Patent US4815561A successfully refreshed from Google Patents.
US4815561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escape device
Assignee: Individual
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Filing: 1987-05-22
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Granted: 1989-03-28
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Expires: 2007-05-22
Abstract
Abstract An escape device in accordance with the present invention includes an escape opening through the outside wall of a building at second and higher floor level, such opening being tall enough to allow a person to walk through it. A ladder, comprised of at least two sections, is pivoted to structure in the opening and is extendable to reach ground level outside the building. The ladder is stowed in the escape opening and ready for instant use in an emergency.
Inventors
- 👤 Gary L. Ostrander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:04
CPC Classifications
E; E06; E06C; E06C9/00; E06C9/06; E06C9/08; E06C9/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
An escape device installed in a building at an elevated level above ground comprising an escape opening at floor level through the outside wall of said building; a ladder comprised of sections that telescope together, pivoted at one end to supports in said escape opening, and extendable to said ground or other support surface adjacent said building; an arm pivotable on said ladder that is actuated by a cable anchored to said building, said arm, when pivoted, engaging the outside wall of said building; and means for closing the outside and inside wall openings.
Claim 2
Dependent Claim
94 words
An escape device installed in a building at an elevated level above ground comprising an escape opening at floor level through the outside wall of said building; a ladder comprised of sections that telescope together, pivoted at one end to supports in said escape opening, and extendable to said ground or other support surface adjacent said building; an arm pivotable on said ladder that is actuated by a cable anchored to said building, said arm, when pivoted, engaging the outside wall of said building; and means for closing the outside and inside wall openings.
Claim 3
Dependent Claim
20 words
The escape device of claim 1 wherein said escape opening through the outside wall allows a person to walk therethrough.
Claim 4
Dependent Claim
22 words
The escape device of claim 1 wherein the closure in the outside wall of said building lies flush with the surface thereof.
Claim 5
Dependent Claim
22 words
The escape device of claim 1 wherein the closure for the inside wall opening is pivotally mounted to said inside wall surface.
Claim 6
Dependent Claim
115 words
An escape device installed in a building at an elevated level above ground movable from a stored position to an extended position, said device comprising: an escape opening at floor level through the outside wall of said building; a ladder pivoted at one end to supports in said escape opening and extendable to said ground or other support surface adjacent said building; means for closing the outside and inside wall opening; said ladder comprising sections that are hinged together; and each of said sections of said ladder having struts pivotally and lockably attached thereto, said struts being gravitationally movable from a stored position to a bracing position when said device is in said extended position.
Claim 7
Dependent Claim
115 words
An escape device installed in a building at an elevated level above ground movable from a stored position to an extended position, said device comprising: an escape opening at floor level through the outside wall of said building; a ladder pivoted at one end to supports in said escape opening and extendable to said ground or other support surface adjacent said building; means for closing the outside and inside wall opening; said ladder comprising sections that are hinged together; and each of said sections of said ladder having struts pivotally and lockably attached thereto, said struts being gravitationally movable from a stored position to a bracing position when said device is in said extended position.
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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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |