US3727593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for cooling internal combustion engines
Assignee: Daimler Benz AG
•
Filing: 1971-12-17
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Granted: 1973-04-17
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Expires: 1991-12-17
Abstract
Abstract An installation for cooling internal combustion engines for motor vehicles by means of a fan driven by the internal combustion engine, possibly by way of an engageable and disengageable coupling controlled, for example, as a function of temperature; the cooling installation is arranged between the radiator and the internal combustion engine and utilizes a socalled semi-axial fan with a hub that increases conically in the direction toward the engine and possesses substantially straight blades that rotate within an outer casing ring secured at the radiator or radiator mounting.
Inventors
- 👤 K Enke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:42
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P5/00; F01P5/02; F01P5/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
71 words
An installation for cooling a motor vehicle internal combustion engine by means of a fan driven by the internal combustion engine, which is arranged between a radiator means and the internal combustion engine, characterized in that the fan is a semi-axial fan which includes a conical hub strongly increasing in the direction toward the engine and essentially rectilinear blade means rotating within an external casing means secured at the radiator means.
Claim 2
Dependent Claim
71 words
An installation for cooling a motor vehicle internal combustion engine by means of a fan driven by the internal combustion engine, which is arranged between a radiator means and the internal combustion engine, characterized in that the fan is a semi-axial fan which includes a conical hub strongly increasing in the direction toward the engine and essentially rectilinear blade means rotating within an external casing means secured at the radiator means.
Claim 3
Dependent Claim
27 words
An installation according to claim 1, characterized in that the fan is driven from the internal combustion engine by way of an engageable and disengageable coupling means.
Claim 4
Dependent Claim
19 words
An installation according to claim 2, characterized in that the coupling means is controlled as a function of temperature.
Claim 5
Dependent Claim
20 words
An installation according to claim 1, characterized in that the outer casing ring means is secured at the radiator support.
Claim 6
Dependent Claim
27 words
An installation according to claim 1, characterized in that the hub has an inclination of about 45* which remains substantially constant over the entire axial blade width.
Claim 7
Dependent Claim
28 words
An installation according to claim 5, characterized in that the outer casing means covers the blade means in their axial dimension approximately to about 60 to 70 percent.
Claim 8
Dependent Claim
33 words
An installation according to claim 6, characterized in that the casing means, as viewed in axial cross section, increases conically in the same direction as the fan hub though with a lesser conicity.
Claim 9
Dependent Claim
32 words
An installation according to claim 7, characterized in that the hub at its side facing the radiator-as viewed in cross section- is bent back bulge-shaped and passes over into a securing flange.
Claim 10
Dependent Claim
26 words
An installation according to claim 8, characterized by the use of approximately 12 blade means which partially overlap one another as viewed in the axial direction.
Claim 11
Dependent Claim
27 words
An installation according to claim 9, characterized in that the fan is driven from the internal combustion engine by way of an engageable and disengageable coupling means.
Claim 12
Dependent Claim
19 words
An installation according to claim 10, characterized in that the coupling means is controlled as a function of temperature.
Claim 13
Dependent Claim
27 words
An installation according to claim 1, characterized in that outer casing means covers the blade means in their axial dimension approximately to about 60 to 70 percent.
Claim 14
Dependent Claim
33 words
An installation according to claim 12, characterized in that the casing means, as viewed in axial cross section, increases conically in the same direction as the fan hub though with a lesser conicity.
Claim 15
Dependent Claim
32 words
An installation according to claim 1, characterized in that the hub at its side facing the radiator- as viewed in cross section-is bent back bulge-shaped and passes over into a securing flange.
Claim 16
Dependent Claim
26 words
An installation according to claim 1, characterized by the use of approximately 12 blade means which partially overlap one another as viewed in the axial direction.
References Cited (Backward Citations)
BE539073A
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US1374901A
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US1616593A
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US2376939A
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FR927859A
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US2626744A
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US2618432A
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US2696074A
Cited
US2847156A
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US2936948A
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US2808817A
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US2896595A
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GB849744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |