US3278034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter tank and valve assembly
Assignee: Cascade Industries Inc
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Filing: 1964-04-13
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Granted: 1966-10-11
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Robert E West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:50
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/46; B01D24/4631; B01D24/4642; B01D24/02; B01D24/10; B01D24/12; B01D24/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
156 words
A FILTER TANK AND VALVE ASSEMBLY COMPRISING A FILTER TANK, A FILTER BED CONTAINED WITHIN SAID TANK, A SLIDE VALVE CYLINDER EXTENDING COMPLETELY THROUGH SAID TANK CONCENTRIC WITH SAID TANK AND SECURED IN PLACE BY PERMANENT LEAKPROOF CONNECTIONS, AN INLET PIPE COMMUNICATION WITH THE INTERIOR OF SAID CYLINDER PROJECTING TO A POINT EXTERNAL OF SAID TANK AND HAVING A PERMANENT LEAKPROOF CONNECTION WITH SAID TANK, A FIRST OUTLET PORT FORMED IN SAID CYLINDER WITHIN SAID TANK AND COMMUNICATING WITH THE INTERIOR OF SAID CYLINDER AND THE INTERIOR OF SAID TANK ABOVE SAID FILTER BED, A SECOND OUTLET PORT FORMED IN SAID CYLINDER WITHIN SAID TANK AND COMMUNICATING WITH THE INTERIOR OF SAID CYLINDER AND THE INTERIOR OF SAID TANK BELOW SAID FILTER BED, A PAIR OF OUTLET PORTS FORMED IN SAID CYLINDER EXTERNAL OF SAID TANK, AND PISTON TYPE VALVE MEANS MOVABLE WITHIN SAID CYLINDER TO CONTROL THE DIRECTION OF FLOW OF WATER THROUGH SAID ASSEMBLY.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |