US3269097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airline filter
Assignee: Aro Corp
•
Filing: 1964-01-27
•
Granted: 1966-08-30
•
Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Dale F German
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:39
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
IN AN AIRLINE FILTER, A HEAD A FRUSTO-CONICAL BODY DEPENDING FROM SAID HEAD, A WATER COLLECTING BOWL DEPENDING FROM THE LOWER END OF SAID FRUSTO-CONICAL BODY, SAID HEAD HAVING AN INLET AND AN OUTLET IN THE UPPER END OF SAID BODY, SAID OUTLET HAVING AN AIR RECEIVING END WHICH IS SUBSTANTIALLY CENTRALLY LOCATED IN THE UPPER END OF SAID BODY, A TUBULAR FILTER ELEMENT DEPENDING FROM SAID AIR RECEIVING END OF SAID OUTLET, A SUPPORT THEREFOR, SPRING MEANS URGING SAID SUPPORT UPWARDLY AGAINST SAID FILTER ELEMENT AND SAID FILTER ELEMENT UPWARDLY AGAINST SAID AIR RECEIVING END OF SAID OUTLET, A TUBULAR BAFFLE SURROUNDING SAID FILTER ELEMENT, SAID FILTER ELEMENT AND SAID TUBULAR BAFFLE HAVING DIAMETERS THROUGHOUT THEIR HEIGHT WHICH HAVE A DOWNWARDLY DIVERGING RELATIONSHIP TO EACH OTHER TO EQUALLY DISTRIBUTE AIR FROM THE LOWER END OF SAID BODY OVER THE SURFACE OF SAID FILTER ELEMENT, BAFFLE PLATES ACROSS THE UPPER AND LOWER ENDS OF SAID FRUSTO-CONICAL BODY, ONE OF SAID BAFFLE PLATES HAVING SWIRL BLADES WHICH ARE INCLINED TO SWRIL THE AIR IN ONE DIRECTION AND THE OTHER OF SAID BAFFLE PLATES HAVING SWIRL BLADES WHICH ARE INCLINED TO SWIRL THE AIR IN THE OPPOSITE DIRECTION, THE LOWER ONE
Claim 2
Dependent Claim
199 words
IN AN AIRLINE FILTER, A HEAD A FRUSTO-CONICAL BODY DEPENDING FROM SAID HEAD, A WATER COLLECTING BOWL DEPENDING FROM THE LOWER END OF SAID FRUSTO-CONICAL BODY, SAID HEAD HAVING AN INLET AND AN OUTLET IN THE UPPER END OF SAID BODY, SAID OUTLET HAVING AN AIR RECEIVING END WHICH IS SUBSTANTIALLY CENTRALLY LOCATED IN THE UPPER END OF SAID BODY, A TUBULAR FILTER ELEMENT DEPENDING FROM SAID AIR RECEIVING END OF SAID OUTLET, A SUPPORT THEREFOR, SPRING MEANS URGING SAID SUPPORT UPWARDLY AGAINST SAID FILTER ELEMENT AND SAID FILTER ELEMENT UPWARDLY AGAINST SAID AIR RECEIVING END OF SAID OUTLET, A TUBULAR BAFFLE SURROUNDING SAID FILTER ELEMENT, SAID FILTER ELEMENT AND SAID TUBULAR BAFFLE HAVING DIAMETERS THROUGHOUT THEIR HEIGHT WHICH HAVE A DOWNWARDLY DIVERGING RELATIONSHIP TO EACH OTHER TO EQUALLY DISTRIBUTE AIR FROM THE LOWER END OF SAID BODY OVER THE SURFACE OF SAID FILTER ELEMENT, BAFFLE PLATES ACROSS THE UPPER AND LOWER ENDS OF SAID FRUSTO-CONICAL BODY, ONE OF SAID BAFFLE PLATES HAVING SWIRL BLADES WHICH ARE INCLINED TO SWRIL THE AIR IN ONE DIRECTION AND THE OTHER OF SAID BAFFLE PLATES HAVING SWIRL BLADES WHICH ARE INCLINED TO SWIRL THE AIR IN THE OPPOSITE DIRECTION, THE LOWER ONE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |