US3260366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Union Tank Car Co
•
Filing: 1963-10-30
•
Granted: 1966-07-12
•
Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Duff
- 👤 Alfonse J Soriente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:51
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/46; B01D24/4631; B01D24/4636; B01D24/02; B01D24/10; B01D24/14; B01D24/48; B01D24/4869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A FILTERING APPARATUS COMPRISING A TANK FORMING A FILTER CHAMBER HAVING A FILTER BED THEREIN, MEANS TO TRANSFER LIQUID TO BE TREATED INTO SAID FILTER CHAMBER, SAID LIQUID TRANSFER MEANS COMMUNICATING WITH SAID FILTER CHAMBER ABOVE SAID FILTER BED, MEANS FOR ENTRAINING GAS IN SAID LIQUID PRIOR TO SAID LIQUID ENTERING SAID FILTER CHAMBER, VENT MEANS COACTING AND COMMUNICATING WITH SAID FILTER CHAMBER ABOVE SAID FILTER BED AND BELOW WHERE SAID LIQUID TRANSFER MEANS COMMUNICATES WITH SAID FILTER CHAMBER TO DEFINE A GAS SPACE FORMED FROM RELEASED ENTRAINED GAS IN SAID LIQUID ABOVE SAID FILTER BED IN SAID FILTER CHAMBER, SAID VENT MEANS CONTROLLING THE SIZE OF SAID GAS SPACE, AND MEANS FOR PASSING A SCOURING GAS INTO SAID FILTER CHAMBER BELOW SAID FILTER BED.
Claim 2
Independent Claim
107 words
A METHOD OF FILTERING A LIQUID AND CLEANING THE FILTER WHICH COMPRISES ENTRAINING GAS IN SAID LIQUID, PASSING SAID LIQUID WITH SAID ENTRAINED GAS INTO AN ENCLOSED FILTER CHAMBER HAVING A FILTER BED THEREIN, RELEASING ENTRAINED GAS FROM SADI LIQUID TO FORM A GAS SPACE IN SAID FILTER CHAMBER ABOVE SAID FILTER BED, PASSING SAID LIQUID DOWNWARDLY THROUGH SAID FILTER BED IN SAID FILTER CHAMBER, WITHDRAWING TREATED LIQUID FROM SAID FILTER CHAMBER, TERMINATING THE FLOW OF SAID LIQUID WITH ENTRAINED GAS TO SAID FILTER CHAMBER, PASSING A SCOURING GAS UPWARDLY THROUGH SAID FILTER BED AND INTO SAID GAS SPACE, AND WITHDRAWING SCOURING GAS FROM SAID FILTER CHAMBER.
References Cited (Backward Citations)
US309222A
Cited
US317457A
Cited
US614594A
Cited
US625556A
Cited
US625508A
Cited
US630988A
Cited
US656043A
Cited
US1769475A
Cited
US2046770A
Cited
US2423172A
Cited
US2879891A
Cited
US3111486A
Cited
US3193099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |