Patent US3324816A successfully refreshed from Google Patents.
US3324816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety float for marine craft
Assignee: Individual
•
Filing: 1965-01-08
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Granted: 1967-06-13
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Expires: 1985-01-08
Abstract
No abstract record available.
Inventors
- 👤 Roger G Vogelsang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:33
CPC Classifications
B; B63; B63B; B63B43/00; B63B43/02; B63B43/10; B63B43/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A SAFETY FLOAT APPARATUS FOR BOATS COMPRISING AN INFLATABLE CHAMBER NORMALLY COLLAPSED IN A DEFLECTED CONDITION WITHIN A HULL, A CONTAINER HOLDING A PYROTECHNIC CHARGE OF SUFFICIENT GAS-GENERATING CAPACITY TO PRODUCE A QUANTITY OF GAS ADEQUATE UNAIDEDLY TO FULLY INFLATE SAID CHAMBER AND CONSTITUTING THE SOLE GAS-SUPPLYING SOURCE FOR INFLATING SAID CHAMBER, A GAS-COOLING HEAT EXCHANGER INCLUDING AN ELONGATED CIRCUITOUS CONDUIT OF HIGH HEAT CONDUCTING MATERIAL DISPOSED AND CONNECTED BETWEEN SAID CONTAINER AND SAID CHAMBER AND EFFECTIVE TO COOL THE HOT GAS EMITTED BY THE COMBUSTION OF SAID PYROTECHNIC CHARGE SUFFICIENTLY TO PREVENT HEAT DAMAGE TO SAID CHAMBER, AND MEANS FOR IGNITING SAID PYROTECHNIC CHARGE.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |