Patent US4533589A successfully refreshed from Google Patents.
US4533589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite materials
Assignee: Qinetiq Ltd
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Filing: 1984-07-24
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Granted: 1985-08-06
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Expires: 2004-07-24
Abstract
Abstract A method is described for the production of composite materials from layers of wood veneer and fibres bonded together and impregnated with resin. The method includes the steps of (a) impregnating at least one layer of reinforcement fibres with a first resin, (b) coating surfaces of at least one layer of wood veneer with a second resin, (c) stacking the at least one resin impregnated reinforcement fibre layer with the at least one layer of resin coated wood veneer and (d) bonding the layers together under conditions of pressure and temperature appropriate to the resins employed in step (a) and step (b) to produce a laminate. Examples of composites are given using carbon fibres and hard wood veneers together with properties thereof.
Inventors
- 👤 John H. Sewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:14
CPC Classifications
B; B32; B32B; B32B21/00; B32B21/10; B32B21/04; B32B21/08; B32B21/14; B32B2255/00; B32B2255/08; B32B2255/26; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/026; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/08; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31786; Y10T428/3179; Y10T428/31971; Y10T428/31989; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3618
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A method of making a fibre reinforced composite material comprising the steps of (a) impregnating at least one layer of woven or unidirectional carbon or aramid reinforcement fibres with resin, (b) coating surfaces of at least one layer of wood veneer with resin, (c) stacking said at least one layer of resin impregnated reinforcement fibre with said at least one layer of resin coated wood veneer and (d) bonding said layers together under conditions of pressure and temperature appropriate to said resin employed in step (a) and step (b) to produce a composite material.
Claim 2
Independent Claim
94 words
A method of making a fibre reinforced composite material comprising the steps of (a) impregnating at least one layer of woven or unidirectional carbon or aramid reinforcement fibres with resin, (b) coating surfaces of at least one layer of wood veneer with resin, (c) stacking said at least one layer of resin impregnated reinforcement fibre with said at least one layer of resin coated wood veneer and (d) bonding said layers together under conditions of pressure and temperature appropriate to said resin employed in step (a) and step (b) to produce a composite material.
Claim 3
Dependent Claim
20 words
A method according to claim 1 wherein said resin is a thermosetting resin such as an epoxy or a polyester.
Claim 4
Dependent Claim
21 words
A method according to claim 1 wherein said bonding step (d) also includes molding the stacked layers into a non-planar shape.
Claim 5
Dependent Claim
40 words
A fibre reinforced composite material comprising at least one layer of woven or unidirectional carbon or aramid fibres impregnated with resin and bonded to at least one layer of wood veneer coated with and at least partially impregnated with resin.
Claim 6
Dependent Claim
40 words
A fibre reinforced composite material comprising at least one layer of woven or unidirectional carbon or aramid fibres impregnated with resin and bonded to at least one layer of wood veneer coated with and at least partially impregnated with resin.
Claim 7
Dependent Claim
19 words
A fibre reinforced composite material as claimed in claim 4 wherein said resin is an epoxy or polyester resin.
Claim 8
Dependent Claim
19 words
A fibre reinforced composite material according to claim 4 wherein said composite material is molded into a non-planar shape.
Claim 9
Dependent Claim
32 words
A fibre reinforced composite material as claimed in claim 4 including at least two of said impregnated fibre layers, and wherein opposed exterior faces of the composite material comprise impregnated fibre layers.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |