US4681186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escape chute
Assignee: DYNA RESCUE CHUTE Ltd
•
Filing: 1985-10-15
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Granted: 1987-07-21
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Expires: 2005-10-15
Abstract
Abstract An escape device having a tubular escape chute with upper and lower ends. At least one zipper extends longitudinally at least along a portion of the chute in order to provide for entry into or exit out of the chute at different elevations. The chute has a friction-creating material which extends through a major portion of the chute's longitudinal extent thereby permitting an individual descending in the chute and contacting the panel to have his or her rate of descent retarded. The inner chute may have inner pleats resiliently maintained by an elastic member. The chute may consist of an inner tube and an outer tube.
Inventors
- 👤 Thomas Leisman
- 👤 Jon Huston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:55
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
122 words
An escape device comprising a tubular escape chute having: an upper end and a lower end, zipper means extending generally longitudinally along at least a portion of said chute, and a friction-creating panel which extends over a major portion of the chute's longitudinal length, circumferentially less than the full circumference of the chute, and generally continuously from a portion generally adjacent to said upper end of said tubular escape chute to a portion generally adjacent to said lower end of said tubular escape chute, whereby entry into said chute or egress therefrom may be accomplished intermediate the upper end and lower end, and an individual descending in said chute and contacting said panel will have his or her rate of descent retarded.
Claim 2
Dependent Claim
122 words
An escape device comprising a tubular escape chute having: an upper end and a lower end, zipper means extending generally longitudinally along at least a portion of said chute, and a friction-creating panel which extends over a major portion of the chute's longitudinal length, circumferentially less than the full circumference of the chute, and generally continuously from a portion generally adjacent to said upper end of said tubular escape chute to a portion generally adjacent to said lower end of said tubular escape chute, whereby entry into said chute or egress therefrom may be accomplished intermediate the upper end and lower end, and an individual descending in said chute and contacting said panel will have his or her rate of descent retarded.
Claim 3
Dependent Claim
24 words
The escape device of claim 1 including said tubular escape chute having an inner tube and an outer tube secured to said inner tube.
Claim 4
Dependent Claim
19 words
The escape device of claim 2 including said friction-creating panels secured to the inner surface of said inner tube.
Claim 5
Dependent Claim
20 words
The escape device of claim 3 including said outer tube being composed at least in part of a heat-reflecting material.
Claim 6
Dependent Claim
12 words
The escape device of claim 4 including said outer tube being aluminized.
Claim 7
Dependent Claim
15 words
The escape device of claim 1 including said zipper means having at least two zippers.
Claim 8
Dependent Claim
19 words
The escape device of claim 6 including said zippers disposed within different longitudinal sections of said tubular escape chute.
Claim 9
Dependent Claim
15 words
The escape device of claim 7 including said zippers being generally aligned with each other.
Claim 10
Dependent Claim
13 words
The escape device of claim 1 including said tubular escape chute being flexible.
Claim 11
Dependent Claim
20 words
The escape device of claim 4 including said inner tube being composed of canvas and said outer tube containing aluminum.
Claim 12
Dependent Claim
54 words
An escape device comprising an elongated escape chute body having an inner tube, said inner tube having an elongated pleated zone, and an elastic material secured to said pleated zone for resisting opening of said pleats, whereby an individual passing through said chute will be in intimate resiliently maintained contact with said inner tube.
Claim 13
Dependent Claim
54 words
An escape device comprising an elongated escape chute body having an inner tube, said inner tube having an elongated pleated zone, and an elastic material secured to said pleated zone for resisting opening of said pleats, whereby an individual passing through said chute will be in intimate resiliently maintained contact with said inner tube.
Claim 14
Dependent Claim
25 words
The escape device of claim 11 including said pleated zone and said elastic material covering a portion of the circumferential extent of said inner tube.
Claim 15
Dependent Claim
18 words
The escape device of claim 12 including said pleated zone being longitudinally substantially coextensive with said inner tube.
Claim 16
Dependent Claim
18 words
The escape device of claim 13 including said elastic material being longitudinally substantially coextensive with said inner tube.
Claim 17
Dependent Claim
41 words
The escape device of claim 14 including zipper means extending generally longitudinally along at least a portion of said chute, whereby entry into said chute or egress therefrom may be accomplished intermediate the upper end and lower end of such chute.
Claim 18
Dependent Claim
17 words
The escape device of claim 15 including said chute having an inner tube and an outer tube.
Claim 19
Dependent Claim
21 words
The escape device of claim 15 including friction-creating material extending over a major portion of said inner tube is longitudinal extent.
Claim 20
Dependent Claim
17 words
The escape device of claim 17 including said friction creating material being at least one friction-creating panel.
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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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |