US3134369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooling of rotary-piston engines
Assignee: Audi AG
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Filing: 1962-03-07
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Granted: 1964-05-26
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Expires: 1982-03-07
Abstract
No abstract record available.
Inventors
- 👤 Schlor Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:23
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AIR-COOLING MEANS FOR ROTARY-PISTON ENGINES, COMPRISING IN COMBINATION AN ENGINE HAVING A HOUSING AND HAVING A FIRST REGION OF RELATIVELY HIGH HEAT INPUT AND A SECOND REGION OF LESSER HEAT INPUT, A SHELL SURROUNDING SAID HOUSING AND DIVIDED INTO A PAIR OF VOLUTES SURROUNDING DIFFERENT PORTIONS OF SAID HOUSING AND CONVEYING COOLING AIR THEREACROSS, EACH OF SAID VOLUTES HAVING AN INTAKE OPENING AND A DISCHARGE OPENING, A BLOWER POSITIONED BY SAID SHELL AND SUPPLYING COOLING AIR TO BOTH SAID INTAKE OPENINGS, ONE OF SAID VOLUTES BEING OF LARGER CROSS-SECTION THAN THE OTHER AND HAVING A LARGER INTAKE OPENING AND RECEIVING A LARGER PORTION OF THE COOLING AIR SUPPLIED BY SAID BLOWER AND POSITIONED TO PASS SAID COOLING AIR ACROSS SAID FIRST REGION OF HIGHER HEAT INPUT, AND THE OTHER OF SAID VOLUTES BEING POSITIONED TO PASS SAID COOLING AIR ACROSS SAID SECOND REGION OF LESSER HEAT INPUT.
Claim 2
Dependent Claim
147 words
AIR-COOLING MEANS FOR ROTARY-PISTON ENGINES, COMPRISING IN COMBINATION AN ENGINE HAVING A HOUSING AND HAVING A FIRST REGION OF RELATIVELY HIGH HEAT INPUT AND A SECOND REGION OF LESSER HEAT INPUT, A SHELL SURROUNDING SAID HOUSING AND DIVIDED INTO A PAIR OF VOLUTES SURROUNDING DIFFERENT PORTIONS OF SAID HOUSING AND CONVEYING COOLING AIR THEREACROSS, EACH OF SAID VOLUTES HAVING AN INTAKE OPENING AND A DISCHARGE OPENING, A BLOWER POSITIONED BY SAID SHELL AND SUPPLYING COOLING AIR TO BOTH SAID INTAKE OPENINGS, ONE OF SAID VOLUTES BEING OF LARGER CROSS-SECTION THAN THE OTHER AND HAVING A LARGER INTAKE OPENING AND RECEIVING A LARGER PORTION OF THE COOLING AIR SUPPLIED BY SAID BLOWER AND POSITIONED TO PASS SAID COOLING AIR ACROSS SAID FIRST REGION OF HIGHER HEAT INPUT, AND THE OTHER OF SAID VOLUTES BEING POSITIONED TO PASS SAID COOLING AIR ACROSS SAID SECOND REGION OF LESSER HEAT INPUT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |