Patent US3224406A successfully refreshed from Google Patents.
US3224406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater towing cable lift attachment
Assignee: RTX Corp
•
Filing: 1964-05-14
•
Granted: 1965-12-21
•
Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 James W Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:46
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/56; B63B21/66; B63B21/663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN A UNDERWATER TOWING APPARATUS, A FLEXIBLE CABLE, A PLURALITY OF FLEXIBLE WINGS POSITIONED IN SYMMETRIC PAIRS AT SELECTED STATIONS ALONG SAID CABLE, AND MEANS TO SUPPORT SAID WINGS SO THAT WATER MOTION DURING CABLE TOWING WILL ACT UPON SAID WINGS TO HYDRODYNAMICALLY GENERATE LIFT FORCES ALONG SAID CABLE.
Claim 2
Dependent Claim
49 words
IN A UNDERWATER TOWING APPARATUS, A FLEXIBLE CABLE, A PLURALITY OF FLEXIBLE WINGS POSITIONED IN SYMMETRIC PAIRS AT SELECTED STATIONS ALONG SAID CABLE, AND MEANS TO SUPPORT SAID WINGS SO THAT WATER MOTION DURING CABLE TOWING WILL ACT UPON SAID WINGS TO HYDRODYNAMICALLY GENERATE LIFT FORCES ALONG SAID CABLE.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |