US3262567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter assemblies having pressureresponsive valves
Assignee: Pall Corp
•
Filing: 1964-08-20
•
Granted: 1966-07-26
•
Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 David B Pall
- 👤 Estates Roslyn
- 👤 Cordes Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:47
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A FILTER ASSEMBLY COMPRISING A HOUSING, INTERCOMMUNICATING INLET AND OUTLET PASSAGES THEREIN, A FILTER DISPOSED ACROSS THE LINE OF FLOW BETWEEN THE INLET AND OUTLET PASSAGES SO THAT THE FLOW THEREBETWEEN PASSES THROUGH THE FILTER, A RELIEF PASSAGE FOR FLUID FLOW BETWEEN THE INLET AND OUTLET PASSAGES IN PARALLEL TO THE FILTER, AND A FLUID-PRESSURE-RESPONSIVE RELIEF VALVE POSITIONED ACROSS THE RELIEF PASSAGE, AND COMPRISING A VALVE SEAT AND A SUBSTANTIALLY NON-DISTENSIBLE ANNULAR FRUSTOCONICAL SPRING DISK, A PORTION OF WHOSE SURFACE SEALS AGAINST THE VALVE SEAT AND IS BIASED THEREAGAINST TO CLOSE OFF THE RELIEF PASSAGE, ONE FACE OF THE DISK BEING EXPOSED TO INLET FLUID PRESSURE AND THE OTHER FACE OF THE DISK BEING EXPOSED TO FLUID PRESSURE IN THE RELIEF PASSAGE AND AN EDGE PORTION OF THE DISK ARRANGED TO MOVE AWAY FROM THE VALVE SEAT AT A PREDETERMINED FLUID PRESSURE DIFFERENTIAL ACROSS THE
Claim 2
Dependent Claim
145 words
A FILTER ASSEMBLY COMPRISING A HOUSING, INTERCOMMUNICATING INLET AND OUTLET PASSAGES THEREIN, A FILTER DISPOSED ACROSS THE LINE OF FLOW BETWEEN THE INLET AND OUTLET PASSAGES SO THAT THE FLOW THEREBETWEEN PASSES THROUGH THE FILTER, A RELIEF PASSAGE FOR FLUID FLOW BETWEEN THE INLET AND OUTLET PASSAGES IN PARALLEL TO THE FILTER, AND A FLUID-PRESSURE-RESPONSIVE RELIEF VALVE POSITIONED ACROSS THE RELIEF PASSAGE, AND COMPRISING A VALVE SEAT AND A SUBSTANTIALLY NON-DISTENSIBLE ANNULAR FRUSTOCONICAL SPRING DISK, A PORTION OF WHOSE SURFACE SEALS AGAINST THE VALVE SEAT AND IS BIASED THEREAGAINST TO CLOSE OFF THE RELIEF PASSAGE, ONE FACE OF THE DISK BEING EXPOSED TO INLET FLUID PRESSURE AND THE OTHER FACE OF THE DISK BEING EXPOSED TO FLUID PRESSURE IN THE RELIEF PASSAGE AND AN EDGE PORTION OF THE DISK ARRANGED TO MOVE AWAY FROM THE VALVE SEAT AT A PREDETERMINED FLUID PRESSURE DIFFERENTIAL ACROSS THE
References Cited (Backward Citations)
US2311320A
Cited
US2521891A
Cited
US2439936A
Cited
US2615675A
Cited
US2731154A
Cited
US3146194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |