US3190058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical dust-separating device
Assignee: Farr Co
•
Filing: 1961-10-03
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Granted: 1965-06-22
•
Expires: 1981-10-03
Abstract
No abstract record available.
Inventors
- 👤 Richard S Farr
- 👤 Paul A Labadic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:25
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/022; F01; F01N; F01N5/00; F01N5/04; F02M35/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN AN AIR FILTERING DEVICE FOR USE WITH AN INTERNRAL COMBUSTION ENGINE OR THE LIKE HAVING INTAKE MEANS FOR DRAWING FILTERED AIR FROM THE DEVICE AND ALSO HAVING SUCTION MEANS FOR DRAWING FROM THE DEVICE SOME UNFILTERED AIR AND FOREIGN MATERIAL FILTERED OUT OF THE FLOWING AIR, THE COMBINATION OF: A GENERALLY CYLINDRICAL HOUSING HAVING A VERTICAL AXIS AND CYLINDRICAL WALL, SAID HOUDING HAVING AN UPPER END AND A LOWER END JOINED TO SAID WALL, THE SAID UPPER END HAVING AN AIR INLET OPENING SUBSTANTIALLY CONCENTRIC WITH SAID HOUSING, FIRST ANNULAR MEANS CONCENTRICALLY MOUNTED WITHIN SAID HOUSING FOR CHANGING THE DIRECTION OF AIR FLOW FROM DOWNWARDLY FROM SAID INLET TO RADIALLY OUTWARDLY AND UPWARDLY IN SAID HOUSING WHEREBY FOREIGN MATERIAL IS INERTIALLY DISCHARGED FROM THE FLOWING AIR, SAID FIRST MEANS INCLUDING A PLURALITY OF VERTICALLY SPACED ANNULAR VANE MEMBERS POSITIONED CONCENTRICALLY WITH SAID HOUSING, EACH VANE MEMBER HAVING A DOWNWARDLY AND INWARDLY EXTENDING FLANGE, THE SAID LOWER END OF THE HOUSING HAVING AN ANNULAR OUTLET POSITIONED
Claim 2
Dependent Claim
166 words
IN AN AIR FILTERING DEVICE FOR USE WITH AN INTERNRAL COMBUSTION ENGINE OR THE LIKE HAVING INTAKE MEANS FOR DRAWING FILTERED AIR FROM THE DEVICE AND ALSO HAVING SUCTION MEANS FOR DRAWING FROM THE DEVICE SOME UNFILTERED AIR AND FOREIGN MATERIAL FILTERED OUT OF THE FLOWING AIR, THE COMBINATION OF: A GENERALLY CYLINDRICAL HOUSING HAVING A VERTICAL AXIS AND CYLINDRICAL WALL, SAID HOUDING HAVING AN UPPER END AND A LOWER END JOINED TO SAID WALL, THE SAID UPPER END HAVING AN AIR INLET OPENING SUBSTANTIALLY CONCENTRIC WITH SAID HOUSING, FIRST ANNULAR MEANS CONCENTRICALLY MOUNTED WITHIN SAID HOUSING FOR CHANGING THE DIRECTION OF AIR FLOW FROM DOWNWARDLY FROM SAID INLET TO RADIALLY OUTWARDLY AND UPWARDLY IN SAID HOUSING WHEREBY FOREIGN MATERIAL IS INERTIALLY DISCHARGED FROM THE FLOWING AIR, SAID FIRST MEANS INCLUDING A PLURALITY OF VERTICALLY SPACED ANNULAR VANE MEMBERS POSITIONED CONCENTRICALLY WITH SAID HOUSING, EACH VANE MEMBER HAVING A DOWNWARDLY AND INWARDLY EXTENDING FLANGE, THE SAID LOWER END OF THE HOUSING HAVING AN ANNULAR OUTLET POSITIONED
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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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |