GB653641A - Improvements in and relating to temperature control devices for electric blankets - Google Patents
Improvements in and relating to temperature control devices for electric blanketsInfo
- Publication number
- GB653641A GB653641A GB4928/48A GB492848A GB653641A GB 653641 A GB653641 A GB 653641A GB 4928/48 A GB4928/48 A GB 4928/48A GB 492848 A GB492848 A GB 492848A GB 653641 A GB653641 A GB 653641A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- blanket
- relay
- energized
- variations
- 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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
- H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Resistance Heating (AREA)
- Control Of Temperature (AREA)
Abstract
653,641. Automatic temperature control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 19, 1948, No. 4928. Convention date, Feb. 20, 1947. [Class 38 (iv)] The temperature of an electrically heated blanket is maintained constant by means of a valve operated relay controlling the heating circuit. As shown, a blanket 1 includes heater elements 6, 7 energized from a source 11, 12 by operation of a relay 23. The blanket also includes a temperature sensitive resistance 8 which, in series with an adjustable regulating 13, forms one arm of a bridge network energized from source 11, 12. The filament 19 of an emission limited diode 18, the diode being such that the plate current is dependent entirely on the filament current, is connected across the output of the bridge. Variations of the resistance of 8, due to variations of the temperature of the blanket, cause variation of the filament current, and therefore of the plate current of the diode to operate the relay 23 which controls the heating of the blanket in a sense to correct for the variations. Close regulation is achieved by a resistance 30 connected in series with the heater windings 6, 7 in such a manner that this combination is in parallel with the resistance 8 when the relay 23 is de-energized, but when the relay is energized the resistance. 30 is connected in parallel with a resistance 15 which forms another arm of the bridge network. The effect on the filament 19 of variations in line voltage is compensated for by a resistance 17 having a high negative temperature co-efficient.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US653641XA | 1947-02-20 | 1947-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB653641A true GB653641A (en) | 1951-05-23 |
Family
ID=22062193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4928/48A Expired GB653641A (en) | 1947-02-20 | 1948-02-19 | Improvements in and relating to temperature control devices for electric blankets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB653641A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971990C (en) * | 1955-06-15 | 1959-05-06 | August Kolbe | Tactile organ in the form of a hair curler or clip to be inserted into the hair to determine its dryness |
| DE1065024B (en) * | 1952-08-06 | 1959-09-10 | Telefunken Gmbh | Circuit arrangement for regulating the temperature of components |
| EP1328137A2 (en) * | 2002-01-14 | 2003-07-16 | Malden Mills Industries, Inc. | Electric heating/warming fabric articles |
| US7202443B2 (en) | 2002-01-14 | 2007-04-10 | Malden Mills Industries, Inc. | Electric heating/warming fabric articles |
| EP1793651A1 (en) * | 2002-01-14 | 2007-06-06 | Malden Mills Industries, Inc. | Electronic heating/warming fabric articles |
| US7268320B2 (en) | 2002-01-14 | 2007-09-11 | Mmi-Ipco, Llc | Electric heating/warming fabric articles |
| US7777156B2 (en) | 2002-01-14 | 2010-08-17 | Mmi-Ipco, Llc | Electric heating/warming fabric articles |
-
1948
- 1948-02-19 GB GB4928/48A patent/GB653641A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1065024B (en) * | 1952-08-06 | 1959-09-10 | Telefunken Gmbh | Circuit arrangement for regulating the temperature of components |
| DE971990C (en) * | 1955-06-15 | 1959-05-06 | August Kolbe | Tactile organ in the form of a hair curler or clip to be inserted into the hair to determine its dryness |
| EP1328137A2 (en) * | 2002-01-14 | 2003-07-16 | Malden Mills Industries, Inc. | Electric heating/warming fabric articles |
| EP1328137A3 (en) * | 2002-01-14 | 2004-04-14 | Malden Mills Industries, Inc. | Electric heating/warming fabric articles |
| US7202443B2 (en) | 2002-01-14 | 2007-04-10 | Malden Mills Industries, Inc. | Electric heating/warming fabric articles |
| EP1793651A1 (en) * | 2002-01-14 | 2007-06-06 | Malden Mills Industries, Inc. | Electronic heating/warming fabric articles |
| US7268320B2 (en) | 2002-01-14 | 2007-09-11 | Mmi-Ipco, Llc | Electric heating/warming fabric articles |
| US7777156B2 (en) | 2002-01-14 | 2010-08-17 | Mmi-Ipco, Llc | Electric heating/warming fabric articles |
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