US3339735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter unit with pressure responsive valve means
Assignee: Bendix Corp
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Filing: 1966-12-22
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Granted: 1967-09-05
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Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Kasten Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/08; B01D17/10; B01D29/00; B01D29/11; B01D29/31; B01D29/33; B01D29/44; B01D29/48; B01D29/50; B01D29/52; B01D35/00; B01D35/14; B01D35/147; B01D36/00; B01D36/003; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A FILTER UNIT COMPRISING A HOUSING HAVING A PLURALITY OF INLET PORTS AND A SINGLE OUTLET PORT HTEREIN, A COMPRESSIBLE TUBULAR FILTERING ELEMENT LOCATED WITHIN SAID HOUSING FOR PERMITTING FLOW OF FLUID THERETHROUGH FROM THE OUTSIDE OF THE ELEMENT TO THE INSIDE OF THE ELEMENT, SAID TUBULAR ELEMENT HAVING ONE END THEREOF IN ABUTMENT WITH SAID HOUSING AND IN ALIGNMENT WITH SAID OUTLET PORT, MEANS FOR PLACING SAID TUBULAR ELEMENT UNDER A PREDETERMINED PRECOMPRESSION, A MOVABLE MEMBER OPERATIVELY CONNECTED TO SAID TUBULAR FILTERING ELEMENT, SAID MEMBER BEING MOVABLE WHEN THE DIFFERENTIAL PRESSURE ACROSS SAID TUBULAR FILTERING ELEMENT INCREASES ABOVE A PREDETERMINED VALUE, AND VALVE MEANS OPERATIVELY CONNECTED TO SAID MEMBER FOR CLOSING SAID OUTLET PORT AT DIFFERENTIAL PRESSURES ABOVE A PREDETERMINED VALUE AND AFTER CLOSURE AT ALL SUBSEQUENT DIFFERENTIAL PRESSURES BELOW SAID PREDETERMINED VALUE.
Claim 2
Dependent Claim
134 words
A FILTER UNIT COMPRISING A HOUSING HAVING A PLURALITY OF INLET PORTS AND A SINGLE OUTLET PORT HTEREIN, A COMPRESSIBLE TUBULAR FILTERING ELEMENT LOCATED WITHIN SAID HOUSING FOR PERMITTING FLOW OF FLUID THERETHROUGH FROM THE OUTSIDE OF THE ELEMENT TO THE INSIDE OF THE ELEMENT, SAID TUBULAR ELEMENT HAVING ONE END THEREOF IN ABUTMENT WITH SAID HOUSING AND IN ALIGNMENT WITH SAID OUTLET PORT, MEANS FOR PLACING SAID TUBULAR ELEMENT UNDER A PREDETERMINED PRECOMPRESSION, A MOVABLE MEMBER OPERATIVELY CONNECTED TO SAID TUBULAR FILTERING ELEMENT, SAID MEMBER BEING MOVABLE WHEN THE DIFFERENTIAL PRESSURE ACROSS SAID TUBULAR FILTERING ELEMENT INCREASES ABOVE A PREDETERMINED VALUE, AND VALVE MEANS OPERATIVELY CONNECTED TO SAID MEMBER FOR CLOSING SAID OUTLET PORT AT DIFFERENTIAL PRESSURES ABOVE A PREDETERMINED VALUE AND AFTER CLOSURE AT ALL SUBSEQUENT DIFFERENTIAL PRESSURES BELOW SAID PREDETERMINED VALUE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |