Patent US3293831A successfully refreshed from Google Patents.
US3293831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner
Assignee: Unisys Corp
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Filing: 1963-06-20
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Granted: 1966-12-27
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 James H Hollyday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:50
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
AN AIR CLEANER FOR A COMBUSTION ENGINE COMPRISING A SUPPORT, A ROTOR CARRIED ON SAID SUPPORT, A SCREEN CARRIED ON SAID ROTOR, SAID SCREEN HAVING AN INSIDE AND AN OUTSIDE SURFACE, AN AIR INLET DUCT HAVING AN END ADJACENT ONE LOCATION ALONG THE INSIDE OF SAID SCREEN TO RECEIVE AIR PASSED THROUGH THE SCREEN FROM THE OUTSIDE AND CONDUCT THE AIR TO AN OPPOSITE END COMMUNICATING WITH THE ENGINE, AN EXHAUST DUCT HAVING ONE END RECEIVING GASES FROM THE ENGINE AND CONDUCTING THEM TO AN OPPOSITE END ADJACENT ANOTHER LOCATION ALONG THE INSIDE OF SAID SCREEN TO EJECT THE GASES THROUGH THE SCREEN TO THE OUTSIDE, SAID ROTOR HAVING VANES THEREON, AND SAID EXHAUST DUCT HAVING A PORT THROUGH WHICH A PORTION OF THE ENGINE GASES PASS, SAID PORT AND VANES BEING SO LOCATED RELATIVE TO EACH OTHER THAT THE GASES MOVING THROUGH THE PORT PASS OVER SAID VANES AND ROTATE SAID ROTOR WHEREBY SUCCESSIVE PORTIONS OF SAID SCREEN PASS THE OPPOSITE END OF SAID EXHAUST DUCT TO HAVE MATERIAL CLEANED THEREFROM AFTER WHICH SUCH PORTIONS PASS SAID INLET DUCT.
Claim 2
Dependent Claim
180 words
AN AIR CLEANER FOR A COMBUSTION ENGINE COMPRISING A SUPPORT, A ROTOR CARRIED ON SAID SUPPORT, A SCREEN CARRIED ON SAID ROTOR, SAID SCREEN HAVING AN INSIDE AND AN OUTSIDE SURFACE, AN AIR INLET DUCT HAVING AN END ADJACENT ONE LOCATION ALONG THE INSIDE OF SAID SCREEN TO RECEIVE AIR PASSED THROUGH THE SCREEN FROM THE OUTSIDE AND CONDUCT THE AIR TO AN OPPOSITE END COMMUNICATING WITH THE ENGINE, AN EXHAUST DUCT HAVING ONE END RECEIVING GASES FROM THE ENGINE AND CONDUCTING THEM TO AN OPPOSITE END ADJACENT ANOTHER LOCATION ALONG THE INSIDE OF SAID SCREEN TO EJECT THE GASES THROUGH THE SCREEN TO THE OUTSIDE, SAID ROTOR HAVING VANES THEREON, AND SAID EXHAUST DUCT HAVING A PORT THROUGH WHICH A PORTION OF THE ENGINE GASES PASS, SAID PORT AND VANES BEING SO LOCATED RELATIVE TO EACH OTHER THAT THE GASES MOVING THROUGH THE PORT PASS OVER SAID VANES AND ROTATE SAID ROTOR WHEREBY SUCCESSIVE PORTIONS OF SAID SCREEN PASS THE OPPOSITE END OF SAID EXHAUST DUCT TO HAVE MATERIAL CLEANED THEREFROM AFTER WHICH SUCH PORTIONS PASS SAID INLET DUCT.
References Cited (Backward Citations)
US1701782A
Cited
FR683986A
Cited
US2474478A
Cited
US2795291A
Cited
US2823656A
Cited
US3186389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |