Patent US3868992A successfully refreshed from Google Patents.
US3868992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gross flow cooling system
Assignee: Caterpillar Inc
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Filing: 1973-02-20
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Granted: 1975-03-04
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Expires: 1993-02-20
Abstract
Abstract A cooling system, mounted on the rearward end of a tractor, comprises a pair of fans attached to a common drive shaft disposed on the longitudinal axis of the tractor and a pair of vertically disposed and laterally spaced radiators. A vertically disposed baffle is connected between the radiators to define separate chambers for receiving air from the fans.
Inventors
- 👤 Marvin G Getz
- 👤 Erwin J H Bentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:32
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/08; E02F9/0858; E02F9/0866; B; B60; B60K; B60K11/00; B60K11/02; B60K11/04; B60K11/08; F; F01; F01P; F01P5/00; F01P5/02; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/162; F04D19/00; F04D19/002; F04D25/00; F04D25/16; F04D25/166
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
235 words
A cooling system, mounted on a frame, comprising: a pair of axially spaced and rotatable first and second fan means for pumping air into chamber means defined therebetween, drive means operatively connected to each of said first and second fan means for selectively rotating the same, baffle means comprised of a single plate disposed within said chamber, said drive means comprising a drive shaft extending through said baffle means and connected at opposite ends thereof to said first and second fan means, first fluid cooling means extending traversely between said first and second fan means to define a first side of said chamber means whereby air pumped into said chamber means will exit through said first fluid cooling means, a second fluid cooling means extending traversely between said first and second fan means in at least generally parallel and laterally spaced relationship relative to said first fluid cooling means to define a second side of said chamber means, further comprising a third fluid cooling means extending traversely between said first and second fluid cooling means and adjacent to said first fan means to define a third side of said chamber means, and each of said first and second fan means comprising a plurality of fan blades, a first chordal angle of the fan blades of said first fan means being greater than a second chordal angle of the fan blades of said second fan means.
Claim 2
Dependent Claim
235 words
A cooling system, mounted on a frame, comprising: a pair of axially spaced and rotatable first and second fan means for pumping air into chamber means defined therebetween, drive means operatively connected to each of said first and second fan means for selectively rotating the same, baffle means comprised of a single plate disposed within said chamber, said drive means comprising a drive shaft extending through said baffle means and connected at opposite ends thereof to said first and second fan means, first fluid cooling means extending traversely between said first and second fan means to define a first side of said chamber means whereby air pumped into said chamber means will exit through said first fluid cooling means, a second fluid cooling means extending traversely between said first and second fan means in at least generally parallel and laterally spaced relationship relative to said first fluid cooling means to define a second side of said chamber means, further comprising a third fluid cooling means extending traversely between said first and second fluid cooling means and adjacent to said first fan means to define a third side of said chamber means, and each of said first and second fan means comprising a plurality of fan blades, a first chordal angle of the fan blades of said first fan means being greater than a second chordal angle of the fan blades of said second fan means.
Claim 3
Dependent Claim
19 words
The cooling system of claim 1 wherein each of said first and second fluid cooling means constitutes a radiator.
Claim 4
Dependent Claim
15 words
The cooling system of claim 1 wherein said third cooling means constitutes an oil cooler.
Claim 5
Dependent Claim
37 words
The cooling system of claim 1 further comprising a pair of axially spaced first and second bracing means detachably connected to a support and extending traversely between and connected to said first and second fluid cooling means.
Claim 6
Dependent Claim
49 words
The cooling system of claim 4 further comprising a bracket secured to each end of each of said first and second fluid cooling means and further secured to each of said first and second bracing means, each of said brackets removably attached to said support by releasable fastening means.
Claim 7
Dependent Claim
33 words
The cooling system of claim 4 wherein said baffle means extends transversely between and connects to said first and second fluid cooling means to separate said chamber means into first and second chambers.
Claim 8
Dependent Claim
39 words
The cooling system of claim 4 wherein said a drive shaft is rotatably mounted on each of said first and second bracing means by bearing means and connected at opposite ends thereof to said first and second fan means.
Claim 9
Dependent Claim
41 words
The cooling system of claim 1 wherein said frame is disposed on a rearward end of a vehicle adapted for movement along a longitudinal axis thereof and further comprising an operator''s station mounted on said vehicle, forwardly of said cooling system.
Claim 10
Dependent Claim
35 words
The cooling system of claim 8 wherein said vehicle comprises a pair of endless track assemblies, a drive sprocket operatively connected to each of said endless track assemblies and means for rotating said drive sprockets.
Claim 11
Dependent Claim
60 words
The cooling system of claim 9 wherein said drive sprockets are positioned vertically below and adjacent to said cooling system and wherein said fluid cooling means is disposed at least generally parallel to the longitudinal axis of said vehicle whereby air exiting from said fluid cooling means will impel dust raised by said track assemblies laterally away from said vehicle.
Claim 12
Dependent Claim
20 words
The cooling system of claim 1 wherein said first chordal angle approximates 27* and said second chordal angle approximates 24*.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |