US2184485A - Low power heating element - Google Patents
Low power heating element Download PDFInfo
- Publication number
- US2184485A US2184485A US133710A US13371037A US2184485A US 2184485 A US2184485 A US 2184485A US 133710 A US133710 A US 133710A US 13371037 A US13371037 A US 13371037A US 2184485 A US2184485 A US 2184485A
- Authority
- US
- United States
- Prior art keywords
- heating element
- coil
- cushion
- low power
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title description 14
- 239000011490 mineral wool Substances 0.000 description 11
- 239000011491 glass wool Substances 0.000 description 10
- 238000005485 electric heating Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
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
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
Definitions
- the present invention has for its object a low power electric heating element, characterized by the fact that the electric heating resistance is completely embedded and held against displacement in an insulating cushion formed of glass wool or of slag wool.
- Fig. 1 represents the heating element in cross section
- Figs. 2, 3 and 4 show the same heating element in cross section during various images of its manufacture.
- a heating element according to the invention is seen in section.
- the heating resistance l in the shape of a coil is completely embedded in a cushion 2 made of glass wool or slag wool.
- a heating element of this kind can be used in a number of low power apparatus: heating cushions or mats, heating panels or plates, etc. It has the advantage of being simple and perfectly insulated.
- the invention further relates to a method of manufacturing the said heating element, which method is carried out in the following manner:
- this fused glass wool or slag wool solidifies into a thin layer which adapts itself exactly to the shape of the heating ofthe wire and at the same time is fused to the fibers of the glass wool or slag wool, which results in an elastic but comparatively firm connection between the cashion and the wire, and the element does not lose its elasticity on account of the spacing of the wire convolutions.
- the current is out off, the heating element is made and it then sumces to remove-the pressing apparatus toenable said element to be mounted in an apparatus in which it is to be used.
- An electric heating element comprising a fist, flexible cushion made of an electrically in-- misting-fusible material in fibrous state. an'elcctric resistance embedded immediately belowthe upper surface of said cushion, and a non-fibrous layer of said fusible material coating a substantial portion of said resistance, said layer being fused to said fusible material in fibrous state.
- An electric heating element comprising a flat flexible cushion made of glass wool, 'and an electric resistance embedded immediately below the upper surface of said cushion, and a layer of non-fibrous glass coating a substantial portion of said resistance, said layer being fused to said glass wool.
- An electric heating element comprising a flat flexible cushion made of slag wool, and an electric resistance embedded immediately below the upper surface of said cushion, and a layer of non-fibrous slag costing a substantial portion of said resistance, said layer being fused to said slag wool.
- a flexible go electric heating element which comprises placing a resistance coil on a flexible cushion made or an electrically insulating fusible material in fibrous state, pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said coilv to incandescence,
- the method of manufacturing a flexible electric heating element which comprises placing a resistance coil on a flexible cushion made as of glass wool, pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said, coil to incandescence, thereby softeningthe insulating cushion, continuing the pressure until the coilbecomes emw bedded in said cushion, and cutting off said current after said coil has become embedded in said glass wool and before the glass wool not immediately adjacent to said coil has fused.
- the method of manufacturing a flexible a electric heating element which comprises placing a resistance coil on 'a' flexible cushion made of slag wool, "pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said coil to incandescence thereby softening the insulating cushion, continuing the pressure until the coil becomes embedded in said cushion and cutting off said ourrentafter said coil has become embedded in said slag wool and before the slag wool' not immedi 5 ately adiacenttosaidcoilhasfuscd.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Resistance Heating (AREA)
Description
Dec. 26, 1939. g -r 2,184,485
LOW POWER HEATING ELEMENT Filed March 29, 1937 semi. n... as, 1939 LOW POWER HEATING ELEMENT Etienne Challet, Paris, France, assignor of onefourth to Entreprises Electriques Fribourgeoises, llhrlibourg, Switzerland, as company of Switzer- Application March 29, 1937, Serial No. 133,710
In Switzerland April 6, 1936 6 Claims.
The present invention has for its object a low power electric heating element, characterized by the fact that the electric heating resistance is completely embedded and held against displacement in an insulating cushion formed of glass wool or of slag wool.
'The nature of the invention is clearly set forth in the drawing, of which Fig. 1 represents the heating element in cross section; 4
Figs. 2, 3 and 4 show the same heating element in cross section during various images of its manufacture.
In Fig. 1 a heating element according to the invention is seen in section. The heating resistance l in the shape of a coil is completely embedded in a cushion 2 made of glass wool or slag wool.
A heating element of this kind can be used in a number of low power apparatus: heating cushions or mats, heating panels or plates, etc. It has the advantage of being simple and perfectly insulated.
The invention further relates to a method of manufacturing the said heating element, which method is carried out in the following manner:
On a layer of glass woo or slag wool are placed the convolutions 4 of the resistance and an insulating plate 5 is placed over it, as seen in Fig. 2.
The whole arrangement is placed in a press jig (Fig. 3) shown in this case by two plates and I, which can be moved towards each other by means of nut which screw on screwed rods. After suitably clamping, a much stronger current is passed than that used in the normal service of the future heating element, in order to heat the. wire to incandescence. The heat emanating from the wire fuses the glass wool or slag wool immediately adjacent to the wire. After cooling this fused glass wool or slag wool solidifies into a thin layer which adapts itself exactly to the shape of the heating ofthe wire and at the same time is fused to the fibers of the glass wool or slag wool, which results in an elastic but comparatively firm connection between the cashion and the wire, and the element does not lose its elasticity on account of the spacing of the wire convolutions. The current is out off, the heating element is made and it then sumces to remove-the pressing apparatus toenable said element to be mounted in an apparatus in which it is to be used. v
I claim:
1. An electric heating element, comprising a fist, flexible cushion made of an electrically in-- misting-fusible material in fibrous state. an'elcctric resistance embedded immediately belowthe upper surface of said cushion, and a non-fibrous layer of said fusible material coating a substantial portion of said resistance, said layer being fused to said fusible material in fibrous state.
2. An electric heating element, comprising a flat flexible cushion made of glass wool, 'and an electric resistance embedded immediately below the upper surface of said cushion, and a layer of non-fibrous glass coating a substantial portion of said resistance, said layer being fused to said glass wool.
3. An electric heating element, comprising a flat flexible cushion made of slag wool, and an electric resistance embedded immediately below the upper surface of said cushion, and a layer of non-fibrous slag costing a substantial portion of said resistance, said layer being fused to said slag wool.
4. The method of manufacturing a flexible go electric heating element, which comprises placinga resistance coil on a flexible cushion made or an electrically insulating fusible material in fibrous state, pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said coilv to incandescence,
thereby softening the insulating cushion, continuing the pressure until the coil'becomes embedded in said cushion, and cutting said current after said coil has become embedded in said material and before the material not immediately adjacent to said coil has fused.
5. The method of manufacturing a flexible electric heating element, which comprises placing a resistance coil on a flexible cushion made as of glass wool, pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said, coil to incandescence, thereby softeningthe insulating cushion, continuing the pressure until the coilbecomes emw bedded in said cushion, and cutting off said current after said coil has become embedded in said glass wool and before the glass wool not immediately adjacent to said coil has fused.
6. The method of manufacturing a flexible a electric heating element, which comprises placing a resistance coil on 'a' flexible cushion made of slag wool, "pressing the coil against the cushion, passing a strong current through the wire of the coil to heat said coil to incandescence thereby softening the insulating cushion, continuing the pressure until the coil becomes embedded in said cushion and cutting off said ourrentafter said coil has become embedded in said slag wool and before the slag wool' not immedi 5 ately adiacenttosaidcoilhasfuscd.
1 i s'rmrmloasnn'r.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2184485X | 1936-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2184485A true US2184485A (en) | 1939-12-26 |
Family
ID=4567889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US133710A Expired - Lifetime US2184485A (en) | 1936-04-06 | 1937-03-29 | Low power heating element |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2184485A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431998A (en) * | 1945-12-22 | 1947-12-02 | Safeway Heat Elements Inc | Heating utensil |
| US2434628A (en) * | 1943-11-18 | 1948-01-13 | Jr Edward E Simmons | Method of making strain gages |
| US2470509A (en) * | 1945-05-02 | 1949-05-17 | Pittsburgh Plate Glass Co | Method of making heated window glass |
| US2474988A (en) * | 1943-08-30 | 1949-07-05 | Sargrove John Adolph | Method of manufacturing electrical network circuits |
| US2623145A (en) * | 1946-03-22 | 1952-12-23 | David T Siegel | Resistor structure and method of manufacture |
| US2976393A (en) * | 1958-09-05 | 1961-03-21 | Illingworth Alec Ronald | Floor coverings, underfelts, underlays and the like |
| US20110074380A1 (en) * | 2008-05-28 | 2011-03-31 | Silveray Co., Ltd. | Electric conduction pad and manufacturing method thereof |
-
1937
- 1937-03-29 US US133710A patent/US2184485A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474988A (en) * | 1943-08-30 | 1949-07-05 | Sargrove John Adolph | Method of manufacturing electrical network circuits |
| US2434628A (en) * | 1943-11-18 | 1948-01-13 | Jr Edward E Simmons | Method of making strain gages |
| US2470509A (en) * | 1945-05-02 | 1949-05-17 | Pittsburgh Plate Glass Co | Method of making heated window glass |
| US2431998A (en) * | 1945-12-22 | 1947-12-02 | Safeway Heat Elements Inc | Heating utensil |
| US2623145A (en) * | 1946-03-22 | 1952-12-23 | David T Siegel | Resistor structure and method of manufacture |
| US2976393A (en) * | 1958-09-05 | 1961-03-21 | Illingworth Alec Ronald | Floor coverings, underfelts, underlays and the like |
| US20110074380A1 (en) * | 2008-05-28 | 2011-03-31 | Silveray Co., Ltd. | Electric conduction pad and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107396464B (en) | Curing molding equipment for PTC heating device | |
| US3729616A (en) | Electrically heated window | |
| US3745309A (en) | Electrically heated transparent panel | |
| US2184485A (en) | Low power heating element | |
| US2350887A (en) | Method of manufacturing parts for electrical apparatus | |
| US3340606A (en) | Printed circuit structure and method of making the same | |
| US2497665A (en) | Piezoelectric device | |
| US2870277A (en) | Reconstituted mica heating element | |
| US2553762A (en) | Electrical heating element and method of making the same | |
| US3895433A (en) | Electrically heated transparent panel | |
| US1657479A (en) | Electric heating device | |
| US3053969A (en) | Method and apparatus for metal structural panel construction | |
| US1777644A (en) | Apparatus for severing glass sheets | |
| US3541682A (en) | Process for manufacturing coil components and transformers | |
| US2427379A (en) | Electric iron | |
| US3795472A (en) | Apparatus for the production of electrically heated window | |
| US4698277A (en) | High-temperature laminated insulating member | |
| US2125896A (en) | Article of manufacture and method of producing the same | |
| US1541513A (en) | Electric resistance welding | |
| US2175824A (en) | Method of making electric heating units | |
| US1595799A (en) | Heated element | |
| US2328470A (en) | Dynamoelectric machine coil support | |
| US1857828A (en) | Circuit controlling device | |
| US1595793A (en) | Insulation-stripping mechanism | |
| US1857586A (en) | Joseph m |