Patent US4327818A successfully refreshed from Google Patents.
US4327818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sky shepherd 1
Assignee: Individual
•
Filing: 1980-02-07
•
Granted: 1982-05-04
•
Expires: 2000-02-07
Abstract
Abstract An apparatus for persons to be lowered to a ground from upper stories of buildings, in case of a fire, or the like; the device including a frame suspended outside a window, two heels of ropes supported on the frame, a seat on the end of each rope, one rope winding up automatically as the other unwinds, and a speed-damping mechanism to retard too fast descent of a lowering person.
Inventors
- 👤 Brian Tepsa
- 👤 George Spector
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:19
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/06; A62B1/08; A62B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A fire escape device, comprising in combination a frame and means for supporting said frame on a structure, including, a rotatable, horizontal shaft through said frame, a pair of spaced parallel drums affixed on said shaft, a cable wound oppositely on each said drum in further combination with a damping mechanism and a clutch, wherein said mechanism is mounted on one side of said frame and the clutch on the opposite side with the drums therebetween, said mechanism being operatively connected to said shaft, wherein said means comprise a support mounted within said structure and a cable supporting yoke pivotally mounted on said frame extending outward of said structure supporting said cables in further combination with a retainer for maintaining said yoke externally of said structure wherein said damping mechanism comprises a crank connected to said shaft further including hydraulic cylinder pistons engaging said crank for retardation purposes.
Claim 2
Dependent Claim
148 words
A fire escape device, comprising in combination a frame and means for supporting said frame on a structure, including, a rotatable, horizontal shaft through said frame, a pair of spaced parallel drums affixed on said shaft, a cable wound oppositely on each said drum in further combination with a damping mechanism and a clutch, wherein said mechanism is mounted on one side of said frame and the clutch on the opposite side with the drums therebetween, said mechanism being operatively connected to said shaft, wherein said means comprise a support mounted within said structure and a cable supporting yoke pivotally mounted on said frame extending outward of said structure supporting said cables in further combination with a retainer for maintaining said yoke externally of said structure wherein said damping mechanism comprises a crank connected to said shaft further including hydraulic cylinder pistons engaging said crank for retardation purposes.
References Cited (Backward Citations)
US526385A
Cited
US1625221A
Cited
US728145A
Cited
US1206676A
Cited
US1528803A
Cited
US2561832A
Cited
US2502896A
Cited
US3893541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |