US5022976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and jig for plating pin grid arrays
Assignee: Ceramtec GmbH
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Filing: 1989-03-29
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Granted: 1991-06-11
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Expires: 2009-03-29
Abstract
Abstract A receiving jig for PGAs comprises a rectangular base-plate made of a corrosion-resistant metal which has at least one hole. The lengths of the edges of the base-plate have at least the dimensions of the PGA housing. Arranged on the metal baseplate are bars parallel to the surface at equidistant spacings and the height of the bars above the baseplate is at least half the length of the pins of the PGAs. The spacing between two bars on the surface of the baseplate corresponds to twice the spacing between two adjacent rows of pins on the PGA. There should be at least enough bars present to make contact with all the pins of the PGA.
Inventors
- 👤 Rudolf Roll
- 👤 Jurgen Brandenburger
- 👤 Horst Hempel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:43
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/06; H; H10; H10W; H10W72/00; H10W72/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
60 words
A receiving jig for pin grid arrays (PGAs), wherein a rectangular metal baseplate made of corrosion-resistant material whose length and width are at least equal to the length and width of a PGA housing has a plurality of regularly arranged metallic projections to which all the pins of a PGA can be securely clamped and also at least one hole.
Claim 2
Dependent Claim
60 words
A receiving jig for pin grid arrays (PGAs), wherein a rectangular metal baseplate made of corrosion-resistant material whose length and width are at least equal to the length and width of a PGA housing has a plurality of regularly arranged metallic projections to which all the pins of a PGA can be securely clamped and also at least one hole.
Claim 3
Dependent Claim
116 words
The jig according to claim 1, wherein a plurality of metal bars are arranged on the metal baseplate parallel to the surface of the metal baseplate in parallel rows and the height of the bars above the metal baseplate is at least half the length of the pins of the PGAs and the cross-section of the bars is 0-5% larger than the spacing of two adjacent rows of pins on the PGA and the spacing between two bars on the surface of the metal baseplate corresponds to twice the spacing of two adjacent rows of pins on the PGA and at least enough bars are present to make contact to all the pins of the PGA.
Claim 4
Dependent Claim
97 words
A jig as claimed in claim 1, wherein there project out of the metal baseplate metal pegs whose length is at least half the length of the pins of the PGAs and whose cross-section at least in the upper third is 40-45% larger than the spacing of two adjacent rows of pins on the PGA and the spacing between two adjacent pegs on the metal baseplate corresponds to twice the spacing of two adjacent rows of pins on the PGA and at least enough pegs are present to make contact to all the pins of the PGA.
Claim 5
Dependent Claim
29 words
The jig as claimed in claim 2, wherein the bars have a cross-section in the form of a wedge which tapers in the perpendicular direction away from the baseplate.
Claim 6
Dependent Claim
18 words
The jig as claimed in claim 2, wherein the bars are seated on webs having a predetermined height.
Claim 7
Dependent Claim
23 words
The jig as claimed in claim 5, wherein the bars and webs are in one piece and are machined out of the baseplate.
Claim 8
Dependent Claim
22 words
The jig as claimed in claim 2, wherein the bars are aligned parallel to two opposite edges of the rectangular metal baseplate.
Claim 9
Dependent Claim
15 words
The jig as claimed in claim 3, wherein the metal pegs have a round cross-section.
Claim 10
Dependent Claim
19 words
The jig as claimed in claim 8, wherein the upper third of the round metal pegs is conically tapered.
Claim 11
Dependent Claim
29 words
The jig as claimed in claim 9, wherein the tapered cone of the metal peg is wider at the widest point than at the base of the metal peg.
Claim 12
Dependent Claim
18 words
The jig as claimed in claim 1, wherein the metal baseplate is manufactured from titanium or V4A steel.
Claim 13
Dependent Claim
43 words
The jig as claimed in claim 1, wherein a plurality of metal baseplates (individual baseplates) are joined mechanically to form a larger metal plate in a manner such that the lateral boundary phases of the individual baseplates are in contact with each other.
Claim 14
Dependent Claim
23 words
The jig as claimed in claim 12, wherein 40 individual baseplates are joined to form a large metal baseplate in a 4×10 grid.
Claim 15
Dependent Claim
18 words
The jig as claimed in claim 12, wherein the individual metal baseplates are clipped onto a metal rack.
Claim 16
Dependent Claim
37 words
The jig as claimed in claim 14, wherein the individual baseplates arranged in the center of the large metal plate have holes which are wider than the holes of the individual baseplates arranged away from the center.
Claim 17
Dependent Claim
39 words
The jig as claimed in claim 3, wherein the metal baseplate has a protective coating comprised of an adhesive which is inert with respect to chemicals used in electroplating, said coating extending up to 50% of the peg length.
Claim 18
Dependent Claim
16 words
The jig as claimed in claim 16, wherein the protective coating is composed of silicone rubber.
Claim 19
Dependent Claim
18 words
The jig as claimed in claim 3, wherein the metal pegs are comprised of titanium or V4A steel.
Claim 20
Dependent Claim
18 words
The jig as claimed in claim 2, wherein the metal bars are comprised of titanium or V4A steel.
Claim 21
Dependent Claim
17 words
The jig as claimed in claim 5, wherein the webs are comprised of titanium or V4A steel.
Claim 22
Dependent Claim
39 words
The jig as claimed in claim 5, wherein the metal baseplate has a protective coating comprised of an adhesive which is inert with respect to chemicals used in electroplating, said coating extending up to 50% of the web height.
Claim 23
Dependent Claim
49 words
The jig as claimed in claim 3, wherein an entire large metal baseplate made up of a plurality of individual baseplate has a protective coating comprised of an adhesive which is inert with respect to chemicals used in electroplating, said coating extending up to 50% of the peg length.
Claim 24
Dependent Claim
50 words
The jig as claimed in claim 5, wherein an entire large metal baseplate made up of a plurality of individual baseplate has a protective coating comprised of an adhesive which is inert with respect to the chemicals used in electroplating, said coating extending up to 50% of the web height.
References Cited (Backward Citations)
US3518756A
Cited
US4032414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |