US3855694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of winding deflection coils for picture display tubes
Assignee: US Philips Corp
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Filing: 1973-08-20
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Granted: 1974-12-24
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Expires: 1993-08-20
Abstract
Abstract A method of winding deflection coils in which the turns are distributed over a number of sections by inserting one or more pins into the winding space during winding whenever the number of turns required for one section is obtained.
Inventors
- 👤 Der Heijde M Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:06
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F5/00; H01F5/02; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J29/762; H01F41/06; H01F41/071; H01F2041/0711; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A method of sequentially making a plurality of saddle shaped television deflection coils for a cathode ray tube comprising winding a first coil section, winding a second coil section series coupled to said first coil section about said first section, forming at least one open space having a selected position between said sections during said second recited winding step, and obtaining a desired magnetic field generated by said coils when current is passed therethrough by testing the flux distribution of a selected coil and adjusting the number of turns in each of said sections during at least one of said winding steps of coils made subsequent to said selected coil, the adjustment depending upon results of said testing step.
Claim 2
Independent Claim
119 words
A method of sequentially making a plurality of saddle shaped television deflection coils for a cathode ray tube comprising winding a first coil section, winding a second coil section series coupled to said first coil section about said first section, forming at least one open space having a selected position between said sections during said second recited winding step, and obtaining a desired magnetic field generated by said coils when current is passed therethrough by testing the flux distribution of a selected coil and adjusting the number of turns in each of said sections during at least one of said winding steps of coils made subsequent to said selected coil, the adjustment depending upon results of said testing step.
Claim 3
Dependent Claim
35 words
A method as claimed in claim 1 wherein said forming step comprises placing at least one pin adjacent said first winding in a direction perpendicular to the winding plane thereof, whereby said space is formed.
Claim 4
Dependent Claim
28 words
A method as claimed in claim 1 wherein said forming step comprises forming said space near a portion of said coils having a minimum density of winding turns.
Claim 5
Independent Claim
177 words
A method of sequentially making a plurality of saddle shaped television deflection coils for a cathode ray tube comprising winding a first coil section, winding a second coil section series coupled to said first coil section about said first section, forming at least one open space having a selected position between said sections during said second recited winding step by placing A first pin adjacent said first winding in a direction perpendicular to the winding plane thereof, obtaining a desired magnetic field generated by said coils when current is passed therethrough by testing a selected coil and adjusting the number of turns in each of said sections during at least one of said winding steps of coils made subsequent to said selected coil, and compensating for asymmetries in said coils comprising winding only a portion of said second coil section after placing said pin, then placing a second pin adjacent the wound portion of said second section on the opposite side of a symmetry plane of said coils, and winding the remainder of said second coil section.
Claim 6
Independent Claim
177 words
A method of sequentially making a plurality of saddle shaped television deflection coils for a cathode ray tube comprising winding a first coil section, winding a second coil section series coupled to said first coil section about said first section, forming at least one open space having a selected position between said sections during said second recited winding step by placing A first pin adjacent said first winding in a direction perpendicular to the winding plane thereof, obtaining a desired magnetic field generated by said coils when current is passed therethrough by testing a selected coil and adjusting the number of turns in each of said sections during at least one of said winding steps of coils made subsequent to said selected coil, and compensating for asymmetries in said coils comprising winding only a portion of said second coil section after placing said pin, then placing a second pin adjacent the wound portion of said second section on the opposite side of a symmetry plane of said coils, and winding the remainder of said second coil section.
Claim 7
Dependent Claim
28 words
A method as claimed in claim 4 wherein said forming step comprises forming said space near a portion of said coils having a minimum density of winding turns.
References Cited (Backward Citations)
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |