US4337106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making air cushion vehicle flexible skirts
Assignee: British Hovercraft Corp Ltd
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Filing: 1980-07-24
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Granted: 1982-06-29
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Expires: 2000-07-24
Abstract
Abstract An apertured flexible sheet component for an air cushion vehicle flexible skirt, such as an apertured section of a flexible skirt bag member, comprises reinforced flexible sheet material including a reinforcing fabric having substantial spacings between groups of cords from which the fabric is formed. The reinforcing fabric is coated with elastomeric material and apertures are formed in the elastomeric material within the spacings between the groups of cords in the reinforcing fabric so that no broken cords are caused by formation of the apertures.
Inventors
- 👤 Raymond L. Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
B; B60; B60V; B60V1/00; B60V1/16; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/54; B29C70/545; B29D; B29D28/00; B29D28/005; B29C2793/00; B29C2793/0045; B29C70/68; B29C70/685; B29C70/687; B29K; B29K2021/00; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
A method of manufacturing an apertured flexible sheet component for an air cushion vehicle flexible skirt, comprising locating a first sheet of elastomeric material having a plurality of shaped apertures therein on a face of a flat plate from which projects a plurality of peg members corresponding in shape and position to the apertures in the sheet and so that the peg members extend through said sheet apertures; locating on the sheet of elastomeric material a layer of reinforcing fabric having substantial spacings between groups of warp and weft cords so that said peg members pass through the spacings between the warp and weft cords in said reinforcing fabric; locating on said reinforcing fabric a second sheet of elastomeric material having a plurality of shaped apertures corresponding with those in said first sheet and so that said peg members pass through the apertures in the second sheet; locating an apertured pressure plate over the projecting ends of said peg members; subjecting the resulting assembly to pressure and heat to effect curing of the elastomeric material; and removing the pressure plate and the flat plate with the pegs whereby the removal at the pegs provides apertures of the desired size and shape in the flexible skirt without damaging the warp and weft cords of the reinforcing fabric.
Claim 2
Independent Claim
216 words
A method of manufacturing an apertured flexible sheet component for an air cushion vehicle flexible skirt, comprising locating a first sheet of elastomeric material having a plurality of shaped apertures therein on a face of a flat plate from which projects a plurality of peg members corresponding in shape and position to the apertures in the sheet and so that the peg members extend through said sheet apertures; locating on the sheet of elastomeric material a layer of reinforcing fabric having substantial spacings between groups of warp and weft cords so that said peg members pass through the spacings between the warp and weft cords in said reinforcing fabric; locating on said reinforcing fabric a second sheet of elastomeric material having a plurality of shaped apertures corresponding with those in said first sheet and so that said peg members pass through the apertures in the second sheet; locating an apertured pressure plate over the projecting ends of said peg members; subjecting the resulting assembly to pressure and heat to effect curing of the elastomeric material; and removing the pressure plate and the flat plate with the pegs whereby the removal at the pegs provides apertures of the desired size and shape in the flexible skirt without damaging the warp and weft cords of the reinforcing fabric.
Claim 3
Dependent Claim
22 words
A method of manufacturing an apertured flexible sheet component according to claim 1, wherein the reinforcing fabric is a mock leno fabric.
Claim 4
Dependent Claim
19 words
A method of manufacturing an apertured flexible sheet component according to claim 1, wherein the elastomeric material comprises rubber.
References Cited (Backward Citations)
US2213883A
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US2461240A
Cited
US3558412A
Cited
US3618695A
Cited
US3879250A
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US3901988A
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |