US3768593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indoor escape device
Assignee: Individual
•
Filing: 1971-03-15
•
Granted: 1973-10-30
•
Expires: 1991-03-15
Abstract
Abstract The present invention is directed to an indoor escape device which allows the evacuees to pass through a manhole in a slab by which two stories are separated thereby escaping swiftly to a safety story or zone one after another without going from the indoors to the outdoors.
Inventors
- 👤 H Naka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:24
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20; A62C; A62C2/00; A62C2/06; A62C2/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
An escape system for positioning between the floor of one story of a building and the ceiling of a story below the firstmentioned story, said system comprising: an escape means including a first frame means adapted to be positioned in a hole in the floor of the one story and a second frame means adapted to be positioned at the other end of said hole in the ceiling of the story below said firstmentioned story, an adjustable bellows type shell means extending between said first and said second frame means forming an escape passage for an evacuee, a cover member positioned over at least one of said frames for closing the hole when the system is not in use, and an escape unit secured adjacent said escape means and adapted to extend through at least part of said shell means when said cover member is open for use by the evacuee in passing through said escape means.
Claim 2
Dependent Claim
157 words
An escape system for positioning between the floor of one story of a building and the ceiling of a story below the firstmentioned story, said system comprising: an escape means including a first frame means adapted to be positioned in a hole in the floor of the one story and a second frame means adapted to be positioned at the other end of said hole in the ceiling of the story below said firstmentioned story, an adjustable bellows type shell means extending between said first and said second frame means forming an escape passage for an evacuee, a cover member positioned over at least one of said frames for closing the hole when the system is not in use, and an escape unit secured adjacent said escape means and adapted to extend through at least part of said shell means when said cover member is open for use by the evacuee in passing through said escape means.
Claim 3
Dependent Claim
25 words
An escape system as claimed in claim 1 in which said shell means has a coating of a heat resistive material on the exterior thereof.
Claim 4
Dependent Claim
26 words
An escape system as claimed in claim 1 in which said shell means has a coating of an elastic buffer material on the interior surface thereof.
Claim 5
Dependent Claim
165 words
An escape system for use in a multi-story building comprising a plurality of escape means adapted to be positioned between the floor and ceiling of each of at least the majority of said stories, each of said escape means including a first frame means adapted to be positioned in a hole in the floor of one story and a second frame means adapted to be positioned at the other end of said hole in the ceiling of the story below said first-mentioned story, an adjustable bellows type shell means extending between said first and said second frame means forming an escape passage for an evacuee, a cover member positioned over at least one of said frames for closing the hole when the system is not in use, and an escape unit secured adjacent said escape means and adapted to extend through at least part of said shell means when said cover member is open for use by the evacuee in passing through said escape means.
Claim 6
Dependent Claim
165 words
An escape system for use in a multi-story building comprising a plurality of escape means adapted to be positioned between the floor and ceiling of each of at least the majority of said stories, each of said escape means including a first frame means adapted to be positioned in a hole in the floor of one story and a second frame means adapted to be positioned at the other end of said hole in the ceiling of the story below said first-mentioned story, an adjustable bellows type shell means extending between said first and said second frame means forming an escape passage for an evacuee, a cover member positioned over at least one of said frames for closing the hole when the system is not in use, and an escape unit secured adjacent said escape means and adapted to extend through at least part of said shell means when said cover member is open for use by the evacuee in passing through said escape means.
References Cited (Backward Citations)
NL34729C
Cited
US876354A
Cited
CH198072A
Cited
GB647747A
Cited
US2833001A
Cited
US3012375A
Cited
AT203697B
Cited
US3258032A
Cited
DE1273785B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |