US3304664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension-restrained air supported structure
Assignee: Individual
•
Filing: 1965-05-19
•
Granted: 1967-02-21
•
Expires: 1985-05-19
Abstract
No abstract record available.
Inventors
- 👤 William L Duquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:27
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN AIR SUPPORTED STRUCTURE FOR USE UPON A BASE AREA COMPRISING A PLURALITY OF SUBSTANTIALLY CONCENTRIC UPSTANDING WALLS UPON THE BASE AREA, THE INNER WALL DEFINING AN INNER VOLUME, A FIRST TOP WALL COVERING THE VOLUME DEFINED BY THE UPSTANDING WALLS, A SECOND TOP WALL EXTENDING OUTWARDLY AND SUBSTANTIALLY HORIZONTALLY BEYOND THE UPSTANDING WALLS, MEANS FOR CIRCULATING AIR IN THE INNER VOLUME AND IN THE SPACE BETWEEN THE UPSTANDING WALLS, MEANS FOR DISCHARGING THE CIRCULATED AIR TO ATMOSPHERE INCLUDING A ONE-WAY VALVE COMMUNICATING THROUGH THE FIRST AND SECOND TOP WALLS TO ATMOSPHERE, A STRUCTURAL RING DEFINING THE PERIPHERY OF THE SECOND TOP WALL, AND AT LEAST ONE TENSION MEMBER EXTENDING BETWEEN THE STRUCTURAL RING AND THE BASE AREA.
Claim 2
Dependent Claim
118 words
AN AIR SUPPORTED STRUCTURE FOR USE UPON A BASE AREA COMPRISING A PLURALITY OF SUBSTANTIALLY CONCENTRIC UPSTANDING WALLS UPON THE BASE AREA, THE INNER WALL DEFINING AN INNER VOLUME, A FIRST TOP WALL COVERING THE VOLUME DEFINED BY THE UPSTANDING WALLS, A SECOND TOP WALL EXTENDING OUTWARDLY AND SUBSTANTIALLY HORIZONTALLY BEYOND THE UPSTANDING WALLS, MEANS FOR CIRCULATING AIR IN THE INNER VOLUME AND IN THE SPACE BETWEEN THE UPSTANDING WALLS, MEANS FOR DISCHARGING THE CIRCULATED AIR TO ATMOSPHERE INCLUDING A ONE-WAY VALVE COMMUNICATING THROUGH THE FIRST AND SECOND TOP WALLS TO ATMOSPHERE, A STRUCTURAL RING DEFINING THE PERIPHERY OF THE SECOND TOP WALL, AND AT LEAST ONE TENSION MEMBER EXTENDING BETWEEN THE STRUCTURAL RING AND THE BASE AREA.
References Cited (Backward Citations)
US3123085A
Cited
US2297150A
Cited
US2355248A
Cited
US2411316A
Cited
US2649101A
Cited
US2910994A
Cited
US2872933A
Cited
FR1243346A
Cited
FR1309317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |