Kubota Corporation

Yoji Fujiwara

Akira Minoura

Masatake Murakawa

Mikio Yuki

Ryozo Imanishi

Masatsugu Tone

Eriya Harada

Masagi Kure

A lawn mower includes a blade housing enclosing grass cutting blades and having a lateral discharge opening, a blower unit connected to the discharge opening, and a duct connected to the blower unit for transporting grass clippings to a grass catcher. The blower unit includes an elbow-like lower blower housing connected to the blade housing, an upper blower housing having a substantially vertical cylindrical side wall connected to the duct, and an impeller mounted in the upper blower housing to be rotatable about a vertical axis. The impeller has a plane of rotation above a plane of rotation of the blades. The lower blower housing includes a flange for connection to the upper blower housing. The flange has an opening elongated in a direction along a passage defined by the two blower housings. This opening has width approximately half of the diameter of the impeller.

Lawn mower having a blower for transporting grass clippings to a grass

A working vehicle has a grass cutting unit vertically movable relative to a vehicle body, a lift mechanism for raising and lowering the grass cutting unit, a clutch for making and breaking transmission of blade driving power to the grass cutting unit, and a device for controlling the lift mechanism. The control device controls the lift mechanism to lower the grass cutting unit when the clutch is operated to transmit power to the grass cutting unit, and to raise the grass cutting unit when the clutch is operated to break power tranmission to the grass cutting unit. According to this construction, only a device for actuating the clutch may be operated to switch between an operative condition in which the grass cutting unit is lowered and its cutting blades driven, and an inoperative condition in which the grass cutting unit is raised with the cutting blades stopped. Alternatively, the control device may control the clutch through a device for actuating the lift mechanism. In this case, only the device for actuating the lift mechanism may be operated to switch between the operative condition in which the grass cutting unit is lowered and its cutting blades driven, and the inoperative condition in which the grass cutting unit is raised with the cutting blades stopped.

Working vehicle having a mower unit vertically movable relative to a

A cooling system for a vertical, liquid cooled engine having a first passage for guiding cooling air to a cooling fan disposed above the engine, and a second passage for guiding the cooling air drawn by the cooling fan to flow past the engine and to be exhausted forwardly and downwardly of the engine. The first passage includes an air inlet defined rearwardly of the engine, and is defined by part of an engine hood, a vertical bracket plate erected behind the engine, and a partition extending from the engine hood over an upper surface of the engine. Devices accessory to the engine which are vulnerable to the heat are mounted in a space inside the first passage. The second passage is formed by an air guide cover enveloping the engine and cooling fan and defining an opening in a region opposed to the cooling fan. The air guide cover includes a front portion extending downwardly along the cylinder head. The second passage contains a liquid cooler disposed between an upper surface of the cylinder head and the air guide cover, and a muffler in an exhaust region the second passage. The first and second passages are interconnected through the cooling fan, and define a substantially airtight space from air intake end to exhaust end.

Cooling system for a liquid cooled engine

A working vehicle comprising an engine mounted on a vehicle frame, a control box mounted on the vehicle frame, and a radiator erected on the vehicle frame between the engine and the control box structure. A dust-proof space is defined by the control box, the radiator and a hinged hood covering the engine. Elastic sealing elements are arranged between opposite lateral sides of the control box and the radiator, and between an upper end of the radiator and the hood. The hood in a closed position presses upon the upper elastic elements to provide an additional support for the radiator and to seal the dust-proof space.

Growing community of inventors

Osaka, Japan

Yoji Fujiwara