GB2136257A - A sheet carrying a zigzag track e.g. a window heater - Google Patents

A sheet carrying a zigzag track e.g. a window heater Download PDF

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Publication number
GB2136257A
GB2136257A GB08314579A GB8314579A GB2136257A GB 2136257 A GB2136257 A GB 2136257A GB 08314579 A GB08314579 A GB 08314579A GB 8314579 A GB8314579 A GB 8314579A GB 2136257 A GB2136257 A GB 2136257A
Authority
GB
United Kingdom
Prior art keywords
sheet
mass
film
adhesive substance
plastics film
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Withdrawn
Application number
GB08314579A
Other versions
GB8314579D0 (en
Inventor
Heinz Pollmeier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB8314579D0 publication Critical patent/GB8314579D0/en
Publication of GB2136257A publication Critical patent/GB2136257A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10376—Laminated safety glass or glazing containing metal wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin
    • B32B17/10935—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin as a preformed layer, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/004—Heaters using a particular layout for the resistive material or resistive elements using zigzag layout
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54

Landscapes

  • Surface Heating Bodies (AREA)
  • Laminated Bodies (AREA)

Abstract

A synthetic material sheet (11) is provided with one or more threads (15) e.g. a wire, the or each thread extending in zigzag shape transversely to the longitudinal extent of the sheet. The turning loops (16, 17) of the threads are arranged in the proximity of the longitudinal edges of the sheet. The sheet comprises a synthetic material film coated with a cold-setting or hot- setting mass, and the or each thread (15) is so embedded in the mass that the mass has a smooth external surface. <IMAGE>

Description

SPECIFICATION Sheet with included zigzag track The present invention relates to a sheet with an included zigzag track to act as, for example, part of an electrical circuit.
Synthetic material sheets or films with threads are known. In DE-OS 1 921 333, several and correspondingly single, parallelly extending alarm wires, which thus are electrically conductive, are embedded in a sheet. The sheet with embedded wires can then be arranged in the hollow space of an insulating double-glazing unit. In order to provide a full electric circuit, which is necessary for the creation of an alarm system and which on breakage of a wire triggers an alarm, the individual wires are connected together at their ends by further wires. This arrangement has the disadvantage that the sheet must be initially cut to the size of the window and the individual wires then connected at their ends, which involves an appreciable amount of work.Since this connecting often does not take place in the factory, but at the place of use of the sheet, a secure connection is not always guaranteed.
In order to provide a sheet which can be adapted in simple manner to different window widths and lengths, wherein the conductor arrangement embedded in or applied to the sheet is to be connected in simple manner into a circuit, it is proposed in German (Fed. Rep.) Utility Model 82 08 311 that parallelly extending conductors of the arrangement are subsequently connected in pairs and are laterally alternating on at least one side of a protective film through conducting transverse webs arranged in the region of the outside of the film. This solution also requires an appreciable amount of work in view of the subsequent arrangement of the necessary numerous transverse webs. It is also difficult to insulate the many subsequent electrical connections with adequate security and the film outer surface is not quite smooth, so that its use is limited.
There is accordingly a need for a sheet with included track, which is relatively simple to manufacture and is versatile in use.
According to the present invention there is provided an elongate sheet comprising synthetic material and provided with means defining at least one track extending in zigzag manner transversely to the longitudinal direction of the sheet.
In a preferred embodiment, a film is provided with. a thread or several threads, which extends or extend in zigzag shape transversely to the longitudinal extent of the film.
The thread can consist of various substances and be provided in various ways. Metallic or nonmetallic threads can be used, the metallic threads being wires. Fibres can also be used, with, for example, several fibres forming a thread. The threads are preferably electrically conductive. The thread can also consist of an electrically conductive linear ink application.
It is understood by zigzag-shaped course transversely to the longitudinal extent of the film that the thread is conducted moving to and fro from the region of one longitudinal edge of the film to the region of the other longitudinal edge and that respective turning loops are correspondingly present at the edges, wherein merely the start and the end of the thread in a film portion are to be connected to conductor means inorder to obtain an electrically closed circuit.
A sheet embodying the invention can find application as an "alarm film" to be attached to-a pane of glass. It can also be used as part of a heating cover, or as a heating film in nurserygardens or for the heating of a football pitch. This is possible because the sheet can be produced in a desired length and can be wound up on a roll, wherein for use only the start and the end of the track-forming means need be connected into a circuit.
it is thus possible to produce, by simple means webs of sheet material, provided with tracks in zigzag shape, of desired different widths. The spacing of the track zigzags can be varied by, for example, simple aiteration of the sheet feed speed during to and fro movement of a device for application of the means forming the track. If so desired, several tracks extending in zigzag shape can be arranged one beside the other.
Although the track forming means can be very fine, in one preferred embodiment the sheet comprises a synthetic material film coated with a cold-setting or hot-setting mass, particularly of synthetic material or synthetic resin, and a thread or threads is or are so embedded in the mass that the mass, even in the region of the thread or threads, has a smooth external surface. In the case of a transparent pane, the aforementioned mass is also transparent.
The embedding of the thread or threads in a mass coating a synthetic material film can be effected in different ways. Thus, for example, the film can be provided with a thin adhesive layer, on which the thread or the threads is or are retained after being placed on the film. After this fastening of the thread or threads to the film, a transparent mass can then be applied, which completely covers the threads and is smooth at the outside.
It is, however, also possible to apply an adhesive substance to the thread or threads and then apply the thread or threads to the film, adherence being produced by the adhesive substance. It is ensured through this measure that only a small quantity of adhesive substance is necessary and that a mass subsequently surrounding the thread or threads does not have to fulfil the task of securing the threads, but can orimarilyfulfil the requirements of ensuring stransparency, providing a smooth external surface; pnd connecting well with the film. This smooth external surface can be obtained through a roller.
The mass surrounding such a thread can, however, also be provided with special additives in order to vary the light permeability. Thus, the mass tan also be provided with ink particles in order to obtain the effect of a tinted pane. Particular effects can thus be obtained through the composition of the mass which envelops the threads. These effects might not be able to be obtained if ink particles were, for example, to be incorporated in the film itself.
The mass surrounding or enveloping the or each thread can also incorporate substances which favour the transmission of heat. This can be so if, for example, the threads are not arranged to be thin merely for the purpose of being readily breakable in an alarm circuit, but in order to provide heating wires or appropriate thickness, such wires being heatable through resistance todeliver heat to the surrounding mass and through the film to the object to be heated so that, for example, misting of a pane is avoided or misted panes are cleared.
In further embodiment, a mass embedding the track-forming means is covered at both sides with a synthetic material film.
Embodiments and examples of the present invention will now be more particularly described with reference to the accompanying drawings, in which: Fig, 1 is a perspective view of a first sheet embodying the invention, the sheet being applied to a pane of glass; Fig. 2 is a view of the sheet of Fig. 3, illustrating dimensional relationships; Fig. 3 is a front view of a second sheet embodying the invention; Fig. 4 is a front view of a third sheet embodying the invention; Fig. 5 is a vertical section of the sheet and pane of Fig.1; Fig. 6 is a section of a fourth sheet embodying the invention; Fig. 7 is a schematic perspective view illustrating production of a sheet in accordance with a first method exemplifying the invention; and Fig. 8 is a schematic perspective view illustrating production of a sheet in accordance with a second method exemplifying the invention.
Referring now to the drawings, there is shown in Fig. 1 a pane 10 of glass covered by a synthetic material sheet 11, the sheet being connected to the pane 10 by an adhesive substance 12 as shown in Fig. 5. The sheet 11 consists of a film 13, which at its side facing the pane 10 is covered by a mass 14 in which a thread, for example a wire, 1 5 is arranged.
As is evident from Fig. 1, the thread is arranged in loops which extend in zigzag shape. The turning loops 16 and 17 are arranged in the proximity of the respectively associated longitudinal edges 1 8 and 1 9 (see Fig. 2) of the sheet, which can be manufactured in any desired length and wound into a roll. This means also that a correspondingly wide sheet 11 includes loops of corresponding width.
The spacings X and Y of adjacent transversely extending sections of the thread 14 are the same in the longitudinal axis of the sheet, i.e. X = Y along this axis.
Figs. 2 and 3 show an embodiment in which two threads 1 5 (dashed line) and 15a (dotted line) are arranged to zigzag in phase-staggered relationship.
Fig. 4 shows an embodiment in which two threads 1 5 and 15a (both in dashed lines) extending one alongside the other in the sheet 11 and have turning loops 1 6 and 17 in the proximity of the associated edges 1 8 and 1 9 and further turning loops in the region of the longitudinal axis of the sheet. The sheet can be used in greenhouses, for example to cover plant beds with the sheet and provide heat by way of the threads 1 5 and 1 5a connected to act as heating resistance wires. Holes 30 and 30a are provided between the wires in order to make the sheet water permeable.
Fig. 5 shows that the thread 1 5 is arranged in the middle of the mass 14. The thread 1 5 can, if desired, be arranged to contact the film 1 3 directly. This is the case if the thread is provided with an adhesive substance and laid against the film 13.
Fig. 6 shows that the mass in which the thread 1 5 is embedded is covered at one side by the film 13 and at the other side by a film 20.
In the embodiments of Figs. 1 to 5, the thread 1 5 (or 15a) can provide a closed circuit when the ends 21 and 22 of the thread are electrically connected one with the other. This is easily possible. If the sheet is damaged through breaking of the pane, then this leads to breakage of the thread 1 5. The circuit is then interrupted and an alarm signal can be triggered.
A building glazed with panes to which such sheets are attached can thus be provided with an extensive alarm system. If events should occur within a residence giving rise to a need to trigger the alarm, then it is sufficient to damage the sheet mounted to the pane, for example by an object thrown against the pane. This leads to breakage of the thread 1 so as to trigger the alarm.
The sheet described in connection with Figs. 1 to 5 is, however, also suitable for use with heating panes.
Fig. 7 shows one example of a method of production of the sheet. In this method, a film web 13 is drawn forward by way of conveying rollers 23 and 24 and a thread 15, in the form of a wire is drawn from a spool 25 and laid on the web. A mass 14 is then applied to the film web and wire through a wide slot orifice 26 and subsequently smoothed by a roller 27. A further film web 20 is then laid onto the mass 1 4 thus smoothed.
Fig. 8 shows another method in which the.
thread 1 5 is produced through a metallic, conducting ink coating drawn by a stylus 28 associated with an ink container 29.
A sheet embodying the present invention may be made in a simple manner and possess a wide variety of properties. For example, an outer film of the sheet can be structured so that although it is scratch-resistant, it is nevertheless easily breakable to allow an adhering thread to be readily broken. A mass and a further film covering the mass can have other properties, for example with a view to a good thermal conductivity or tinting through ink additives. The sheet itself can be constructed to have high strength and good expansion. Adaptation to local conditions may also be readily possible. Thus, for example, the sheet can have a chemical structure adapted to the place, particularly the country, of use.

Claims (26)

1. An elongate sheet comprising synthetic material and provided with means defining at least One track extending in zigzag manner transversely to the longitudinal direction of the sheet.
2. A sheet as claimed in claim 1, wherein the reversal portions of the zigzag are disposed in the longitudinal edge portions of the sheet.
3. A sheet as claimed in either claim 1 or claim 2, said means defining a plurality of such tracks extending in zigzag manner alongside each other.
4. A sheet as claimed in claim 3, wherein the tracks cross each other.
5. A sheet as claimed in any one of the preceding claims, wherein the spacings of the transversely extending sections of the or each track are substantially equal at the longitudinal axis of the sheet.
6. A sheet as claimed in any one of claims 1 to 5, said means comprising a metallic substance.
7. A sheet as claimed in any one of claims 1 to 5, said means comprising a non-metallic substance.
8. A sheet as claimed in claim 7, said means comprising carbon fibre.
9. A sheet as claimed in claim 7, said means comprising ink.
10. A sheet as claimed in any one of the preceding claims, the sheet having openings in regions thereof free of the track or tracks.
11. A sheet as claimed in any one of the preceding claims, comprising a plastics film coated with a material mass having a smooth external surface, said means being embedded in the mass.
12. A sheet as claimed in claim 11, wherein the mass comprises plastics material.
13. A sheet as claimed in claim 11, wherein the mass comprises synthetic resin.
14. A sheet as claimed in any one of claims 11 to 13, wherein the mass is a cold-setting material.
15: A sheet as claimed in any one of claims 11 to 13, wherein the mass is a hot-setting material.
1 6. A sheet as claimed in any one of claims 1 to 10, comprising a plastics film and an adhesive substance causing said means to adhere to the film.
17. A sheet as claimed in claim 16, wherein the adhesive substance is in the form of a coating on the film, the adhesive substance having a smooth external surface and said means being embedded in the coating.
18. A sheet as claimed in any one of claims 1 to 10, comprising a material mass with said means embedded-therein, and a respective plastics film covering the mass at each of two opposite sides thereof.
19. A sheet as claimed in any one of the preceding claims in combination with a pane of glass, the sheet being connected to the pane by an adhesive substance.
20. A sheet substantially as hereinbefore described with reference to Figs. 1 and 5 of the accompanying drawings.
21. A sheet substantially as hereinbefore described with reference to any one of Figs. 2, 3, 4 and 6 of the accompanying drawings.
22. A method of producing a sheet as claimed in claim 1, comprising the steps of applying an adhesive substance to said means, contacting said means with an elongate plastics film to cause said means to be bonded thereto by the adhesive substance, and then covering tsaid means with a material mass.
23. A method of producing a sheet as claimed in claim 1, comprising the steps of placing said means on an elongate plastics film, coating said means and the film with a mass of transparent material to provide a smooth surface, and covering the mass with a further elongate plastics film.
24. A method of producing a sheet as claimed in claim 1, wherein said means comprises electrically conductive ink, the method comprising the step of drawing said line on an elongate plastics film.
25. A method of producing a sheet as claimed in claim 1, the method being substantially as hereinbefore described with reference to Fig. 7 of the accompanying drawings.
26. A method of producing a sheet as claimed in claim 1, the method being substantially as hereinbefore described with reference to Fig. 8 of the accompanying drawings.
GB08314579A 1983-02-18 1983-05-26 A sheet carrying a zigzag track e.g. a window heater Withdrawn GB2136257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833305590 DE3305590A1 (en) 1983-02-18 1983-02-18 PLASTIC FILM WITH A THREAD

Publications (2)

Publication Number Publication Date
GB8314579D0 GB8314579D0 (en) 1983-06-29
GB2136257A true GB2136257A (en) 1984-09-12

Family

ID=6191155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08314579A Withdrawn GB2136257A (en) 1983-02-18 1983-05-26 A sheet carrying a zigzag track e.g. a window heater

Country Status (2)

Country Link
DE (1) DE3305590A1 (en)
GB (1) GB2136257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362460A2 (en) * 1988-10-06 1990-04-11 Halcyon Waterbed Inc. Method and apparatus for making electrical heater pad

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20121744U1 (en) * 2001-09-26 2003-04-30 Freeglass Gmbh & Co Kg Plastics window panel e.g. for motor vehicle, has embedded electrical conductor wires imprinted in plastics layer by heating

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB747511A (en) * 1953-11-10 1956-04-04 Pierre Guerillot Flexible electric heating surfaces
GB807958A (en) * 1955-11-17 1959-01-28 Hermann Von Forster Electric heating element
GB882419A (en) * 1957-12-09 1961-11-15 Martindill Ltd Improvements in space heaters
GB1253738A (en) * 1968-02-06 1971-11-17 Tokai Rika Co Ltd An anti-theft locking device for an automobile
GB1288637A (en) * 1968-09-09 1972-09-13
GB1446433A (en) * 1972-09-28 1976-08-18 Northern Blankets Ltd Laminated fabrics
GB1569384A (en) * 1976-07-12 1980-06-11 Michelin & Cie Heating mat

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB747511A (en) * 1953-11-10 1956-04-04 Pierre Guerillot Flexible electric heating surfaces
GB807958A (en) * 1955-11-17 1959-01-28 Hermann Von Forster Electric heating element
GB882419A (en) * 1957-12-09 1961-11-15 Martindill Ltd Improvements in space heaters
GB1253738A (en) * 1968-02-06 1971-11-17 Tokai Rika Co Ltd An anti-theft locking device for an automobile
GB1288637A (en) * 1968-09-09 1972-09-13
GB1446433A (en) * 1972-09-28 1976-08-18 Northern Blankets Ltd Laminated fabrics
GB1569384A (en) * 1976-07-12 1980-06-11 Michelin & Cie Heating mat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362460A2 (en) * 1988-10-06 1990-04-11 Halcyon Waterbed Inc. Method and apparatus for making electrical heater pad
EP0362460A3 (en) * 1988-10-06 1992-01-15 Halcyon Waterbed Inc. Method and apparatus for making electrical heater pad

Also Published As

Publication number Publication date
DE3305590A1 (en) 1984-08-23
GB8314579D0 (en) 1983-06-29

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)