US3317044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water conditioning apparatus
Assignee: Culligan Inc
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Filing: 1964-12-02
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Granted: 1967-05-02
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Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Lawrence P Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN A WATER CONDITIONING APPARATUS, A TANK HAVING A GENERALLY PARABOLIC SHAPED LOWER END, A BED OF ION EXCHANGE RESIN DISPOSED WITHIN THE TANK, A TUBE DISPOSED CENTRALLY OF THE TANK AND EXTENDING THROUGH THE BED OF RESIN, AND A DISTRIBUTOR CONNECTED TO THE LOWER END OF THE TUBE AND DISPOSED AT THE PARABOLIC END OF THE TANK, SAID DISTRIBUTOR COMPRISING AN INNER INVERTED GENERALLY FRUSTO CONICAL WALL AND AN OUTER INVERTED GENERALLY FRUSTO CONICAL WALL WITH SAID WALLS BEING SPACED APART TO PROVIDE A PASSAGE THEREBETWEEN, SAID PASSAGE COMMUNICATING WITH THE LOWER END OF SAID TUBE, SAID INNER WALL AND SAID OUTER WALLS BOTH BEING PROVIDED WITH A PLURALITY OF OPENINGS ESTABLISHING COMMUNICATION BETWEEN SAID PASSAGE AND THE INTERIOR OF THE TANK.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |