US3145169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter cartridges
Assignee: J A BALDWIN MANFUACTURING Co
•
Filing: 1962-01-05
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Granted: 1964-08-18
•
Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jesse A Baldwin
- 👤 Robert A Schroeder
- 👤 Arnold L Ender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:55
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN OIL FILTER ELEMENT OF THE FLEXIBLE CONTAINER TYPE COMPRISING A PERFORATED METALLIC CENTER TUBE, A TUBULAR KNITTED CONTAINER MEMBER DISPOSED ABOUT THE CENTER TUBE AND HAVING END PORTIONS WHICH EXTEND A SUBSTANTIAL DISTANCE INWARDLY INTO THE OPPOSITE ENDS OF THE CENTER TUBE THEREBY FORMING THEREWITH A CLOSED-ENDED ANNULAR CONTAINER, A DENSELY COMPACTED MASS OF VEGETABLE FIBERS IN SAID CONTAINER, BAND-FORM PLUGS CONTAINED WITHIN THE CENTER TUBE AND SECURING THE END PORTIONS OF SAID KNITTED CONTAINER MEMBER THERETO AT LOCATIONS DISPOSED AXIALLY INWARD FROM THE ENDS OF SAID TUBE, AND COMBINED END SEAL AND RETAINER ASSEMBLIES DRIVE-FITTED INTO THE OUTER ENDS OF THE CENTER TUBE TO THE DEPTH OF SAID PLUGS THEREBY CLAMPING THE CONTAINER END PORTIONS TO THE ENDS OF THE CENTER TUBE, EACH SAID ASSEMBLY AND THE END OF THE CENTER
Claim 2
Dependent Claim
133 words
AN OIL FILTER ELEMENT OF THE FLEXIBLE CONTAINER TYPE COMPRISING A PERFORATED METALLIC CENTER TUBE, A TUBULAR KNITTED CONTAINER MEMBER DISPOSED ABOUT THE CENTER TUBE AND HAVING END PORTIONS WHICH EXTEND A SUBSTANTIAL DISTANCE INWARDLY INTO THE OPPOSITE ENDS OF THE CENTER TUBE THEREBY FORMING THEREWITH A CLOSED-ENDED ANNULAR CONTAINER, A DENSELY COMPACTED MASS OF VEGETABLE FIBERS IN SAID CONTAINER, BAND-FORM PLUGS CONTAINED WITHIN THE CENTER TUBE AND SECURING THE END PORTIONS OF SAID KNITTED CONTAINER MEMBER THERETO AT LOCATIONS DISPOSED AXIALLY INWARD FROM THE ENDS OF SAID TUBE, AND COMBINED END SEAL AND RETAINER ASSEMBLIES DRIVE-FITTED INTO THE OUTER ENDS OF THE CENTER TUBE TO THE DEPTH OF SAID PLUGS THEREBY CLAMPING THE CONTAINER END PORTIONS TO THE ENDS OF THE CENTER TUBE, EACH SAID ASSEMBLY AND THE END OF THE CENTER
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |