Electric heating system for a fluid line system
US-8965187-B2 · Feb 24, 2015 · US
Heating resistor
US2016338149A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016338149-A1 |
| Application number | US-201615149485-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 9, 2016 |
| Priority date | May 11, 2015 |
| Publication date | Nov 17, 2016 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Disclosed is a heating resistor comprising a body of a ceramic PTC resistor material with at least one face of the body coated by a layer of an NTC material. The combination of a PTC resistor and an NTC resistor limits the inrush current at the beginning of a heating process when the PTC resistor is still cold and therefore has a low electrical resistance. When the resistor is heated, the electrical resistance of the NTC resistor decreases while the electrical resistance of the PTC resistor increases. Thus, the electric current changes less until the PTC resistor reaches its critical temperature where its electrical resistance increases by several orders of magnitude. The lowering of electrical current at the beginning of the heating process is especially advantageous in applications that rely on a limited power supply, for example a car battery.
First claim
Opening claim text (preview).
What is claimed is: 1 . A heating resistor, comprising: a body of a ceramic PTC resistor material; and a layer of NTC material coated on at least one face of the body. 2 . The heating resistor according to claim 1 , wherein the NTC material is a ceramic NTC material. 3 . The heating resistor according to claim 1 , wherein the layer is a printed layer. 4 . The heating resistor according to claim 1 , wherein the body is a disk. 5 . The heating resistor according to claim 1 , wherein the body is a cuboid. 6 . The heating resistor according to claim 1 , wherein an intermediate layer is arranged between the body and the NTC layer. 7 . The heating resistor according to claim 1 , wherein the intermediate layer is a metallic layer. 8 . The heating resistor according to claim 1 , wherein the at least one face of the body comprises an upper face and a lower face, the layer of the NTC material being deposited on the upper and lower faces. 9 . The heating resistor according to claim 1 , wherein the layer of NTC material directly contacts the at least one face of the body.
Assignees
Inventors
Classifications
- H05B3/141Primary
Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds · CPC title
having negative temperature coefficient · CPC title
- H01C7/022Primary
mainly consisting of non-metallic substances (H01C7/021 takes precedence) · CPC title
Heaters using heating elements having a positive temperature coefficient · CPC title
- H01C7/02Primary
having positive temperature coefficient · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016338149A1 cover?
- Disclosed is a heating resistor comprising a body of a ceramic PTC resistor material with at least one face of the body coated by a layer of an NTC material. The combination of a PTC resistor and an NTC resistor limits the inrush current at the beginning of a heating process when the PTC resistor is still cold and therefore has a low electrical resistance. When the resistor is heated, the elect…
- Who is the assignee on this patent?
- Borgwarner Ludwigsburg Gmbh
- What technology area does this patent fall under?
- Primary CPC classification H05B3/141. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 17 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).