Patent JPS6318607A successfully refreshed from Google Patents.
US5344280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact resistant fan case liner
Assignee: General Electric Co
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Filing: 1993-05-05
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Granted: 1994-09-06
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Expires: 2013-05-05
Abstract
Abstract A composite article includes a plurality of laminates each having structural fibers bonded in a matrix, and an adhesive film disposed between and bonding together adjacent ones of the laminates. In an exemplary embodiment, the laminates and the interleaved adhesive films form a facesheet which is joined to a core for forming an impact resistant fan case impact liner for a gas turbine engine. The impact liner may be integrated with a sound suppression liner.
Inventors
- 👤 Leslie L. Langenbrunner
- 👤 Richard T. Price
- 👤 Jack W. Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:17
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/045; F01; F01D; F01D21/00; F01D21/04; F01D21/045; F05; F05D; F05D2220/00; F05D2220/30; F05D2220/32; F05D2220/327; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24942; Y10T428/24992
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A fan case liner for a gas turbine engine comprising: an integral facesheet including a plurality of laminates each having structural fibers bonded in a matrix, and a toughened adhesive film disposed between and bonding together adjacent ones of said laminates; a first structural support core, and another adhesive film disposed between and bonding together said facesheet and said first core; a second structural support core; a first septum disposed between said first and second cores; additional adhesive films disposed between and bonding together said first septum and said first core, and said first septum and said second core; and wherein said first core has a first compressive strength, and said second core has a second compressive strength less than said first compressive strength.
Claim 2
Dependent Claim
124 words
A fan case liner for a gas turbine engine comprising: an integral facesheet including a plurality of laminates each having structural fibers bonded in a matrix, and a toughened adhesive film disposed between and bonding together adjacent ones of said laminates; a first structural support core, and another adhesive film disposed between and bonding together said facesheet and said first core; a second structural support core; a first septum disposed between said first and second cores; additional adhesive films disposed between and bonding together said first septum and said first core, and said first septum and said second core; and wherein said first core has a first compressive strength, and said second core has a second compressive strength less than said first compressive strength.
Claim 3
Dependent Claim
78 words
An linear according to claim 1 in the form of an annular fan case impact liner for a gas turbine engine adapted to be disposed downstream from a fan thereof, and wherein said facesheet faces radially inwardly for being impacted by foreign objects thrown from said fan during rotation thereof; said liner further comprising: a backsheet disposed radially outwardly of said second core; and another adhesive film disposed between and bonding together said backsheet and said second core.
Claim 4
Dependent Claim
11 words
A liner according to claim 2 wherein said facesheet is imperforate.
Claim 5
Dependent Claim
32 words
A liner according to claim 2 in combination with a sound suppression linear extending downstream from said impact liner and formed integrally therewith for suppressing sound generated by said fan during operation.
Claim 6
Dependent Claim
65 words
A liner combination according to claim 4 further comprising: a third structural support core; a second septum disposed between said second and third cores; additional adhesive films disposed between and bonding together said second septum and said second core, and said second septum and said third core; and said backsheet being joined by said adhesive film to said third core instead of said second core.
Claim 7
Dependent Claim
31 words
A linear combination according to claim 5 wherein said third core has a third compressive strength, said first compressive strength being greater than each of said second and third compressive strengths.
Claim 8
Dependent Claim
20 words
A liner combination according to claim 6 wherein said second compressive strength is substantially equal to said third compressive strength.
Claim 9
Dependent Claim
25 words
A liner combination according to claim 7 wherein all of said adhesive films are toughened and have a peel strength greater than about 7 kg/cm.
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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) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |