US3254457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equilibrium (air) door
Assignee: Individual
•
Filing: 1964-12-21
•
Granted: 1966-06-07
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Leigh M Gedney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN AIR-SUPPORTED STRUCTURE HAVING GROUND ENGAGING WALLS AND ROOF FORMED OF A LOW AIR PERMEABLE MATERIAL, AT LEAST ONE OF SAID WALLS PROVIDED WITH INGRESS AND EGRESS MEANS COMPRISING AN APERTURE EXTENDING FROM THE GROUND ENGAGING LOWER END OF SAID ONE WALL, SAID APERTURE HAVING VERTICAL AND HORIZONTAL DIMENSIONS SUFFICIENT TO PROVIDE FOR PEDESTRAIN AND VEHICULAR TRAFFIC, THE PERIPHERY OF SAID APERTURE PROVIDED WITH SUPPORT MEANS, AND MEANS FOR SUPPLYING A CURRENT TO AIR INWARDLY TO SAID STRUCTURE TO INFLATE SAID STRUCTURE THROUGH SAID INGRESS AND ENGRESS MEANS AND TO MAINTAIN SUCH STRUCTURES IN AN ERECT POSITION.
Claim 2
Dependent Claim
97 words
AN AIR-SUPPORTED STRUCTURE HAVING GROUND ENGAGING WALLS AND ROOF FORMED OF A LOW AIR PERMEABLE MATERIAL, AT LEAST ONE OF SAID WALLS PROVIDED WITH INGRESS AND EGRESS MEANS COMPRISING AN APERTURE EXTENDING FROM THE GROUND ENGAGING LOWER END OF SAID ONE WALL, SAID APERTURE HAVING VERTICAL AND HORIZONTAL DIMENSIONS SUFFICIENT TO PROVIDE FOR PEDESTRAIN AND VEHICULAR TRAFFIC, THE PERIPHERY OF SAID APERTURE PROVIDED WITH SUPPORT MEANS, AND MEANS FOR SUPPLYING A CURRENT TO AIR INWARDLY TO SAID STRUCTURE TO INFLATE SAID STRUCTURE THROUGH SAID INGRESS AND ENGRESS MEANS AND TO MAINTAIN SUCH STRUCTURES IN AN ERECT POSITION.
References Cited (Backward Citations)
US3123085A
Cited
FR655445A
Cited
US2782794A
Cited
US2910994A
Cited
US3024796A
Cited
FR1235093A
Cited
US3109440A
Cited
GB912155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |