DE139044C - - Google Patents
Info
- Publication number
- DE139044C DE139044C DENDAT139044D DE139044DA DE139044C DE 139044 C DE139044 C DE 139044C DE NDAT139044 D DENDAT139044 D DE NDAT139044D DE 139044D A DE139044D A DE 139044DA DE 139044 C DE139044 C DE 139044C
- Authority
- DE
- Germany
- Prior art keywords
- mica
- tension
- mica plates
- pressure plate
- resistance
- 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.)
- Active
Links
- 239000010445 mica Substances 0.000 claims description 23
- 229910052618 mica group Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 description 4
- 229910052895 riebeckite Inorganic materials 0.000 description 4
- 238000005253 cladding Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
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
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
Landscapes
- Surface Heating Bodies (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE139044C true DE139044C (Direct) |
Family
ID=406812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT139044D Active DE139044C (Direct) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE139044C (Direct) |
-
0
- DE DENDAT139044D patent/DE139044C/de active Active
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