Patent US4501461A successfully refreshed from Google Patents.
US4501461A
Expired / Lapsed
US
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Zero insertion force socket
Assignee: International Telephone and Telegraph Corp
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Filing: 1983-12-27
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Granted: 1985-02-26
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Expires: 2003-12-27
Abstract
Abstract A zero insertion force socket for connecting the leads of an integrated circuit carrier to conductors on a printed circuit board. The socket contains a movable actuator which shifts the contacts in the socket into engagement with the leads on the carrier after the leads have been initially inserted into the socket in positions spaced from the contacts. The actuator comprises a partitioning structure made of interleaved thin metal strips which allow a very dense arrangement of the contacts in the socket and also perform an electrical shielding function.
Inventors
- 👤 John W. Anhalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:13
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/02; H05K7/10; H05K7/1007
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
291 words
A socket for an integrated circuit carrier having a plurality of rows of conductive leads depending therefrom comprising: a base plate and a top plate having a separate conductive partitioning structure therebetween slidable along a predetermined path relative to said base and top plates from a first position adjacent to one side of said plates to a second position adjacent to the opposite side of said plates; said partitioning structure comprising a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby forming a plurality of rows of rectangular holes, said strips of said first and second sets being interleaved with each other and being securely mounted in a surrounding rectangular conductive frame to thereby provide a self-supporting assembly; said strips of said first set being perpendicular to said predetermined path; said base plate and said top plate containing apertures aligned with said holes; contacts mounted in said apertures in said base plate extending upwardly through said holes; said apertures in said top plate being adapted to receive therein said conductive leads of said circuit carrier with the leads spaced from said contacts on the side thereof opposite to said one side of said plates when said partitioning structure is in said first position whereby said leads may be inserted into the socket with essentially zero force; a nonconductive element carried by each said contact within said partitioning structure; and means for shifting said partitioning structure laterally along said predetermined path to said second position to cause the strips of said first set to push against said nonconductive elements to thereby bring said contacts into engagement with said leads.
Claim 2
Dependent Claim
291 words
A socket for an integrated circuit carrier having a plurality of rows of conductive leads depending therefrom comprising: a base plate and a top plate having a separate conductive partitioning structure therebetween slidable along a predetermined path relative to said base and top plates from a first position adjacent to one side of said plates to a second position adjacent to the opposite side of said plates; said partitioning structure comprising a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby forming a plurality of rows of rectangular holes, said strips of said first and second sets being interleaved with each other and being securely mounted in a surrounding rectangular conductive frame to thereby provide a self-supporting assembly; said strips of said first set being perpendicular to said predetermined path; said base plate and said top plate containing apertures aligned with said holes; contacts mounted in said apertures in said base plate extending upwardly through said holes; said apertures in said top plate being adapted to receive therein said conductive leads of said circuit carrier with the leads spaced from said contacts on the side thereof opposite to said one side of said plates when said partitioning structure is in said first position whereby said leads may be inserted into the socket with essentially zero force; a nonconductive element carried by each said contact within said partitioning structure; and means for shifting said partitioning structure laterally along said predetermined path to said second position to cause the strips of said first set to push against said nonconductive elements to thereby bring said contacts into engagement with said leads.
Claim 3
Dependent Claim
15 words
A socket as set forth in claim 1 wherein: one of said plates is conductive.
Claim 4
Dependent Claim
32 words
A socket as set forth in claim 1 wherein: said base plate is conductive and is electrically engaged with said partitioning structure; and means electrically isolate said contacts from said base plate.
Claim 5
Dependent Claim
28 words
A socket as set forth in claim 3 wherein: said electrical isolating means comprises nonconductive hubs on said contacts firmly engaged within said apertures in said base plate.
Claim 6
Dependent Claim
19 words
A socket as set forth in claim 1 wherein: each said nonconductive element comprises a hub surrounding said contact.
Claim 7
Dependent Claim
16 words
A socket as set forth in claim 5 wherein: said hub is molded on said contact.
Claim 8
Dependent Claim
22 words
A socket as set forth in claim 1 wherein: an insulation coating is provided on said metallic strips of said partitioning structure.
Claim 9
Dependent Claim
24 words
A socket as set forth in claim 1 wherein: a solder coating on said metallic strips is reflowed to provide a rigid, integral assembly.
Claim 10
Dependent Claim
27 words
A socket as set forth in claim 8 wherein: an insulation coating is provided on said metallic strips at least adjacent to their upper and lower edges.
Claim 11
Dependent Claim
28 words
A socket as set forth in claim 1 wherein: the lower portions of said strips of said first set are bent toward said one side of said plates.
Claim 12
Dependent Claim
130 words
An electrical connector member comprising: a base plate having an actuator slidably mounted thereon; said actuator comprising a partitioning structure formed of a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby providing a plurality of rows of rectangular holes. said base plate containing apertures aligned with said holes; contacts mounted in said apertures extending upwardly through said holes; a nonconductive element carried by each said contact within said partitioning structure; and means for shifting said actuator laterally relative to said base plate to cause strips of said partitioning structure to push against said nonconductive elements to thereby deflect said contacts in tandem in a predetermined direction.
Claim 13
Dependent Claim
130 words
An electrical connector member comprising: a base plate having an actuator slidably mounted thereon; said actuator comprising a partitioning structure formed of a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby providing a plurality of rows of rectangular holes. said base plate containing apertures aligned with said holes; contacts mounted in said apertures extending upwardly through said holes; a nonconductive element carried by each said contact within said partitioning structure; and means for shifting said actuator laterally relative to said base plate to cause strips of said partitioning structure to push against said nonconductive elements to thereby deflect said contacts in tandem in a predetermined direction.
Claim 14
Dependent Claim
63 words
An electrical connector member as set forth in claim 11 wherein: said actuator includes a rectangular conductive frame surrounding said partitioning structure; and said strips of said first and second sets are interleaved with each other and are firmly mounted in said frame with the end edges of said strips tightly engaging the sides of said frame to thereby provide a self-supporting assembly.
Claim 15
Dependent Claim
182 words
An electrical connector member comprising: a base plate having an actuator slidably mounted thereon; said actuator comprising a partitioning structure formed of a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby providing a plurality of rows of rectangular holes; said actuator including a rectangular conductive frame surrounding said partitioning structure, said strips of said first and second sets being interleaved with each other and firmly mounted in said frame with the end edges of said strips tightly engaging the sides of said frame to thereby provide a self-supporting assembly; said base plate containing apertures aligned with said holes; contacts mounted in said apertures extending upwardly through said holes; individual nonconductive driving means associated with each of said contacts within said partitioning structure; and means for shifting said partitioning structure laterally relative to said base plate to cause strips of said structure to push said driving means laterally to thereby deflect said contacts in tandem in a predetermined direction.
Claim 16
Dependent Claim
182 words
An electrical connector member comprising: a base plate having an actuator slidably mounted thereon; said actuator comprising a partitioning structure formed of a first set of parallel spaced metallic strips and a second set of parallel spaced metallic strips, said strips of said first set extending perpendicular to said strips of said second set thereby providing a plurality of rows of rectangular holes; said actuator including a rectangular conductive frame surrounding said partitioning structure, said strips of said first and second sets being interleaved with each other and firmly mounted in said frame with the end edges of said strips tightly engaging the sides of said frame to thereby provide a self-supporting assembly; said base plate containing apertures aligned with said holes; contacts mounted in said apertures extending upwardly through said holes; individual nonconductive driving means associated with each of said contacts within said partitioning structure; and means for shifting said partitioning structure laterally relative to said base plate to cause strips of said structure to push said driving means laterally to thereby deflect said contacts in tandem in a predetermined direction.
Claim 17
Dependent Claim
34 words
An electrical connector member as set forth in claim 13 wherein: said base plate is conductive and is electrically engaged with said partitioning structure; and means electrically isolate said contacts from said base plate.
Claim 18
Dependent Claim
30 words
An electrical connector member as set forth in claim 14 wherein: said electrical isolating means comprises nonconductive hubs on said contacts firmly engaged within said apertures in said base plate.
Claim 19
Dependent Claim
21 words
An electrical connector member as set forth in claim 13 wherein: said driving means comprises a hub surrounding each said contact.
Claim 20
Dependent Claim
26 words
An electrical connector member as set forth in claim 13 wherein: a solder coating on said metallic strips is reflowed to provide a rigid, integral assembly.
Claim 21
Dependent Claim
29 words
An electrical connector member as set forth in claim 17 wherein: an insulation coating is provided on said metallic strips at least adjacent to their upper and lower edges.
References Cited (Backward Citations)
US28171A
Cited
US2939100A
Cited
GB872171A
Cited
US3027534A
Cited
US3418621A
Cited
US3406369A
Cited
US3594698A
Cited
US3611251A
Cited
US3763459A
Cited
USRE28171E
Cited
US4012099A
Cited
US4331371A
Cited
US4397512A
Cited
US4381130A
Cited
US4422703A
Cited
US4468072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |