US3867245A - Electrical insulation - Google Patents
Electrical insulation Download PDFInfo
- Publication number
- US3867245A US3867245A US26211372A US3867245A US 3867245 A US3867245 A US 3867245A US 26211372 A US26211372 A US 26211372A US 3867245 A US3867245 A US 3867245A
- Authority
- US
- United States
- Prior art keywords
- electrical insulation
- layer
- resin
- superimposed
- paper
- 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
- 238000010292 electrical insulation Methods 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 229920006254 polymer film Polymers 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000011521 glass Substances 0.000 abstract description 20
- 239000004020 conductor Substances 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 7
- 239000010445 mica Substances 0.000 description 22
- 229910052618 mica group Inorganic materials 0.000 description 22
- 239000000463 material Substances 0.000 description 14
- -1 polyethylene Polymers 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001785 cerium compounds Chemical class 0.000 description 1
- 235000004879 dioscorea Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012260 resinous material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
-
- 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
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/06—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to a fibrous or filamentary layer
-
- 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
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/02—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica the layer of fibres or particles being impregnated or embedded in a plastic substance
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
- H01B3/422—Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds
- H01B3/423—Linear aromatic polyesters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- 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
- B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
- B32B2315/10—Mica
-
- 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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24132—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in different layers or components parallel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
- Y10T428/249926—Including paper layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/251—Mica
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
Definitions
- This invention relates to composite insulating material. More particularly, it relates to new and improved insulating material in sheet or tape form and more spetos, mica flake and other inorganic flake material such as glass flakes, using glass or other inorganic fabric as a reinforcing medium, are well known.
- such insulation containing woven fabric such as of glass cannot be conveniently wound on small conductors of the order of 50 mils in diameter without excessive fraying particularly at elevated temperatures where any organic bonding material would have been burned off.
- Asbestos acts in much the same way as glass fabric in that it tends to fray and disintegrate unless bonded with an inorganic heat-resistant material such as ceramic which then renders the conductors inflexible and the insulation friable and physically delicate.
- the use of mica flakes in such tapes is also limiting in that relatively small conductors cannot be conformably wound with the tape containing relatively large mica flakes.
- a principal object, therefore, of the present invention is to provide such readily conformable and flexible electrical insulation which will retain suitable electrical insulating and physical characteristics at normal and elevated temperatures.
- the present invention relates to electrical insulation in sheet or tape form which has a first or base layer of resin-impregnated mica paper, a second superimposed layer of a plurality of generally lengthwise disposed, flattened glass yarns, and optionally a third adherent layer of polymer or resin film.
- the material is particularly characterized in that it can be wrapped conformably on relatively small conductors or structures and will remain flexible and retain its electrical insulating qualities even at elevated temperatures at which any organic resin binder or adhesive or impregnant would have been incinerated.
- the mica paper or reconstituted mica which has been found to be useful in connection with the invention can be prepared by any of a number of processes including but not limited to those described in US. Pat. Nos.
- mica paper can be of any desired thickness commensurate with the particular application, it has been found that particularly in the wrapping of small conductors of the order of 50 mils, such mica paper having a thickness of about 1.5 to 2 mils is preferred.
- the glass yarn which is useful in connection with the invention ranges generally from about 0.5 mil in diameter to about 3 mils and is made up, typically, of bundles of filaments which are twisted in well known fashion to form the yarn. In actual use, the glass yarn is normally partially flattened as will be described hereinafter.
- any of a number of resinous or polymer films can be used including the various polyesters, polysulfones, polyethylene, polypropylene, polybutylene, polystyrene, polyvinyl acetal, polyacrylate, cellulose acetate, cellulose acetobutyrate, polyvinyl acetal, polycarbonate, and the like, such film materials being well known to those skilled in the art.
- any of a number of polymeric materials can be used to impregnate the mica paper layer and to adhere any overlying film to the substrate.
- organic polysiloxanes which are in and of themselves relatively high temperature resistant materials.
- Typical of those materials useful as an adhesive is General Electric organopolysiloxane SR-5l6 which is essentially a mixture of silanol stopped dimethylpolysiloxane having a viscosity of from about 1 million to 40 million cps at 45C and MO resin where M is (C a )s 112 Q is $10 and the ratio of M/Q is .55-.65/1
- a typically useful mica paper impregnating material is General Electric SR-23l which is a 60 percent solution in xylene of a mixture of silanol stopped dimethylpolysiloxane fluid having a viscosity of to 1000 cps at 25C MQ resin as above, and additional MQ resin where the ratio of M/Q is .9-l/l, along with a small amount of catalyst such as cerium compound.
- Mica paper having a thickness of about 1.7 mils was impregnated with the above SR-23l resin with a kiss coater and oven cured at a rate of about 10 ft/minute at C, the oven dwell time being about 5 minutes to give a final resin content ranging from about 1.5 to 4 percent by weight of the mica paper. It has been found that less than about 1.5 percent by weight of resin detracts from the water repellant characteristic of the mica paper which tends to disintegrate when exposed to moisture. On the other hand, over about 4 percent by weight of resin content tends to cause blocking of the mica paper when it is wound up.
- the impregnated mica paper is next kiss coated with the above described SR-5l6 adhesive as a 15 percent solution in toluene and treated in an oven at a temperature of from about 40C to 100C and preferably at about 70C to remove most of the solvent and provide a tacky surface.
- glass yarn having about 200 filaments each about 0.00035 inch in diameter is fed on to the tacky mica paper surface, the yarns being spaced to give about 18 to 20 yarns per inch, the composite material being immediately fed through nip rollers to flatten the glass yarns to the desired degree usually about one half the thickness.
- unflattened glass yarns can be used in certain applications, they tend to make the finished product relatively thick.
- the flattening disperses the glass filaments and provides more protection and reinforcement to the mica paper and with extreme flattening causes the glass filaments to cover essentially the entire surface of the mica paper and provides a high degree of resistance against puncture.
- the optional surface film of mil Mylar polyethylene terephthalate polyester may be first lightly treated with the above adhesive and then superimposed on the substrate using a nip roller or other convenient pressing means to provide the finished product shown in the drawing.
- a length of tape 1 with its first or base layer of micaceous paper 2 and reinforcing lengthwise disposed flattened glass yarns 3 is shown with the overlying resin film 4 partially removed.
- the mica paper or paper of similar material provides an electrical insulating barrier which is supported and reinforced conformably by the glass yarns.
- the overlying film of resinous material aids in conformably wrapping or taping the material particularlyv on small wires or conductors, this film as well as resin adhesives and impregnants being essentially or wholly removed if the insulated conductor is exposed to incinerating temperatures.
- the finished insulation in the form of tape an be used to conformably wind or insulate relatively small wires of the order of 50 mils in diameter which can then be wound into strands or cables.
- the insulation is suitable for use at ordinary temperatures with its dielectric strength of 1000 volts/mil, short time, step by step, using A inch electrodes, it is particularly suitable for use at elevated temperatures where the impregnating and adhesive material is substantially or wholly burned off or incinerated. It has been found that when so incinerated, strands or cables of such insulated wires substantially retain their flexibility and insulating qualities and are resistant to abrasion and physical punishment. This is as distinguished from prior art materials which, particularly at elevated temperatures, either lose their electrical insulating qualities or are inflexible or become severely deteriorated physically as well as electrically. The present insulation is particularly useful for thermocouple wires and the like.
- Electrical insulating tape having a layer of resin impregnated micaceous paper, superimposed thereon a plurality of flattened glass yarns disposed in spaced, generally lengthwise parallel fashion and superimposed thereon a layer of polymer film.
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Insulating Bodies (AREA)
- Laminated Bodies (AREA)
- Organic Insulating Materials (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
Description
Claims (4)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26211372 US3867245A (en) | 1972-06-12 | 1972-06-12 | Electrical insulation |
CH819273A CH558979A (en) | 1972-06-12 | 1973-06-06 | FLAT-SHAPED ELECTRIC COMPOSITE INSULATION ELEMENT. |
FR7320719A FR2188258B1 (en) | 1972-06-12 | 1973-06-07 | |
NL7307943A NL175563C (en) | 1972-06-12 | 1973-06-07 | LAYERED ELECTRICAL INSULATION TAPE BASED ON MICAPAPER. |
SE7308175A SE412974B (en) | 1972-06-12 | 1973-06-08 | ELECTRIC LAMINATED INSULATION TAPE |
DE2329532A DE2329532C3 (en) | 1972-06-12 | 1973-06-09 | Multi-layer flexible electrical tape or sheet |
ES415768A ES415768A1 (en) | 1972-06-12 | 1973-06-09 | Electrical isolation. (Machine-translation by Google Translate, not legally binding) |
IT2506173A IT988942B (en) | 1972-06-12 | 1973-06-12 | ELECTRICAL INSULATING MATERIAL |
GB2797873A GB1426575A (en) | 1972-06-12 | 1973-06-12 | Electrical insulation |
CA174,435A CA988405A (en) | 1972-06-12 | 1973-06-19 | Glass mica laminates |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26211372 US3867245A (en) | 1972-06-12 | 1972-06-12 | Electrical insulation |
CA174,435A CA988405A (en) | 1972-06-12 | 1973-06-19 | Glass mica laminates |
Publications (1)
Publication Number | Publication Date |
---|---|
US3867245A true US3867245A (en) | 1975-02-18 |
Family
ID=25667296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US26211372 Expired - Lifetime US3867245A (en) | 1972-06-12 | 1972-06-12 | Electrical insulation |
Country Status (8)
Country | Link |
---|---|
US (1) | US3867245A (en) |
CA (1) | CA988405A (en) |
CH (1) | CH558979A (en) |
DE (1) | DE2329532C3 (en) |
FR (1) | FR2188258B1 (en) |
GB (1) | GB1426575A (en) |
NL (1) | NL175563C (en) |
SE (1) | SE412974B (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4091139A (en) * | 1975-09-17 | 1978-05-23 | Westinghouse Electric Corp. | Semiconductor binding tape and an electrical member wrapped therewith |
US4158078A (en) * | 1977-06-10 | 1979-06-12 | Huebner Bros. Of Canada Ltd. | Heat strip or panel |
US4265953A (en) * | 1979-03-07 | 1981-05-05 | Minnesota Mining And Manufacturing Company | Intumescent stressed skin composite material |
US4286010A (en) * | 1979-10-05 | 1981-08-25 | Essex Group, Inc. | Insulating mica paper and tapes thereof |
US4307145A (en) * | 1981-02-11 | 1981-12-22 | Goldman Daniel S | Decorative fabric and method of making the same |
US4381327A (en) * | 1980-10-06 | 1983-04-26 | Dennison Manufacturing Company | Mica-foil laminations |
US4407876A (en) * | 1979-08-08 | 1983-10-04 | Malcolm Otty | Electrical insulating stitch bonded material |
US4454192A (en) * | 1981-11-16 | 1984-06-12 | Sugawara Industrial Co. | Pressure sensitive adhesive tape |
US4769276A (en) * | 1985-12-13 | 1988-09-06 | Alsthom, S.A. | Mica-coated electrically insulating and fire-proofing adhesive tape especially suitable for electrical or optical fiber cable |
US4868035A (en) * | 1988-05-16 | 1989-09-19 | Weinberg Martin J | Electrical insulating materials made partly or wholly of polyester film |
US5118550A (en) * | 1988-12-13 | 1992-06-02 | Rhone Poulenc Fibres | Substrate based on a nonwoven sheet made of chemical textile |
US5181562A (en) * | 1991-03-15 | 1993-01-26 | Kabushiki Kaisha Toshiba | Heat exchanger element and method of making the same |
US5205037A (en) * | 1991-03-15 | 1993-04-27 | Kabushiki Kaisha Toshiba | Method of making a heat exchange element |
WO2008144800A1 (en) * | 2007-05-25 | 2008-12-04 | Jason Andrew Hopkins | Manufacturing process for thermoelectric generator |
US10199136B2 (en) * | 2014-01-29 | 2019-02-05 | Mitsubishi Electric Corporation | Insulating tape and production method thereof, stator coil and production method thereof, and rotating electric machine |
US10942070B2 (en) * | 2018-05-21 | 2021-03-09 | Haesung Ds Co., Ltd. | Sensor unit, temperature sensor including the same, method of manufacturing the sensor unit, and method of manufacturing the temperature sensor |
US11791684B2 (en) | 2020-07-02 | 2023-10-17 | Ge Aviation Systems Llc | Method and system for electrically insulating portions of an electric machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2588711A1 (en) * | 1985-10-11 | 1987-04-17 | Cableco Sa | Plate for induction-heated cooking hob and cooking pan usable with such a hob |
JPH07264787A (en) * | 1994-03-18 | 1995-10-13 | Hitachi Ltd | Composite thin film insulator, manufacture thereof rotary electric machine using the same insulator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3019286A (en) * | 1958-06-19 | 1962-01-30 | Asea Ab | Insulated electrical conductors and process for producing same |
US3523061A (en) * | 1969-06-20 | 1970-08-04 | Minnesota Mining & Mfg | Porous sheet materials of mica and unfused staple fibers |
US3560320A (en) * | 1967-10-05 | 1971-02-02 | Gen Electric | Insulating material |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1089026B (en) * | 1958-06-19 | 1960-09-15 | Asea Ab | Insulation for high voltage conductors |
JPS4323029B1 (en) * | 1962-03-27 | 1968-10-03 | ||
CH416771A (en) * | 1963-03-14 | 1966-07-15 | Schweizerische Isolawerke | Supple wrapping tape |
DE1241509B (en) * | 1965-02-27 | 1967-06-01 | Siemens Ag | Electric Isolation |
US3539438A (en) * | 1967-06-12 | 1970-11-10 | Minnesota Mining & Mfg | Electrically insulative polymer impregnated,mica-paper tape |
-
1972
- 1972-06-12 US US26211372 patent/US3867245A/en not_active Expired - Lifetime
-
1973
- 1973-06-06 CH CH819273A patent/CH558979A/en not_active IP Right Cessation
- 1973-06-07 NL NL7307943A patent/NL175563C/en not_active IP Right Cessation
- 1973-06-07 FR FR7320719A patent/FR2188258B1/fr not_active Expired
- 1973-06-08 SE SE7308175A patent/SE412974B/en unknown
- 1973-06-09 DE DE2329532A patent/DE2329532C3/en not_active Expired
- 1973-06-12 GB GB2797873A patent/GB1426575A/en not_active Expired
- 1973-06-19 CA CA174,435A patent/CA988405A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3019286A (en) * | 1958-06-19 | 1962-01-30 | Asea Ab | Insulated electrical conductors and process for producing same |
US3560320A (en) * | 1967-10-05 | 1971-02-02 | Gen Electric | Insulating material |
US3523061A (en) * | 1969-06-20 | 1970-08-04 | Minnesota Mining & Mfg | Porous sheet materials of mica and unfused staple fibers |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4091139A (en) * | 1975-09-17 | 1978-05-23 | Westinghouse Electric Corp. | Semiconductor binding tape and an electrical member wrapped therewith |
US4158078A (en) * | 1977-06-10 | 1979-06-12 | Huebner Bros. Of Canada Ltd. | Heat strip or panel |
US4265953A (en) * | 1979-03-07 | 1981-05-05 | Minnesota Mining And Manufacturing Company | Intumescent stressed skin composite material |
US4407876A (en) * | 1979-08-08 | 1983-10-04 | Malcolm Otty | Electrical insulating stitch bonded material |
DE3049940C2 (en) * | 1979-10-05 | 1988-01-21 | Essex Group, Inc., Fort Wayne, Ind., Us | |
US4286010A (en) * | 1979-10-05 | 1981-08-25 | Essex Group, Inc. | Insulating mica paper and tapes thereof |
US4381327A (en) * | 1980-10-06 | 1983-04-26 | Dennison Manufacturing Company | Mica-foil laminations |
US4307145A (en) * | 1981-02-11 | 1981-12-22 | Goldman Daniel S | Decorative fabric and method of making the same |
US4454192A (en) * | 1981-11-16 | 1984-06-12 | Sugawara Industrial Co. | Pressure sensitive adhesive tape |
US4769276A (en) * | 1985-12-13 | 1988-09-06 | Alsthom, S.A. | Mica-coated electrically insulating and fire-proofing adhesive tape especially suitable for electrical or optical fiber cable |
US4868035A (en) * | 1988-05-16 | 1989-09-19 | Weinberg Martin J | Electrical insulating materials made partly or wholly of polyester film |
US5118550A (en) * | 1988-12-13 | 1992-06-02 | Rhone Poulenc Fibres | Substrate based on a nonwoven sheet made of chemical textile |
US5181562A (en) * | 1991-03-15 | 1993-01-26 | Kabushiki Kaisha Toshiba | Heat exchanger element and method of making the same |
US5205037A (en) * | 1991-03-15 | 1993-04-27 | Kabushiki Kaisha Toshiba | Method of making a heat exchange element |
WO2008144800A1 (en) * | 2007-05-25 | 2008-12-04 | Jason Andrew Hopkins | Manufacturing process for thermoelectric generator |
US10199136B2 (en) * | 2014-01-29 | 2019-02-05 | Mitsubishi Electric Corporation | Insulating tape and production method thereof, stator coil and production method thereof, and rotating electric machine |
US10942070B2 (en) * | 2018-05-21 | 2021-03-09 | Haesung Ds Co., Ltd. | Sensor unit, temperature sensor including the same, method of manufacturing the sensor unit, and method of manufacturing the temperature sensor |
US11791684B2 (en) | 2020-07-02 | 2023-10-17 | Ge Aviation Systems Llc | Method and system for electrically insulating portions of an electric machine |
Also Published As
Publication number | Publication date |
---|---|
NL175563B (en) | 1984-06-18 |
CA988405A (en) | 1976-05-04 |
FR2188258B1 (en) | 1979-01-26 |
NL175563C (en) | 1984-11-16 |
CH558979A (en) | 1975-02-14 |
DE2329532A1 (en) | 1974-01-03 |
DE2329532C3 (en) | 1982-10-07 |
DE2329532B2 (en) | 1981-01-15 |
FR2188258A1 (en) | 1974-01-18 |
SE412974B (en) | 1980-03-24 |
GB1426575A (en) | 1976-03-03 |
NL7307943A (en) | 1973-12-14 |
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Legal Events
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Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
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Owner name: INSULATING MATERIALS INCORPORATED, ONE CAMPBELL RD Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GENERAL ELECTRIC COMPANY;REEL/FRAME:005500/0044 Effective date: 19880524 |
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Owner name: CHEMICAL BANK, 41 STATE STREET, ALBANY, NEW YORK 1 Free format text: SECURITY INTEREST;ASSIGNOR:INSULATING MATERIALS INCORPORATED;REEL/FRAME:004886/0633 Effective date: 19880318 Owner name: CHEMICAL BANK,NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:INSULATING MATERIALS INCORPORATED;REEL/FRAME:004886/0633 Effective date: 19880318 |
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Owner name: INSULATING MATERIALS, INCORPORATED, NEW YORK Free format text: RELEASE BY SECURED PARTY OF THE SECURITY AGREEMENT RECORDED ON JUNE 10, 1988, AT REEL 4886, FRAMES 633-649.;ASSIGNOR:CHMEICAL BANK;REEL/FRAME:005743/0938 Effective date: 19910506 |
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Owner name: NORSTAR BANK OF UPSTATE NY Free format text: SECURITY INTEREST;ASSIGNOR:INSULATING MATERIALS INCORPORATED, A CORP. OF NY;REEL/FRAME:005774/0735 Effective date: 19910514 |