Patent US4461246A successfully refreshed from Google Patents.
US4461246A
Expired / Lapsed
US
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Hydraulically operated fan assembly for a heat exchange assembly
Assignee: Individual
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Filing: 1982-11-05
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Granted: 1984-07-24
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Expires: 2002-11-05
Abstract
Abstract There is disclosed a fan assembly for a heat exchanger such as a radiator for an internal combustion engine, and comprised of a fan driven by a hydraulic motor in fluid flow communication with a hydraulic pump in response to the opening-closing of a thermostatic switch. This fan is preferably formed of two blades and of the axial flow, propeller type S-configuration.
Inventors
- 👤 Roger Clemente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:29
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081; F01P7/04; F01P7/044
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
A fan assembly for a heat exchanger assembly associated with a vehicle having an internal combustion engine, wherein a heat transfer fluid is passed through said heat exchanger assembly, which comprises: a hydraulic motor including a drive shaft mounted proximate said heat exchanger assembly; a fan mounted on said drive shaft of said hydraulic motor; a hydraulic pump including a shaft mounted proximate said internal combustion engine; an electrically operated magnetic clutch assembly disposed on said shaft of said hydraulic pump; fluid conduit means including a reservoir disposed between said hydraulic pump and said hydraulic motor; means for driving said hydraulic pump by said internal combustion engine; and a switch means responsive to a preselect condition to assume an operative mode to activate said electrically operated magnetic clutch assembly thereby to cause said shaft of said hydraulic pump to rotate and effect fluid flow of hydraulic fluid from said hydraulic pump to said hydraulic motor thereby to rotate said fan.
Claim 2
Dependent Claim
160 words
A fan assembly for a heat exchanger assembly associated with a vehicle having an internal combustion engine, wherein a heat transfer fluid is passed through said heat exchanger assembly, which comprises: a hydraulic motor including a drive shaft mounted proximate said heat exchanger assembly; a fan mounted on said drive shaft of said hydraulic motor; a hydraulic pump including a shaft mounted proximate said internal combustion engine; an electrically operated magnetic clutch assembly disposed on said shaft of said hydraulic pump; fluid conduit means including a reservoir disposed between said hydraulic pump and said hydraulic motor; means for driving said hydraulic pump by said internal combustion engine; and a switch means responsive to a preselect condition to assume an operative mode to activate said electrically operated magnetic clutch assembly thereby to cause said shaft of said hydraulic pump to rotate and effect fluid flow of hydraulic fluid from said hydraulic pump to said hydraulic motor thereby to rotate said fan.
Claim 3
Dependent Claim
36 words
The fan assembly as defined in claim 1 wherein said magnetic clutch assembly includes a pulley and said internal combustion engine is provided with a pulley, said assembly further including belt means disposed about said pulleys.
Claim 4
Dependent Claim
22 words
The fan assembly as defined in claim 2 wherein said switch is a thermostatic switch responsive to a preselect upper temperature level.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |