Patent US3596138A successfully refreshed from Google Patents.
US3596138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interboard feed-thru for joining printed and integrated circuits
Assignee: TEK WAVE Inc
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Filing: 1969-08-25
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Granted: 1971-07-27
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Expires: 1989-08-25
Abstract
Abstract A feed-thru device making it possible to stack integrated circuits and/or printed circuit boards in closely spaced parallel fashion and providing means for joining components and/or terminals from one adjacent board to the next. The feed-thru is comprised of a solid conductive body for threadedly engaging suitable mounting hardware to rigidly join adjacent boards in closely spaced parallel fashion. The conductive body further acts as part of a coaxial circuit in conjunction with a center conductor electrically isolated from he conductive body by a suitable insulating sleeve, which center conductor further functions as a pin or terminal for connection with the printed circuit terminal element at both ends of the center conductor or pin. The configuration of the pin provides excellent impedance matching between each printed circuit through the coaxial configuration. The mounting hardware is so arranged as to provide excellent mode suppression at microwave frequencies.
Inventors
- 👤 Sanford S Lehrfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:38
CPC Classifications
H; H01; H01R; H01R12/00; H01R12/50; H01R12/51; H01R12/52; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/025; H05K1/14; H05K1/144; H05K2201/00; H05K2201/04; H05K2201/042; H05K2201/10; H05K2201/10227; H05K2201/10295
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
205 words
A feed-through assembly for mechanically and electrically joining circuit boards of the microstrip type in closely spaced, parallel fashion comprising: a cylindrical shaped body having top and bottom surfaces arranged substantially in spaced parallel fashion; said body having a central opening and a plurality of mounting openings surrounding said central opening and lying at equispaced intervals therefrom; said openings communicating with said top and bottom surfaces; an elongated conductive pin positioned within said central opening; and an insulating sleeve surrounding said pin being positioned within said central opening; said body and said pin forming a coaxial circuit; the first and second ends of said pin extending beyond the top and bottom surfaces of said body; said circuit boards each comprising a conductive ground plane on one surface spaced from a printed circuit provided on the opposite surface by an insulating layer and each being provided with openings to receive respective ends of said pin and each having at least one terminal lying adjacent its respective circuit board opening to facilitate electrical connections therebetween; fastening means for each of said circuit boards being aligned with said mounting openings, each threadedly engaging an associated mounting opening to mechanically join each of said circuit boards to said body.
Claim 2
Dependent Claim
205 words
A feed-through assembly for mechanically and electrically joining circuit boards of the microstrip type in closely spaced, parallel fashion comprising: a cylindrical shaped body having top and bottom surfaces arranged substantially in spaced parallel fashion; said body having a central opening and a plurality of mounting openings surrounding said central opening and lying at equispaced intervals therefrom; said openings communicating with said top and bottom surfaces; an elongated conductive pin positioned within said central opening; and an insulating sleeve surrounding said pin being positioned within said central opening; said body and said pin forming a coaxial circuit; the first and second ends of said pin extending beyond the top and bottom surfaces of said body; said circuit boards each comprising a conductive ground plane on one surface spaced from a printed circuit provided on the opposite surface by an insulating layer and each being provided with openings to receive respective ends of said pin and each having at least one terminal lying adjacent its respective circuit board opening to facilitate electrical connections therebetween; fastening means for each of said circuit boards being aligned with said mounting openings, each threadedly engaging an associated mounting opening to mechanically join each of said circuit boards to said body.
Claim 3
Dependent Claim
13 words
The assembly of claim 1, wherein said body is a solid conductive member.
Claim 4
Dependent Claim
22 words
The assembly of claim 1, wherein said body is a solid dielectric member having a conductive sleeve surrounding its outer cyLindrical surface.
Claim 5
Dependent Claim
32 words
The assembly of claim 1, wherein said body is a solid dielectric member having a conductive sleeve mounted within said central opening and spaced from the conductive pin by said insulating sleeve.
Claim 6
Dependent Claim
100 words
The assembly of claim 1, wherein said conductive pin is an elongated member having an intermediate portion thereof being of cylindrical shape and having a first diameter; said intermediate portion being joined at its opposite ends respectively by first and second tapered conical portions; the ends of said tapered conical portions removed from said intermediate portion each being of a second diameter smaller than said first diameter; the angle and length of said tapered conical portions being selected to provide good impedance matching between the circuits provided on said circuit boards and the coaxial circuit provided by the feed-through assembly.
Claim 7
Dependent Claim
28 words
The assembly of claim 5, wherein the tapered conical portions are each integrally joined to short cylindrical sections, each having a diameter substantially equal to said second diameter.
Claim 8
Dependent Claim
44 words
The assembly of claim 1, wherein the threaded fasteners joining each circuit board to the feed-through assembly are arranged at equal distances from their associated circuit board openings and, together with their associated terminals, are spaced at 90* intervals, to provide excellent mode suppression.
Claim 9
Dependent Claim
58 words
The assembly of claim 1, wherein each of said circuit boards are integrated circuits comprised of a thin planar insulating substrate having a conductive ground plane on one surface of the substrate, making surface contact with the respective top and bottom surfaces of said body, and having an integrated circuit formed upon the remaining surface of said substrate.
Claim 10
Dependent Claim
71 words
The assembly of claim 3, wherein each of said circuit boards are integrated circuits comprised of a thin planar insulating substrate having a conductive ground plane on one surface of the substrate making surface contact with the respective top and bottom surfaces of said body and having an integrated circuit formed upon the remaining surface of said substrate, said conductive sleeve being in electrical contact with both of said ground planes.
Claim 11
Dependent Claim
71 words
The assembly of claim 4, wherein each of said circuit boards are integrated circuits comprised of a thin planar insulating substrate having a conductive ground plane on one surface of the substrate making surface contact with the respective top and bottom surfaces of said body, and having an integrated circuit formed upon the remaining surface of said substrate, said conductive sleeve being in electrical contact with both of said ground planes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |