US3304900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft float
Assignee: Individual
•
Filing: 1965-12-01
•
Granted: 1967-02-21
•
Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred P Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:33
CPC Classifications
B; B64; B64C; B64C35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
AN AIRCRAFT FLOAT STRUCTURE COMPRISING: A MAIN ELONGATE BODY PORTION HAVIN A FORWARD AND AN AFT END, SAID BODY HAVING AN UPPER SECTION AND A MATING LOWER SECTION COOPERATING TO FORM A HOLLOW INTERIOR, SAID LOWER SECTION HAVING A SUBSTANTIALLY FLAT BOTTOM WATER ENGAGING SURFACE; A PLURALITY OF BULKHEADS DISPOSED IN SPACED RELATION FROM THE FORWARD TO THE AFT END WITHIN THE HOLLOW INTERIOR OF SAID BODY PORTION, THEREBY FORMING A PLURALITY OF WATER TIGHT COMPARTMENTS; A PLURALITY OF AIR GUIDING CHANNELS FORMED IN THE BOTTOM SURFACE OF THE LOWER SECTION OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS EXTENDING IN PARALLEL SPACED RELATION WITH THE LONGITUDINAL AXIS OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS BEING GENERALLY INVERTED V-SHAPED IN CROSS-SECTION AND DECREASING IN CROSS-SECTIONAL AREA FROM THE FORWARD END TO THE AFT END OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS TERMINATING FORWARD OF THE AFT END OF THE FLAT BOTTOM SURFACE OF SAID BODY PORTION; AND MEANS FOR ATTACHING THE UPPER SECTION OF SAID BODY PORTION TO AN ASSOCIATED AIRCRAFT.
Claim 2
Dependent Claim
173 words
AN AIRCRAFT FLOAT STRUCTURE COMPRISING: A MAIN ELONGATE BODY PORTION HAVIN A FORWARD AND AN AFT END, SAID BODY HAVING AN UPPER SECTION AND A MATING LOWER SECTION COOPERATING TO FORM A HOLLOW INTERIOR, SAID LOWER SECTION HAVING A SUBSTANTIALLY FLAT BOTTOM WATER ENGAGING SURFACE; A PLURALITY OF BULKHEADS DISPOSED IN SPACED RELATION FROM THE FORWARD TO THE AFT END WITHIN THE HOLLOW INTERIOR OF SAID BODY PORTION, THEREBY FORMING A PLURALITY OF WATER TIGHT COMPARTMENTS; A PLURALITY OF AIR GUIDING CHANNELS FORMED IN THE BOTTOM SURFACE OF THE LOWER SECTION OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS EXTENDING IN PARALLEL SPACED RELATION WITH THE LONGITUDINAL AXIS OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS BEING GENERALLY INVERTED V-SHAPED IN CROSS-SECTION AND DECREASING IN CROSS-SECTIONAL AREA FROM THE FORWARD END TO THE AFT END OF SAID BODY PORTION, SAID AIR GUIDING CHANNELS TERMINATING FORWARD OF THE AFT END OF THE FLAT BOTTOM SURFACE OF SAID BODY PORTION; AND MEANS FOR ATTACHING THE UPPER SECTION OF SAID BODY PORTION TO AN ASSOCIATED AIRCRAFT.
References Cited (Backward Citations)
No citation records indexed.
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 |