[go: up one dir, main page]

FR2443125A1 - PTC DEVICES INCLUDING BARRIERS AGAINST OXYGEN - Google Patents

PTC DEVICES INCLUDING BARRIERS AGAINST OXYGEN

Info

Publication number
FR2443125A1
FR2443125A1 FR7929556A FR7929556A FR2443125A1 FR 2443125 A1 FR2443125 A1 FR 2443125A1 FR 7929556 A FR7929556 A FR 7929556A FR 7929556 A FR7929556 A FR 7929556A FR 2443125 A1 FR2443125 A1 FR 2443125A1
Authority
FR
France
Prior art keywords
ptc
degrees
devices including
against oxygen
ptc devices
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.)
Granted
Application number
FR7929556A
Other languages
French (fr)
Other versions
FR2443125B1 (en
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26675299&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2443125(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US06/006,188 external-priority patent/US4242573A/en
Application filed by Raychem Corp filed Critical Raychem Corp
Publication of FR2443125A1 publication Critical patent/FR2443125A1/en
Application granted granted Critical
Publication of FR2443125B1 publication Critical patent/FR2443125B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Resistance Heating (AREA)

Abstract

L'invention concerne un dispositif électrique qui comprend : 1 degrés un élément PTC qui est composé d'une composition présentant un comportement PTC avec une température de commutation T, et qui comprend un polymère macromoléculaire et des particules conductrices dispersées dans ce polymère; et 2 degrés au moins deux électrodes qui peuvent être connectées à une source de courant électrique et qui, quand elles sont ainsi connectées, font passer un courant à travers l'élément PTC; caractérisé en ce que le dispositif comprend aussi : 3 degrés une barrière contre l'oxygène qui, quand le dispositif se trouve dans l'air à température et pression normales, limite l'accès de l'air à l'élément PTC de manière que la vitesse à laquelle PTC absorbe l'oxygène soit inférieure à 10**-6 cm**3/s/g.Disclosed is an electrical device which comprises: 1 degrees a PTC element which is composed of a composition exhibiting PTC behavior with a switching temperature T, and which comprises a macromolecular polymer and conductive particles dispersed in this polymer; and 2 degrees at least two electrodes which can be connected to a source of electric current and which, when so connected, pass a current through the PTC element; characterized in that the device also comprises: 3 degrees an oxygen barrier which, when the device is in air at normal temperature and pressure, limits the access of air to the PTC element so that the rate at which PTC absorbs oxygen is less than 10 ** - 6 cm ** 3 / s / g.

FR7929556A 1978-12-01 1979-11-30 PTC DEVICES INCLUDING BARRIERS AGAINST OXYGEN Granted FR2443125A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US96534578A 1978-12-01 1978-12-01
US06/006,188 US4242573A (en) 1979-01-24 1979-01-24 Water immersible heater

Publications (2)

Publication Number Publication Date
FR2443125A1 true FR2443125A1 (en) 1980-06-27
FR2443125B1 FR2443125B1 (en) 1985-02-08

Family

ID=26675299

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929556A Granted FR2443125A1 (en) 1978-12-01 1979-11-30 PTC DEVICES INCLUDING BARRIERS AGAINST OXYGEN

Country Status (8)

Country Link
DE (1) DE2948349A1 (en)
FR (1) FR2443125A1 (en)
GB (1) GB2038549B (en)
HK (1) HK83289A (en)
IL (1) IL58837A (en)
IT (1) IT1126464B (en)
NL (1) NL7908690A (en)
SE (1) SE436528B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238812A (en) * 1978-12-01 1980-12-09 Raychem Corporation Circuit protection devices comprising PTC elements
US4255698A (en) * 1979-01-26 1981-03-10 Raychem Corporation Protection of batteries
US4398084A (en) * 1981-06-15 1983-08-09 Raychem Corporation End seal for strip heaters
GB2147478A (en) * 1983-09-27 1985-05-09 Isopad Ltd Flexible heating tapes
JPS62209803A (en) * 1986-03-10 1987-09-16 日本メクトロン株式会社 Circuit device
GB2196818B (en) * 1986-10-13 1990-03-28 Herush Electrical Electrical heaters
GB2196215B (en) * 1986-10-15 1991-01-09 Jong Tsuen Lin Structure of electric heater
GB9113888D0 (en) * 1991-06-27 1991-08-14 Raychem Sa Nv Circuit protection devices
WO1999030330A1 (en) * 1997-12-08 1999-06-17 Acome Societe Cooperative De Travailleurs Electric wire with thin insulation based on polybutyleneterephthalate
DE19842006A1 (en) * 1998-09-15 2000-03-16 Moeller Gmbh Contact structure, for PTC type conductive polymers used in electrical switching and protection devices, comprises a polymer sheet sandwiched between highly flexible metal contact electrodes
DE19842008A1 (en) * 1998-09-15 2000-03-16 Moeller Gmbh Contact structure, for PTC type conductive polymers used in electrical switching and protection devices, comprises coated copper contact electrodes heat treated to achieve low elasticity modulus
US9136195B2 (en) 2009-07-17 2015-09-15 Tyco Electronics Corporation Oxygen barrier compositions and related methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859504A (en) * 1972-04-06 1975-01-07 Kureha Chemical Ind Co Ltd Moisture resistant panel heater
US3914363A (en) * 1972-09-08 1975-10-21 Raychem Corp Method of forming self-limiting conductive extrudates
FR2271640A1 (en) * 1974-05-16 1975-12-12 Union Carbide Corp
US4074222A (en) * 1974-03-29 1978-02-14 Shin Kiyokawa Planar heating element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE660971C (en) * 1936-11-20 1938-06-08 Patra Patent Treuhand Resistance body with a positive temperature coefficient of resistance
US3435401A (en) * 1966-10-05 1969-03-25 Texas Instruments Inc Insulated electrical conductors
US3824328A (en) * 1972-10-24 1974-07-16 Texas Instruments Inc Encapsulated ptc heater packages
GB1595198A (en) * 1976-10-15 1981-08-12 Raychem Corp Ptc compositions and devices comprising them

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859504A (en) * 1972-04-06 1975-01-07 Kureha Chemical Ind Co Ltd Moisture resistant panel heater
US3914363A (en) * 1972-09-08 1975-10-21 Raychem Corp Method of forming self-limiting conductive extrudates
US4074222A (en) * 1974-03-29 1978-02-14 Shin Kiyokawa Planar heating element
FR2271640A1 (en) * 1974-05-16 1975-12-12 Union Carbide Corp

Also Published As

Publication number Publication date
DE2948349A1 (en) 1980-06-12
GB2038549B (en) 1983-05-11
IL58837A (en) 1984-10-31
FR2443125B1 (en) 1985-02-08
IL58837A0 (en) 1980-02-29
HK83289A (en) 1989-10-27
NL7908690A (en) 1980-06-03
SE436528B (en) 1984-12-17
GB2038549A (en) 1980-07-23
SE7909911L (en) 1980-06-02
IT1126464B (en) 1986-05-21
IT7927773A0 (en) 1979-11-30

Similar Documents

Publication Publication Date Title
FR2443125A1 (en) PTC DEVICES INCLUDING BARRIERS AGAINST OXYGEN
FR2412189A1 (en) COMBINED CIRCUIT BREAKER-SURGE PROTECTOR
HK82589A (en) Circuit protection devices
TW342510B (en) Current interrupter for electrochemical cells
HK83389A (en) Circuit protection devices comprising ptc elements
KR970018897A (en) Protection Elements and Methods for Circuit Protection
FR2622047B1 (en) SURGE PROTECTION DEVICE COMPRISING AT LEAST ONE FUSE ELEMENT
DE2035398B2 (en) PROTECTIVE DEVICE FOR A SEMICONDUCTOR COMPONENT
US4303959A (en) Fail safe surge arrester systems
FR2846478B1 (en) MOBILE ELECTRODE OVERVOLTAGE PROTECTION DEVICE
WO2002072686A3 (en) Ptc conductive polymer compositions
FR2443737A1 (en) ELECTRIC CAPACITOR COMPRISING AN IMPROVED PROTECTION DEVICE
US4675778A (en) Overload protector for communications systems
FR2388281A1 (en) CONTROL DEVICE FOR THE DISPLAY OF AN ELECTRIC VOLTAGE AND / OR ITS POLARITY AS WELL AS THE PASSAGE OF CURRENT IN AN ELECTRIC CONDUCTOR
KR970703609A (en) Telecommunications Gas Tube Apparatus and Composition for Use Therewith
US4072835A (en) Fluid type inertia switch having resettable plunger and cone shaped retainer
US3993933A (en) Electric overvoltage gas arrester with metallic shorting mechanism
US2170337A (en) Surge-protected circuit interrupter
US3435397A (en) Combination overvoltage protective device and conductor support
JPS5828447Y2 (en) Abnormal voltage absorption device
FR2404292A1 (en) HIGH VOLTAGE DIRECT CURRENT INTERRUPTION DEVICE
KR920704316A (en) Conductive polymer devices
FR2451670A1 (en) SWITCHING DEVICE CAPABLE OF INTERRUPTING A HIGH CURRENT DIRECT CURRENT AT A HIGH VOLTAGE
CN223206213U (en) With support fuse of piece
JPH0729528Y2 (en) Lightning arrester