GB2225167A - Magnetic holding devices - Google Patents
Magnetic holding devices Download PDFInfo
- Publication number
- GB2225167A GB2225167A GB8827016A GB8827016A GB2225167A GB 2225167 A GB2225167 A GB 2225167A GB 8827016 A GB8827016 A GB 8827016A GB 8827016 A GB8827016 A GB 8827016A GB 2225167 A GB2225167 A GB 2225167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- magnetised
- medium
- coating
- heating pad
- 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.)
- Withdrawn
Links
- 230000005291 magnetic effect Effects 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 10
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 6
- 229920002554 vinyl polymer Polymers 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004411 aluminium Substances 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 239000004834 spray adhesive Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 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
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H05B3/845—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields specially adapted for reflecting surfaces, e.g. bathroom - or rearview mirrors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0252—PM holding devices
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
- Surface Heating Bodies (AREA)
Abstract
In order to secure a heating pad 6 to the back of a mirror 2, the rear surface of the mirror is coated with a layer 18 comprising a spray adhesive carrier in which ferromagnetic powder is suspended. The layer may also include a heat conductive powder such as aluminium or copper. A magnetised vinyl coating 16 is applied to one surface of the heating pad to magnetically hold the pad against the layer 18. The pad may also be applied to the sides of a water tank. <IMAGE>
Description
FIXING
The present invention relates to the technical field of fixing together surfaces of components and, more specifically, to a technique which can be used for fixing a heating pad to a bathroom mirror. The invention also relates to a medium which is employed in the fixing technique.
Magnetised coatings are now available which can be applied to all manner of objects enabling them to be removably fixed to ferromagnetic surfaces. It is, of course, impossible to fix such a coated article to any other type of surface.
This represents a limitation in the use of such fixing techniques.
In order to overcome this problem the present invention provides a medium comprising a carrier and a distributed ferromagnetic material. This medium can be applied, for example, by spraying to any surface. The medium can be used to solve many technical problems. It will be appreciated that any surface treated with the medium will attract anything with a magnetised coating. Since magnetised coatings can now be applied to all manor of lightweight objects, such as advertising signs, the use of this medium allows for removable fixing of any appropriately magnetic or magnetised object to virtually any surface.
Condensation on bathroom mirrors presents a significant problem. The presence of such condensation after a hot bath or shower means that the bather must first wipe the mirror before he can use it for shaving or other purposes. If the atmosphere in the bathroom remains humid, repeated wiping is necessary.
In order to overcome this problem, the present invention provides a heating system for a mirror, comprising a laminar heating pad including an electric heating element, one surface of the heating pad having a magnetised coating, and a coating of a medium as previously defined applied to a rear surface of the mirror. In this way the treated mirror surface is magnetically attracted to the coated heating pad.
Such a system uses a medium which is preferably composed of a suspension of ferromagnetic in an adhesive carrier which can be sprayed onto the rear, silvered surface of the mirror. For the purposes of that use, the medium preferably also includes a conductive powder such as aluminium or copper powder in suspension in the adhesive carrier to improve heat conduction from the heating pad to the mirror.
The medium of the invention together with an embodiment of its use in fixing a heating pad to a bathroom mirror will now be described, by way of example only, with reference to the accompanying diagrammatic drawing, which shows a transverse section through a mirror and heating pad.
A mirror 2 has a reflective backing or silvered layer 4. A heating pad 6 contains an electric heating element 8 together with a power supply cable 10. The heating element and power supply cable are integrally cast into a flexible plastics material 12. The overall thickness of the heating pad is typically 100 microns. The heating element 10 may be a laminar carbon film, though other types of element may be employed. The use of a carbon film provides an even distribution of heat avoiding hot spots. Such heating pads are manufactured by Ultratherm Limited.
The power cable 10 is provided with a plug 14 which allows power to be supplied from the mains. The plug 14 may be adapted to fit into a normal bathroom shaver socket.
Alternatively, it will be appreciated that the power cable may be permanently connected to the mains power supply with a switch means interposed in the circuit to control the supply of power to the heating element.
A magnetised vinyl coating 16 is applied to one major surface of the heating pad. Such magnetised flexible coatings are known in the art and are extensively used with advertising materials to allow them to be fixed to any ferromagnetic surface. Stickers provided with a backing of such magnetised vinyl are also popularly sold and are frequently to be seen upon refrigerator doors. Any other type of coating which provides a magnetised surface may be employed.
It has hitherto been a limitation of the use of such magnetised vinyl coatings that they can only be used to fix a coated article to a ferromagnetic surface such as a car or refrigerator door made of steel. It is now proposed to provide a medium which can be readily applied, such as by spraying, to any surface so that it will support a lightweight magnetised vinyl-coated article. This medium is coated in a layer 18 onto the back of the mirror 2. The medium to be employed for this purpose is a spray adhesive carrier in which there is suspended finely divided ferromagnetic powder and also a conductive powder. The conductive powder is preferably aluminium or copper powder.
The use of this conductive powder facilitates heat conduction from the heating pad through to the mirror. In applications where such conduction is unnecessary, the medium need not contain such a conductive powder. The ferromagnetic powder may be a steel powder.
The heating pad may be of any shape. Since the heated area of the mirror will be free of condensation, the shape of the heating pad will determine the condensation-free area of the mirror surface. Fun effects can be produced by shaping the heating pad or the heating element within it so that a design is produced on the mirror surface. For example, the
R.l K profile of a cartoon character, such as Mickey Mousekcould readily be produced on the user's mirror surface by shaping the heating pad or heating element appropriately.
The heating pad described may also be fixed to other types of surface which need to be heated. For example, the sides of a water tank in a loft. Since the medium allows any surface to attract the magnetised coating of the heating pad, there is very little restriction on the type of surfaces to which fixing may be made. Since the actual fixing between the pad and the surface to which it is fixed is by means of magnetic attraction, the heating pad is readily removable.
In order that the heating pad can be fixed behind an existing bathroom mirror, the overall thickness is desirably kept to a minimum. This is readily possible since heating pads of thickness of 100 microns are available and the magnetised vinyl coating need only be a few microns thick.
Claims (7)
1. A medium comprising a carrier and a distributed ferromagnetic material.
2. A method of removably fixing together two surfaces, comprising providing one surface with a coating of magnetised material and the other surface with a coating of a medium as claimed in claim 1.
3. A method as claimed in claim 2, wherein the coating of magnetised material is a coating of magnetised plastics material.
4. A heating system for a mirror, comprising a laminar heating pad including an electric heating element, one surface of the heating pad having a magnetised coating, and a coating of a medium in accordance with claim 1 applied to a rear surface of the mirror.
5. A medium substantially as herein described for enabling fixing of a magnetised surface to a surface treated with said medium.
6. A heating system for a mirror substantially as herein described with reference to the accompanying drawing.
7. A method of fixing together two surfaces substantially as herein described with reference to the accompanying drawing.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8827016A GB2225167A (en) | 1988-11-18 | 1988-11-18 | Magnetic holding devices |
| GB898905800A GB8905800D0 (en) | 1988-11-18 | 1989-03-14 | Prevention of condensation |
| GB898922293A GB8922293D0 (en) | 1988-11-18 | 1989-10-03 | Bathroom mirror |
| EP19890913016 EP0444099A1 (en) | 1988-11-18 | 1989-11-17 | Prevention of condensation on a mirror |
| AU46251/89A AU4625189A (en) | 1988-11-18 | 1989-11-17 | Prevention of condensation on a mirror |
| PCT/GB1989/001370 WO1990005931A1 (en) | 1988-11-18 | 1989-11-17 | Prevention of condensation on a mirror |
| GB9109298A GB2242831B (en) | 1988-11-18 | 1991-04-30 | Prevention of condensation on a mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8827016A GB2225167A (en) | 1988-11-18 | 1988-11-18 | Magnetic holding devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8827016D0 GB8827016D0 (en) | 1988-12-21 |
| GB2225167A true GB2225167A (en) | 1990-05-23 |
Family
ID=10647087
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8827016A Withdrawn GB2225167A (en) | 1988-11-18 | 1988-11-18 | Magnetic holding devices |
| GB898905800A Pending GB8905800D0 (en) | 1988-11-18 | 1989-03-14 | Prevention of condensation |
| GB898922293A Pending GB8922293D0 (en) | 1988-11-18 | 1989-10-03 | Bathroom mirror |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB898905800A Pending GB8905800D0 (en) | 1988-11-18 | 1989-03-14 | Prevention of condensation |
| GB898922293A Pending GB8922293D0 (en) | 1988-11-18 | 1989-10-03 | Bathroom mirror |
Country Status (1)
| Country | Link |
|---|---|
| GB (3) | GB2225167A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2248791A (en) * | 1990-07-10 | 1992-04-22 | Harold Birkett | Method for applying protective covering to surfaces |
| FR2690808A1 (en) * | 1992-05-04 | 1993-11-05 | Aaa Telec | Magnetically adhering electrical heating elements e.g. for railway tracks - has linear insulated resistive element held close to surface to be heated by permanent magnet plates. |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859862A (en) * | 1958-02-20 | 1961-01-25 | Goodrich Co B F | Elongated flexible magnet systems |
| GB875807A (en) * | 1957-02-09 | 1961-08-23 | Baermann Max | Improvements in or relating to permanent magnets |
| GB903287A (en) * | 1958-11-24 | 1962-08-15 | Goodrich Co B F | Flexible magnet |
| GB950273A (en) * | 1959-12-02 | 1964-02-26 | Darwins Ltd | Improvements in or relating to magnetic holding devices |
| GB950277A (en) * | 1959-12-02 | 1964-02-26 | Darwins Ltd | Improvements in or relating to flexible permanent magnet material |
| GB1037426A (en) * | 1962-09-08 | 1966-07-27 | Baermann Max | Improvements in or relating to magnetic sealing strips for containers |
| US3629756A (en) * | 1970-03-23 | 1971-12-21 | Herman Holtz | Thin sheet magnet |
| GB1319539A (en) * | 1969-07-04 | 1973-06-06 | Kores Sa | Attachment of articles to supports |
| GB2086689A (en) * | 1980-10-02 | 1982-05-12 | Konan Camera Res Inst | Photographic transparency supporting device |
-
1988
- 1988-11-18 GB GB8827016A patent/GB2225167A/en not_active Withdrawn
-
1989
- 1989-03-14 GB GB898905800A patent/GB8905800D0/en active Pending
- 1989-10-03 GB GB898922293A patent/GB8922293D0/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB875807A (en) * | 1957-02-09 | 1961-08-23 | Baermann Max | Improvements in or relating to permanent magnets |
| GB859862A (en) * | 1958-02-20 | 1961-01-25 | Goodrich Co B F | Elongated flexible magnet systems |
| GB903287A (en) * | 1958-11-24 | 1962-08-15 | Goodrich Co B F | Flexible magnet |
| GB950273A (en) * | 1959-12-02 | 1964-02-26 | Darwins Ltd | Improvements in or relating to magnetic holding devices |
| GB950277A (en) * | 1959-12-02 | 1964-02-26 | Darwins Ltd | Improvements in or relating to flexible permanent magnet material |
| GB1037426A (en) * | 1962-09-08 | 1966-07-27 | Baermann Max | Improvements in or relating to magnetic sealing strips for containers |
| GB1319539A (en) * | 1969-07-04 | 1973-06-06 | Kores Sa | Attachment of articles to supports |
| US3629756A (en) * | 1970-03-23 | 1971-12-21 | Herman Holtz | Thin sheet magnet |
| GB2086689A (en) * | 1980-10-02 | 1982-05-12 | Konan Camera Res Inst | Photographic transparency supporting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2248791A (en) * | 1990-07-10 | 1992-04-22 | Harold Birkett | Method for applying protective covering to surfaces |
| FR2690808A1 (en) * | 1992-05-04 | 1993-11-05 | Aaa Telec | Magnetically adhering electrical heating elements e.g. for railway tracks - has linear insulated resistive element held close to surface to be heated by permanent magnet plates. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8827016D0 (en) | 1988-12-21 |
| GB8922293D0 (en) | 1989-11-15 |
| GB8905800D0 (en) | 1989-04-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |