US4295543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire escape apparatus
Assignee: Individual
•
Filing: 1980-02-06
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Granted: 1981-10-20
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Expires: 2000-02-06
Abstract
Abstract A fire escape apparatus comprises a vertically extending channel member defining a channel into which opens a slot formed between flanges constituting a front wall of the channel member. Rows of staggered projections within the channel are formed by bolts extending between the flanges and a rear wall of the channel member. A harness for supporting a person escaping in the event of fire or other emergency is suspended from a T-shaped support including a cross-piece, and an upright. In use, the cross-piece and upright are introduced into the channel through the slot. A lug on the upright projects through the slot and limits side-to-side movement as the harness support descends under the weight of the person escaping, the cross-piece co-operating with the bolts to perform a stepping movement.
Inventors
- 👤 Finlay M. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:22
CPC Classifications
A; A62; A62B; A62B35/00; A62B35/0043; A62B35/0062; A62B1/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
In a building, a fire escape apparatus comprising a vertically extending channel member secured to a wall of the building, the channel member defining a channel into which opens a vertical slot, two vertical rows of projections within the channel, each row being disposed adjacent a respective side of the slot and the projections in each row being staggered with respect to those in the other, and at least one harness support capable of being introduced into the channel through the slot and of co-operating with the projections so as to move step-wise down the channel member under the effect of the load applied to the harness support, said harness support including a "T"-shaped member having a cross-piece surmounting an upright, the upright having a projection to which the harness is attached.
Claim 2
Dependent Claim
132 words
In a building, a fire escape apparatus comprising a vertically extending channel member secured to a wall of the building, the channel member defining a channel into which opens a vertical slot, two vertical rows of projections within the channel, each row being disposed adjacent a respective side of the slot and the projections in each row being staggered with respect to those in the other, and at least one harness support capable of being introduced into the channel through the slot and of co-operating with the projections so as to move step-wise down the channel member under the effect of the load applied to the harness support, said harness support including a "T"-shaped member having a cross-piece surmounting an upright, the upright having a projection to which the harness is attached.
Claim 3
Dependent Claim
47 words
A fire escape apparatus as claimed in claim 1, wherein the slot is defined between flanges which form a front wall of the channel member and the projections are formed by bolts which pass through holes in the flanges and in a rear of the channel member.
Claim 4
Dependent Claim
37 words
A fire escape apparatus as claimed in claim 1, wherein the width of the channel in the plane of the slot is substantially greater than the width of the channel perpendicular to the plane of the slot.
Claim 5
Dependent Claim
33 words
A fire escape apparatus as claimed in claim 1, wherein the projection of the harness support passes through the slot during operation of the apparatus and limits side-to-side movement of the harness support.
Claim 6
Dependent Claim
130 words
In a building, an escape apparatus comprising a vertically extending channel member having a rear wall and a front wall defined by flanges between which is formed a slot, a row of projections disposed within the channel behind each flange, the projections in each row being staggered relative to those in the other, and a harness support member of "T"-shape with a cross-piece for co-operation with the projections, an upright connected to the cross-piece and a lug projecting from the upright and adapted to co-operate with the edges of the flanges by which the slot is defined, thereby to permit limited lateral movement of the harness support whereby the harness support may co-operate with the projections to perform a stepping movement under the action of weight applied to said support.
Claim 7
Dependent Claim
130 words
In a building, an escape apparatus comprising a vertically extending channel member having a rear wall and a front wall defined by flanges between which is formed a slot, a row of projections disposed within the channel behind each flange, the projections in each row being staggered relative to those in the other, and a harness support member of "T"-shape with a cross-piece for co-operation with the projections, an upright connected to the cross-piece and a lug projecting from the upright and adapted to co-operate with the edges of the flanges by which the slot is defined, thereby to permit limited lateral movement of the harness support whereby the harness support may co-operate with the projections to perform a stepping movement under the action of weight applied to said support.
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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |