US3590480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a pulse transformer package
Assignee: Individual
•
Filing: 1968-10-03
•
Granted: 1971-07-06
•
Expires: 1988-10-03
Abstract
Abstract A pulse transformer assembly including a wound core attached to a printed circuit board. Contact leads are attached to the printed circuit and the entire assembly, except for the leads, is encapsulated.
Inventors
- 👤 Theodore H Johnson Jr
- 👤 Charles H Locke
- 👤 Paul V Robock
- 👤 Raymond D Suelflow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
H; H01; H01F; H01F19/00; H01F19/04; H01F19/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
81 words
The method of making a discrete miniature pulse transformer package comprising the steps of: soldering leads to one side of a printed circuit board having a conductive land pattern on both sides thereof; rigidly mounting a wound transformer core with an insulating means to the opposite side of the printed circuit board from said leads soldering the ends of the windings to the conductive land pattern thereby completing the miniaturized transformer assembly; and encapsulating said assembly thereby completing the transformer package.
Claim 2
Independent Claim
81 words
The method of making a discrete miniature pulse transformer package comprising the steps of: soldering leads to one side of a printed circuit board having a conductive land pattern on both sides thereof; rigidly mounting a wound transformer core with an insulating means to the opposite side of the printed circuit board from said leads soldering the ends of the windings to the conductive land pattern thereby completing the miniaturized transformer assembly; and encapsulating said assembly thereby completing the transformer package.
Claim 3
Independent Claim
85 words
The method of making a miniaturized pulse transformer package comprising the steps of: winding a transformer core with multifilar wire cable; rigidly mounting said transformer core to a printed circuit board; separating the ends of said multifilar wire cable; attaching the ends of said multifilar wire cable to the printed circuit on said printed circuit board; attaching leads to the printed circuit on said printed circuit board, thereby completing the miniaturized transformer assembly; and encapsulating the assembly thereby completing the making of the transformer package.
Claim 4
Independent Claim
85 words
The method of making a miniaturized pulse transformer package comprising the steps of: winding a transformer core with multifilar wire cable; rigidly mounting said transformer core to a printed circuit board; separating the ends of said multifilar wire cable; attaching the ends of said multifilar wire cable to the printed circuit on said printed circuit board; attaching leads to the printed circuit on said printed circuit board, thereby completing the miniaturized transformer assembly; and encapsulating the assembly thereby completing the making of the transformer package.
Claim 5
Independent Claim
88 words
The method of making a miniaturized pulse transformer package comprising the steps of: attaching leads to the land pattern of a printed circuit board; winding a transformer core with multifilar wire cable; attaching said transformer core to said printed circuit board; separating the ends of said multifilar wire cable; attaching the ends of said multifilar wire cable to predetermined portions of the land pattern on said printed circuit board, thereby completing the transformer assembly; and encapsulating said transformer assembly, thereby completing the making of the pulse transformer package.
Claim 6
Independent Claim
88 words
The method of making a miniaturized pulse transformer package comprising the steps of: attaching leads to the land pattern of a printed circuit board; winding a transformer core with multifilar wire cable; attaching said transformer core to said printed circuit board; separating the ends of said multifilar wire cable; attaching the ends of said multifilar wire cable to predetermined portions of the land pattern on said printed circuit board, thereby completing the transformer assembly; and encapsulating said transformer assembly, thereby completing the making of the pulse transformer package.
Claim 7
Dependent Claim
28 words
The methOd of claim 3 wherein: said transformer core is attached to a side of the printed circuit board opposite the side to which the leads are attached.
Claim 8
Dependent Claim
99 words
The automated method of making miniaturized pulse transformer packages comprising the steps of: cutting a printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; cutting said strip of printed circuit board into individual transformer assemblies; and encapsulating said transformer assemblies, thereby forming complete transformer packages.
Claim 9
Dependent Claim
99 words
The automated method of making miniaturized pulse transformer packages comprising the steps of: cutting a printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; cutting said strip of printed circuit board into individual transformer assemblies; and encapsulating said transformer assemblies, thereby forming complete transformer packages.
Claim 10
Dependent Claim
33 words
The method of claim 5 wherein the step of encapsulating additionally includes: sliding the printed circuit board into grooves in a casing, thereby spacing said transformer assembly from the walls of said casing.
Claim 11
Dependent Claim
120 words
The automated method of making miniaturized pulse transformer packages comprising the steps of: cutting a printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; cutting said strip of printed circuit board into individual transformer assemblies; positioning said individual transformer assemblies inside an encapsulating a cavity; and filling the encapsulating cavity with a potting compound, thereby forming a complete transformer package without the use of a casing.
Claim 12
Dependent Claim
120 words
The automated method of making miniaturized pulse transformer packages comprising the steps of: cutting a printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; cutting said strip of printed circuit board into individual transformer assemblies; positioning said individual transformer assemblies inside an encapsulating a cavity; and filling the encapsulating cavity with a potting compound, thereby forming a complete transformer package without the use of a casing.
Claim 13
Dependent Claim
105 words
The automated method of making miniaturized transformer packages comprising the steps of: cutting printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; encapsulating said strip of printed circuit board with the strip of leads and transformer cores attached thereto; and cutting said strip of printed circuit board into individual transformer assemblies.
Claim 14
Dependent Claim
105 words
The automated method of making miniaturized transformer packages comprising the steps of: cutting printed circuit board having a plurality of identical land patterns thereon, into strips; cutting a plurality of leads into strips; attaching a strip of leads to a strip of printed circuit board; attaching transformer cores having windings thereon to said printed circuit board; soldering the ends of the windings to predetermined portions of the land pattern on said strip of printed circuit board; encapsulating said strip of printed circuit board with the strip of leads and transformer cores attached thereto; and cutting said strip of printed circuit board into individual transformer assemblies.
Claim 15
Independent Claim
123 words
The method of making a pulse transformer package comprising the steps of: cutting a printed circuit board having a plurality of predetermined land patterns thereon, into strips; attaching a conductive lead strip to predetermined portions of the land pattern on said strip of printed circuit board by means of soldering, thereby producing a carrier strip; attaching a plurality of ferrite cores each having a multifilar wire thereon to said carrier strip; splitting said multifilar wire spreading said multifilar wire at a precise angle, thereby positioning it over the land pattern of the printed circuit board; attaching said multifilar wire to said printed circuit board by reflow soldering; cutting said carrier strip into individual transformer units; and encapsulating each of said discrete transformer units.
Claim 16
Independent Claim
123 words
The method of making a pulse transformer package comprising the steps of: cutting a printed circuit board having a plurality of predetermined land patterns thereon, into strips; attaching a conductive lead strip to predetermined portions of the land pattern on said strip of printed circuit board by means of soldering, thereby producing a carrier strip; attaching a plurality of ferrite cores each having a multifilar wire thereon to said carrier strip; splitting said multifilar wire spreading said multifilar wire at a precise angle, thereby positioning it over the land pattern of the printed circuit board; attaching said multifilar wire to said printed circuit board by reflow soldering; cutting said carrier strip into individual transformer units; and encapsulating each of said discrete transformer units.
Claim 17
Independent Claim
125 words
The method of making a pulse transformer package comprising the steps of: cutting a printed circuit board having a plurality of predetermined land patterns thereon, into strips; attaching a conductive lead strip to predetermined portions of the land pattern on said strip of printed circuit board by means of soldering, thereby producing a carrier strip; attaching a plurality of ferrite cores each having a multifilar wire thereon to said carrier striP; splitting said multifilar wire; spreading said multifilar wire at a precise angle, thereby positioning it over the land pattern of the printed circuit board; attaching said multifilar wire to said printed circuit board by reflow soldering; encapsulating said carrier strip and ferrite core mounted thereon; and cutting said carrier strip into individual transformer packages.
Claim 18
Independent Claim
125 words
The method of making a pulse transformer package comprising the steps of: cutting a printed circuit board having a plurality of predetermined land patterns thereon, into strips; attaching a conductive lead strip to predetermined portions of the land pattern on said strip of printed circuit board by means of soldering, thereby producing a carrier strip; attaching a plurality of ferrite cores each having a multifilar wire thereon to said carrier striP; splitting said multifilar wire; spreading said multifilar wire at a precise angle, thereby positioning it over the land pattern of the printed circuit board; attaching said multifilar wire to said printed circuit board by reflow soldering; encapsulating said carrier strip and ferrite core mounted thereon; and cutting said carrier strip into individual transformer packages.
Claim 19
Dependent Claim
108 words
The automated method of producing discrete pulse transformer packages comprising the steps of: attaching a strip of leads to a strip of printed circuit board forming a carrier strip; cutting said carrier strip into discrete printed circuit boards; positioning said discrete printed circuit board with respect to a wound transformer core wound with multifilar wire cables; attaching said wound core to said discrete printed circuit boards; splitting the multifilar wire; positioning the multifilar wire over predetermined portions of the printed circuit boards; attaching the multifilar wire to predetermined portions of said discrete printed circuit boards; and cutting the ends of said multifilar wire, thereby completing the transformer assembly.
Claim 20
Dependent Claim
108 words
The automated method of producing discrete pulse transformer packages comprising the steps of: attaching a strip of leads to a strip of printed circuit board forming a carrier strip; cutting said carrier strip into discrete printed circuit boards; positioning said discrete printed circuit board with respect to a wound transformer core wound with multifilar wire cables; attaching said wound core to said discrete printed circuit boards; splitting the multifilar wire; positioning the multifilar wire over predetermined portions of the printed circuit boards; attaching the multifilar wire to predetermined portions of said discrete printed circuit boards; and cutting the ends of said multifilar wire, thereby completing the transformer assembly.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |