Patent US4166878A successfully refreshed from Google Patents.
US4166878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine internal insulation comprising metallic mesh--restrained ceramic fiber layer
Assignee: Caterpillar Inc
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Filing: 1978-03-02
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Granted: 1979-09-04
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Expires: 1998-03-02
Abstract
Abstract The invention is concerned with an improved individually replaceable insulation pack comprising a high temperature resistant thin flexible metallic sheet having a porous insulation blanket formed of interlaced ceramic fibers held against a side thereof and including a fine mesh of wire covering the surface of the blanket which is not adjacent to the sheet and holding the blanket against the sheet. The blanket does not contain a binder and is not bonded to the sheet.
Inventors
- 👤 Leroy R. Thompson
- 👤 Edward G. Meints
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:33
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/24; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
An improved replaceable insulation pack comprising a high temperature resistant relatively flexible and thin metallic sheet having held against a first side thereof, a porous insulation blanket formed of interlaced ceramic fibers with a fine mesh of metal attached to said sheet and covering the surface of said blanket which is not abutted to said sheet, said mesh serving to hold said blanket against said sheet, said blanket not being bonded to said sheet by a bonding agent and a binder not being used in said blanket to bind said fibers to one another.
Claim 2
Dependent Claim
94 words
An improved replaceable insulation pack comprising a high temperature resistant relatively flexible and thin metallic sheet having held against a first side thereof, a porous insulation blanket formed of interlaced ceramic fibers with a fine mesh of metal attached to said sheet and covering the surface of said blanket which is not abutted to said sheet, said mesh serving to hold said blanket against said sheet, said blanket not being bonded to said sheet by a bonding agent and a binder not being used in said blanket to bind said fibers to one another.
Claim 3
Dependent Claim
15 words
An improved pack as in claim 1, wherein said fibers comprise an aluminosilicate fire clay.
Claim 4
Dependent Claim
16 words
An improved pack as in claim 1, wherein said sheet is formed of a spring metal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-03 | 1983-03-05 | 1983-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-03 | 1987-03-05 | 1987-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-03 | 1991-03-05 | 1991-09-04 | $7700.00 | Window Closed / Lapsed |