US3095290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End sealing means for filter cartridges
Assignee: Fram Corp
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Filing: 1960-10-26
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Granted: 1963-06-25
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Expires: 1980-10-26
Abstract
No abstract record available.
Inventors
- 👤 Carl G Hockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:03
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A FILTER CATRIDGE CONSTRUCTED TO COMPENSATE FOR DISTORTIONS IN AND MANUFACTURING VARIATIONS IN THE TOP FILTER ENGAGING WALL OR BOTTOM FILTER ENGAGING WALL OF A HOUSING FOR SUCH CATRIDGE, COMPRISING A TUBULAR PLEATED FILTER MEDIUM HAVING A CLOSURE CAP SECURED TO EACH END THEREOF, AT LEAST ONE OF SAID CAPS BEING FORMED OF A RESILIENT RUBBER-LIKE PLASTIC MOLDED TO SHAPE AND HAVING A SINGLE ANNULAR FLANGE THAT PROJECTS LATERALLY WELL BEYOND THE CIRCLE DEFINED BY THE FOLDS OF THE PLEATS, AND HAVING AN INTEGRAL ANNULAR GASKET PROJECTING FROM THE OUTER FACE OF SUCH FLANGE AND POSITIONED SO THAT THE ENTIRE GASKET LIES SOME DISTANCE FROM SAID CIRCLE TO ENGAGE A WALL OF SUCH HOUSING, SO THAT WHEN PRESSURE IS APPLIED THE PROJECTING FLANGE CAN FLEX AND BEND TO PERMIT IS APPLIED THE PROJECTING FLANGE MOVE BODILY AND BEND TO SECURE A SEAL AGAINST SAID WALL UNDER A MINIMUM END PRESSURE UPON THE CATRIDGE.
Claim 2
Dependent Claim
153 words
A FILTER CATRIDGE CONSTRUCTED TO COMPENSATE FOR DISTORTIONS IN AND MANUFACTURING VARIATIONS IN THE TOP FILTER ENGAGING WALL OR BOTTOM FILTER ENGAGING WALL OF A HOUSING FOR SUCH CATRIDGE, COMPRISING A TUBULAR PLEATED FILTER MEDIUM HAVING A CLOSURE CAP SECURED TO EACH END THEREOF, AT LEAST ONE OF SAID CAPS BEING FORMED OF A RESILIENT RUBBER-LIKE PLASTIC MOLDED TO SHAPE AND HAVING A SINGLE ANNULAR FLANGE THAT PROJECTS LATERALLY WELL BEYOND THE CIRCLE DEFINED BY THE FOLDS OF THE PLEATS, AND HAVING AN INTEGRAL ANNULAR GASKET PROJECTING FROM THE OUTER FACE OF SUCH FLANGE AND POSITIONED SO THAT THE ENTIRE GASKET LIES SOME DISTANCE FROM SAID CIRCLE TO ENGAGE A WALL OF SUCH HOUSING, SO THAT WHEN PRESSURE IS APPLIED THE PROJECTING FLANGE CAN FLEX AND BEND TO PERMIT IS APPLIED THE PROJECTING FLANGE MOVE BODILY AND BEND TO SECURE A SEAL AGAINST SAID WALL UNDER A MINIMUM END PRESSURE UPON THE CATRIDGE.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |