Patent US4595074A successfully refreshed from Google Patents.
US4595074A
Expired / Lapsed
US
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Stocking-like escape device
Assignee: MIKKELSEN TRYGVE
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Filing: 1982-12-30
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Granted: 1986-06-17
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Expires: 2002-12-30
Abstract
Abstract Stocking-like escape device comprising a stocking of canvas material or similar material. The stocking which preferably is made of netting permitting the through passage of wind, is with axial intervals provided with an annular reinforcing element for stretching out the stocking. The stocking is connected to two or more axially extending lines which are connected to the reinforcing elements and preferably to each reinforcing element on diametrically opposite sides thereof.
Inventors
- 👤 Svein Nordtvedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:32
CPC Classifications
A; A62; A62B; A62B1/00; A62B1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A chute forming escape device comprising a tubular member of at least partially elastically yielding material capable of permitting the through passage of wind therethrough; a plurality of annular reinforcing members spaced longitudinally of said tubular member; longitudinally extending support ropes connected with said reinforcing members; and means for braking the speed of passage of a person passing through said tubular member, each braking means being secured to and extending obliquely downwards between a pair of reinforcing members to form one side portion of said tubular member while extending transversley of a lower one of said pair of reinforcing members to define an access opening to said tubular member.
Claim 2
Dependent Claim
109 words
A chute forming escape device comprising a tubular member of at least partially elastically yielding material capable of permitting the through passage of wind therethrough; a plurality of annular reinforcing members spaced longitudinally of said tubular member; longitudinally extending support ropes connected with said reinforcing members; and means for braking the speed of passage of a person passing through said tubular member, each braking means being secured to and extending obliquely downwards between a pair of reinforcing members to form one side portion of said tubular member while extending transversley of a lower one of said pair of reinforcing members to define an access opening to said tubular member.
Claim 3
Dependent Claim
46 words
A chute-forming escape device as set forth in claim 1 wherein each braking means has an elastically yielding fastening means at a lower edge secured to said lower one of said reinforcing members for stretching said braking means across a central portion of said tubular member.
Claim 4
Dependent Claim
27 words
A chute-forming escape device as set forth in claim 1 wherein said braking means form a zig-zag path between said reinforcing members longitudinally of said tubular member.
Claim 5
Dependent Claim
101 words
An escape device comprising a stocking to be suspended in a downward manner; a plurality of annular reinforcing elements arranged at spaced apart intervals along the length of said stocking; at least one pair of diametrically opposed lines secured to said reinforcing elements for suspending said stocking, and a plurality of pieces defining a zig-zag shaped passage through said stocking, each said piece being connected to and extending obliquely downwards and inwards into said stocking from an upper reinforcing element to a transverse center line of a lower reinforcing element and defining an access opening to the interior of said stocking.
Claim 6
Dependent Claim
101 words
An escape device comprising a stocking to be suspended in a downward manner; a plurality of annular reinforcing elements arranged at spaced apart intervals along the length of said stocking; at least one pair of diametrically opposed lines secured to said reinforcing elements for suspending said stocking, and a plurality of pieces defining a zig-zag shaped passage through said stocking, each said piece being connected to and extending obliquely downwards and inwards into said stocking from an upper reinforcing element to a transverse center line of a lower reinforcing element and defining an access opening to the interior of said stocking.
Claim 7
Dependent Claim
18 words
An escape device as set forth in claim 4 wherein said stocking is made of a netting material.
Claim 8
Dependent Claim
22 words
An escape device as set forth in claim 4 wherein said stocking is foldable into said reinforcing elements in a compact manner.
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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) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |