Patent US3752899A successfully refreshed from Google Patents.
US3752899A
Expired / Lapsed
US
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Shielding and gasketing material
Assignee: Metex Corp USA
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Filing: 1970-05-25
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Granted: 1973-08-14
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Expires: 1990-05-25
Abstract
Abstract An elastomeric matrix has an upper face and a lower face. Preferably a plurality of continuous unitary conductive layers is disposed within the matrix perpendicular to said face. A plurality of contact points are in contact with the conductive layer. The conductive layer is preferably expanded metal.
Inventors
- 👤 W Bakker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:13
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/0015; Y; Y10; Y10S; Y10S277/00; Y10S277/92
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
15 words
The material as claimed in claim 1 wherin said conductive layers are of expanded metal.
Claim 2
Dependent Claim
17 words
The material as described in claim 1 wherein said contact points are coated with a tin alloy.
Claim 3
Dependent Claim
12 words
The material as described in claim 2 wherein said metal is copper.
Claim 4
Dependent Claim
13 words
The material as described in claim 2 wherein said coating is tin-plated copper.
Claim 5
Dependent Claim
14 words
The material as described in claim 1 wherein said elastomeric material is a silicone.
Claim 6
Independent Claim
148 words
A method for producing a shielding and gasketing material comprising the step of encasing a plurality of parallel electrically conductive layers in a non-conductive elastomeric matrix to form a slab, maintaining said matrix between said layers to prevent conduction from occurring between said layers in said matrix, cutting a slice having a first and a second exposed face from the slab so that the encased conductive layers lie in a plane substantially perpendicular to the first exposed face and the second exposed face, the height of the slab forming the width of the slice, portions of the encased conductive layer within the slice forming a plurality of contact points on said exposed faces, said contact points lying substantially in the plane of the exposed faces, and coating the contact points with a metal or metal alloy to produce a plurality of raised contact points on said exposed faces.
Claim 7
Dependent Claim
27 words
The method as described in claim 7 wherein the coating step is carried out by dipping the slice into a melt of said metal or metal alloy.
Claim 8
Dependent Claim
25 words
The method as described in claim 7 wherein the coating step is carried out by electroplating the metal or metal alloy into said contact points.
Claim 9
Dependent Claim
30 words
The method as described in claim 7 wherein a plurality of said continuous unitary conductive layers are separately encased within the matrix, there being no electrical path between said layers.
Claim 10
Dependent Claim
27 words
The method as described in claim 7 wherein the conductive layers are made of copper and the contact coating step comprises coating tin on said copper contacts.
Claim 11
Dependent Claim
19 words
The method as described in claim 7 wherein each of said electrically conductive layers are continuous unitary conductive layers.
References Cited (Backward Citations)
US2454567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |