US4051288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing reinforced sheet material
Assignee: Individual
•
Filing: 1976-05-20
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Granted: 1977-09-27
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Expires: 1996-05-20
Abstract
Abstract A method of producing a reinforced sheet by feeding a layer of foam material to a stitching machine at a rate greater than that at which the stitched material is produced by the machine. The stitching in the product is thus disposed below the surface of the foam and hence is not destroyed during subsequent flame-bonding.
Inventors
- 👤 Alister Wilson
- 👤 William David Marr
- 👤 George Arthur Guild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:20
CPC Classifications
D; D05; D05B; D05B11/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/249921; Y10T428/249953; Y10T442/00; Y10T442/60; Y10T442/682
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
In a method of producing a reinforced sheet of a foam material comprising a layer of a foam material reinforced with a stitched system of substantially non-extensible yarn disposed generally parallel to the surface of the foam material which method includes feeding a layer of foam material through a stitching machine and thereby incorporating the reinforced stitching in the foam material, the improvement comprising feeding the foam material to the stitching machine at a rate greater than that at which the stitched system of reinforcing is produced by the machine.
Claim 2
Dependent Claim
90 words
In a method of producing a reinforced sheet of a foam material comprising a layer of a foam material reinforced with a stitched system of substantially non-extensible yarn disposed generally parallel to the surface of the foam material which method includes feeding a layer of foam material through a stitching machine and thereby incorporating the reinforced stitching in the foam material, the improvement comprising feeding the foam material to the stitching machine at a rate greater than that at which the stitched system of reinforcing is produced by the machine.
Claim 3
Dependent Claim
38 words
A method according to claim 1, wherein the rate at which the foam material is fed to the stitching machine is substantially 10% greater than that at which the stitched system of reinforcing is produced by the machine.
Claim 4
Dependent Claim
11 words
A reinforced sheet produced by a method according to claim 1.
Claim 5
Dependent Claim
17 words
A method according to claim 1, wherein the foam material is a sheet of polymeric elastomeric material.
Claim 6
Dependent Claim
12 words
A method according to claim 4, wherein the foam material is polyurethane.
Claim 7
Dependent Claim
21 words
A method according to claim 1, including applying to the surface of the reinforced foam layer a relatively thin polymeric film.
Claim 8
Dependent Claim
15 words
A method according to claim 6, wherein the thin polymeric film is applied by flame-bonding.
Claim 9
Dependent Claim
11 words
A reinforced sheet produced by a method according to claim 7.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |