Abstract: A lawn mower includes a first blade having a first tip, and a second blade having a second tip, wherein the first blade and the second blade are disposed adjacent to each other, and a rotation direction of the first blade is different from a rotation direction of the second blade, wherein, in a lateral direction of the lawn mower, a guide plate is disposed between a rotation center of the first blade and a rotation center of the second blade, and the guide plate is disposed above the second blade, and the guide plate extends toward a rear of the lawn mower.

Abstract: A work machine comprising: a blade; a blade housing; and a guard pole portion provided below the blade, wherein the guard pole portion is supported by the blade housing, and the guard pole portion includes an inclined portion extending in an oblique direction with respect to a machine body longitudinal direction of the work machine.

Abstract: Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.

Abstract: A work machine comprises, a drive source, a working unit that includes a rotary member rotated by the drive source and performs a predetermined work by rotation of the rotary member, and a control unit that controls the drive source so that output of the rotary member partially takes different values in one rotation of the rotary member.

Abstract: A work machine comprising a work unit that performs work on a travel path, an internal combustion engine configured to generate power for driving the work unit, a traveling unit including a front wheel and a rear wheel, an electric motor configured to generate power for driving a first wheel of the front wheel and the rear wheel, a first clutch for switching between transmission and discontinuation of the power from the internal combustion engine to a second wheel of the front wheel and the rear wheel, and a switching control unit configured to control the first clutch based on a power consumption of the electric motor for switching between the transmission and the discontinuation.

Abstract: A work machine comprises a work unit that performs work on a travel path, an internal combustion engine configured to generate power for driving the work unit, a traveling unit including a front wheel and a rear wheel, an electric motor configured to generate power for driving a first wheel of the front wheel and the rear wheel, and a first clutch for switching between transmission and discontinuation of the power from the internal combustion engine to a second wheel of the front wheel and the rear wheel.

Abstract: In a mower provided with a center pivot axle 12, a control unit 1 controls a height adjusting mechanism 19 for a mowing unit 16 so that a grass cutting height is increased from an initial level when an absolute value of a roll angle of the center pivot axle relative to a vehicle body has exceeded a first roll angle threshold value. A cutting blade 21 is stopped when the absolute value of the roll angle has exceeded a fourth roll angle threshold value which is greater than the first roll angle threshold value.

Abstract: Power equipment such as a riding mower 2 is provided with a center pivot axle 16 for non-driven wheels 9 thereof and a rigid axle 14 for driven wheels 8. A control unit 1 of the power equipment is configured to accelerate the left driven wheel when a right end up roll angle of the center pivot axle is detected by an axle sensor 25, and to accelerate the right driven wheel when a left end up roll angle of the center pivot axle is detected by the axle sensor when substantially no steering input of a steering device 22 is detected by a steering sensor 24 so that the power equipment may maintain a straight course.

Abstract: Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.

Abstract: The power equipment such as a lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade (70) connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the work implement, and a central control unit (50) for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to operate the engine at a prescribed rotational speed with two or more of the cylinders kept activated when the clutch is engaged and the propelling device is propelling the power equipment forward, and to deactivate at least one of the cylinders when an opening of a throttle valve is below a first prescribed value for a prescribed time period.

Abstract: The lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a cutting blade (70) supported by a lawn mower main body via a cutter deck, and connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the cutting blade, a height adjustment mechanism (90) provided on the cutter deck for adjusting the height of the cutting blade, and a central control unit (50) for controlling an operation of the height adjusting mechanism, the clutch and the engine control unit. The central control unit is configured to cause the engine control unit to deactivate at least one of the cylinders when a prescribed operating condition is met, and to raise the cutting blade to a prescribed elevated height before deactivating the at least one of the cylinders.

Abstract: The power equipment such as a lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade (70) connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the work implement, and a central control unit (50) for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to start the engine with two or more of the cylinders activated, to cause the engine control unit to operate the engine at a prescribed rotational speed, and to cause the engine control unit to deactivate at least one of the cylinders when the engine has reached a stable state at the prescribed rotational speed.

Abstract: In a mower provided with a center pivot axle 12, a control unit 1 controls a height adjusting mechanism 19 for a mowing unit 16 so that a grass cutting height is increased from an initial level when an absolute value of a roll angle of the center pivot axle relative to a vehicle body has exceeded a first roll angle threshold value. A cutting blade 21 is stopped when the absolute value of the roll angle has exceeded a fourth roll angle threshold value which is greater than the first roll angle threshold value.

Abstract: Power equipment such as a riding mower 2 is provided with a center pivot axle 16 for non-driven wheels 9 thereof and a rigid axle 14 for driven wheels 8. A control unit 1 of the power equipment is configured to accelerate the left driven wheel when a right end up roll angle of the center pivot axle is detected by an axle sensor 25, and to accelerate the right driven wheel when a left end up roll angle of the center pivot axle is detected by the axle sensor when substantially no steering input of a steering device 22 is detected by a steering sensor 24 so that the power equipment may maintain a straight course.

Abstract: The power equipment such as a lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade (70) connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the work implement, and a central control unit (50) for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to start the engine with two or more of the cylinders activated, to cause the engine control unit to operate the engine at a prescribed rotational speed, and to cause the engine control unit to deactivate at least one of the cylinders when the engine has reached a stable state at the prescribed rotational speed.

Abstract: The power equipment such as a lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade (70) connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the work implement, and a central control unit (50) for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to operate the engine at a prescribed rotational speed with two or more of the cylinders kept activated when the clutch is engaged and the propelling device is propelling the power equipment forward, and to deactivate at least one of the cylinders when an opening of a throttle valve is below a first prescribed value for a prescribed time period.

Abstract: The lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a cutting blade (70) supported by a lawn mower main body via a cutter deck, and connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the cutting blade, a height adjustment mechanism (90) provided on the cutter deck for adjusting the height of the cutting blade, and a central control unit (50) for controlling an operation of the height adjusting mechanism, the clutch and the engine control unit. The central control unit is configured to cause the engine control unit to deactivate at least one of the cylinders when a prescribed operating condition is met, and to raise the cutting blade to a prescribed elevated height before deactivating the at least one of the cylinders.

Abstract: In an outboard motor having a prime mover, a gear mechanism transmitting a driving force of the prime mover to a propeller, and a gear case housing the gear mechanism, it is configured to have a drain bolt fastened to a drain hole bored at the gear case and constituted as a magnetic member; a stacked portion provided at an exposed part of the drain bolt in an inside of the gear case and having a conductor, an insulator and a resistive element partially making contact with the conductor that are stacked in a gravitational direction; a current detector detecting a current value conducted from the conductor to the drain bolt under a condition where voltage is applied to the conductor; and a wear debris amount detector adapted to detect an amount of wear debris of the gear mechanism deposited at the drain bolt based on the conducted current value.

Abstract: Outboard engine body is mounted via a swivel shaft to a stern bracket. Angle sensor, provided on the stern bracket, includes a contact having a maximum operating angle set to be not greater than half of a maximum steered angle of the engine body, and it outputs detection information indicative of an operating angle of the contact. Curved member is provided on the engine body and normally held in engagement with the contact, and it has a continuously varying radius of curvature from the central axis of the swivel shaft, so that the contact varies in operating angle while sliding along a curved outer peripheral surface of the curved member in response to steering operation. Thus, a steered angle is determined on the basis of the detection information from the angle sensor.