Patent US3250394A successfully refreshed from Google Patents.
US3250394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation apparatus
Assignee: Gulf Canada Ltd
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Filing: 1963-05-03
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Granted: 1966-05-10
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Clark Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:41
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/24; B03D1/26; B03D1/1412; B03D1/1443; B03D1/1456; B03D1/1481; B03D1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FLOTATION APPARATUS COMPRISING AN UPSTANDING TANK, A FUNNEL INCLUDING DOWNWARDLY SLOPING SIDES AND A THROAT HAVING AN OPENING AT ITS BOTTOM WITHIN SAID TANK, UPWARDLY SLANTED BAFFLE MEANS IN SAID TANK, SAID BAFFLE MEANS FORMING A LATERAL COMPARTMENT BETWEEN SAID DOWNWARDLY SLOPING SIDES OF THE FUNNEL AND THE TANK, SAID BAFFLE MEANS AT ITS LOWER END BEING AFFIXED TO THE INNER WALL OF THE TANK AND AT ITS UPPER END EXTENDING ABOVE THE THROAT OPENING OF SAID FUNNEL, SAID UPPER END OF THE BAFFLE MEANS BEING SPACED APART FROM THE SIDES OF SAID FUNNEL THEREBY PROVIDING A COMMUNICATING OPENING BETWEEN THE BOTTOM OF SAID TANK AND SAID LATERAL COMPARTMENT, MEANS FOR ADMITTING LIQUIDS INTO THE FUNNEL ABOVE THE THROAT, MEANS FOR ADMITTING AIR IN SAID THROAT, MEANS FOR REMOVING SOLIDS FROM THE BOTTOM OF THE TANK, MEANS IN SAID LATERAL COMPARTMENT BELOW SAID COMMUNICATING OPENING FOR REMOVING SOLIDS, MEANS IN SAID LATERAL COMPARTMENT FOR REMOVING WATER THEREFROM, SAID WATER REMOVING MEANS BEING LOCATED ABOVE SAID MEANS FOR REMOVING SOLIDS FROM THE LATERAL COMPARTMENT, IMPINGEMENT BAFFLES WITHIN SAID LATERAL COMPARTMENT SPACED BETWEEN SAID COMMUNICATING OPENING AND SAID WATER REMOVING MEANS.
Claim 2
Dependent Claim
190 words
A FLOTATION APPARATUS COMPRISING AN UPSTANDING TANK, A FUNNEL INCLUDING DOWNWARDLY SLOPING SIDES AND A THROAT HAVING AN OPENING AT ITS BOTTOM WITHIN SAID TANK, UPWARDLY SLANTED BAFFLE MEANS IN SAID TANK, SAID BAFFLE MEANS FORMING A LATERAL COMPARTMENT BETWEEN SAID DOWNWARDLY SLOPING SIDES OF THE FUNNEL AND THE TANK, SAID BAFFLE MEANS AT ITS LOWER END BEING AFFIXED TO THE INNER WALL OF THE TANK AND AT ITS UPPER END EXTENDING ABOVE THE THROAT OPENING OF SAID FUNNEL, SAID UPPER END OF THE BAFFLE MEANS BEING SPACED APART FROM THE SIDES OF SAID FUNNEL THEREBY PROVIDING A COMMUNICATING OPENING BETWEEN THE BOTTOM OF SAID TANK AND SAID LATERAL COMPARTMENT, MEANS FOR ADMITTING LIQUIDS INTO THE FUNNEL ABOVE THE THROAT, MEANS FOR ADMITTING AIR IN SAID THROAT, MEANS FOR REMOVING SOLIDS FROM THE BOTTOM OF THE TANK, MEANS IN SAID LATERAL COMPARTMENT BELOW SAID COMMUNICATING OPENING FOR REMOVING SOLIDS, MEANS IN SAID LATERAL COMPARTMENT FOR REMOVING WATER THEREFROM, SAID WATER REMOVING MEANS BEING LOCATED ABOVE SAID MEANS FOR REMOVING SOLIDS FROM THE LATERAL COMPARTMENT, IMPINGEMENT BAFFLES WITHIN SAID LATERAL COMPARTMENT SPACED BETWEEN SAID COMMUNICATING OPENING AND SAID WATER REMOVING 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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |