US3279608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank having replaceable filter cartridges
Assignee: Union Tank Car Co
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Filing: 1963-05-21
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Granted: 1966-10-18
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Expires: 1983-05-21
Abstract
No abstract record available.
Inventors
- 👤 Alfonse J Soriente
- 👤 Joseph A Levendusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/88; B01D29/90; B01D29/902; B01D29/96; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0438; B01D2201/28; B01D2201/287
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A FILTER TANK HAVING FIRST AND SECOND END PORTIONS, SAID FILTER TANK HAVING A SMALL OPENING IN SAID FIRST END PORTION, PLATE MEANS MOUNTED IN SAID TANK IN SAID SECOND END PORTION, MEANS FOR HOLDING AN ANNULAR FILTER CARTRIDGE IN A FILTER TANK COMPRISING AN ANNULAR CARTRIDGE SEAT MEANS HAVING FIRST AND SECOND ENDS, SAID SEAT MEANS BEING SUPPORTED IN SAID TANK BY SAID PLATE MEANS WITH SAID SECOND END BEIG SPACED FROM SAID PLATE MEANS, SAID FILTER CARTRIDGE HAVING FIRST AND SECOND ENDS, SAID FIRST END OF SAID FILTER CARTRIDGE RESTING UPON SAID FIRST END OF SAID CARTRIDGE SEAT MEANS AND SAID SECOND END OF SAID FILTER CARTRIDGE EXTENDING TOWARD SAID FIRST END PORTION OF SAID TANK, AND A FASTENING MEANS EXTENDING THROUGH SAID FILTER CARTRIDGE AND HAVING A FIRST END WITH MEANS TO HOOK ONTO THE SECOND END OF SAID CARTRIDGE SEAT MEANS AND A SECOND END HAVING SPRING-BIASED MEANS FOR GRIPPING SAID SECOND END OF SAID FILTER CARTRIDGE
Claim 2
Dependent Claim
162 words
IN A FILTER TANK HAVING FIRST AND SECOND END PORTIONS, SAID FILTER TANK HAVING A SMALL OPENING IN SAID FIRST END PORTION, PLATE MEANS MOUNTED IN SAID TANK IN SAID SECOND END PORTION, MEANS FOR HOLDING AN ANNULAR FILTER CARTRIDGE IN A FILTER TANK COMPRISING AN ANNULAR CARTRIDGE SEAT MEANS HAVING FIRST AND SECOND ENDS, SAID SEAT MEANS BEING SUPPORTED IN SAID TANK BY SAID PLATE MEANS WITH SAID SECOND END BEIG SPACED FROM SAID PLATE MEANS, SAID FILTER CARTRIDGE HAVING FIRST AND SECOND ENDS, SAID FIRST END OF SAID FILTER CARTRIDGE RESTING UPON SAID FIRST END OF SAID CARTRIDGE SEAT MEANS AND SAID SECOND END OF SAID FILTER CARTRIDGE EXTENDING TOWARD SAID FIRST END PORTION OF SAID TANK, AND A FASTENING MEANS EXTENDING THROUGH SAID FILTER CARTRIDGE AND HAVING A FIRST END WITH MEANS TO HOOK ONTO THE SECOND END OF SAID CARTRIDGE SEAT MEANS AND A SECOND END HAVING SPRING-BIASED MEANS FOR GRIPPING SAID SECOND END OF SAID FILTER CARTRIDGE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |