GB952401A - Method of making self-supporting coils and mandrel therefor - Google Patents
Method of making self-supporting coils and mandrel thereforInfo
- Publication number
- GB952401A GB952401A GB46360/61A GB4636061A GB952401A GB 952401 A GB952401 A GB 952401A GB 46360/61 A GB46360/61 A GB 46360/61A GB 4636061 A GB4636061 A GB 4636061A GB 952401 A GB952401 A GB 952401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- coil
- wire
- land
- adhesive
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000000853 adhesive Substances 0.000 abstract 4
- 230000001070 adhesive effect Effects 0.000 abstract 4
- -1 polyethylene Polymers 0.000 abstract 4
- 238000004804 winding Methods 0.000 abstract 3
- OMBVEVHRIQULKW-DNQXCXABSA-M (3r,5r)-7-[3-(4-fluorophenyl)-8-oxo-7-phenyl-1-propan-2-yl-5,6-dihydro-4h-pyrrolo[2,3-c]azepin-2-yl]-3,5-dihydroxyheptanoate Chemical compound O=C1C=2N(C(C)C)C(CC[C@@H](O)C[C@@H](O)CC([O-])=O)=C(C=3C=CC(F)=CC=3)C=2CCCN1C1=CC=CC=C1 OMBVEVHRIQULKW-DNQXCXABSA-M 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 229940126540 compound 41 Drugs 0.000 abstract 2
- 239000004677 Nylon Substances 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 239000004721 Polyphenylene oxide Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 abstract 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 229920001778 nylon Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 abstract 1
- 239000004417 polycarbonate Substances 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 abstract 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 abstract 1
- 229920000570 polyether Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H55/00—Wound packages of filamentary material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49789—Obtaining plural product pieces from unitary workpiece
- Y10T29/4979—Breaking through weakened portion
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4981—Utilizing transitory attached element or associated separate material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
952,401. Making coils. INDUSTRIAL RESEARCH PRODUCTS Inc. Dec. 27, 1961 [Dec. 27, 1960], No. 46360/61. Headings B3A and B3E. [Also in Division B5] A method of making a self-supporting coil comprises the steps of winding wire on a mandrel and then pulling the mandrel out of the coil by a force acting axially of the coil for a time and with a force sufficient to contract the walls of the mandrel away from the coil to provide an annular clearance throughout the length of the coil tunnel. A plastic mandrel 10 is formed by injection moulding to the shape of blocks 12, 14, connected by a land 16, having a central transverse stratum of slightly less tensile strength than the rest of the land 16. The mandrel may be formed by casting or machining. The block 12 is then clamped between jaws 24, 26, Fig. 5, of a winding machine and wire 17 is wound around the land 16 and an adhesive 28 which does not adhere to the mandrel is applied thereto. The wire coil so formed may then be pressed between flat surfaces and excess adhesive removed. Heavy wire leads 30, 32, Fig. 7, may then be soldered to the ends of the wire of the coil and lie along grooves 38, 40 or holes in the block 14. The mandrel and coil are then mounted in a jig, 37, Fig. 9, and coated with an imbedment compound 41, Fig. 13, which may be the same as the adhesive 28. The adhesive 28 and imbedment compound 41 is cured or set and the coil and mandrel stripped from the jig 37. The block portions 12 and 14 are then clamped in jaws which pull apart so as first to stretch the land 16 of the mandrel and cause it to contract away from the wire windings and then to cause the mandrel to break into two at 54. The mandrel may be of polyethylene, acetyl, acrylic, chlorinated polyether, nylon, polypropylene, styrene, polycarbonate, polychlorotrifluoroethylene, fluorocarbon, vinyl plastic, or polytetrafluoroethylene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78743A US3182384A (en) | 1960-12-27 | 1960-12-27 | Method of making self-supporting coils and mandrel therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB952401A true GB952401A (en) | 1964-03-18 |
Family
ID=22145957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46360/61A Expired GB952401A (en) | 1960-12-27 | 1961-12-27 | Method of making self-supporting coils and mandrel therefor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3182384A (en) |
| DK (1) | DK116671B (en) |
| GB (1) | GB952401A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3323200A (en) * | 1964-05-19 | 1967-06-06 | Automatic Elect Lab | Method for manufacturing selfsupporting coils |
| US3474531A (en) * | 1964-11-17 | 1969-10-28 | Piconics Inc | Encapsulated electrical component and method for making the same |
| US3401451A (en) * | 1964-11-17 | 1968-09-17 | Piconics Inc | Method of fabricating tunable inductors |
| US3460247A (en) * | 1966-02-01 | 1969-08-12 | Kaman Sciences Corp | Method of making a flat top coil |
| US3458928A (en) * | 1966-02-23 | 1969-08-05 | Caterpillar Tractor Co | Method for forming rotor constrained electrical coils |
| DE2541084C3 (en) * | 1975-09-15 | 1978-12-07 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Method for producing a self-supporting coil in the winding area |
| US4523375A (en) * | 1983-06-16 | 1985-06-18 | Digital Equipment Corp. | Method of manufacture for a magnetic tachometer for disk drives |
| NL1004669C2 (en) * | 1996-12-02 | 1998-06-03 | Microtronic Nederland Bv | Transducer. |
| US6658134B1 (en) | 1999-08-16 | 2003-12-02 | Sonionmicrotronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
| EP1219135B1 (en) * | 1999-10-07 | 2003-08-13 | Knowles Electronics, Inc. | Electro-acoustic transducer with resistance to shock-waves |
| US9859879B2 (en) | 2015-09-11 | 2018-01-02 | Knowles Electronics, Llc | Method and apparatus to clip incoming signals in opposing directions when in an off state |
| DE102018221577A1 (en) | 2017-12-30 | 2019-07-04 | Knowles Electronics, Llc | ELECTRIC ACOUSTIC CONVERTER WITH IMPROVED SHOCK PROTECTION |
| US11659337B1 (en) | 2021-12-29 | 2023-05-23 | Knowles Electronics, Llc | Balanced armature receiver having improved shock performance |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1933444A (en) * | 1931-03-18 | 1933-10-31 | American Steel & Wire Co | Rail bond and method of making same |
| BE416030A (en) * | 1936-06-12 | 1936-07-31 | ||
| US2683572A (en) * | 1951-02-28 | 1954-07-13 | Coats & Clark | Plastic rim spool and the method of producing the same |
| US2944338A (en) * | 1953-12-30 | 1960-07-12 | Gen Electric | Spray metal process for making precision articles |
| US2861755A (en) * | 1954-05-05 | 1958-11-25 | Ralph I Hauser | Torque-coil form for permanent magnet gyro |
| US2988804A (en) * | 1957-08-30 | 1961-06-20 | Tibbetts Industries | Method of winding electric coils |
| US2970373A (en) * | 1959-06-22 | 1961-02-07 | Everard F Kohl | Process of preparing panels |
-
1960
- 1960-12-27 US US78743A patent/US3182384A/en not_active Expired - Lifetime
-
1961
- 1961-12-22 DK DK514961AA patent/DK116671B/en unknown
- 1961-12-27 GB GB46360/61A patent/GB952401A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3182384A (en) | 1965-05-11 |
| DK116671B (en) | 1970-02-02 |
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