US3138507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber reinforced plastic articles and method of making the same
Assignee: Structural Fibers Inc
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Filing: 1961-06-15
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Granted: 1964-06-23
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Expires: 1981-06-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Wiltshire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:36
CPC Classifications
B; B29; B29D; B29D22/00; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10S; Y10S273/00; Y10S273/07; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/24; Y10T428/24752
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A METHOD OF PRODUCING FIBER-REINFORCED PLASTIC ARTICLES COMPRISING THE STEPS OF PROVIDING A PLURALITY OF POROUS, FIBROUS, MATTING SHEETS WHICH MAY BE FORMED IN SUBSTANTIALLY THE SHAPE OF THE ARTICLE TO BE PRODUCED; UNIFORMLY FEATHERING THE OPPOSITE EDGES OF EACH OF SAID MATTING SHEETS; SUPERIMPOSING SAID SHEETS ONE ON ANOTHER; POSITIONING THE SUPERIMPOSED SHEETS AGAINST A GENERALLY CONFORMING MOLD SURFACE WHILE OVERLAPPING A FEATHERED EDGE OF EACH SHEETWITH ITS ON, OPPOSITE, FEATHERED EDGE TO FORM A FIBER SHAPE HAVING A SUBSTANTIALLY UNIFORM BULK FACTOR AND WALL THICKNESS ACROSS THE OVERLAPPING FEATHERED EDGES; INVESTING SAID MATTING SHEETS WITH A SETTABLE RESIN; COMPACTING THE FORMED SHAPE; AND SETTING SAID RESIN TO THEREBY PRODUCE A SEAMLESS ARTICLE OF UNIFORMLY HIGH STRENGTH.
Claim 2
Independent Claim
118 words
A METHOD OF PRODUCING FIBER-REINFORCED PLASTIC ARTICLES COMPRISING THE STEPS OF PROVIDING A PLURALITY OF POROUS, FIBROUS, MATTING SHEETS WHICH MAY BE FORMED IN SUBSTANTIALLY THE SHAPE OF THE ARTICLE TO BE PRODUCED; UNIFORMLY FEATHERING THE OPPOSITE EDGES OF EACH OF SAID MATTING SHEETS; SUPERIMPOSING SAID SHEETS ONE ON ANOTHER; POSITIONING THE SUPERIMPOSED SHEETS AGAINST A GENERALLY CONFORMING MOLD SURFACE WHILE OVERLAPPING A FEATHERED EDGE OF EACH SHEETWITH ITS ON, OPPOSITE, FEATHERED EDGE TO FORM A FIBER SHAPE HAVING A SUBSTANTIALLY UNIFORM BULK FACTOR AND WALL THICKNESS ACROSS THE OVERLAPPING FEATHERED EDGES; INVESTING SAID MATTING SHEETS WITH A SETTABLE RESIN; COMPACTING THE FORMED SHAPE; AND SETTING SAID RESIN TO THEREBY PRODUCE A SEAMLESS ARTICLE OF UNIFORMLY HIGH STRENGTH.
Claim 3
Dependent Claim
114 words
A FIBROUS BODY ADAPTED TO BE IMPREGNATED WITH RESIN IN THE PRODUCTION FIBER-REINFORCED PLASTIC ARTICLES COMPRISING A CYLINDER, SAID CYLINDER COMPRISING A PLURALITY OF SUPERIMPOSED SHEETS OF POROUS, FIBROUS, MATTING MATERIAL, EACH SHEET HAVING FEATHERED END EDGES AND AT LEAST ONE FEATHERED SIDE EDGE, SAID SHEETS COMPRISING A CYLINDER IN WHICH ONE END EDGE OF EACH SHEET OVERLIES THE OPOSITE END EDGE OF ITS SHEET AND SO THAT SAID FEATHERED SIDE EDGE FORMS A FEATHERED RIM AT ONE END OF SAID CYLINDER, AND A FIBER PREFORM HAVING A FEATHERED PERIPHERAL EDGE, SAID END OF SAID CYLINDER BEING TELESCOPED WITHIN SAID PERFORM WITH SAID FEATHERED PERIPHERAL EDGE BEIG IN OVERLAPPING REGISTRY WITH SAID FEATHERED RIM.
Claim 4
Dependent Claim
114 words
A FIBROUS BODY ADAPTED TO BE IMPREGNATED WITH RESIN IN THE PRODUCTION FIBER-REINFORCED PLASTIC ARTICLES COMPRISING A CYLINDER, SAID CYLINDER COMPRISING A PLURALITY OF SUPERIMPOSED SHEETS OF POROUS, FIBROUS, MATTING MATERIAL, EACH SHEET HAVING FEATHERED END EDGES AND AT LEAST ONE FEATHERED SIDE EDGE, SAID SHEETS COMPRISING A CYLINDER IN WHICH ONE END EDGE OF EACH SHEET OVERLIES THE OPOSITE END EDGE OF ITS SHEET AND SO THAT SAID FEATHERED SIDE EDGE FORMS A FEATHERED RIM AT ONE END OF SAID CYLINDER, AND A FIBER PREFORM HAVING A FEATHERED PERIPHERAL EDGE, SAID END OF SAID CYLINDER BEING TELESCOPED WITHIN SAID PERFORM WITH SAID FEATHERED PERIPHERAL EDGE BEIG IN OVERLAPPING REGISTRY WITH SAID FEATHERED RIM.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |