US3566541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective barrier for products of combustion
Assignee: Rixson Inc
•
Filing: 1969-03-06
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Granted: 1971-03-02
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Expires: 1989-03-06
Abstract
Abstract A PROTECTIVE BARRIER FOR THE PRODUCTS OF COMBUSTION ADAPTED FOR INSTALLATION IN ANY STRUCTURAL ENVIRONMENT HAVING AN AIR GAP, OR IN WHICH AN AIR GAP WILL BE READILY CREATED IN RESPONSE TO FIRE. THE BARRIER FEATURES IN COMBINATION A MECHANICAL SMOKE SEAL, SUCH AS A SOFT COMPRESSIBLE NEOPRENE GASKET, AND A CLOSELY ASSOCIATED STRIP OR MASS OF INTUMESCENT FIRE RETARDANT COATING. THIS BARRIER MAY BE APPLIED TO A DOOR, DOOR FRAME AND THRESHOLD, WINDOWS, LOUVERS TRANSOMS, DAMPERS, CONTAINERS, AND SMOKE HATCH COVERS, FOR EXAMPLE, TO PREVENT THE READY PASSAGE OF THE PRODUCTS OF COMBUSTION, PARTICULARLY SMOKE, THROUGH ANY STRUCTURAL GAPS.
Inventors
- 👤 Gordon L Coulter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:00
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/948; E06; E06B; E06B5/00; E06B5/10; E06B5/16; E06B5/164; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2316
Claims Analysis
Total Claims: 0
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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) | 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 |