US3840425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reticulated fire protecting structure
Assignee: Avco Corp
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Filing: 1972-03-31
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Granted: 1974-10-08
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Expires: 1992-03-31
Abstract
Abstract The invention covers a reticulated fire protecting structure which is formed partially or fully from a composite material that expands on heating to close the openings of the reticulated structure.
Inventors
- 👤 T Finelli
- 👤 S Halpert
- 👤 J Newland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B15/00; B32B15/04; B32B15/08; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10311; B32B7/00; B32B7/04; B32B7/12; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/947; B32B2315/00; B32B2315/08; B32B2315/085; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24132; Y10T428/24149; Y10T428/24157; Y10T428/24273; Y10T428/24298
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A reticulated fire protecting structure comprising: a wall structure defining empty cell openings of said reticulated structure; and said wall structure being formed from a normally compressible material selected from a felt or a cellular material which has been physically compressed in thickness and held in a compressed state by a heat releasable chemical or mechanical bond, said material physically expanding to its normal thickness when released by heat to substantially fill the normally open cells and having an intumescent coating thereon.
Claim 2
Dependent Claim
82 words
A reticulated fire protecting structure comprising: a wall structure defining empty cell openings of said reticulated structure; and said wall structure being formed from a normally compressible material selected from a felt or a cellular material which has been physically compressed in thickness and held in a compressed state by a heat releasable chemical or mechanical bond, said material physically expanding to its normal thickness when released by heat to substantially fill the normally open cells and having an intumescent coating thereon.
Claim 3
Dependent Claim
22 words
A fire protecting structure as defined in claim 1 wherein said walls are formed entirely from the compressed or the composite material.
Claim 4
Dependent Claim
20 words
A fire protecting structure as defined in claim 1 wherein said compressed material is bonded to a fire resistant substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |