US3228045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buoyant safety devices
Assignee: Callery Chemical Co
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Filing: 1964-05-26
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Granted: 1966-01-11
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Expires: 1984-05-26
Abstract
No abstract record available.
Inventors
- 👤 James W Shepherd
- 👤 Raymond J Grantham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:37
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/11; B63C9/125; B63C9/1255; Y; Y10; Y10S; Y10S521/00; Y10S521/912
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
AN INFLATABLE BUOYANT SAFETY DEVICE HAVING A FLEXIBLE CHAMBER AND INFLATING MEANS ASSOCIATED WITH SAID CHAMBER, SAID INFLATING MEANS COMPRISING TWO SEPARATELY CONTAINED COMPONENTS FOR PRODUCING A PREDOMINANTLY CLOSED CELL SOLID FOAM UPON INTERMIXTURE, THE AMOUNT OF SAID COMPONENTS BEING IN EXCESS OF THAT REQUIRED TO FULLY INFLATE SAID CHAMBER, SAID CHAMBER BEING FORMED AT LEAST IN PART OF A POROUS FABRIC, AND MEANS FOR MIXING SAID COMPONENTS TO PRODUCE FOAM AND INFLATE SAID CHAMBER.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |