Patent US3893541A successfully refreshed from Google Patents.
US3893541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window escapes
Assignee: Individual
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Filing: 1974-10-29
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Granted: 1975-07-08
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Expires: 1994-10-29
Abstract
Abstract Escape through the window of a burning building is facilitated by a life line harnessed to the escapee; the life line is attached to a reel having its periphery (not its center) supported for rotation inside a split housing, all arranged to neatly fit the wall of an apartment; descent at a safe speed is assured by cylinder-and-rod type shock absorbers operated by the rotating reel.
Inventors
- 👤 Donald A Servais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:53
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/08; A62B1/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
Apparatus facilitating escape from the window of an upper story dwelling comprising a housing, a reel inside the housing containing a wound length of life line, a body-support harness attached to the free end of the life line, shock absorber means comprising a rod and a fluid-charged cylinder together having opposed ends, one such end being anchored pivotally to the interior of the housing and the other end being pivotally attached in eccentric relation to the reel, and guide means secured in spaced relation to the interior of the housing and rotatably supporting the periphery of the reel.
Claim 2
Dependent Claim
98 words
Apparatus facilitating escape from the window of an upper story dwelling comprising a housing, a reel inside the housing containing a wound length of life line, a body-support harness attached to the free end of the life line, shock absorber means comprising a rod and a fluid-charged cylinder together having opposed ends, one such end being anchored pivotally to the interior of the housing and the other end being pivotally attached in eccentric relation to the reel, and guide means secured in spaced relation to the interior of the housing and rotatably supporting the periphery of the reel.
Claim 3
Dependent Claim
60 words
Apparatus according to claim 1 in which the housing consists of substantially identical complemental sections joined along a parting line, the circumference of the reel being centered substantially on the parting line of the housing sections, and each of the guides consisting of two substantially identical complemental parts respectively attached to the housing sections at the parting line edges thereof.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 1 in which the life line is a flat steel strap, and in which the harness has securing elements comprising a link and a separate spring-biased catch.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 in which the harness is stored inside the housing.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 1 in which said guide means includes a plurality of guides.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |