US5161479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated sail fabric
Assignee: North Sails Group Inc
•
Filing: 1992-04-07
•
Granted: 1992-11-10
•
Expires: 2012-04-07
Abstract
Abstract Liquid crystal polymer films are laminated to a textile substrate in a specific fashion to produce a fabric especially useful for sail panels.
Inventors
- 👤 Peter Mahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:33
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/34; B32B27/36; B32B7/00; B32B7/04; B32B7/12; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/067; B63H9/0678; B32B2305/00; B32B2305/55; B32B2367/00; B32B2605/00; B32B2605/12; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24777; Y10T428/24785; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3236; Y10T442/3252; Y10T442/326; Y10T442/3276; Y10T442/3854; Y10T442/3862
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
A laminated sail fabric comprising a textile layer having a plurality of spaced warp strands extending in the longitudinal direction, and a liquid crystal film layer having maximum strength in a given axial direction, said liquid crystal film being laminated to said textile with the axial direction thereof extending across said warp yarns.
Claim 2
Dependent Claim
53 words
A laminated sail fabric comprising a textile layer having a plurality of spaced warp strands extending in the longitudinal direction, and a liquid crystal film layer having maximum strength in a given axial direction, said liquid crystal film being laminated to said textile with the axial direction thereof extending across said warp yarns.
Claim 3
Dependent Claim
33 words
The laminated sail fabric of claim 1 wherein said textile is a woven material comprising warp yarns and fill yarns and wherein said warp yarns having a higher strength than said fill yarns.
Claim 4
Dependent Claim
23 words
The laminated sail fabric of claim 1 wherein said warp yarns are composed of aramid and said fill yarns are composed of polyester.
Claim 5
Dependent Claim
24 words
The laminated sail fabric of claim 1 wherein said axial direction of said liquid crystal film extends at right angles to said warp strands.
Claim 6
Dependent Claim
47 words
A sail prepared from the laminated sail fabric of claim 1, wherein the sail has lines of maximum stress and comprises a plurality of panels, wherein at least said panels are arranged such that the warp strands are generally in parallel with said lines of maximum stress.
Claim 7
Dependent Claim
31 words
The laminated sail fabric of claim 1 wherein said warp strands are composed of a material selected from the group consisting of aramids, highly oriented polyethylene, liquid crystal polymers and carbon.
Claim 8
Dependent Claim
117 words
A sail comprising a plurality of panels joined together, said sail when placed in use having lines of maximum stress therein extending in particular directions, at least some of the panels of said sail comprising a laminate comprising a first layer comprising a plurality of spaced warp strands, and a second film layer adhesively bonded to said first layer, said second film layer comprising a liquid crystal polymer having maximum strength in a given axial direction, and the axial direction of said film being disposed at an angle to said warp yarns, at least some of said panels being arranged in the sail with the warp yarns are generally in parallel with said lines of maximum stress.
Claim 9
Dependent Claim
117 words
A sail comprising a plurality of panels joined together, said sail when placed in use having lines of maximum stress therein extending in particular directions, at least some of the panels of said sail comprising a laminate comprising a first layer comprising a plurality of spaced warp strands, and a second film layer adhesively bonded to said first layer, said second film layer comprising a liquid crystal polymer having maximum strength in a given axial direction, and the axial direction of said film being disposed at an angle to said warp yarns, at least some of said panels being arranged in the sail with the warp yarns are generally in parallel with said lines of maximum stress.
Claim 10
Dependent Claim
25 words
The sail of claim 7 wherein said warp strands are composed of oriented fibers composed of materials comprising aramids, polyethylene, liquid crystal polymers and carbon.
Claim 11
Dependent Claim
15 words
The sail of claim 7 wherein said liquid crystal polymer film is a polyester-polyarylate polymer.
References Cited (Backward Citations)
US4444822A
Cited
US4590121A
Cited
US5061553A
Cited
US4945848A
Cited
US5097783A
Cited
US5074234A
Cited
US5097784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |