Patent US2715531A successfully refreshed from Google Patents.
EP0347561A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Separable electrical connection
Assignee: International Business Machines Corp
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Filing: 1989-04-27
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Granted: —
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Expires: 2009-04-27
Abstract
Abstract A separable and reconnectable connection for electrical equipment is provided that is suitable for miniaturization in which vertical interdigitating members (2) integrally attached and protruding from a planar portion (1) are accommodated in control of lateral stress (arrow 6) that occurs on mating with an opposite similar contact. Stress is accommodated by providing a conformal opposing contact, by a strengthening and/or a shock absorbing coating.
Inventors
- 👤 Jerome John Cuomo
- 👤 Sung Kwon Kang
- 👤 Jungihl Kim
- 👤 Paul Lauro
- 👤 Ekkehard Fritz Miersch
- 👤 John James Ritsko
- 👤 George John Saxenmeyer
- 👤 George Frederick Walker
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:21
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/22; H01R4/00; H01R4/26; H01R4/58; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/325
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
68 words
An electrical connection comprising in combination at least one planar area of conductive material (1), a plurality of interdigitating members (2) positioned essentially vertical with respect to said planar area and integrally fastened to said planar area material, each said interdigitating member having a vertical to horizontal aspect ratio that is greater than 1, and means for accommodating stresses that are lateral with respect to said planar direction.
Claim 2
Dependent Claim
68 words
An electrical connection comprising in combination at least one planar area of conductive material (1), a plurality of interdigitating members (2) positioned essentially vertical with respect to said planar area and integrally fastened to said planar area material, each said interdigitating member having a vertical to horizontal aspect ratio that is greater than 1, and means for accommodating stresses that are lateral with respect to said planar direction.
Claim 3
Dependent Claim
23 words
The connection of claim 1 wherein at least said interdigitating members are of materials taken from the group of hillock and dendritic materials.
Claim 4
Dependent Claim
29 words
The connection of claims 1 or 2 wherein at least the material of said interdigitating members is taken from the group of palladium, platinum, rhodium, ruthenium, osmium and tungsten.
Claim 5
Dependent Claim
32 words
The connection of one of the preceding claims wherein said lateral stress accommodating means is a conformal mating contact member having a corresponding indentation for each said interdigitating member (e.g. Fig. 2).
Claim 6
Dependent Claim
16 words
The connection of claim 4 wherein said conformal mating contact is of a soft deformable material.
Claim 7
Dependent Claim
27 words
The connection of claims 4 or 5 wherein the material of said conformal mating contact is taken from the group of lead-tin eutectic solder and pure gold.
Claim 8
Dependent Claim
19 words
The connection of one of the preceding claims wherein said lateral stress accommodating means includes strengthening said interdigitating members.
Claim 9
Dependent Claim
15 words
The connection of claim 7 wherein said strengthening includes a plated coating (e.g. Fig. 11).
Claim 10
Dependent Claim
42 words
The connection of one of the preceding claims, in particular of claims 7 or 8 wherein the strengthening said interdigitating members (31 in Fig. 11) includes an adhesion coating (32), preferably of chromium, covered by a strengthening coating (33), preferably of copper.
Claim 11
Dependent Claim
41 words
The connection of claim 9 wherein the adhesion coating (32) is provided by plating, preferably with a thickness of approximately 50 nm, and wherein the overlying strengthening coating (33) is provided by sputtering, preferably with a thickness of approximately 5 µm.
Claim 12
Dependent Claim
37 words
The connection of one of the preceding claims, in particular of one of claims 7 to 10 wherein said strengthening includes a polymer (52) at the base of each said interdigitating member (51, e.g. in Fig. 17).
Claim 13
Dependent Claim
16 words
The connection of claim 11 wherein said strengthening involves a polymer reinforcement around said dendritic protrusions.
References Cited (Backward Citations)
No citation records indexed.
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