Patent US4037312A successfully refreshed from Google Patents.
US4037312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a mechanically stable electrical winding having cooling openings therein
Assignee: Westinghouse Electric Corp
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Filing: 1974-12-12
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Granted: 1977-07-26
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Expires: 1994-12-12
Abstract
Abstract Insulated wire coated with a bonding material is formed into cables and wound in an appropriate chamber. A pressurizing material is utilized to compress the wires in the chamber. The pressurizing material is then hardened to maintain the wires in the compressed state. Heat is then applied to cause the bonding material to bond the wires together and rigidly maintain them in the positions they occupy when compressed.
Inventors
- 👤 Daniel W. Deis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:28
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/12; H02K15/00; H02K15/12; H02K3/24; H02K2203/00; H02K2203/15; Y; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/918; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/49014; Y10T29/4902; Y10T29/49071; Y10T29/49805
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
A method of fabricating a superconductive electrical winding in a structure having a chamber to receive the winding comprising: forming a plurality of superconductive filaments into a single strand; encasing the strand of superconductive filaments in a normally conductive material to form a wire; insulating the wire; covering the insulated wire with a thermally responsive bonding material; forming a plurality of the insulated wires covered with the thermally responsive bonding material into a composite cable; placing a desired number of winds of the cable in the chamber; compressing the winds in the chamber by means of a fluid pressurizing material, the pressure of said compressing being sufficient to cause the bonding material of adjacent wires in the winding to merge without filling in the interstices among the wires; hardening the pressurizing material to maintain the winds in the compressed state; and heating the structure to cause the bonding material to bond the wires together and secure them in the positions they occupy in the compressed winds.
Claim 2
Independent Claim
166 words
A method of fabricating a superconductive electrical winding in a structure having a chamber to receive the winding comprising: forming a plurality of superconductive filaments into a single strand; encasing the strand of superconductive filaments in a normally conductive material to form a wire; insulating the wire; covering the insulated wire with a thermally responsive bonding material; forming a plurality of the insulated wires covered with the thermally responsive bonding material into a composite cable; placing a desired number of winds of the cable in the chamber; compressing the winds in the chamber by means of a fluid pressurizing material, the pressure of said compressing being sufficient to cause the bonding material of adjacent wires in the winding to merge without filling in the interstices among the wires; hardening the pressurizing material to maintain the winds in the compressed state; and heating the structure to cause the bonding material to bond the wires together and secure them in the positions they occupy in the compressed winds.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1 wherein said insulating step comprises surrounding each of the individual wires with a layer of phenolic modified polyvinyl formal.
Claim 4
Dependent Claim
24 words
A method as claimed in claim 1 wherein said covering step comprises coating the insulated wire with an epoxy that is self-bonding when heated.
Claim 5
Independent Claim
99 words
A method of fabricating a superconductive rotor winding in a rotor having slots to receive the winding comprising; locating a collapsible tube in the bottom of a slot; forming multi-filament insulated superconductive wires covered with a bonding material into a cable; placing a desired number of winds of the cable in the slot; forcing a wedge into the slot to compress the winds and hold them in the slot; and expanding the collapsible tube to compress the winds against the wedge and cause the bonding material on abutting wires to merge without filling in the interstices among adjacent wires.
Claim 6
Independent Claim
99 words
A method of fabricating a superconductive rotor winding in a rotor having slots to receive the winding comprising; locating a collapsible tube in the bottom of a slot; forming multi-filament insulated superconductive wires covered with a bonding material into a cable; placing a desired number of winds of the cable in the slot; forcing a wedge into the slot to compress the winds and hold them in the slot; and expanding the collapsible tube to compress the winds against the wedge and cause the bonding material on abutting wires to merge without filling in the interstices among adjacent wires.
Claim 7
Dependent Claim
43 words
A method as claimed in claim 4 wherein the bonding material is thermally responsive and further comprising the step of heating the rotor to activate the bonding material to rigidly bond the wires together in the positions they occupy in the compressed winds.
Claim 8
Dependent Claim
22 words
A method as claimed in claim 4 wherein the expanding step is achieved by injecting a fluid epoxy into the collapsible tube.
Claim 9
Dependent Claim
25 words
A method as claimed in claim 6 and further comprising the step of hardening the fluid epoxy to retain the winds in the compressed state.
Claim 10
Dependent Claim
43 words
A method as claimed in claim 7 wherein the bonding material is thermally responsive and further comprising the step of heating the rotor to activate the bonding material to rigidly bond the wires together in the positions they occupy in the compressed winds.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |