EP1326481A3 - PTC resistors and method of making - Google Patents
PTC resistors and method of making Download PDFInfo
- Publication number
- EP1326481A3 EP1326481A3 EP02079018A EP02079018A EP1326481A3 EP 1326481 A3 EP1326481 A3 EP 1326481A3 EP 02079018 A EP02079018 A EP 02079018A EP 02079018 A EP02079018 A EP 02079018A EP 1326481 A3 EP1326481 A3 EP 1326481A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- fitting
- tube
- magnesium oxide
- making
- heating element
- 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
Links
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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/52—Apparatus or processes for filling or compressing insulating material in tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/028—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
- H01C1/03—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath with powdered insulation
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Resistance Heating (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Thermistors And Varistors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Hinges (AREA)
- Wing Frames And Configurations (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
- fitting, inside a tube (1) which constitutes the container of the resistor, at least two layers of insulating material (2) in correspondence with the internal surface of said tube;
- fitting a heating element composed of one or more PTC elements (4) clamped between a pair of diffusers (5) inside said tube, after fitting one or more centring elements;
- filling the spaces between said heating element and said insulating layer with pulverized magnesium oxide (6);
- compacting said magnesium oxide;
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00022/02A CH696614A5 (en) | 2002-01-07 | 2002-01-07 | Method for producing class 2 resistors with PTC resistors and so produced. |
CH222002 | 2002-01-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1326481A2 EP1326481A2 (en) | 2003-07-09 |
EP1326481A3 true EP1326481A3 (en) | 2003-07-23 |
EP1326481B1 EP1326481B1 (en) | 2005-01-12 |
Family
ID=4228650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02079018A Expired - Lifetime EP1326481B1 (en) | 2002-01-07 | 2002-09-30 | Method of making a heating resistor with PTC elements |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1326481B1 (en) |
AT (1) | ATE287194T1 (en) |
BR (1) | BR8200046U (en) |
CH (1) | CH696614A5 (en) |
DE (1) | DE60202586T8 (en) |
ES (1) | ES2234979T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120217233A1 (en) * | 2011-02-28 | 2012-08-30 | Tom Richards, Inc. | Ptc controlled environment heater |
WO2019079302A1 (en) | 2017-10-19 | 2019-04-25 | Tom Richards, Inc. | Heat transfer assembly |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB832503A (en) * | 1956-01-17 | 1960-04-13 | British Insulated Callenders | Improvements relating to electric heating cables |
US4087777A (en) * | 1973-12-21 | 1978-05-02 | Dynamit Nobel Aktiengesellschaft | Electrical heating assembly having a thermally conductive refractory electrical insulating embedding composition between an electrically conductive member and a jacket |
US4104509A (en) * | 1975-09-23 | 1978-08-01 | U.S. Philips Corporation | Self-regulating heating element |
US4147927A (en) * | 1975-04-07 | 1979-04-03 | U.S. Philips Corporation | Self-regulating heating element |
US4972067A (en) * | 1989-06-21 | 1990-11-20 | Process Technology Inc. | PTC heater assembly and a method of manufacturing the heater assembly |
-
2002
- 2002-01-07 CH CH00022/02A patent/CH696614A5/en not_active IP Right Cessation
- 2002-01-08 BR BR8200046-8U patent/BR8200046U/en not_active IP Right Cessation
- 2002-09-30 EP EP02079018A patent/EP1326481B1/en not_active Expired - Lifetime
- 2002-09-30 DE DE60202586T patent/DE60202586T8/en not_active Expired - Fee Related
- 2002-09-30 ES ES02079018T patent/ES2234979T3/en not_active Expired - Lifetime
- 2002-09-30 AT AT02079018T patent/ATE287194T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB832503A (en) * | 1956-01-17 | 1960-04-13 | British Insulated Callenders | Improvements relating to electric heating cables |
US4087777A (en) * | 1973-12-21 | 1978-05-02 | Dynamit Nobel Aktiengesellschaft | Electrical heating assembly having a thermally conductive refractory electrical insulating embedding composition between an electrically conductive member and a jacket |
US4147927A (en) * | 1975-04-07 | 1979-04-03 | U.S. Philips Corporation | Self-regulating heating element |
US4104509A (en) * | 1975-09-23 | 1978-08-01 | U.S. Philips Corporation | Self-regulating heating element |
US4972067A (en) * | 1989-06-21 | 1990-11-20 | Process Technology Inc. | PTC heater assembly and a method of manufacturing the heater assembly |
Also Published As
Publication number | Publication date |
---|---|
EP1326481A2 (en) | 2003-07-09 |
DE60202586T2 (en) | 2005-12-29 |
BR8200046U (en) | 2004-07-13 |
DE60202586T8 (en) | 2006-05-11 |
CH696614A5 (en) | 2007-08-15 |
ATE287194T1 (en) | 2005-01-15 |
EP1326481B1 (en) | 2005-01-12 |
ES2234979T3 (en) | 2005-07-01 |
DE60202586D1 (en) | 2005-02-17 |
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