Patent US4755422A successfully refreshed from Google Patents.
US4755422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayered electronics protection system
Assignee: RTX Corp
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Filing: 1986-04-17
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Granted: 1988-07-05
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Expires: 2006-04-17
Abstract
Abstract A multilayered electronics protection system includes a first ablator layer providing thermal protection that is sprayed on to a non-metallic surface of an electronics enclosure. A second ablator layer comprised of highly conductive material is sprayed on to the first ablator layer and provides protection against strategic environmental threats.
Inventors
- 👤 Stephen E. Headrick
- 👤 Charles E. Cataldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:39
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/009; H05K5/00; H05K5/02; H05K5/0209; H05K5/0213; Y; Y10; Y10S; Y10S169/00; Y10S169/02; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/11; Y10T442/112; Y10T442/129
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
54 words
A multilayered electronics protection system affixed to a non-metallic surface enclosing electronics comprising: first ablator layer means applied to the non-metallic surface, bonding thereto, providing thermal protection; second ablator layer means applied on and adhering to said first ablator layer, including highly conductive material providing protection against strategic environmental threats and additional thermal protection.
Claim 2
Dependent Claim
54 words
A multilayered electronics protection system affixed to a non-metallic surface enclosing electronics comprising: first ablator layer means applied to the non-metallic surface, bonding thereto, providing thermal protection; second ablator layer means applied on and adhering to said first ablator layer, including highly conductive material providing protection against strategic environmental threats and additional thermal protection.
Claim 3
Dependent Claim
17 words
The multilayered electronics protection system of claim 1, wherein said first and second ablator layers are sprayable.
Claim 4
Dependent Claim
16 words
The multilayered electronics protection system of claim 1, wherein said highly conductive material comprises metal powder.
Claim 5
Dependent Claim
22 words
The multilayered electronics protection system of claim 3, wherein said metal powder is selected from the group zinc, copper, silver and aluminum.
Claim 6
Dependent Claim
31 words
The multilayered electronics protection system of claim 1, wherein said highly conductive material comprises a combination powder including at least two elements selected from the group copper, silver, aluminum and zinc.
Claim 7
Dependent Claim
68 words
A fibrous multilayered electronics protection system affixed to a non-metallic surface enclosing electronics hardware comprising: first ablator layer means applied to the non-metallic surface, bonding thereto, providing thermal protection; high conductivity fiber means positioned on said first ablator layer means providing protection against strategic environmental threats, and; second ablator layer means applied to said first ablator means and said high conductivity fiber means, bonding thereto, providing thermal protection.
Claim 8
Dependent Claim
68 words
A fibrous multilayered electronics protection system affixed to a non-metallic surface enclosing electronics hardware comprising: first ablator layer means applied to the non-metallic surface, bonding thereto, providing thermal protection; high conductivity fiber means positioned on said first ablator layer means providing protection against strategic environmental threats, and; second ablator layer means applied to said first ablator means and said high conductivity fiber means, bonding thereto, providing thermal protection.
Claim 9
Dependent Claim
16 words
The fibrous multilayered electronics protection system of claim 6, wherein said high conductivity fiber comprises aluminum.
Claim 10
Dependent Claim
16 words
The fibrous multilayered electronics protection system of claim 6, wherein said high conductivity fiber comprises copper.
Claim 11
Dependent Claim
17 words
The fibrous multilayered electronics protection system of claim 6, wherein said high conductivity fiber comprises metallic screening.
Claim 12
Dependent Claim
18 words
The fibrous multilayered electronics protection system of claim 6, wherein said first and second ablator layers are sprayable.
Claim 13
Dependent Claim
38 words
The fibrous multilayered electronics protection system of claim 6, wherein said first and second ablator layers comprise phenolic microspheres, glass microspheres, chopped glass fibers, milled glass fibers, filler, ground cork, epoxy resin catalyst and epoxy resin curing agent.
Claim 14
Dependent Claim
19 words
The fibrous multilayered electronics protection system of claim 6, wherein said second ablator layer additionally comprises high conductivity material.
Claim 15
Dependent Claim
18 words
The fibrous multilayered electronics protection system of claim 12, wherein said high conductivity material comprises a metal powder.
Claim 16
Dependent Claim
24 words
The fibrous multilayered electronics protection system of claim 13, wherein said high metal power is selected from the goup zinc, copper, silver or aluminum.
Claim 17
Dependent Claim
33 words
The fibrous multilayered electronics protection system of claim 13, wherein said high conductivity material compries a combination metal powder including at least two elements selected from the group zinc, copper, silver or aluminum.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |