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US4738327A Expired / Lapsed US ⏱️ 0.0 years remaining

Riding type mower

Assignee: Kubota Corp
•
Filing: 1986-09-03
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Granted: 1988-04-19
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Expires: 2006-09-03
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Abstract

Abstract A riding type mower, having a vehicle body with a front and a rear end, includes a bonnet disposed rearwardly of an operator's seat and having top and bottom sides, opposite lateral sides and a rear side. The bonnet houses a fuel tank, an engine, an oil cooler, a cooling fan and a radiator, positioned on the vehicle body in that order rearwardly of the operator's seat. The cooling fan forces cooling air from the front rearward. The bonnet is formed with a cooling air discharge opening in its rear side and a cooling air intake opening in its bottom side and lateral sides.

Inventors

  • 👤 Terutaka Takei

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 13:30
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/10; B; B60; B60K; B60K11/00; B60K11/02; B60K11/04; F02; F02B; F02B63/00

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 233 words
A riding type mower comprising a vehicle body having a front and a rear, an operator seat located on said vehicle body, a mower mounted to a front part of said vehicle body and being lower than said operator seat, a fuel tank, an engine, a cooling fan and a radiator being positioned on said vehicle body in that order rearwardly of said operator seat, said cooling fan being constructed to conduct cooling air from the front to the rear of said vehicle body, a bonnet covering said fuel tank, said engine, said cooling fan, and said radiator, said bonnet comprising a top side and two lateral sides which extend over and along the sides of said fuel tank, said engine, said cooling fan and said radiator, said bonnet also comprising a rear side which shields the rear of said radiator, bottom sides which extend between the vehicle body and bottom edges of said lateral sides, and a front side having an opening, said fuel tank being disposed inside said opening for closure thereof, said bonnet being pivoted below said rear side to said vehicle body so that said rear side and said top side are pivotally movable together, cooling air intake openings are disposed in said lateral sides and in said bottom sides forwardly of said cooling fan, and a cooling air discharge opening formed in said rear side of said bonnet.
Claim 2
Dependent Claim 233 words
A riding type mower comprising a vehicle body having a front and a rear, an operator seat located on said vehicle body, a mower mounted to a front part of said vehicle body and being lower than said operator seat, a fuel tank, an engine, a cooling fan and a radiator being positioned on said vehicle body in that order rearwardly of said operator seat, said cooling fan being constructed to conduct cooling air from the front to the rear of said vehicle body, a bonnet covering said fuel tank, said engine, said cooling fan, and said radiator, said bonnet comprising a top side and two lateral sides which extend over and along the sides of said fuel tank, said engine, said cooling fan and said radiator, said bonnet also comprising a rear side which shields the rear of said radiator, bottom sides which extend between the vehicle body and bottom edges of said lateral sides, and a front side having an opening, said fuel tank being disposed inside said opening for closure thereof, said bonnet being pivoted below said rear side to said vehicle body so that said rear side and said top side are pivotally movable together, cooling air intake openings are disposed in said lateral sides and in said bottom sides forwardly of said cooling fan, and a cooling air discharge opening formed in said rear side of said bonnet.
Claim 3
Dependent Claim 22 words
A riding type mower as defined in claim 1, wherein an oil cooler is disposed between said engine and said cooling fan.
Claim 4
Dependent Claim 24 words
A riding type mower as defined in claim 1, wherein an oil cooler is disposed at one side with respect to a drive shaft.
Claim 5
Dependent Claim 44 words
A riding type mower as defined in claim 2, wherein said cooling fan is fixed to a drive shaft rotatably supported by a rear side of said engine, and said drive shaft is operatively connected to a crankshaft of said engine by transmission means.

References Cited (Backward Citations)

US3064748A Cited
FR1336852A Cited
DE2123358A1 Cited
US3847241A Cited
US4086976A Cited
US4304314A Cited
JPS5611177A Cited
JPS6077327A Cited
US4640378A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-04-19 1991-10-19 1992-04-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-04-19 1995-10-19 1996-04-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-04-19 1999-10-19 2000-04-19 $7700.00 Window Closed / Lapsed

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