US3921603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal fan cooling system
Assignee: Caterpillar Inc
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Filing: 1974-03-18
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Granted: 1975-11-25
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Expires: 1994-03-18
Abstract
Abstract A centrifugal fan is disposed within a chamber formed in part by a pair of laterally spaced radiator cores and a horizontally mounted oil cooler with the centrifugal fan being effective for creating an air flow outwardly through the cores.
Inventors
- 👤 Erwin J H Bentz
- 👤 Marvin G Getz
- 👤 Roger A Stapf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/10; F01P11/08; F01P5/00; F01P5/02; F01P5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A cooling arrangement for vehicle engines comprising: A centrifugal fan mounted on a vehicle for rotation about an axis substantially parallel to the longitudinal axis of said vehicle; a plurality of radiators mounted around said fan in planes substantially parallel to the axis of said fan, including a pair of radiators through which is circulated the coolant from the engine of said vehicle, and a radiator through which the lubricating oil of said engine circulates, wherein the radiators for said engine coolant are vertically mounted on opposite sides of said fan; said radiator for said lubricating oil is horizontally mounted above said fan; and, said radiators forming a plurality of the sides of an enclosure enclosing said fan so that air expelled from said fan travels outward through said radiators substantially evenly.
Claim 2
Dependent Claim
132 words
A cooling arrangement for vehicle engines comprising: A centrifugal fan mounted on a vehicle for rotation about an axis substantially parallel to the longitudinal axis of said vehicle; a plurality of radiators mounted around said fan in planes substantially parallel to the axis of said fan, including a pair of radiators through which is circulated the coolant from the engine of said vehicle, and a radiator through which the lubricating oil of said engine circulates, wherein the radiators for said engine coolant are vertically mounted on opposite sides of said fan; said radiator for said lubricating oil is horizontally mounted above said fan; and, said radiators forming a plurality of the sides of an enclosure enclosing said fan so that air expelled from said fan travels outward through said radiators substantially evenly.
Claim 3
Dependent Claim
52 words
The cooling arrangement of claim 1 including a grill assembly enclosing said radiators and said fan; said grill assembly including frame means including cross members at the ends of said assembly; and, a shaft rotatably mounted in bearings on said cross members for rotatably supporting said fan for rotation about its axis.
Claim 4
Dependent Claim
106 words
A cooling arrangement for a vehicle comprising: a plurality of radiators including at least an oil cooling radiator and an engine coolant cooling radiator; a centrifugal fan mounted for rotation about an axis; at least one of said radiators vertically disposed on one side of said fan in a plane generally parallel to the axis of said fan; another of said radiators horizontally disposed above said fan in a plane generally parallel to the axis of said fan; and said radiators being arranged around said fan to at least partially enclose same so that air from said fan is forced through aLl said radiators substantially evenly.
Claim 5
Dependent Claim
106 words
A cooling arrangement for a vehicle comprising: a plurality of radiators including at least an oil cooling radiator and an engine coolant cooling radiator; a centrifugal fan mounted for rotation about an axis; at least one of said radiators vertically disposed on one side of said fan in a plane generally parallel to the axis of said fan; another of said radiators horizontally disposed above said fan in a plane generally parallel to the axis of said fan; and said radiators being arranged around said fan to at least partially enclose same so that air from said fan is forced through aLl said radiators substantially evenly.
Claim 6
Dependent Claim
38 words
The cooling arrangement of claim 3 wherein said vertically disposed radiator is operatively connected for circulation of engine coolant therethrough; and, the horizontally disposed one of said radiators is operatively connected for circulation of engine lubricating oil therethrough.
Claim 7
Dependent Claim
52 words
The cooling arrangement of claim 4 including a grill assembly enclosing said radiators and said fan; said grill assembly including frame means including cross members at the ends of said assembly; and, a shaft rotatably mounted in bearings on said cross members for rotatably supporting said fan for rotation about its axis.
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |