US4226492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical interconnection apparatus
Assignee: AT&T Inc
•
Filing: 1979-07-30
•
Granted: 1980-10-07
•
Expires: 1999-07-30
Abstract
Abstract Electrical interconnection apparatus for mounting integrated circuit modules and for adapting the terminal pattern of the densely spaced leads of a module to the terminal pattern of the more widely spaced pin sockets of a printed wiring board. Rows of terminals (19, 20), spaced to conform to the module leads, are arranged on two sides of a module support platform (10) and are extended by conducting elements (27, 28, 29, 30) to particular terminal pins of a plurality of rows of terminal pins (21, 22, 23, 24, 25, 26) extending from the underside of lead frame blocks (11, 12) retained by the support platform (10). Ground plane elements (15, 16, 17, 18) are featured which are supported by the lead frame blocks (11, 12) between the terminal pin rows (21, 22, 23, 24, 25, 26) to control the impedance of the conducting elements (27, 28, 29, 30).
Inventors
- 👤 Subhash R. Deo
- 👤 Chester C. Faudskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:25
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
334 words
Electrical interconnection apparatus for adapting the terminal pattern of a first electrical component of first spacings to the terminal pattern of a second electrical component of second, greater spacings comprising an electrically insulative platform for supporting said first component, a row of n groups of terminals plus one terminal arranged on one side of said platform corresponding to said terminal pattern of said first component, each of said groups including three terminals, an insulative lead frame block mounted on the underside of said platform, a first row of n+1 terminal pins having said second spacings extending from said lead frame block aligned with said row of n groups of terminals, a second and third row of n+1 terminal pins each having said second spacings extending from said lead frame block on respective sides of said first row of terminal pins, first electrical conducting means for connecting the first terminals of each of said n groups of terminals and said one terminal to successive pins of said first row of terminal pins, second electrical conducting means for connecting the second terminals of each of said n groups of terminals and said one terminal to successive pins of said second row of terminal pins beginning with the first pin of said last-mentioned row, third electrical conducting means for connecting the third terminals of each of said n groups of terminals and said one terminal to successive pins of said third row of terminal pins beginning with the second pin of said last-mentioned row, and means for determining the impedance of said second and third electrical conducting means comprising first and second ground plane elements supported by said lead frame block between said first and second row of terminal pins and said first and third row of terminal pins, respectively, said first ground plane element being connected to the last terminal pin of said second row of pins and said second ground plane element being connected to the first terminal pin of said third row of pins.
Claim 2
Dependent Claim
334 words
Electrical interconnection apparatus for adapting the terminal pattern of a first electrical component of first spacings to the terminal pattern of a second electrical component of second, greater spacings comprising an electrically insulative platform for supporting said first component, a row of n groups of terminals plus one terminal arranged on one side of said platform corresponding to said terminal pattern of said first component, each of said groups including three terminals, an insulative lead frame block mounted on the underside of said platform, a first row of n+1 terminal pins having said second spacings extending from said lead frame block aligned with said row of n groups of terminals, a second and third row of n+1 terminal pins each having said second spacings extending from said lead frame block on respective sides of said first row of terminal pins, first electrical conducting means for connecting the first terminals of each of said n groups of terminals and said one terminal to successive pins of said first row of terminal pins, second electrical conducting means for connecting the second terminals of each of said n groups of terminals and said one terminal to successive pins of said second row of terminal pins beginning with the first pin of said last-mentioned row, third electrical conducting means for connecting the third terminals of each of said n groups of terminals and said one terminal to successive pins of said third row of terminal pins beginning with the second pin of said last-mentioned row, and means for determining the impedance of said second and third electrical conducting means comprising first and second ground plane elements supported by said lead frame block between said first and second row of terminal pins and said first and third row of terminal pins, respectively, said first ground plane element being connected to the last terminal pin of said second row of pins and said second ground plane element being connected to the first terminal pin of said third row of pins.
References Cited (Backward Citations)
US3353263A
Cited
US3497947A
Cited
US3409861A
Cited
US3617817A
Cited
US3587029A
Cited
US3781457A
Cited
US3904262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |