Patent US2374741A successfully refreshed from Google Patents.
Patent US3211136A successfully refreshed from Google Patents.
US3211136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan drive for vehicles
Assignee: Daimler Benz AG
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Filing: 1962-01-31
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Granted: 1965-10-12
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Expires: 1982-01-31
Abstract
No abstract record available.
Inventors
- 👤 Manfred H Burckhardt
- 👤 Roder Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:22
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/06; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/042; F16D33/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN AN INSTALLATION FOR COUPLING A FAN TO AN INTERNAL COMBUSTION ENGINE IN VEHICLES HAVING AN ENGINE COOLING SYSTEM, ESPECIALLY IN TRUCKS, INCLUDING A HYDRODYNAMIC COUPLING PROVIDING WITH DRIVE MEANS AND THROUGH WHICH FLOWS A COUPLING LIQUID, THE IMPROVEMENT CONSISTING ESSENTIALLY OF A CIRCULATORY SYSTEM FOR THE COUPLING LIQUID OF SAID HYDRODYNAMIC COUPLING, THE FLUID PRESSURE IN SAID CIRCULATORY SYSTEM BEING INDEPENDENT FROM THE FLUID PRESSURE IN SAID ENGINE COOLING SYSTEM AND INCLUDING PUMP MEANS FOR SUPPLYING AND COUPLING LIQUID TO SAID COUPLING, SAID PUMP MEANS BEING DRIVEN BY THE DRIVE MEANS OF THE HYDRODYNAMIC COUPLING AND BEING UNITED STRUCTURALLY THERWITH.
Claim 2
Dependent Claim
101 words
IN AN INSTALLATION FOR COUPLING A FAN TO AN INTERNAL COMBUSTION ENGINE IN VEHICLES HAVING AN ENGINE COOLING SYSTEM, ESPECIALLY IN TRUCKS, INCLUDING A HYDRODYNAMIC COUPLING PROVIDING WITH DRIVE MEANS AND THROUGH WHICH FLOWS A COUPLING LIQUID, THE IMPROVEMENT CONSISTING ESSENTIALLY OF A CIRCULATORY SYSTEM FOR THE COUPLING LIQUID OF SAID HYDRODYNAMIC COUPLING, THE FLUID PRESSURE IN SAID CIRCULATORY SYSTEM BEING INDEPENDENT FROM THE FLUID PRESSURE IN SAID ENGINE COOLING SYSTEM AND INCLUDING PUMP MEANS FOR SUPPLYING AND COUPLING LIQUID TO SAID COUPLING, SAID PUMP MEANS BEING DRIVEN BY THE DRIVE MEANS OF THE HYDRODYNAMIC COUPLING AND BEING UNITED STRUCTURALLY THERWITH.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |