US4377203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator equipped with a centrifugal fan
Assignee: Komatsu Ltd
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Filing: 1981-05-18
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Granted: 1983-03-22
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Expires: 2001-05-18
Abstract
Abstract A centrifugal fan is disposed within a chamber encircled in part by a radiator assembly with the centrifugal fan being effective for creating an air flow outwardly through radiator cores. The radiator assembly comprises a first tank, a second tank and a plurality of tube-like cores interconnecting the first and second tanks.
Inventors
- 👤 Kikuo Ejima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D1/05333; F28D9/00; F28D9/0012; F28D9/0018; F28D2001/0253; F28D2001/026; F28D2001/0273; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/303
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 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; and a radiator assembly mounted on said vehicle around the periphery of said fan, said radiator assembly comprising: a first tank arranged at one end of said fan, said first tank having an annular inner face and a substantially rectangular outer face and having further formed therein a partition wall separating said first tank into a first and a second chamber, said first chamber being connected to an inlet pipe for engine coolant and said second chamber being connected to an outlet pipe for engine coolant; a second tank arranged at the other end of said fan, said second tank having an annular inner face and a substantially rectangular outer face; and a plurality of tubes interconnecting said first and second tanks, each of said tubes having a plurality of fins formed thereon.
Claim 2
Dependent Claim
161 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; and a radiator assembly mounted on said vehicle around the periphery of said fan, said radiator assembly comprising: a first tank arranged at one end of said fan, said first tank having an annular inner face and a substantially rectangular outer face and having further formed therein a partition wall separating said first tank into a first and a second chamber, said first chamber being connected to an inlet pipe for engine coolant and said second chamber being connected to an outlet pipe for engine coolant; a second tank arranged at the other end of said fan, said second tank having an annular inner face and a substantially rectangular outer face; and a plurality of tubes interconnecting said first and second tanks, each of said tubes having a plurality of fins formed thereon.
Claim 3
Dependent Claim
26 words
A cooling arrangement for vehicle engines are recited in claim 1 wherein axial length of said centrifugal fan is made longer than that of said tubes.
Claim 4
Dependent Claim
22 words
A cooling arrangement for vehicle engines as recited in claim 1 or 2 wherein said centrifugal fan is of both-end suction type.
Claim 5
Dependent Claim
32 words
A cooling arrangement for vehicle engines as recited in claim 3 wherein the ratio between the inner and outer diameters of said centrifugal fan is made from about 0.7 to about 0.9.
Claim 6
Dependent Claim
34 words
A cooling arrangement for vehicle engines as recited in claim 1 or 2 wherein each of said tubes has an elliptical shape in cross-section and is inclined toward the rotating direction of said fan.
Claim 7
Dependent Claim
49 words
The cooling arrangement of claim 5 in which the elliptical shape in cross-section is arranged to be inclined forwardly in the direction of the rotation of the fan with an angle relative to a normal line passing through the center of the fan for reducing the air flow resistance.
Claim 8
Dependent Claim
58 words
A cooling arrangement for vehicle engines as recited in claim 1 wherein said partition wall is disposed to divide said first tank into said first and second chambers in such a manner that said first chamber is composed of an upper-half of said first tank and said second chamber is composed of a lower-half of said first tank.
Claim 9
Dependent Claim
181 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; and a radiator assembly mounted on said vehicle around the periphery of said fan, said radiator assembly comprising: a first tank arranged at one end of said fan, said first tank having an annular inner face and a substantially rectangular outer face and having further formed therein a partition wall separating said first tank into a first and a second chamber in such a manner that said first chamber is radially outwardly located and said second chamber is radially inwardly located; said first chamber being connected to a first pipe for engine coolant and said second chamber being connected to a second pipe for engine coolant; a second tank arranged at the other end of said fan, said second tank having an annular inner face and a substantially rectangular outer face; and a plurality of tubes interconnecting said first and second tanks, each of said tubes having a plurality of fins formed thereon.
Claim 10
Dependent Claim
181 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; and a radiator assembly mounted on said vehicle around the periphery of said fan, said radiator assembly comprising: a first tank arranged at one end of said fan, said first tank having an annular inner face and a substantially rectangular outer face and having further formed therein a partition wall separating said first tank into a first and a second chamber in such a manner that said first chamber is radially outwardly located and said second chamber is radially inwardly located; said first chamber being connected to a first pipe for engine coolant and said second chamber being connected to a second pipe for engine coolant; a second tank arranged at the other end of said fan, said second tank having an annular inner face and a substantially rectangular outer face; and a plurality of tubes interconnecting said first and second tanks, each of said tubes having a plurality of fins formed thereon.
Claim 11
Dependent Claim
23 words
The cooling arrangement of claim 8 in which the first pipe is an inlet pipe and the second pipe is an outlet pipe.
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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |