US3138506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an article of stiffened fibrous material
Assignee: Goodyear Aerospace Corp
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Filing: 1959-12-08
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Granted: 1964-06-23
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Robert S Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:06
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0025; B29D99/0028; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/68; B29C70/86; B29C70/865; B29D24/00; B29D24/002; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/24; Y10T428/24149; Y10T428/24479; Y10T428/24562; Y10T428/24612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
THE METHOD OF MAKING A HOLLOW ARTICLE WHICH COMPRISES FORMING A CLOSED ARTICLE HAVING OPPOSED FLEXIBLE FABRIC WALLS AND WOVEN-IN TIE MEMBERS AT INTERVALS HOLDING THE WALLS IN DETERMINATE SPACED REALTION, IMPREGNATING THE ARTICLE WITH PLASTIC TO RENDER IT GAS-TIGHT, INFLATING THE ARTICLE AT A LOW PRESSURE TO TENSION THE TIE MEMBERS, ENCLOSING THE ARTICLE WITH A LAYER OF FIBERGLASS RESIN BONDED STIFFENING MATERIAL, THERMOSETTING THE STIFFENING MATERIAL, AND THEN INFLATING THE ARTICLE AT A HIGHER PRESSURE ADDITINALLY TENSION THE TIE MEMBERS AND STIFFENING MATERIAL.
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 |