US2703854A - Electrical coil - Google Patents

Electrical coil Download PDF

Info

Publication number
US2703854A
US2703854A US29377A US2937748A US2703854A US 2703854 A US2703854 A US 2703854A US 29377 A US29377 A US 29377A US 2937748 A US2937748 A US 2937748A US 2703854 A US2703854 A US 2703854A
Authority
US
United States
Prior art keywords
strip
conductors
label
winding
electrical coil
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
Application number
US29377A
Inventor
Eisler Paul
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.)
Hermoplast Ltd
Original Assignee
Hermoplast Ltd
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
Priority claimed from GB174943A external-priority patent/GB639111A/en
Priority claimed from US520991A external-priority patent/US2441960A/en
Priority claimed from US11798A external-priority patent/US2587568A/en
Application filed by Hermoplast Ltd filed Critical Hermoplast Ltd
Priority to US29377A priority Critical patent/US2703854A/en
Application granted granted Critical
Publication of US2703854A publication Critical patent/US2703854A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0393—Flexible materials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
    • Y10T156/103—Encasing or enveloping the configured lamina
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1034—Overedge bending of lamina about edges of sheetlike base
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1043—Subsequent to assembly

Definitions

  • Patent No. 2,441,960 dated May 25, 1949. Divided and this application May 26, 1948, Serial No. 29,377.
  • the present invention relates to electrical coils or windings, and in particular to windings comprising a plurality of electric conductors formed upon or secured to a strip of insulating material.
  • the invention provides for the transformation of a plurality of electric conductors secured to a strip of insulating material, into an electric winding or coil.
  • a more specific object of the invention is to provide a unique and highly versatile connecting label which allows the insulation strip beating the conductor to be transformed into an electrical coil.
  • Fig. 1 is a plan view of a connecting label according to the invention and of two end sections of a strip of insulating material bearing a plurality of conductors, and
  • Fig. 2 is a fragmentary sectional view of the label and of one of the end sections, the label and the end section being in the position for final assembly.
  • Fig. 1 shows the two ends 1 and 2 of a long strip of flexible insulation 3 bearing a pattern of parallel metallic lines 4 which can be produced in any desirable numbers by the printed circuit techniques hereinbefore referred to. There are no end connections between the lines.
  • This pattern is here used as the basis for making a helical winding to serve as an inductance, or as the winding of a transformer or for like purposes. After its production the strip is wound upon a former or upon a core. It would ordinarily be a very 2,703,854 Patented Mar. 8, 1955 tedious operation to wind a wire winding upon a closed core such as is often used in a transformer, perhaps involving threading the bobbin through the core some thousands of times.
  • the strip of Figure 1 may have hundreds of conductors side by side, it will be understood that thousands of turns of wire may be wound about a core by threading such a strip through it only a few times. However, the winding of the strip on the core in this manner only leaves the core winding with, say a thousand separate conductors each encircling the core a few times. It remains to join these conductors in series, which involves, say, joining the end of the lowermost conductor in the end 1 of the strip to the uppermost in the end 2 and so on.
  • the label is provided with lead-in and lead-out terminals 13 and 13'.
  • the label In order that this label may be accurately applied to the ends 1, 2, as is necessary considering the close spacing of the conductors, the label not only carries the conductors but is embossed, so that the ends of its conductors lie in grooves 9.
  • Figure 2 shows the embossed part of the label superimposed upon the end 2 of the strip.
  • embossed parts of the label will fit between the conductors 4 of the strip and thereby cause the conductors of strip and label to be accurately superposed.
  • a soldered joint is made by heat and pressure.
  • the flaps 10 of the label may be coated with adhesive and folded around and made adherent to the back of the ends 1 and 2. Dotted lines 11 and 12 indicate the fold lines.
  • An electric winding comprising a length of flexible sheet insulating material, a plurality of separate sheet metal strips adherent to the face thereof and extending lengthwise thereof, an adhesive insulating label securing together the ends of said insulating material, so forming a closed loop, and metallic members on said label each having its ends spaced laterally in relation to said strips, said members contacting with and so interconnecting the ends of two different strips in an ordered succession thereby to connect said strips into at least one winding comprising a plurality of turns.

Description

March 8, 1955 P. EISLER 2,703,854
' ELECTRICAL con.
Original Filed Feb. 3, 1944 3-msuLA'Trou 6- INSULATION FlG. 'l
IN VEN TOR. PAUL EISLER ATTORNEY United States Patent O ELECTRICAL COIL Paul Eisler, London, England, assignor of one-half to Hermoplast Limited, London, England, a corporation of Great Britain Original application February 3, 1944, Serial No. 520,991,
now Patent No. 2,441,960, dated May 25, 1949. Divided and this application May 26, 1948, Serial No. 29,377.
1 Claim. (Cl. 336-200) The present invention relates to electrical coils or windings, and in particular to windings comprising a plurality of electric conductors formed upon or secured to a strip of insulating material.
Recently developed methods of manufacturing the conductive metallic elements of electrical and electronic equipment, such as described in Patents 2,441,960 and 2,587,568 have markedly altered the heretofore conventional form of such elements. Ordinary wiring, for example, is being replaced by electrically conductive narrow strips or lines formed upon and aflixed to an insulating base by what is now commonly known as printed circuit techniques, the products produced thereby, being referred to as printed circuit products.
Broadly speaking, the invention provides for the transformation of a plurality of electric conductors secured to a strip of insulating material, into an electric winding or coil.
Accordingly, it is a primary object of the invention to provide a means by which strips of insulating sheet material bearing a plurality of conductors may be utilized to form electrical windings or coils of the type employed for instance in transformers, inductances, and other electrical equipment.
It is a further object of this invention to provide a means for joining said conductors after the strip has been wound.
A more specific object of the invention is to provide a unique and highly versatile connecting label which allows the insulation strip beating the conductor to be transformed into an electrical coil.
In the accompanying drawing a now preferred, embodiment of the invention is shown by way of illustration and not by way of limitation.
In the drawing:
Fig. 1 is a plan view of a connecting label according to the invention and of two end sections of a strip of insulating material bearing a plurality of conductors, and
Fig. 2 is a fragmentary sectional view of the label and of one of the end sections, the label and the end section being in the position for final assembly.
Fig. 1 shows the two ends 1 and 2 of a long strip of flexible insulation 3 bearing a pattern of parallel metallic lines 4 which can be produced in any desirable numbers by the printed circuit techniques hereinbefore referred to. There are no end connections between the lines. This pattern is here used as the basis for making a helical winding to serve as an inductance, or as the winding of a transformer or for like purposes. After its production the strip is wound upon a former or upon a core. It would ordinarily be a very 2,703,854 Patented Mar. 8, 1955 tedious operation to wind a wire winding upon a closed core such as is often used in a transformer, perhaps involving threading the bobbin through the core some thousands of times. But when it is remembered that the strip of Figure 1 may have hundreds of conductors side by side, it will be understood that thousands of turns of wire may be wound about a core by threading such a strip through it only a few times. However, the winding of the strip on the core in this manner only leaves the core winding with, say a thousand separate conductors each encircling the core a few times. It remains to join these conductors in series, which involves, say, joining the end of the lowermost conductor in the end 1 of the strip to the uppermost in the end 2 and so on. This is conveniently done by the aid of a label 5 of transparent insulating material 6 bearing a pattern of parallel conductors 4 of similar spacing to the conductors of the strip ends 1 and 2 insulated at their middle parts 7, by an insulating substance coated thereon, but bare and solder-painted at their ends 8. The label is provided with lead-in and lead-out terminals 13 and 13'. In order that this label may be accurately applied to the ends 1, 2, as is necessary considering the close spacing of the conductors, the label not only carries the conductors but is embossed, so that the ends of its conductors lie in grooves 9. Figure 2 shows the embossed part of the label superimposed upon the end 2 of the strip. It will be seen that the embossed parts of the label will fit between the conductors 4 of the strip and thereby cause the conductors of strip and label to be accurately superposed. A soldered joint is made by heat and pressure. The flaps 10 of the label may be coated with adhesive and folded around and made adherent to the back of the ends 1 and 2. Dotted lines 11 and 12 indicate the fold lines.
This application is a division of application Ser. No. 520,991, filed February 3, 1944, now Patent 2,441,960, issued May 25, 1949.
I claim:
An electric winding comprising a length of flexible sheet insulating material, a plurality of separate sheet metal strips adherent to the face thereof and extending lengthwise thereof, an adhesive insulating label securing together the ends of said insulating material, so forming a closed loop, and metallic members on said label each having its ends spaced laterally in relation to said strips, said members contacting with and so interconnecting the ends of two different strips in an ordered succession thereby to connect said strips into at least one winding comprising a plurality of turns.
References Cited in the file of this patent UNITED STATES PATENTS 460,725 Markle Oct. 6, 1891 1,334,276 Adams Mar. 23, 1920 1,563,731 Ducas Dec. 1, 1925 1,647,474 Seymour Nov. 1, 1927 1,718,993 Wermine July 2, 1929 1,794,831 Caruso Mar. 3, 1931 1,939,130 Mills Dec. 12, 1933 2,343,306 Lear Mar. 7, 1944 2,370,846 Deakin Mar. 6, 1945 2,399,753 McLarn May 7, 1946 2,427,144 Jansen Sept. 9, 1947 2,450,974 Mallina Oct. 12, 1948 FOREIGN PATENTS 327,356 Great Britain Apr. 3, 1930
US29377A 1943-02-02 1948-05-26 Electrical coil Expired - Lifetime US2703854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US29377A US2703854A (en) 1943-02-02 1948-05-26 Electrical coil

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB174943A GB639111A (en) 1943-02-02 1943-02-02 Manufacture of electric circuits and circuit components
US520991A US2441960A (en) 1943-02-02 1944-02-03 Manufacture of electric circuit components
US11798A US2587568A (en) 1943-02-02 1948-02-27 Manufacture of electric circuit components
US29377A US2703854A (en) 1943-02-02 1948-05-26 Electrical coil

Publications (1)

Publication Number Publication Date
US2703854A true US2703854A (en) 1955-03-08

Family

ID=32234267

Family Applications (1)

Application Number Title Priority Date Filing Date
US29377A Expired - Lifetime US2703854A (en) 1943-02-02 1948-05-26 Electrical coil

Country Status (1)

Country Link
US (1) US2703854A (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881404A (en) * 1952-06-28 1959-04-07 Lawrence J Kamm Multiple electrical connector with yieldable contacts
US2886880A (en) * 1952-05-26 1959-05-19 Hermoplast Ltd Method of producing electric circuit components
US2897254A (en) * 1956-06-21 1959-07-28 Ibm Self guiding arcuate set electric cable
DE1069228B (en) * 1959-11-19 FUBA Fabrikation funktechnischer Bauteile, Hans Kolbe a Co., Bad SaIzdetlfurth High-frequency coil and oscillation creas, filter and crossover
US2937351A (en) * 1956-02-13 1960-05-17 Palmer H Craig Magnetic amplifier
US2952002A (en) * 1958-09-19 1960-09-06 Angele Wilhelm Electrical connector for flat cables
US2963538A (en) * 1957-04-11 1960-12-06 Sanders Associates Inc Flat cables
US2968016A (en) * 1958-09-19 1961-01-10 Angele Wilhelm Blade connector
US2978683A (en) * 1955-12-22 1961-04-04 Burroughs Corp Information storage device
US3011247A (en) * 1954-01-15 1961-12-05 Visseaux S A J Method of manufacturing printed electrical windings
US3046358A (en) * 1955-12-23 1962-07-24 Frank A Comerci Non-magnetic pickup loop for making absolute measurement of signal strength on magnetic recordings
US3080541A (en) * 1963-03-05 parker
US3097036A (en) * 1957-01-08 1963-07-09 Burndy Corp Flexible multiple connector
US3155797A (en) * 1958-10-10 1964-11-03 Avco Corp Destructible fuse elements
US3289141A (en) * 1963-07-22 1966-11-29 Burroughs Corp Electrical connector for printed circuit boards
US3332048A (en) * 1965-08-24 1967-07-18 Coilcraft Inc Mount for circuit elements
US3396230A (en) * 1966-07-06 1968-08-06 Thomas & Betts Corp Laminated bus assemblies
US3421961A (en) * 1966-01-10 1969-01-14 Ncr Co Method of making high density electrical connections
US3670277A (en) * 1969-12-22 1972-06-13 Gen Electric Unitary insulation and termination member
US3805213A (en) * 1972-03-22 1974-04-16 Data General Corp Flexible circuit connectors
US4029390A (en) * 1974-12-23 1977-06-14 Bell Telephone Laboratories, Incorporated Optical fiber group splicing technique and apparatus employing unique foldable holder
US4289364A (en) * 1979-10-22 1981-09-15 Control Data Corporation Plasma display panel flexible circuit connection
US4417170A (en) * 1981-11-23 1983-11-22 Imperial Clevite Inc. Flexible circuit interconnect for piezoelectric element
US4689593A (en) * 1984-09-01 1987-08-25 The Marconi Company Limited Transformer with balanced transmission lines
US4879511A (en) * 1987-08-20 1989-11-07 Liberty Technology Center, Inc. Flat, multiconductor cable coil device for in situ detecting of axial motion of a generally cylindrical member
US4879433A (en) * 1988-10-31 1989-11-07 International Business Machines Corporation Parallel cable bus with internal path length compensation
US5093543A (en) * 1990-10-26 1992-03-03 Electrical Insulation Suppliers, Inc. Motor phase insulation article and method of making the same
US5262590A (en) * 1992-04-27 1993-11-16 Sheldahl, Inc. Impedance controlled flexible circuits with fold-over shields
US5561410A (en) * 1993-12-13 1996-10-01 Nec Corporation Multi-layer coil using electroconductive flexible sheets
US20100019611A1 (en) * 2008-07-22 2010-01-28 Dayton-Phoenix Group, Inc. Motor/generator phase insulation article and method for manufacturing
US20150068796A1 (en) * 2013-09-06 2015-03-12 Gigalane Co., Ltd. Printed circuit board including contact pad

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460725A (en) * 1891-10-06 Insulation for electric wires
US1334276A (en) * 1916-03-31 1920-03-23 Western Electric Co Contact-terminal bank
US1563731A (en) * 1925-03-02 1925-12-01 Ducas Charles Electrical apparatus and method of manufacturing the same
US1647474A (en) * 1923-10-25 1927-11-01 Frederick W Seymour Variable pathway
US1718993A (en) * 1927-09-09 1929-07-02 Belden Mfg Co Wiring panel for electrical apparatus
GB327356A (en) * 1929-07-06 1930-04-03 Henry Ambrose Pudsay Littledal Improvements in and relating to electric inductances and transformers
US1794831A (en) * 1929-01-19 1931-03-03 Lionel Corp Multiple conductor strip and method of making the same
US1939130A (en) * 1931-04-14 1933-12-12 Donald H Mills Radio base construction
US2343306A (en) * 1939-12-14 1944-03-07 Lear Avia Inc Loop antenna system
US2370846A (en) * 1942-02-05 1945-03-06 Int Standard Electric Corp Ribbon cable for terminal banks
US2399753A (en) * 1944-03-13 1946-05-07 Int Standard Electric Corp Multiple connections for electrical apparatus
US2427144A (en) * 1936-11-23 1947-09-09 Jansen Franciscus Jo Wilhelmus Mechanical connection for electrical circuits
US2450974A (en) * 1942-06-19 1948-10-12 Bell Telephone Labor Inc Method of making multiple cables for terminal banks

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460725A (en) * 1891-10-06 Insulation for electric wires
US1334276A (en) * 1916-03-31 1920-03-23 Western Electric Co Contact-terminal bank
US1647474A (en) * 1923-10-25 1927-11-01 Frederick W Seymour Variable pathway
US1563731A (en) * 1925-03-02 1925-12-01 Ducas Charles Electrical apparatus and method of manufacturing the same
US1718993A (en) * 1927-09-09 1929-07-02 Belden Mfg Co Wiring panel for electrical apparatus
US1794831A (en) * 1929-01-19 1931-03-03 Lionel Corp Multiple conductor strip and method of making the same
GB327356A (en) * 1929-07-06 1930-04-03 Henry Ambrose Pudsay Littledal Improvements in and relating to electric inductances and transformers
US1939130A (en) * 1931-04-14 1933-12-12 Donald H Mills Radio base construction
US2427144A (en) * 1936-11-23 1947-09-09 Jansen Franciscus Jo Wilhelmus Mechanical connection for electrical circuits
US2343306A (en) * 1939-12-14 1944-03-07 Lear Avia Inc Loop antenna system
US2370846A (en) * 1942-02-05 1945-03-06 Int Standard Electric Corp Ribbon cable for terminal banks
US2450974A (en) * 1942-06-19 1948-10-12 Bell Telephone Labor Inc Method of making multiple cables for terminal banks
US2399753A (en) * 1944-03-13 1946-05-07 Int Standard Electric Corp Multiple connections for electrical apparatus

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069228B (en) * 1959-11-19 FUBA Fabrikation funktechnischer Bauteile, Hans Kolbe a Co., Bad SaIzdetlfurth High-frequency coil and oscillation creas, filter and crossover
US3080541A (en) * 1963-03-05 parker
US2886880A (en) * 1952-05-26 1959-05-19 Hermoplast Ltd Method of producing electric circuit components
US2881404A (en) * 1952-06-28 1959-04-07 Lawrence J Kamm Multiple electrical connector with yieldable contacts
US3011247A (en) * 1954-01-15 1961-12-05 Visseaux S A J Method of manufacturing printed electrical windings
US2978683A (en) * 1955-12-22 1961-04-04 Burroughs Corp Information storage device
US3046358A (en) * 1955-12-23 1962-07-24 Frank A Comerci Non-magnetic pickup loop for making absolute measurement of signal strength on magnetic recordings
US2937351A (en) * 1956-02-13 1960-05-17 Palmer H Craig Magnetic amplifier
US2897254A (en) * 1956-06-21 1959-07-28 Ibm Self guiding arcuate set electric cable
US3097036A (en) * 1957-01-08 1963-07-09 Burndy Corp Flexible multiple connector
US2963538A (en) * 1957-04-11 1960-12-06 Sanders Associates Inc Flat cables
US2968016A (en) * 1958-09-19 1961-01-10 Angele Wilhelm Blade connector
US2952002A (en) * 1958-09-19 1960-09-06 Angele Wilhelm Electrical connector for flat cables
US3155797A (en) * 1958-10-10 1964-11-03 Avco Corp Destructible fuse elements
US3289141A (en) * 1963-07-22 1966-11-29 Burroughs Corp Electrical connector for printed circuit boards
US3332048A (en) * 1965-08-24 1967-07-18 Coilcraft Inc Mount for circuit elements
US3421961A (en) * 1966-01-10 1969-01-14 Ncr Co Method of making high density electrical connections
US3396230A (en) * 1966-07-06 1968-08-06 Thomas & Betts Corp Laminated bus assemblies
US3670277A (en) * 1969-12-22 1972-06-13 Gen Electric Unitary insulation and termination member
US3805213A (en) * 1972-03-22 1974-04-16 Data General Corp Flexible circuit connectors
US4029390A (en) * 1974-12-23 1977-06-14 Bell Telephone Laboratories, Incorporated Optical fiber group splicing technique and apparatus employing unique foldable holder
US4289364A (en) * 1979-10-22 1981-09-15 Control Data Corporation Plasma display panel flexible circuit connection
US4417170A (en) * 1981-11-23 1983-11-22 Imperial Clevite Inc. Flexible circuit interconnect for piezoelectric element
US4689593A (en) * 1984-09-01 1987-08-25 The Marconi Company Limited Transformer with balanced transmission lines
US4879511A (en) * 1987-08-20 1989-11-07 Liberty Technology Center, Inc. Flat, multiconductor cable coil device for in situ detecting of axial motion of a generally cylindrical member
US4879433A (en) * 1988-10-31 1989-11-07 International Business Machines Corporation Parallel cable bus with internal path length compensation
US5093543A (en) * 1990-10-26 1992-03-03 Electrical Insulation Suppliers, Inc. Motor phase insulation article and method of making the same
US5262590A (en) * 1992-04-27 1993-11-16 Sheldahl, Inc. Impedance controlled flexible circuits with fold-over shields
US5561410A (en) * 1993-12-13 1996-10-01 Nec Corporation Multi-layer coil using electroconductive flexible sheets
US20100019611A1 (en) * 2008-07-22 2010-01-28 Dayton-Phoenix Group, Inc. Motor/generator phase insulation article and method for manufacturing
US8264116B2 (en) 2008-07-22 2012-09-11 Dayton-Phoenix Group, Inc. Motor/generator phase insulation article and method for manufacturing
US20150068796A1 (en) * 2013-09-06 2015-03-12 Gigalane Co., Ltd. Printed circuit board including contact pad
US9532446B2 (en) * 2013-09-06 2016-12-27 Gigalane Co., Ltd. Printed circuit board including linking extended contact pad

Similar Documents

Publication Publication Date Title
US2703854A (en) Electrical coil
US3002260A (en) shortt etal
US2943966A (en) Printed electrical circuits
US2874360A (en) Eisler
US3246272A (en) Potted electric coil and hair-like lead wire assembly
US3153216A (en) Winding arrangement for electrical inductive apparatus
US2535554A (en) Close-coupled electrical transformer
US3327266A (en) High voltage winding for electric transformers
US2464820A (en) Multiple coil wound resistor
US2159269A (en) Lead locating means and method of applying same
US2223737A (en) Shield for electrical apparatus
US2633481A (en) Terminal board for multitap transformer construction
US2166841A (en) Coil
US2666254A (en) Method of manufacturing electrical windings
US2310684A (en) Inductive winding
US2488325A (en) Electrical winding
US2374018A (en) Coil winding
US2785351A (en) Electrical capacitors
US3231798A (en) Low inductance capacitor
US2892162A (en) Electromagnetic delay lines
US2154070A (en) Electrical coil
US2359544A (en) Insulated coil
US3238480A (en) Printed circuit electrical windings and inductive apparatus using such windings
CN102693825A (en) Manufacturing method for inductor
US2888654A (en) Transformers