US3591922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of electrical solder joints using electrodeposited solder
Assignee: Unisys Corp
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Filing: 1968-12-05
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Granted: 1971-07-13
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Expires: 1988-12-05
Abstract
Abstract The present device provides a common-connection element such as a bus bar whereupon solder has been electrodeposited and which has been formed to fit over backboard wiring prongs in such a fashion as to come in contact with certain of said prongs. The combination of the bus bar and the backboard wiring prongs is then heated to a point that the solder melts and the prongs become sufficiently hot to draw the solder, or cause a capillary action between the melted solder on the common-connection element and the prongs, thereby causing the solder to build fillets around each of the respective prongs coming in contact with the common-connection element.
Inventors
- 👤 Munson H Pardee
- 👤 Richard D Turi
- 👤 Richard L Butler
- 👤 Edward C Zacaroli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:56
CPC Classifications
H; H01; H01R; H01R31/00; H01R31/08; H01R31/085; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3447; H01R31/02; H05K1/00; H05K1/02; H05K1/0213; H05K1/0263; H05K2201/00; H05K2201/10; H05K2201/10227; H05K2201/10272; H05K3/3465; H05K3/3473; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49147; Y10T29/49149
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
220 words
A method for interconnecting electrical terminals comprising the steps of: a. securing a plurality of electrical terminals in an electrically nonconducting base member; b. solder plating a common-connection member; c. forming a plurality of first apertures in said commonconnection member each of which first apertures has a cross section slightly larger than the cross section of an individual one of said elongated electrical terminals; d. forming a plurality of second apertures in said commonconnection member each of which second apertures has a cross section which is very much larger than the cross section of an individual one of said elongated electrical terminals; e. placing said common-connection member over said elongated electrical terminals in order that it comes to rest in close proximity to said electrically nonconducting base with certain of said elongated electrical terminals passing through said first apertures and others of said elongated electrical terminals passing through said second apertures; and f. passing said base member with said elongated electrical terminals secured therein and with said common-connection member located thereupon through a heating chamber so as to cause said solder layer on said common-connection member to be drawn up on said certain ones of said elongated electrical terminals which pass through said first apertures thereby making an electrical connection between said last-mentioned elongated electrical terminals and said common-connection member.
Claim 2
Independent Claim
220 words
A method for interconnecting electrical terminals comprising the steps of: a. securing a plurality of electrical terminals in an electrically nonconducting base member; b. solder plating a common-connection member; c. forming a plurality of first apertures in said commonconnection member each of which first apertures has a cross section slightly larger than the cross section of an individual one of said elongated electrical terminals; d. forming a plurality of second apertures in said commonconnection member each of which second apertures has a cross section which is very much larger than the cross section of an individual one of said elongated electrical terminals; e. placing said common-connection member over said elongated electrical terminals in order that it comes to rest in close proximity to said electrically nonconducting base with certain of said elongated electrical terminals passing through said first apertures and others of said elongated electrical terminals passing through said second apertures; and f. passing said base member with said elongated electrical terminals secured therein and with said common-connection member located thereupon through a heating chamber so as to cause said solder layer on said common-connection member to be drawn up on said certain ones of said elongated electrical terminals which pass through said first apertures thereby making an electrical connection between said last-mentioned elongated electrical terminals and said common-connection member.
Claim 3
Dependent Claim
47 words
A method for interconnecting electrical terminals according to claim 1, wherein the step of passing said base member to a heating chamber includes the step of subjecting said base member with said elongated electrical terminals secured therein and with said common connection located thereupon to induction heating.
Claim 4
Dependent Claim
73 words
A method of interconnecting electrical terminals according to claim 1 wherein the steps of solder plating a common-connection member includes the step of placing a copper base means into a bath of 60 140 tin/lead fluoborate and further includes a step of connecting to a source of electrical power said copper base as a cathode and an electrode made of tin and lead and placing said cathode and electrode into said last-mentioned bath.
Claim 5
Dependent Claim
64 words
A method for interconnecting electrical terminals in accordance with claim 1 wherein said step of passing said base member to a heating chamber includes the step subjected said base member to induction heating by transporting said member through an induction heating chamber at the rate of 1.5 feet per minute and wherein the temperature of said induction chamber is held at approximately 370* F.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |