Patent US5438544A successfully refreshed from Google Patents.
Patent US3587534A successfully refreshed from Google Patents.
US3587534A
Expired / Lapsed
US
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Suction system for rotary piston internal combustion engines
Assignee: Sachsenring Automobilwerke VEB
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Filing: 1969-05-13
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Granted: 1971-06-28
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Expires: 1989-05-13
Abstract
Abstract A ROTARY TYPE INTERNAL COMUBSTION ENGINE OF TROCHOIDAL CONFIGURATION, INCLUDING A SINGLE-STAGE CARBURETOR, AN AUXILIARY SHUTOFF DEVICE IN THE INDUCTION PASSAGE ANTERIOR TO THE INLET PORT AND A SUPPLEMENTARY SUCTION SYSTEM DISPOSED ON THE EXTERIOR OF THE BODY FORMING THE INDUCTION PASSAGE, AND COALIGNED WITH THE SHUTOFF DEVICE THEREIN. THE SUCTION SYSTEM INCLUDES AN IDLE FUEL PASSAGE, AND MEANS FOR REGULATION THE AMOUNT OF THE FUEL-AIR MIXTURE INTRODUCED INTO THE INLET PORT IN ORDER TO ACHIEVE THE SMOOTH OPERATION OF THE ENGINE DURING IDLING AND AT VARIABLE LOADS. D R A W I N G
Inventors
- 👤 Wolfgang Weichelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:41
CPC Classifications
F; F02; F02B; F02B53/00; F02B53/10; F02B2053/005; 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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |