US3393696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifying apparatus
Assignee: Carrier Corp
•
Filing: 1965-10-18
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Granted: 1968-07-23
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Charles A Johnson
- 👤 Peter J Lunde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/22; G; G05; G05D; G05D11/00; G05D11/02; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/479
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A FLOW LEVELING WEIR FOR CONVERTING SMALL UNEVEN FLOWS OF LIQUID TO SUBSTANTIALLY EVEN FLOWS COMPRISING A TANK FOR RECEIVING AN UNEVEN FLOW OF SAID LIQUID, SAID TANK INCLUDING WALL MEANS, AND A BOTTOM, SLOT MEANS IN SAID WALL MEANS EXTENDING IN A SUBSTANTIALLY VERTICAL DIRECTION, SAID SLOT MEANS BEING OF A WIDTH WHICH WILL PERMIT THE LIQUID IN SAID TANK TO CLIMB IN SAID SLOT MEANS BY CAPILLARY ACTION, AND A WEIR BARRIER IN SAID SLOT MEANS, SAID WEIR BARRIER HAVING AN UPPER PORTION LYING ABOVE SAID BOTTOM OF SAID TANK.
References Cited (Backward Citations)
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US1635414A
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US2311862A
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US2438327A
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US3249116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |