Patent US3557549A successfully refreshed from Google Patents.
US3557549A
Expired / Lapsed
US
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Turbocharger system for internal combustion engine
Assignee: Caterpillar Inc
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Filing: 1969-03-21
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Granted: 1971-01-26
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Expires: 1989-03-21
Abstract
Abstract A TURBOCHARGER COMPRISES A TURBINE HAVING AN ANNULAR PARTITION DISPOSED IN THE HOUSING THEREOF TO DIVIDE THE HOUSING''S CHAMBER INTO TWO SEPARATE COMPARTMENTS. A FLAPPER VALVE IS PIVOTALLY MOUNTED AT THE INLET TO SUCH HOUSING AND IS NORMALLY POSITIONED TO BE SUBSTANTIALLY COPLANAR WITH THE PARTITION TO PERMIT ENGINE EXHAUST GASES TO FLOW INTO BOTH COMPARTMENTS. DURING THE IDLE PHASE OF ENGINE OPERATION, FOR EXAMPLE, THE FLAPPER VALVE AUTOMATERIALLY PIVOTS TO BLOCK GAS FLOW INTO ONE OF THE COMPARTMENTS AND TO DIRECT ALL GAS FLOW INTO THE OTHER COMPARTMENT.
Inventors
- 👤 Donald F Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:04
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/148; F02; F02B; F02B37/00; F02B37/001; F02B37/002; F02B37/02; F02B37/025; F02B37/12; F02B37/22; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |