the finished laminated electrical heating element structure 32 produced by the method as described, the various layers thereof having been shown exaggeratedly simply so that the nature thereof can readily be understood. It will be appreciated that the resultant continuous length of the structure 32 will be severed at appropriate locations to form individual heating elements.
  • the carbon web 10 from the carding machine can, if desired, have not only the supporting or holding layer 11 applied thereto, but can have second similar supporting or holding layer 14 overlaid thereover, the two layers 11 and 40 being simultaneously united to the carbon web 10 by needling, prior to the uniting therewith of the surface layer 14, as illustrated in FIG. 5.
  • FIG. 11 illustrates a modification wherein a formed plastics or like layer 41 is bonded to the carbon web 10 at the side thereof opposite to the surface layer 14 so as to form a construction of heating element which is particularly suitable for use as an underlay for carpets and like floor coverings.
  • the structure 23 passing over the table 24, instead of having the adhesive film 25 and finishing layer 22 applied thereto, is coated with an appropriate fluid plastics material 42 from a supply receptacle 43 and passes beneath a a doctor blade 44 whichserves to ensure that the coating is even over the entire area of the structure 23.
  • the component 30 through which the coated structure 23 then passes will, instead of being a steam chamber, be a curing chamber wherein the plastics coating is caused to expand and at least partially set to form the layer 41.
  • the foamed plastics layer 41 may be separated formed and caused to adhere to the structure 21 by means of an appropriate adhesive, for example as already described in relation to the finishing layer 22.
  • the heating element as described can be employed in the manufacture of heated clothing or panels, or electrically heated underlays for floor heating, for example in domestic dwellinghouses, caravans and other locations as has already been mentioned.
  • a low voltage for example of 12 volts or volts, is preferably employed, and in practice a loading of the order of 15 watts per square foot will provide, in an underlay measuring approximately 12 feet by 12 feet will provide adequate room heating for a room of slightly larger floor area, being slightly in excess of 2 kilowatts.
  • the described method of making the heating element of the invention wherein the needling of the various layers to the carbon fiber web to unite them is effected prior to the bonding in place of the finishing layer 22 or 41 has the advantage that no carbon fibers are present at the exposed surface of the finishing layer 22 or 41 which would be the case if such finishing layer were united to the rest of the components of the element by needling also.
  • the heating elements of the invention may incorporate nonwoven fibrous carbon webs produced otherwise than in the manner specifically described, for example by carbonishing a previously felted rayon fiber web.
  • the finishing layer may be a knitted fabric or a nonwoven fabric instead of the described woven fabric or plastics layer.
  • a laminar electrical heating element comprising: a nonwoven fibrous carbon web, a pair of spaced-apart electrodes in contact with the web, a supporting layer of loosely woven textile fabric united with the web at discrete needled locations at one face thereof, a surface layer of felted fabric united with the web at the other face thereof, and a finishing layer overlying the supporting layer and united therewith and with the web.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Surface Heating Bodies (AREA)
  • Woven Fabrics (AREA)
  • Central Heating Systems (AREA)
  • Resistance Heating (AREA)
US11490A 1969-04-01 1970-02-16 Electrical heating elements Expired - Lifetime US3627988A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1688169 1969-04-01
GB28775/69A GB1246343A (en) 1969-04-01 1969-04-01 Electrical heating element

Publications (1)

Publication Number Publication Date
US3627988A true US3627988A (en) 1971-12-14

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US11490A Expired - Lifetime US3627988A (en) 1969-04-01 1970-02-16 Electrical heating elements

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US (1) US3627988A (de)
JP (1) JPS5013966B1 (de)
AT (1) AT298624B (de)
BE (1) BE748195A (de)
CA (1) CA920634A (de)
CH (1) CH512867A (de)
DE (1) DE2014940A1 (de)
FR (1) FR2049687A5 (de)
NL (1) NL7004662A (de)
SE (1) SE366192B (de)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973066A (en) * 1975-01-16 1976-08-03 The Fiberwoven Corporation Electric blanket shell and method of production
US4534886A (en) * 1981-01-15 1985-08-13 International Paper Company Non-woven heating element
US4599095A (en) * 1984-10-22 1986-07-08 Honeywell Inc. Thin bed sorption/desorption apparatus and method for making the same
US4631976A (en) * 1984-09-27 1986-12-30 Toyoda Gosei Co., Ltd. Steering wheel
US4942078A (en) * 1988-09-30 1990-07-17 Rockwell International Corporation Electrically heated structural composite and method of its manufacture
US5908573A (en) * 1997-12-30 1999-06-01 Bask Technologies Llc Electric floor heating system
US6057530A (en) * 1996-08-29 2000-05-02 Thermosoft International Corporation Fabric heating element and method of manufacture
FR2800445A1 (fr) * 1999-11-03 2001-05-04 Nortene Sa Structure chauffante pour realiser un dispositif de chauffage par le sol
US6242713B1 (en) * 1998-10-31 2001-06-05 Solco Biomedical Co., Ltd. Plane heating element without electromagnetic waves and a manufacturing method thereof
US6303905B1 (en) 2000-08-25 2001-10-16 Bask Technologies Llc Heating element construction for floor warming systems
US20040029471A1 (en) * 2000-11-21 2004-02-12 Birgit Severich Method for graphitising a carbonised fabric
US20040055699A1 (en) * 2002-06-28 2004-03-25 Smith Faye C. Method for accelerated bondline curing
US20060272796A1 (en) * 2001-04-04 2006-12-07 Asmussen Erick R Flexible graphite flooring heat spreader
US20060280948A1 (en) * 2005-05-26 2006-12-14 Wylie Moreshead Thin film energy fabric
US20080109941A1 (en) * 2005-05-26 2008-05-15 Energy Integration Technologies, Inc. Thin film energy fabric integration, control and method of making
US20080184638A1 (en) * 2007-02-01 2008-08-07 Fu Xiaole Infrared electrothermal raised floor piece and floor comprising the same
US20090078690A1 (en) * 2004-11-16 2009-03-26 Mi-Ae Lee Fiber reinforced heating unit and mattress with thereof
GB2459341A (en) * 2008-04-25 2009-10-28 Wilkie J & D Ltd Sheet material for use in electrical heating apparatus
US20110130813A1 (en) * 2005-05-26 2011-06-02 Kinaptic, LLC Thin film energy fabric for self-regulating heated wound dressings
US20110127248A1 (en) * 2005-05-26 2011-06-02 Kinaptic,LLC Thin film energy fabric for self-regulating heat generation layer
US20110128686A1 (en) * 2005-05-26 2011-06-02 Kinaptic, LLC Thin film energy fabric with energy transmission/reception layer
US20110128726A1 (en) * 2005-05-26 2011-06-02 Kinaptic, LLC Thin film energy fabric with light generation layer
CN103344001A (zh) * 2013-07-06 2013-10-09 王东 碳纳米移动地暖
WO2014025495A1 (en) * 2012-08-07 2014-02-13 Tempronics, Inc. Medical, topper, pet wireless, and automated manufacturing of distributed thermoelectric heating and cooling
US20140069540A1 (en) * 2012-09-11 2014-03-13 Jean Renee Chesnais Wrappable sleeve with heating elements and methods of use and construction thereof
EP2744525A1 (de) * 2011-08-15 2014-06-25 Porex Corporation Leitender verbunddocht sowie verfahren zu seiner herstellung und verwendung
CN104244475A (zh) * 2013-06-09 2014-12-24 浙江昱辉碳纤维材料有限公司 碳纤维加热垫加工方法
CN104305584A (zh) * 2014-11-19 2015-01-28 缪朝辉 碳纤维加热服
US8969703B2 (en) 2010-09-13 2015-03-03 Tempronics, Inc. Distributed thermoelectric string and insulating panel
CN105155813A (zh) * 2015-09-10 2015-12-16 浙江康辉木业有限公司 一种新型纳米碳晶电条供暖地板及其制备方法
US9596944B2 (en) 2011-07-06 2017-03-21 Tempronics, Inc. Integration of distributed thermoelectric heating and cooling
US9676310B2 (en) 2012-09-25 2017-06-13 Faurecia Automotive Seating, Llc Vehicle seat with thermal device
US10228165B2 (en) 2013-11-04 2019-03-12 Tempronics, Inc. Thermoelectric string, panel, and covers for function and durability

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
BE794422A (fr) * 1972-01-24 1973-07-23 Rhone Poulenc Textile Feutres electro-conducteurs de bonnes proprietes mecaniques
JPS5792777A (en) * 1980-11-29 1982-06-09 Sekisui Chemical Co Ltd Method of producing panel heater
JPS5925155U (ja) * 1982-08-07 1984-02-16 三菱電機株式会社 多極回路しや断器
LU84838A1 (fr) * 1983-05-31 1985-03-21 Belge Isolants Procede de fabrication de resistances electriques et d'appareils chauffants
JPS59195647U (ja) * 1983-06-15 1984-12-26 富士電機株式会社 電磁接触器
NL8400410A (nl) * 1984-02-09 1985-09-02 Inventum Koninklijke Fab Werkwijze en inrichting voor het in een bepaald patroon tussen respectievelijk materiaallagen en materiaalbanen aanbrengen van een draadvormig element, in het bijzonder voor toepassing bij de vervaardiging van electrisch verwarmde voorwerpen, zoals dekens en kussens, waarbij het draadvormig element een verwarmingskabel is.
DE4447407C2 (de) * 1994-12-24 2001-12-13 Debolon Dessauer Bodenbelaege Flexibles Flächenheizelement und Verfahren zur Herstellung eines flexiblen Flächenheizelementes
DE20314061U1 (de) * 2003-09-10 2003-11-20 Haug, Rainer, 70191 Stuttgart Heizplatte zum elektrischen Heizen von Gebäuderäumen
DE102007003549A1 (de) * 2007-01-24 2008-07-31 Valeo Klimasysteme Gmbh Luftstromerwärmungsvorrichtung mit Heizvlies

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US2708235A (en) * 1954-07-26 1955-05-10 Kaplan Julius Electrically heated comforter
US3107152A (en) * 1960-09-12 1963-10-15 Union Carbide Corp Fibrous graphite
US3146340A (en) * 1961-08-21 1964-08-25 Baird Atomic Inc Heating devices
US3205342A (en) * 1961-09-22 1965-09-07 Fmc Corp Electrically heated fabric structure
US3218436A (en) * 1963-03-12 1965-11-16 Gen Motors Corp Electrical aircraft heater
US3255337A (en) * 1963-09-23 1966-06-07 Arnold F Willat Electrical heating pad for floors
US3367851A (en) * 1964-04-09 1968-02-06 Minnesota Mining & Mfg Non-woven conductive paper mat
US3385959A (en) * 1964-05-29 1968-05-28 Ici Ltd Flexible heating elements
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Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973066A (en) * 1975-01-16 1976-08-03 The Fiberwoven Corporation Electric blanket shell and method of production
US4534886A (en) * 1981-01-15 1985-08-13 International Paper Company Non-woven heating element
US4631976A (en) * 1984-09-27 1986-12-30 Toyoda Gosei Co., Ltd. Steering wheel
US4599095A (en) * 1984-10-22 1986-07-08 Honeywell Inc. Thin bed sorption/desorption apparatus and method for making the same
US4942078A (en) * 1988-09-30 1990-07-17 Rockwell International Corporation Electrically heated structural composite and method of its manufacture
US6057530A (en) * 1996-08-29 2000-05-02 Thermosoft International Corporation Fabric heating element and method of manufacture
US5908573A (en) * 1997-12-30 1999-06-01 Bask Technologies Llc Electric floor heating system
US6242713B1 (en) * 1998-10-31 2001-06-05 Solco Biomedical Co., Ltd. Plane heating element without electromagnetic waves and a manufacturing method thereof
FR2800445A1 (fr) * 1999-11-03 2001-05-04 Nortene Sa Structure chauffante pour realiser un dispositif de chauffage par le sol
US6303905B1 (en) 2000-08-25 2001-10-16 Bask Technologies Llc Heating element construction for floor warming systems
US20040029471A1 (en) * 2000-11-21 2004-02-12 Birgit Severich Method for graphitising a carbonised fabric
US20060272796A1 (en) * 2001-04-04 2006-12-07 Asmussen Erick R Flexible graphite flooring heat spreader
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AT298624B (de) 1972-05-10
CA920634A (en) 1973-02-06
SE366192B (de) 1974-04-08
NL7004662A (de) 1970-10-05
BE748195A (fr) 1970-08-31
DE2014940A1 (de) 1970-11-26
JPS5013966B1 (de) 1975-05-23
FR2049687A5 (de) 1971-03-26
CH512867A (de) 1971-09-15

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