Patent US3369774A successfully refreshed from Google Patents.
US3369774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon envelope structure
Assignee: Individual
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Filing: 1961-08-02
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Granted: 1968-02-20
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur D Struble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:08
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1345; Y10T428/26; Y10T428/266; Y10T428/269; Y10T428/29; Y10T428/2913; Y10T428/298
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A BALLOON ENVELOPE STRUCTURE CHARACTERIZED BY THE FOLLOWING COMBINATION OF FEATURES; (A) A GAS ENVELOPE COMPRISING A SYNTHETIC PLASTIC FILM, (B) SAID PLASTIC FILM HAVING A THICKNESS WITHIN THE RANGE OF ABOUT 1/4 TO 1/16 MIL, (C) SAID PLASTIC FILM BEING NON-LOAD BEARING EXCEPT FOR THE GAS PRESSURE DIFFERENTIAL, (D) SAID PLASTIC FILM BEING DIVIDED INTO A PLURALITY OF SMALL MULTI-SIDED PANELS TO MEANS OF A PLURALITY OF THIN, ELONGATED STRENGTHENING GRID MEMBERS AFFIXED TO SAID PLASTIC FILM, (E) THE AMOUNT OF PLASTIC FILM WITHIN EACH PANAL BEING IN EXCESS OF THAT THE PLASTIC FILM CAN BILLOW ABOVE AND BEYOND ITS OWN EXTENSIBILITY UNDER THE INFLUENCE OF GAS PRESSURE AND ASSUME A COMPARATIVELY SMALL RADIUS FO CURVATURE, (F) SAID GRID MEMBERS FUNCTIONING AS THE LOAD BEARING MEMBERS FOR THE BALLOON ENVELOPE STRUCTURE.
Claim 2
Dependent Claim
132 words
A BALLOON ENVELOPE STRUCTURE CHARACTERIZED BY THE FOLLOWING COMBINATION OF FEATURES; (A) A GAS ENVELOPE COMPRISING A SYNTHETIC PLASTIC FILM, (B) SAID PLASTIC FILM HAVING A THICKNESS WITHIN THE RANGE OF ABOUT 1/4 TO 1/16 MIL, (C) SAID PLASTIC FILM BEING NON-LOAD BEARING EXCEPT FOR THE GAS PRESSURE DIFFERENTIAL, (D) SAID PLASTIC FILM BEING DIVIDED INTO A PLURALITY OF SMALL MULTI-SIDED PANELS TO MEANS OF A PLURALITY OF THIN, ELONGATED STRENGTHENING GRID MEMBERS AFFIXED TO SAID PLASTIC FILM, (E) THE AMOUNT OF PLASTIC FILM WITHIN EACH PANAL BEING IN EXCESS OF THAT THE PLASTIC FILM CAN BILLOW ABOVE AND BEYOND ITS OWN EXTENSIBILITY UNDER THE INFLUENCE OF GAS PRESSURE AND ASSUME A COMPARATIVELY SMALL RADIUS FO CURVATURE, (F) SAID GRID MEMBERS FUNCTIONING AS THE LOAD BEARING MEMBERS FOR THE BALLOON ENVELOPE STRUCTURE.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |