§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US5318855A Expired / Lapsed US ⏱️ 0.0 years remaining

Electronic assembly with flexible film cover for providing electrical and environmental protection

Assignee: Lockheed Martin Corp
•
Filing: 1992-08-25
•
Granted: 1994-06-07
•
Expires: 2012-08-25
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A flexible metallized polymer film cover provides environmental protection of electronic assemblies such as circuit card assemblies which are susceptible to external environmental factors which can impede functional performance and reduce reliability. The fully integrated cover provides this protection and also allows for circuit repair and rework in such a manner as to make cover removal and reseal economically attractive. The use of a metallized polymer film in the form of a two layer film, with two intimately bonded layers one being electrically insulative and the other metallic, provides environmental and electrical protection of the enclosed assembly. The variables of film materials and thicknesses allow for specific cover designs to be fabricated to meet various requirements for assembly protection. The flexible film nature of the cover allows for strict conformance to underlying devices and less dimension and weight for the assembly. The cover can also be easily and quickly removed from the assembly to allow repair of underlying devices. The cost of these films also makes replacement of the film cover attractive.

Inventors

  • 👤 Andrew Z. Glovatsky
  • 👤 Michael A. Mele
  • 👤 Patrick M. Scott

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 13:50
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; B32B2307/00; B32B2307/20; B32B2307/206; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2457/00; B32B2457/08; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24917; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 139 words
An electronic assembly comprising: a frame including a bottom portion; a circuit card assembly being positioned on said bottom portion of said frame, said circuit card assembly located within and substantially surrounded by said frame, said circuit card assembly including a circuit card having electronic devices located thereon; and a flexible film cover including a metal layer and an electrically insulative layer bonded to said metal layer, said flexible film cover being hermetically sealed to said frame to provide a cover for said circuit card assembly and to provide environmental and electrical protection for said circuit card assembly, said insulative layer of said film cover facing said electronic devices and in physical contact therewith, said flexible film cover substantially conforming to the shape of said electronic devices, said frame and flexible film cover completely enclosing said circuit card assembly.
Claim 2
Dependent Claim 139 words
An electronic assembly comprising: a frame including a bottom portion; a circuit card assembly being positioned on said bottom portion of said frame, said circuit card assembly located within and substantially surrounded by said frame, said circuit card assembly including a circuit card having electronic devices located thereon; and a flexible film cover including a metal layer and an electrically insulative layer bonded to said metal layer, said flexible film cover being hermetically sealed to said frame to provide a cover for said circuit card assembly and to provide environmental and electrical protection for said circuit card assembly, said insulative layer of said film cover facing said electronic devices and in physical contact therewith, said flexible film cover substantially conforming to the shape of said electronic devices, said frame and flexible film cover completely enclosing said circuit card assembly.
Claim 3
Dependent Claim 16 words
The electronic assembly of claim 1 wherein said electrically insulative layer is comprised of a polymer.
Claim 4
Dependent Claim 24 words
The electronic assembly of claim 1 wherein the thickness of said metal layer is substantially similar to the thickness of said electrically insulative layer.
Claim 5
Dependent Claim 18 words
The electronic assembly of claim 3 wherein said flexible film cover has a thickness of about 0.002 inch.
Claim 6
Dependent Claim 13 words
The electronic assembly of claim 1 wherein said frame comprises a metal frame.
Claim 7
Dependent Claim 20 words
The electronic assembly of claim 5 wherein said metal layer of said cover is metallurgically bonded to said metal frame.
Claim 8
Dependent Claim 19 words
The electronic assembly of claim 5 wherein said metal layer of said cover is welded to said metal frame.

References Cited (Backward Citations)

US3436467A Cited
US3512946A Cited
US3837894A Cited
US4514586A Cited
US4926239A Cited
US4708905A Cited
US4755630A Cited
US4749625A Cited
US4814943A Cited
US4980223A Cited
US4959752A Cited
US5055967A Cited
US5005106A Cited
US4965408A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-06-06 1997-12-06 1998-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-06-06 2001-12-06 2002-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-06-06 2005-12-06 2006-06-07 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag