US3079106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boundary layer control for gas filled balloons and airships
Assignee: General Mills Inc
•
Filing: 1961-04-17
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Granted: 1963-02-26
•
Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Whitnah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; B64B1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A BOUNDARY LAYER CONTROL FOR GAS FILLED AIRSHIPS AND BALLONS COMPRISING AN ELONGATE FLEXIBLE GAS IMPERVIOUS FUSIFORM ENVELOPE HAVING A CONSTRICTION THEREIN LOCATED REARWARD OF THE MAXIMUM DIAMETER THEREOF, A POROUS MATERIAL SECURED TO THE EDGES OF SAID CONSTRICTION AND THEREBY FORMING A CHANNEL BETWEEN THE PORTION OF
Claim 2
Dependent Claim
48 words
A BOUNDARY LAYER CONTROL FOR GAS FILLED AIRSHIPS AND BALLONS COMPRISING AN ELONGATE FLEXIBLE GAS IMPERVIOUS FUSIFORM ENVELOPE HAVING A CONSTRICTION THEREIN LOCATED REARWARD OF THE MAXIMUM DIAMETER THEREOF, A POROUS MATERIAL SECURED TO THE EDGES OF SAID CONSTRICTION AND THEREBY FORMING A CHANNEL BETWEEN THE PORTION OF
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |