Patent US3910377A successfully refreshed from Google Patents.
US3910377A
Expired / Lapsed
US
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Life saving escape chute
Assignee: Lawrence Peska Associates Inc
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Filing: 1974-08-08
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Granted: 1975-10-07
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Expires: 1994-08-08
Abstract
Abstract The fire escape chute for a building comprising an elongated metal chute having a plastic covering curved over top thereof. The plastic covering engages the metal chute along the edges thereof to prevent entrance of smoke.
Inventors
- 👤 Theodore R Zamorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:08
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
47 words
A fire escape chute for a building comprising an elongated metal slide having an elongated solid translucent plastic covering carried over substantially the entire length of the slide, said plastic covering engaging said metal slide along the edges thereof in sealing engagement to prevent entrance of smoke.
Claim 2
Dependent Claim
47 words
A fire escape chute for a building comprising an elongated metal slide having an elongated solid translucent plastic covering carried over substantially the entire length of the slide, said plastic covering engaging said metal slide along the edges thereof in sealing engagement to prevent entrance of smoke.
Claim 3
Dependent Claim
31 words
The apparatus as described in claim 1 wherein said slide has an arcuate cross-section and has a flange on each side extending radially toward the center of curvature of said slide.
Claim 4
Dependent Claim
57 words
The apparatus as described in claim 2 wherein said plastic covering has an arcuate cross-section and has a flange on each edge thereof extending radially away from the center of curvature thereof and interlocking under the flanges of the slide, the covering being flexed by said interlocking of flanges to urge the interlocking flanges into sealing engagement.
Claim 5
Dependent Claim
34 words
The apparatus as described in claim 3 wherein said chute is disposed with the geometric axis thereof forming a 60* angle with respect to the side of the building on which it is mounted.
Claim 6
Dependent Claim
23 words
The apparatus describing claim 3 wherein the radius of curvature of the slide is greater than the radius of curvature of the cover.
Claim 7
Dependent Claim
18 words
The apparatus as described in claim 1 wherein radially extending flanges join said plastic covering and said slide.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |