GB994986A - Improvements in or relating to electrical heater units of the metal clad type - Google Patents
Improvements in or relating to electrical heater units of the metal clad typeInfo
- Publication number
- GB994986A GB994986A GB3720261A GB3720261A GB994986A GB 994986 A GB994986 A GB 994986A GB 3720261 A GB3720261 A GB 3720261A GB 3720261 A GB3720261 A GB 3720261A GB 994986 A GB994986 A GB 994986A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- plug
- steatite
- electrically
- rubber
- 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
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
Landscapes
- Resistance Heating (AREA)
Abstract
994,986. Electric heaters. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. Oct. 17, 1961 [Oct. 17, 1960], No. 37202/61. Heading H5H. An electric heater-unit of the metal clad type comprises a heating element 1 embedded in electrically-insulating material 7 having good thermal conductivity, e.g. magnesite, and coaxial cylindrical metal casings 2, 3 filled with electrically-insulating material 8, e.g. steatite or a mixture of steatite and quartz, in powdered, granular or moulded form, having a higher dielectric strength than material 7. Element 1 is connected to terminal pins 4, 5, pin 4 being electrically-connected to casing 2 whereas pin 5 is provided with a nut 20 for pressing an insulating bush 19 against a terminal clamping ring 18 which is attached to casing 2. Casing 3 is closed at one end by a moulded-steatite member 10 and a cap 12, and at the other end by a rubber plug 14 and a self-vulcanizing mass (not shown) adjacent material 8. Plug 14 is retained by an insulating sleeve 16 and disc springs 17. Alternatively, the uppermost ends of the casings may be closed by a plug of heat-resistant rubber or synthetic plastic material (not shown) which is retained by a flange on casing 3; and plug 14 may be replaced by a mass of selfvulcanizing rubber (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1960L0037283 DE1259479B (en) | 1958-07-02 | 1960-10-17 | Electric high voltage immersion heater |
Publications (1)
Publication Number | Publication Date |
---|---|
GB994986A true GB994986A (en) | 1965-06-10 |
Family
ID=7267827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3720261A Expired GB994986A (en) | 1960-10-17 | 1961-10-17 | Improvements in or relating to electrical heater units of the metal clad type |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB994986A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3305820A (en) * | 1964-03-23 | 1967-02-21 | Thomas H Lennox | Resistance heating element |
US3350544A (en) * | 1964-05-01 | 1967-10-31 | Arc O Vec Inc | Thermo-electrically controlled electrical heater |
ITAN20130212A1 (en) * | 2013-11-18 | 2015-05-19 | Thermowatt Spa | ELECTRIC RESISTANCE WITH MULTIPLE ISOLATION |
-
1961
- 1961-10-17 GB GB3720261A patent/GB994986A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3305820A (en) * | 1964-03-23 | 1967-02-21 | Thomas H Lennox | Resistance heating element |
US3350544A (en) * | 1964-05-01 | 1967-10-31 | Arc O Vec Inc | Thermo-electrically controlled electrical heater |
ITAN20130212A1 (en) * | 2013-11-18 | 2015-05-19 | Thermowatt Spa | ELECTRIC RESISTANCE WITH MULTIPLE ISOLATION |
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