US3209917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter cartridge
Assignee: Walker Manufacturing Co
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Filing: 1964-12-21
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Granted: 1965-10-05
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gustav H Yelinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:16
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/005; B01D27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN AXIAL FLOW FILTER CARTRIDGE FOR INSERTION INTO A SUBSTANTIALLY CYLINDRICAL FILTER HOUSING COMPRISING A CYLINDRICAL CENTER TUBE, A PAIR OF END CAPS DISPOSED ONE AT EACH END OF SAID CENTER TUBE, ONE OF SAID END CAPS BEING FORMED WITH A PLURALITY OF INLET PORTS, THE OTHER OF SAID END CAPS BEING FORMED WITH A PLURALITY OF OUTLET PORTS, A FLEXIBLE SOCK ELEMENT EXTENDING BETWEEN SAID END CAPS AND HAVING END SECTIONS OVERLYING SAID INLET AND SAID OUTLET PORTS, AND A FILTERING MEDIA CONTAINED BETWEEN SAID SOCK ELEMENT, SAID END CAPS AND SAID CENTER TUBE, AT LEAST A PORTION OF SAID FILTERING MEDIA BEING DISPOSED BETWEEN SAID SOCK ELEMENT AND THE OUTER PERIPHERIES OF SAID END CAPS FOR PREVENTING SAID SOCK ELEMENT FROM BEARING DIRECTLY UPON SAID OUTER PERIPHERIES OF SAID END CAPS AND GIVING THE FILTER CARTRIDGE DIMENSIONAL FLEXIBILITY IN A RADIAL DIRECTION TO FACILITATE INSERTION THEREOF IN THE FILTER HOUSING.
Claim 2
Dependent Claim
152 words
AN AXIAL FLOW FILTER CARTRIDGE FOR INSERTION INTO A SUBSTANTIALLY CYLINDRICAL FILTER HOUSING COMPRISING A CYLINDRICAL CENTER TUBE, A PAIR OF END CAPS DISPOSED ONE AT EACH END OF SAID CENTER TUBE, ONE OF SAID END CAPS BEING FORMED WITH A PLURALITY OF INLET PORTS, THE OTHER OF SAID END CAPS BEING FORMED WITH A PLURALITY OF OUTLET PORTS, A FLEXIBLE SOCK ELEMENT EXTENDING BETWEEN SAID END CAPS AND HAVING END SECTIONS OVERLYING SAID INLET AND SAID OUTLET PORTS, AND A FILTERING MEDIA CONTAINED BETWEEN SAID SOCK ELEMENT, SAID END CAPS AND SAID CENTER TUBE, AT LEAST A PORTION OF SAID FILTERING MEDIA BEING DISPOSED BETWEEN SAID SOCK ELEMENT AND THE OUTER PERIPHERIES OF SAID END CAPS FOR PREVENTING SAID SOCK ELEMENT FROM BEARING DIRECTLY UPON SAID OUTER PERIPHERIES OF SAID END CAPS AND GIVING THE FILTER CARTRIDGE DIMENSIONAL FLEXIBILITY IN A RADIAL DIRECTION TO FACILITATE INSERTION THEREOF IN THE FILTER HOUSING.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |