Patent EP0242484A2 successfully refreshed from Google Patents.
EP0242484A2
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EP
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Electrical assembly having shielded structural sub-parts
Assignee: Tektronix Inc
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Filing: 1986-12-24
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Granted: —
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Expires: 2006-12-24
Abstract
Abstract Sub-parts located within an electronic assembly are electroplated with an alloy of nickel and iron to shield the interior regions of such sub-parts from external magnetic fields or to confine the effect of internal magnetic fields to those regions. The alloy formed on the sub-part comprises 80 parts by weight nickel and 20 parts by weight iron. This alloy results from immersion of the sub-part in a bath which is 12-14 parts nickel and 1 part iron by weight and which includes a brightener which is 4% by volume.
Inventors
- 👤 Peter D. Lynch
- 👤 Patrick Ator
- 👤 Douglas W. Trobough
- 👤 Stanley M. Varuska
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:44
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0098
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
In an electronic assembly, a structural sub-part including an outer layer of nickel-iron plating formed on said structural sub-part substantially enclosing an interior region of sub-part whereby said interior region is protected from the influence of an external magnetic field, and wherein internal magnetic fields located within said region are confined to the interior of said sub-part.
Claim 2
Dependent Claim
57 words
In an electronic assembly, a structural sub-part including an outer layer of nickel-iron plating formed on said structural sub-part substantially enclosing an interior region of sub-part whereby said interior region is protected from the influence of an external magnetic field, and wherein internal magnetic fields located within said region are confined to the interior of said sub-part.
Claim 3
Dependent Claim
28 words
The structural sub-part of claim 1 wherein said nickel/iron plating is an alloy including approximately 80 parts by weight of nickel and 20 parts by weight of iron.
Claim 4
Dependent Claim
22 words
The structural sub-part of claim 1 further including an inner layer of nickel/iron plating formed on an interior surface of said sub-part.
Claim 5
Independent Claim
31 words
A method of shielding a structural sub-part of an electronic assembly from the effects of internal and/or external magnetic fields comprising the step of electroplating said sub-part with a nickel-iron alloy.
Claim 6
Independent Claim
31 words
A method of shielding a structural sub-part of an electronic assembly from the effects of internal and/or external magnetic fields comprising the step of electroplating said sub-part with a nickel-iron alloy.
Claim 7
Dependent Claim
33 words
The method of claim 4 wherein said sub-part is electroplated by immersing a surface of said sub-part in a bath comprising a ratio by weight of 12-14 parts nickel to 1 part iron.
Claim 8
Dependent Claim
29 words
The method of claim 5 wherein said bath includes a brightener in the proportion of 4% by volume, and a levelling agent in the proportion of 3% by volume.
References Cited (Backward Citations)
No citation records indexed.
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