US4778031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escape chute
Assignee: DYNA RESCUE CHUTE Ltd
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Filing: 1987-12-16
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Granted: 1988-10-18
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Expires: 2007-12-16
Abstract
Abstract The escape device of the present invention comprises an escape chute having an outer and an inner tube, the outer tube consisting of heat resistant material which surrounds the inner tube, the inner tube having a panel extending over a major portion such that an object in the chute contacting the panel will have its rate of descent retarded. A mounting bracket is associated with the upper end of the chute, the inner tube being attached to the mounting bracket such that a tapered entry from the upper end of the chute to a point below the upper end of the chute is formed. The outer tube is attached to the mounting bracket independent of the inner tube, so that the outer tube does not have to absorb load-carrying stress associated with objects descending in the chute. An air gap for insulation and ventilation is formed between the inner and outer tube.
Inventors
- 👤 Yoram Curiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:08
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
176 words
An escape device comprising a tubular escape chute having an upper end and a lower end, said chute having at least one outer tube and at least one inner tube, said outer tube extending substantially from said upper end to said lower end made of a heat resistant material and surrounding said inner tube, said inner tube extending substantially from said upper end to said lower end having a panel that extends over a major portion of said chute's length, mounting means having a mounting bracket supporting said upper end of said chute, said inner tube attached to said mounting bracket such that a tapered entry is provided in said upper end of said chute, and said outer tube attached to said mounting bracket independently of said inner tube whereby said outer tube does not have to support load-carrying stress associated with objects descending in said chute, and whereby an air gap is formed between said inner and outer tube so that insulation of said inner tube and replenishment of air in said chute is facilitated.
Claim 2
Dependent Claim
176 words
An escape device comprising a tubular escape chute having an upper end and a lower end, said chute having at least one outer tube and at least one inner tube, said outer tube extending substantially from said upper end to said lower end made of a heat resistant material and surrounding said inner tube, said inner tube extending substantially from said upper end to said lower end having a panel that extends over a major portion of said chute's length, mounting means having a mounting bracket supporting said upper end of said chute, said inner tube attached to said mounting bracket such that a tapered entry is provided in said upper end of said chute, and said outer tube attached to said mounting bracket independently of said inner tube whereby said outer tube does not have to support load-carrying stress associated with objects descending in said chute, and whereby an air gap is formed between said inner and outer tube so that insulation of said inner tube and replenishment of air in said chute is facilitated.
Claim 3
Dependent Claim
21 words
The device of claim 1, including said mounting bracket having a plurality of substantially rigid mounting members forming a rectangular shape.
Claim 4
Dependent Claim
11 words
The device of claim 2, including said mounting members being tubular.
Claim 5
Dependent Claim
20 words
The device of claim 1, including said outer tube having a plurality of flap means formed at said upper end.
Claim 6
Dependent Claim
21 words
The device of claim 4, including said outer tube flap means having a plurality of outer tube bolt hole row means.
Claim 7
Dependent Claim
24 words
The device of claim 5, including said outer tube bolt hole row means having a plurality of outer tube bolt holes being defined thereon.
Claim 8
Dependent Claim
37 words
The device of claim 6, including each said outer tube flap means having a first outer tube bolt hole row means and a second outer tube bolt hole row means in spaced apart relationship to each other.
Claim 9
Dependent Claim
64 words
The device of claim 7, including said first outer tube bolt hole row means being positioned substantially parallel to said second outer tube bolt hole row means, whereby said outer tube bolt holes of said first outer tube bolt hole row means and said outer tube bolt holes of said second outer tube bolt hole row means are substantially longitudinally aligned with each other.
Claim 10
Dependent Claim
70 words
The device of claim 8, including said outer tube being mounted on said mounting means by the upper end of said outer tube member being wrapped around said mounting bracket means, whereby said outer tube first bolt hole row means are aligned with said second outer tube bolt hole row means and said outer tube bolt holes of said outer tube first and second bolt hole row means are aligned.
Claim 11
Dependent Claim
16 words
The device of claim 9, including fastener means being placed through said outer tube bolt holes.
Claim 12
Dependent Claim
18 words
The device of claim 4, including said flaps being formed by a plurality of attached outer tube members.
Claim 13
Dependent Claim
19 words
The device of claim 11, including said outer tube members being attached by stitching together adjacent outer tube members.
Claim 14
Dependent Claim
11 words
The device of claim 12, including said stitching being Kelvar thread.
Claim 15
Dependent Claim
13 words
The device of claim 13, including said stitching being reinforced with webbing material.
Claim 16
Dependent Claim
24 words
The device of claim 1, including said inner tube being a piece of material having a top end, a bottom end, and two sides.
Claim 17
Dependent Claim
29 words
The device of claim 15, including having said upper end provided with a plurality of cut lines, whereby said cut lines form a plurality of inner tube flap means.
Claim 18
Dependent Claim
21 words
The device of claim 16, including said inner tube flap means having a plurality of inner tube bolt hole row means.
Claim 19
Dependent Claim
24 words
The device of claim 17, including said inner tube bolt hole row means having a plurality of inner tube bolt holes being defined thereon.
Claim 20
Dependent Claim
37 words
The device of claim 18, including each said inner tube flap means having a first inner tube bolt hole row means and a second inner tube bolt hole row means in spaced apart relationship to each other.
Claim 21
Dependent Claim
61 words
The device of claim 19, including said first inner tube bolt hole row means being positioned substantially parallel to said second inner tube bolt hole row means whereby said inner tube bolt holes of said first inner tube bolt hole row means and said inner tube bolt holes of said second inner tube bolt hole row means are substantially longitudinally aligned.
Claim 22
Dependent Claim
68 words
The device of claim 20, including said inner tube being mounted on said mounting means by the upper end of said inner tube being wrapped around said mounting bracket means whereby said first inner tube bolt row means are aligned with said second inner tube bolt hole row means and said inner tube bolt holes of said first and second inner tube bolt hole row means are aligned.
Claim 23
Dependent Claim
16 words
The device of claim 21, including fastener means being placed through said inner tube bolt holes.
Claim 24
Dependent Claim
31 words
The device of claim 1, including said panel being a friction-creating member, whereby an object descending in said chute and contacting said friction-creating panel will have its rate of descent retarded.
Claim 25
Dependent Claim
47 words
The device of claim 1, including 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 object passing through said chute will be in intimate resiliently maintained contact with said inner tube.
Claim 26
Dependent Claim
45 words
The device of claim 24, including said panel containing an elongated pleated zone and an elastic material secured to pleated zone for resisting opening of said pleats, whereby an object passing through said chute will be in intimate resiliently maintained contact with said inner tube.
Claim 27
Dependent Claim
47 words
The device of claim 1, including non-abrasive flap means consisting of a piece of material having an upper and lower end and two sides and positioned at the upper end of said chute, whereby wear and tear on said inner tube and said outer tube is resisted.
Claim 28
Dependent Claim
16 words
The device of claim 26, including said non-abrasive flap means being mounted on said mounting bracket.
Claim 29
Dependent Claim
25 words
The device of claim 27, including said upper end having an non-abrasive flap bolt hole row means having a plurality of non-abrasive flap bolt holes.
Claim 30
Dependent Claim
90 words
The device of claim 26, including said inner tube, outer tube, and non-abrasive flap means being mounted on said bracket by means of a strip of metal having a plurality of bolt holes into which are engaged fastener means, whereby said metal strip bolt holes align with said inner tube, outer tube, and non-abrasive flap bolt holes, and said fastener means going through said metal strip, inner tube, outer tube, and non-abrasive flap bolt means, and holding said inner tube, outer tube, and non-abrasive flap means onto said mounting bracket.
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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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |