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US4590891A Expired / Lapsed US ⏱️ 0.0 years remaining

Engine cooling system in field machinery

Assignee: Kawasaki Motors Ltd
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Filing: 1984-11-20
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Granted: 1986-05-27
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Expires: 2004-11-20
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Abstract

Abstract An engine cooling system for field machinery such as tractors equipped with a lawnmower. A cooling system is arranged with a radiator placed in a slanting position in the upper rear part of engine within engine room and with the lower end of the radiator placed on the engine side. A cooling fan is so mounted that the cooling air induced by the radiator cooling fan passes through upward from under the radiator. The cooling fan is preferably placed downstream in the cooling air flow of the radiator, that means, above the radiator. Further it is desirable that a cooling air passage is so arranged that the cooling air which has passed through the radiator may blow out of air outlet through the vicinity of the engine, and that the outgoing air flow is so directed that hay blown up by field machinery's travels and operations be kept away from cooling air inlet, for instance, being directed forward ahead of the engine.

Inventors

  • 👤 Tetsuzo Fujikawa
  • 👤 Tamba Shinichi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 23:50
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 126 words
A cooling system for an engine in a compartment forming part of a farm machine exposed to small plant particles, comprising a cooling radiator in an upper portion of said compartment and rearwardly of said engine, said radiator being disposed angularly from the horizontal with the lower end thereof slanting toward said engine; a cooling fan disposed above said radiator to draw cool air from beneath and upwardly through said radiator; a cooling air inlet disposed in the upper rear portion of said compartment; and an exhaust air outlet disposed near the front end of said compartment to direct the exhaust air ahead of said machine, whereby to blow such plant particles ahead of the machine and minimize the amount thereof reaching said cooling air inlet.
Claim 2
Dependent Claim 126 words
A cooling system for an engine in a compartment forming part of a farm machine exposed to small plant particles, comprising a cooling radiator in an upper portion of said compartment and rearwardly of said engine, said radiator being disposed angularly from the horizontal with the lower end thereof slanting toward said engine; a cooling fan disposed above said radiator to draw cool air from beneath and upwardly through said radiator; a cooling air inlet disposed in the upper rear portion of said compartment; and an exhaust air outlet disposed near the front end of said compartment to direct the exhaust air ahead of said machine, whereby to blow such plant particles ahead of the machine and minimize the amount thereof reaching said cooling air inlet.

References Cited (Backward Citations)

US2913065A Cited
US3727712A Cited
US4117902A Cited
US4492282A Cited
DE3110447A1 Cited
US4445587A Cited
US4501129A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-05-26 1989-11-25 1990-05-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-05-26 1993-11-25 1994-05-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-05-26 1997-11-25 1998-05-27 $7700.00 Window Closed / Lapsed

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