Patent US3567162A successfully refreshed from Google Patents.
US3567162A
Expired / Lapsed
US
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Fire stop insulation
Assignee: Boeing Co
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Filing: 1968-12-09
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Granted: 1971-03-02
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Expires: 1988-12-09
Abstract
Abstract An aircraft wall-fuselage construction containing an insulation material which material is formed in an accordion pleated or corrugated fashion and positioned with its ridges towards the interior wall and exterior wall or fuselage alternately. When a rupture, crack or puncture is caused in the wall structure by an aircraft crash, the insulation will unfold, cover and shield the caused opening so that flames, smoke and harmful fluids, etc. cannot enter the interior of the aircraft. A layer of fireresistant material has been added to the insulation so that a fire-stop shielding quality is obtained.
Inventors
- 👤 James M Lea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:51
CPC Classifications
B; B64; B64D; B64D45/00; B64C; B64C1/00; B64C1/38; B64D2045/009; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24686
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
141 words
A crash protective insulating wall structure for aircraft comprising: a. an outer wall forming said aircraft exterior skin; b. a plurality of spaced apart stringers connected to said skin; c. a plurality of spaced apart frames disposed in substantially perpendicular relationship with said stringers and connected therewith; e. an inner wall forming said aircraft interior surface; f. an insulation blanket having fire resistant qualities disposed between said frames in an accordion pleated fashion with its pleats parallel to said frames; and g. fastening means securing said interior inner wall together with said insulation blanket onto said frames so that said accordion pleated insulation material between said frames is adapted to unfold throughout limits imposed by said insulation blanket longitudinal length between two frames when said two frames are accidentally separated so that said aircraft interior remains shielded from said aircraft exterior.
Claim 2
Dependent Claim
141 words
A crash protective insulating wall structure for aircraft comprising: a. an outer wall forming said aircraft exterior skin; b. a plurality of spaced apart stringers connected to said skin; c. a plurality of spaced apart frames disposed in substantially perpendicular relationship with said stringers and connected therewith; e. an inner wall forming said aircraft interior surface; f. an insulation blanket having fire resistant qualities disposed between said frames in an accordion pleated fashion with its pleats parallel to said frames; and g. fastening means securing said interior inner wall together with said insulation blanket onto said frames so that said accordion pleated insulation material between said frames is adapted to unfold throughout limits imposed by said insulation blanket longitudinal length between two frames when said two frames are accidentally separated so that said aircraft interior remains shielded from said aircraft exterior.
Claim 3
Dependent Claim
43 words
A crash protective insulating wall structure for aircraft as claimed in claim 1, wherein said insulation material is provided with a weakened center portion disposed parallel to said pleats so that tearing control of said material under extreme frame separation circumstances is achieved.
References Cited (Backward Citations)
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |