US3297280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft with inflatable landing gear
Assignee: Individual
•
Filing: 1965-09-22
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Granted: 1967-01-10
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Expires: 1985-09-22
Abstract
No abstract record available.
Inventors
- 👤 Lee Shao-Tang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:52
CPC Classifications
B; B60; B60V; B60V3/00; B60V3/08; B64; B64C; B64C35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN AN AIRCRAFT, AN ELONGATED FUSELAGE, AIR EXPANSIBLE PONTOON MEANS MOUNTED THEREON FOR ENABLING A LANDING OF THE AIRCRAFT ON WATER, MEANS FOR SELECTIVELY INTRODUCING AND EXTRACTING AIR FROM SAID PONTOON MEANS, AND MEANS FOR DISCHARGING THE AIR EXTRACTED FROM SAID PONTOON MEANS DOWNWARDLY RELATIVE TO SAID AIRCRAFT ALONG A SUBSTANTIAL PORTION OF THE LENGTH THEREOF SO AS TO EFFECTIVELY REDUCE SURFACE TENSION BETWEEN THE AIRCRAFT AND THE WATER ON WHICH IT FLOATS, SAID MEANS FOR DISCHARGING AIR DOWNWARDLY INCLUDING INTERNAL AIR CHAMBER MEANS WITHIN THE BELLY PORTION OF SAID FUSELAGE, A PLURALITY OF DOWNWARDLY DIRECTED AIR PORTS COMMUNICATING SAID AIR CHAMBER MEANS WITH THE EXTERIOR OF THE FUSELAGE, AND AIR LINE MEANS SELECTIVELY COMMUNICATING THE PONTOON MEANS WITH THE AIR CHAMBER MEANS.
Claim 2
Dependent Claim
123 words
IN AN AIRCRAFT, AN ELONGATED FUSELAGE, AIR EXPANSIBLE PONTOON MEANS MOUNTED THEREON FOR ENABLING A LANDING OF THE AIRCRAFT ON WATER, MEANS FOR SELECTIVELY INTRODUCING AND EXTRACTING AIR FROM SAID PONTOON MEANS, AND MEANS FOR DISCHARGING THE AIR EXTRACTED FROM SAID PONTOON MEANS DOWNWARDLY RELATIVE TO SAID AIRCRAFT ALONG A SUBSTANTIAL PORTION OF THE LENGTH THEREOF SO AS TO EFFECTIVELY REDUCE SURFACE TENSION BETWEEN THE AIRCRAFT AND THE WATER ON WHICH IT FLOATS, SAID MEANS FOR DISCHARGING AIR DOWNWARDLY INCLUDING INTERNAL AIR CHAMBER MEANS WITHIN THE BELLY PORTION OF SAID FUSELAGE, A PLURALITY OF DOWNWARDLY DIRECTED AIR PORTS COMMUNICATING SAID AIR CHAMBER MEANS WITH THE EXTERIOR OF THE FUSELAGE, AND AIR LINE MEANS SELECTIVELY COMMUNICATING THE PONTOON MEANS WITH THE AIR CHAMBER MEANS.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |