DE3064102D1 - Electrical devices comprising ptc conductive polymer elements - Google Patents

Electrical devices comprising ptc conductive polymer elements

Info

Publication number
DE3064102D1
DE3064102D1 DE8080301664T DE3064102T DE3064102D1 DE 3064102 D1 DE3064102 D1 DE 3064102D1 DE 8080301664 T DE8080301664 T DE 8080301664T DE 3064102 T DE3064102 T DE 3064102T DE 3064102 D1 DE3064102 D1 DE 3064102D1
Authority
DE
Germany
Prior art keywords
conductive polymer
electrical devices
polymer elements
ptc conductive
ptc
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
Application number
DE8080301664T
Other languages
English (en)
Inventor
Jack Mclean Walker
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.)
Raychem Corp
Original Assignee
Raychem Corp
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 Raychem Corp filed Critical Raychem Corp
Application granted granted Critical
Publication of DE3064102D1 publication Critical patent/DE3064102D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/82—Forcing wires, nets or the like partially or completely into the surface of an article, e.g. by cutting and pressing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/021—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient formed as one or more layers or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • 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—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater 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—Heater 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
    • H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B29L2031/3061—Number plates

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Dispersion Chemistry (AREA)
  • Thermistors And Varistors (AREA)
  • Laminated Bodies (AREA)
  • Resistance Heating (AREA)
  • Non-Insulated Conductors (AREA)
  • Surface Heating Bodies (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Electrotherapy Devices (AREA)
DE8080301664T 1979-05-21 1980-05-20 Electrical devices comprising ptc conductive polymer elements Expired DE3064102D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/041,071 US4272471A (en) 1979-05-21 1979-05-21 Method for forming laminates comprising an electrode and a conductive polymer layer

Publications (1)

Publication Number Publication Date
DE3064102D1 true DE3064102D1 (en) 1983-08-18

Family

ID=21914567

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8080301665T Expired DE3062810D1 (en) 1979-05-21 1980-05-20 Laminates comprising an electrode and a conductive polymer, and process and apparatus for their production
DE8080301664T Expired DE3064102D1 (en) 1979-05-21 1980-05-20 Electrical devices comprising ptc conductive polymer elements

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8080301665T Expired DE3062810D1 (en) 1979-05-21 1980-05-20 Laminates comprising an electrode and a conductive polymer, and process and apparatus for their production

Country Status (9)

Country Link
US (1) US4272471A (de)
EP (2) EP0020081B1 (de)
JP (2) JPS55159587A (de)
KR (2) KR830001551B1 (de)
AU (2) AU539067B2 (de)
CA (2) CA1152552A (de)
DE (2) DE3062810D1 (de)
ES (3) ES250815Y (de)
IL (2) IL60132A (de)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445026A (en) * 1979-05-21 1984-04-24 Raychem Corporation Electrical devices comprising PTC conductive polymer elements
US4327351A (en) * 1979-05-21 1982-04-27 Raychem Corporation Laminates comprising an electrode and a conductive polymer layer
US4413301A (en) 1980-04-21 1983-11-01 Raychem Corporation Circuit protection devices comprising PTC element
US4317027A (en) * 1980-04-21 1982-02-23 Raychem Corporation Circuit protection devices
US4330704A (en) * 1980-08-08 1982-05-18 Raychem Corporation Electrical devices comprising conductive polymers
JPS57143597U (de) * 1981-03-03 1982-09-09
US4521359A (en) * 1981-12-04 1985-06-04 Exxon Research & Engineering Co. Method of coextruding plastics to form a composite sheet
US4574188A (en) * 1982-04-16 1986-03-04 Raychem Corporation Elongate electrical assemblies
US4659913A (en) * 1982-04-16 1987-04-21 Raychem Corporation Elongate electrical assemblies
US4582983A (en) * 1982-04-16 1986-04-15 Raychem Corporation Elongate electrical assemblies
US4791276A (en) * 1982-04-16 1988-12-13 Raychem Corporation Elongate electrical assemblies
KR890003052B1 (ko) * 1983-03-16 1989-08-19 칫소 엔지니어링 가부시끼 가이샤 띠형 전기발열장치
US4517449A (en) * 1983-05-11 1985-05-14 Raychem Corporation Laminar electrical heaters
US4548662A (en) * 1983-05-11 1985-10-22 Raychem Corporation Method of providing a protective covering over a substrate
JPS59175294U (ja) * 1983-05-12 1984-11-22 株式会社フジクラ 面状発熱体
JPS6071095U (ja) * 1983-10-20 1985-05-20 株式会社フジクラ 面状発熱体
JPS6071096U (ja) * 1983-10-20 1985-05-20 株式会社フジクラ 面状発熱体
JPS6076872U (ja) * 1983-11-01 1985-05-29 ミノルタ株式会社 電池の過放電過熱防止装置
US4845343A (en) * 1983-11-17 1989-07-04 Raychem Corporation Electrical devices comprising fabrics
US4700054A (en) * 1983-11-17 1987-10-13 Raychem Corporation Electrical devices comprising fabrics
JPS60258903A (ja) * 1984-06-05 1985-12-20 株式会社村田製作所 電子部品
JPS618816A (ja) * 1984-06-25 1986-01-16 株式会社　信明産業 加圧導電スイツチの製造方法と加圧導電スイツチ
EP0187320B1 (de) * 1984-12-18 1991-08-28 Matsushita Electric Industrial Co., Ltd. Selbstregelnder Heizartikel mit Elektroden welche direkt mit einer PTC-Schicht verbunden sind
EP0388990A3 (de) 1986-02-20 1993-03-31 RAYCHEM CORPORATION (a Delaware corporation) Einen ionentauschenden Stoff verwendende Verfahren und Gegenstände
JP2691342B2 (ja) * 1987-08-13 1997-12-17 ティーディーケイ株式会社 導電性ポリマーｐｔｃ抵抗素子及びその製造方法
US4907340A (en) * 1987-09-30 1990-03-13 Raychem Corporation Electrical device comprising conductive polymers
US4924074A (en) * 1987-09-30 1990-05-08 Raychem Corporation Electrical device comprising conductive polymers
DE3906074A1 (de) * 1989-02-27 1990-08-30 Schmid Walter Verfahren zur herstellung einer koerperelektrode
DE3906071A1 (de) * 1989-02-27 1990-08-30 Schmid Walter Koerperelektrode
AU637370B2 (en) * 1989-05-18 1993-05-27 Fujikura Ltd. Ptc thermistor and manufacturing method for the same
US5098277A (en) * 1990-05-14 1992-03-24 Thiokol Corporation Insulation wrapping strip with variable configuration
US5174845A (en) * 1990-05-14 1992-12-29 Thiokol Corporation Insulation wrapping strip with variable configuration
US5436609A (en) * 1990-09-28 1995-07-25 Raychem Corporation Electrical device
US5089801A (en) * 1990-09-28 1992-02-18 Raychem Corporation Self-regulating ptc devices having shaped laminar conductive terminals
GB9113888D0 (en) * 1991-06-27 1991-08-14 Raychem Sa Nv Circuit protection devices
JPH0643567U (ja) * 1991-06-28 1994-06-10 株式会社ニッショー 採便容器
US5303115A (en) * 1992-01-27 1994-04-12 Raychem Corporation PTC circuit protection device comprising mechanical stress riser
US5852397A (en) * 1992-07-09 1998-12-22 Raychem Corporation Electrical devices
US5451919A (en) * 1993-06-29 1995-09-19 Raychem Corporation Electrical device comprising a conductive polymer composition
CA2190361A1 (en) 1994-05-16 1995-11-23 Michael Zhang Electrical devices comprising a ptc resistive element
JPH11505070A (ja) * 1995-05-10 1999-05-11 リッテルフューズ，インコーポレイティド Ｐｔｃ回路保護装置およびその製造方法
US5663702A (en) * 1995-06-07 1997-09-02 Littelfuse, Inc. PTC electrical device having fuse link in series and metallized ceramic electrodes
EP0845148B1 (de) * 1995-08-15 2000-01-19 Bourns Multifuse (Hong Kong), Ltd. Oberflächenmontierte leitfähige bauelemente und verfahren zur herstellung derselben
TW309619B (de) * 1995-08-15 1997-07-01 Mourns Multifuse Hong Kong Ltd
JP3194466B2 (ja) * 1996-03-21 2001-07-30 矢崎総業株式会社 電気接続箱に対するｐｔｃ素子の装着構造
US5814264A (en) * 1996-04-12 1998-09-29 Littelfuse, Inc. Continuous manufacturing methods for positive temperature coefficient materials
US6023403A (en) * 1996-05-03 2000-02-08 Littlefuse, Inc. Surface mountable electrical device comprising a PTC and fusible element
US5841111A (en) * 1996-12-19 1998-11-24 Eaton Corporation Low resistance electrical interface for current limiting polymers by plasma processing
US5920251A (en) * 1997-03-12 1999-07-06 Eaton Corporation Reusable fuse using current limiting polymer
US6020808A (en) 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6282072B1 (en) 1998-02-24 2001-08-28 Littelfuse, Inc. Electrical devices having a polymer PTC array
US6236302B1 (en) 1998-03-05 2001-05-22 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6172591B1 (en) 1998-03-05 2001-01-09 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6242997B1 (en) 1998-03-05 2001-06-05 Bourns, Inc. Conductive polymer device and method of manufacturing same
EP1123549A1 (de) 1998-09-25 2001-08-16 Bourns, Inc. Zweistufenverfahren zur herstellung von ptc-polymermaterialen
US6582647B1 (en) 1998-10-01 2003-06-24 Littelfuse, Inc. Method for heat treating PTC devices
US6854176B2 (en) * 1999-09-14 2005-02-15 Tyco Electronics Corporation Process for manufacturing a composite polymeric circuit protection device
US6640420B1 (en) * 1999-09-14 2003-11-04 Tyco Electronics Corporation Process for manufacturing a composite polymeric circuit protection device
US6429533B1 (en) 1999-11-23 2002-08-06 Bourns Inc. Conductive polymer device and method of manufacturing same
US6628498B2 (en) 2000-08-28 2003-09-30 Steven J. Whitney Integrated electrostatic discharge and overcurrent device
US6411191B1 (en) 2000-10-24 2002-06-25 Eaton Corporation Current-limiting device employing a non-uniform pressure distribution between one or more electrodes and a current-limiting material
JP4839507B2 (ja) * 2000-11-15 2011-12-21 Ｎｏｋ株式会社 Ｐｔｃインク組成物の製造法
KR100454732B1 (ko) * 2001-08-25 2004-11-05 엘지전선 주식회사 전도성 중합체 조성물. 이 조성물의 특성을 조절하는 방법및 이 조성물을 이용한 전기장치
CN100350606C (zh) * 2002-04-08 2007-11-21 力特保险丝有限公司 使用压变材料的装置
US7132922B2 (en) * 2002-04-08 2006-11-07 Littelfuse, Inc. Direct application voltage variable material, components thereof and devices employing same
US7183891B2 (en) * 2002-04-08 2007-02-27 Littelfuse, Inc. Direct application voltage variable material, devices employing same and methods of manufacturing such devices
TWI286412B (en) * 2002-07-25 2007-09-01 Polytronics Technology Corp Manufacturing method of over-current protection devices
US7789651B2 (en) * 2006-12-22 2010-09-07 N. P. Johnson Family Limited Partnership Presnel lens angular segment manufacturing apparatus and method
US7789650B2 (en) * 2006-12-22 2010-09-07 N.P. Johnson Family Limited Partnership Fresnel lens angular segment manufacturing apparatus and method
US7789652B2 (en) * 2006-12-22 2010-09-07 N.P. Johnson Family Limited Partnership Fresnel lens angular segment manufacturing apparatus and method
JP5433931B2 (ja) 2007-05-11 2014-03-05 Ｎｏｋ株式会社 Ｐｔｃインク組成物の製造方法及びｐｔｃインク組成物
US20090027821A1 (en) * 2007-07-26 2009-01-29 Littelfuse, Inc. Integrated thermistor and metallic element device and method
US8900500B2 (en) 2011-01-08 2014-12-02 Black Night Enterprises, Inc. Facet deformation minimizing fresnel lens die roller and manufacturing method
CN103594215B (zh) * 2013-11-13 2016-08-17 兴勤（常州）电子有限公司 一种复合型高分子热敏电阻
CN104681221A (zh) * 2015-02-25 2015-06-03 上海长园维安电子线路保护有限公司 一种高耐电压等级的pptc热敏电阻器及其制造方法
WO2020092213A1 (en) 2018-10-29 2020-05-07 PolyJoule, Inc. High yield storage materials

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB867782A (en) * 1957-03-30 1961-05-10 Boulton & Paul Ltd Improvements in or relating to laminated material
US3082292A (en) * 1957-09-30 1963-03-19 Gore & Ass Multiconductor wiring strip
NL279126A (de) * 1961-05-31 1900-01-01
US3311862A (en) * 1964-09-09 1967-03-28 Herbert L Rees Bonded low-temperature laminated resistance heater
US3351882A (en) * 1964-10-09 1967-11-07 Polyelectric Corp Plastic resistance elements and methods for making same
GB1167551A (en) 1965-12-01 1969-10-15 Texas Instruments Inc Heaters and Methods of Making Same
US3532570A (en) * 1966-06-08 1970-10-06 Du Pont Dimensionally stable electrical circuit laminates
FR1509654A (fr) * 1967-01-30 1968-01-12 Matsushita Electric Ind Co Ltd Cafetière électrique automatique
US3612744A (en) * 1969-02-27 1971-10-12 Hughes Aircraft Co Flexible flat conductor cable of variable electrical characteristics
CA1008623A (en) * 1972-02-11 1977-04-19 Gould Inc. Process and apparatus for manufacture of an electrode
US4017715A (en) * 1975-08-04 1977-04-12 Raychem Corporation Temperature overshoot heater
US4177376A (en) * 1974-09-27 1979-12-04 Raychem Corporation Layered self-regulating heating article
US4177446A (en) * 1975-12-08 1979-12-04 Raychem Corporation Heating elements comprising conductive polymers capable of dimensional change
ES454025A1 (es) * 1975-12-08 1977-11-16 Raychem Corp Perfeccionamientos en elementos de calentamiento.
DE2816076A1 (de) * 1978-04-13 1979-10-25 Siemens Ag Heizer mit ferroelektrischem keramik-heizelement

Also Published As

Publication number Publication date
US4272471A (en) 1981-06-09
AU5854680A (en) 1980-11-27
EP0022611B1 (de) 1983-07-13
ES250815Y (es) 1981-07-16
KR830001551B1 (ko) 1983-08-10
JPH0216002B2 (de) 1990-04-13
AU539067B2 (en) 1984-09-13
EP0022611A1 (de) 1981-01-21
ES250816U (es) 1980-11-16
IL60132A (en) 1986-04-29
ES250816Y (es) 1981-05-16
KR830003118A (ko) 1983-05-31
AU537349B2 (en) 1984-06-21
EP0020081B1 (de) 1983-04-20
DE3062810D1 (en) 1983-05-26
JPS55159507A (en) 1980-12-11
JPH0241161B2 (de) 1990-09-14
KR830003119A (ko) 1983-05-31
EP0020081A1 (de) 1980-12-10
ES491625A0 (es) 1981-02-16
KR830001694B1 (ko) 1983-08-29
ES250815U (es) 1981-02-01
AU5854780A (en) 1980-11-27
IL60131A (en) 1985-02-28
CA1152552A (en) 1983-08-23
CA1152551A (en) 1983-08-23
ES8102910A1 (es) 1981-02-16
JPS55159587A (en) 1980-12-11

Similar Documents

Publication Publication Date Title
DE3064102D1 (en) Electrical devices comprising ptc conductive polymer elements
GB2080834B (en) Electrical devices comprising conductive polymers
GB2042284B (en) Electrical terminal unit
GB2014784B (en) Electrical device containing ptc elements
GB2046284B (en) Electrically conductive silicone elastomers
DE3377308D1 (en) Electrically conductive polymer composition
DE3065459D1 (en) Electric terminal
AU534374B2 (en) Electrically conductive polymer composition
YU266680A (en) Electric conductor
DE3069323D1 (en) Electrical contact
JPS5638779A (en) Electric terminal
GB2044557B (en) Electrical contact
JPS5710648A (en) Ptc electroconductive polymer compositions and electric device containing them
JPS53102356A (en) Electric conductive polymer composition
IL58837A0 (en) Electrical devices comprising conductive polymer ptc elements
IL62897A (en) Conductive polymer composition and electrical devices containing them
AU515034B2 (en) Electrical devices comprising conductive polymer
DE3065002D1 (en) Electrical terminal
GB2056182B (en) Electrical resistance
GB2059307B (en) Terminating electrical conductors in contact members
DE3478163D1 (en) Electrical devices comprising conductive polymers exhibiting ptc characteristics
GB2059191B (en) Electrically conductive terminal
DE3067991D1 (en) Electrical resistance element for variable resistance devices
GB2075992B (en) Ptc conductive polymers and devices comprising them
JPS5595203A (en) Electric device having conductive polymer

Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee