Patent US2874023A successfully refreshed from Google Patents.
Patent US4240520A successfully refreshed from Google Patents.
US4240520A
Expired / Lapsed
US
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Hi rise escape tunnels and slide
Assignee: Individual
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Filing: 1979-01-29
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Granted: 1980-12-23
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Expires: 1999-01-29
Abstract
Abstract A fire escaping tunnel for use on high use buildings, including an extendable accordian pleated tubing made of nylon or canvas fabric padded on its inner side, a ring at its upper end attachable to an escape opening of a building, a lower end of the tubing having a soft landing pad, and an exit doorway so a person sliding or lowered down the tunnel can step out upon a ground or street level.
Inventors
- 👤 Janet L. LaGrone
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
A high rise escape tunnel, comprising in combination, a collapsible tubing of fireproof fabric, a padding on its inner side a plurality of spaced apart metal rings mainted around an outer side of said tubing, an entry opening at an upper end of said tubing, an exit doorway near a lower end, a soft pad at said lower end for resting on a ground, said pad encompassed by a weighted ring for contacting the ground, means for connecting said entry opening to a building exit whereby said tunnel assumes curved shape having increasing inclination towards the ground, said rings having equal diameter whereby said tubing fabric sags inwardly between the rings to provide a smooth undulating curvate sliding surface in further combination with means mounted on the tubing for contracting the tubing longitudinally for storage purposes.
Claim 2
Dependent Claim
136 words
A high rise escape tunnel, comprising in combination, a collapsible tubing of fireproof fabric, a padding on its inner side a plurality of spaced apart metal rings mainted around an outer side of said tubing, an entry opening at an upper end of said tubing, an exit doorway near a lower end, a soft pad at said lower end for resting on a ground, said pad encompassed by a weighted ring for contacting the ground, means for connecting said entry opening to a building exit whereby said tunnel assumes curved shape having increasing inclination towards the ground, said rings having equal diameter whereby said tubing fabric sags inwardly between the rings to provide a smooth undulating curvate sliding surface in further combination with means mounted on the tubing for contracting the tubing longitudinally for storage purposes.
Claim 3
Dependent Claim
31 words
A tunnel as in claim 1 in further combination with a flexible spiral slide mounted in said tubing having half a diameter width including a rope ladder provided along the tubing.
Claim 4
Dependent Claim
28 words
A tunnel as in claim 1 in combination with chair sling supported by means mounted in the tunnel and the first said means for lowering the chair sling.
References Cited (Backward Citations)
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Cited
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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) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |