US4601936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber mat reinforced plastic panels without the fiber readout defect
Assignee: Motors Liquidation Co
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Filing: 1985-04-01
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Granted: 1986-07-22
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Expires: 2005-04-01
Abstract
Abstract A method of making glass fiber mat reinforced RIM panels wherein glass fibers are kept away at a distance from the panel surface in a precisely controlled manner to avoid fiber readout defect. The method is carried out by molding glass fiber mats in a matched metal mold where at least one of the interior mold surface is etched with equally spaced, closely packed minute pockets or valleys of truncated pyramid shape. Fiber glass mat reinforced panels thus produced have a textured panel surface with a multiplicity of minute truncated pyramid like protuberances. Glass fibers are excluded from such protuberances to produce a panel surface without the fiber readout defect.
Inventors
- 👤 Hamid Ghavamikia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0053; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29C70/00; B29C70/04; B29C70/28; B29C70/54; B29C70/541; B29D; B29D24/00; B32B27/12; B32B3/00; B32B3/26; B32B3/30; B32B7/00; B32B7/04; B32B7/12; B29C67/00; B29C67/24; B29C67/246; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/10; B32B2305/20; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24479; Y10T428/24612; Y10T428/24628; Y10T428/24669; Y10T428/24678
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A reinforced plastic panel comprising a mat of glass fibers inpregnated with a plastic material, said panel having a textured surface formed concurrently with said panel and comprising a multiplicity of minute truncated pyramids of substantially equal height, each of said pyramids being substantially free of glass fibers and having a surface substantially parallel to the plane of said panel, whereby said surface of said pyramid defines the outermost surface of said reinforced panel which is free of the attendant undesirable appearance otherwise resulting from the presence of said fibers on said surface and is readily decorable in a subsequent process.
Claim 2
Dependent Claim
101 words
A reinforced plastic panel comprising a mat of glass fibers inpregnated with a plastic material, said panel having a textured surface formed concurrently with said panel and comprising a multiplicity of minute truncated pyramids of substantially equal height, each of said pyramids being substantially free of glass fibers and having a surface substantially parallel to the plane of said panel, whereby said surface of said pyramid defines the outermost surface of said reinforced panel which is free of the attendant undesirable appearance otherwise resulting from the presence of said fibers on said surface and is readily decorable in a subsequent process.
Claim 3
Dependent Claim
103 words
A predecorated plastic panel comprising a predecorated plastic sheet laminated by adhesive means to a substrate molded of glass fiber mat impregnated with plastic material, said substrate having a textured surface formed concurrently with said substrate and comprising a multiplicity of minute truncated pyramids of substantially equal height, each of said pyramids being substantially free of glass fibers and having a surface substantially parallel to the plane of said substrate whereby said surface of said pyramid defines the outermost surface of said substrate which is free of the attendant undesirable appearance otherwise resulting from the presence of said fibers on said substrate surface.
Claim 4
Dependent Claim
103 words
A predecorated plastic panel comprising a predecorated plastic sheet laminated by adhesive means to a substrate molded of glass fiber mat impregnated with plastic material, said substrate having a textured surface formed concurrently with said substrate and comprising a multiplicity of minute truncated pyramids of substantially equal height, each of said pyramids being substantially free of glass fibers and having a surface substantially parallel to the plane of said substrate whereby said surface of said pyramid defines the outermost surface of said substrate which is free of the attendant undesirable appearance otherwise resulting from the presence of said fibers on said substrate surface.
References Cited (Backward Citations)
US2893889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |