The disclosure provides a lawn mower. The lawn mower includes a cutter assembly, a housing, and a power assembly supplying power for the cutter assembly. The cutter assembly includes a first/second blade. The first blade and the second blade are staggered and arranged back and forth. The housing includes a mowing space. The mowing space includes a first/second mowing cavity communicating with each other and respectively housing the first/second blade. A width of the mowing space is greater than a width of the first/second mowing cavity, and is smaller than a sum of the widths of the first mowing cavity and the second mowing cavity. An overlapping part is provided by overlapping of cutting areas of the first and second blades. A ratio of a width of the overlapping part to the width of the mowing space is from 0.01 to 0.09.

A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

A turf maintenance apparatus having folding handles facilitating compact storage is presented herein. The folding handles can be compressed or extended to adjust overall length and can rotate between an extended operator position and a folded storage position. Depending on implementation, the folding handles can be locked in the folded storage position and can also lock in the extended operator position. An operator presence device(s) can disable operation of a motor or engine when the handles are not locked in the extended operator position.

A turf maintenance apparatus having folding handles facilitating compact storage is presented herein. The folding handles can be compressed or extended to adjust overall length and can rotate between an extended operator position and a folded storage position. Depending on implementation, the folding handles can be locked in the folded storage position and can also lock in the extended operator position. An operator presence device(s) can disable operation of a motor or engine when the handles are not locked in the extended operator position.

A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

Provided is a weed cutting blade device that can efficiently cut weeds while inhibiting stones from being caused to fly and a blade portion from being damaged. A lower plate of the weed cutting blade device has a plate-shaped outer periphery portion protruding outward from an upper plate. An outer periphery of the outer periphery portion includes an arc portion and a cutout portion shaped so as to be cut out with respect to a virtual circle which is a trajectory drawn by the arc portion as the lower plate rotates. The cutout portion is formed so as to overlap a blade portion of a rotary blade from a position on a front side with respect to the rotary blade in a rotation direction of the lower plate when viewed in a plan view.

Provided is a weed cutting blade device that can efficiently cut weeds while inhibiting stones from being caused to fly and a blade portion from being damaged. A lower plate of the weed cutting blade device has a plate-shaped outer periphery portion protruding outward from an upper plate. An outer periphery of the outer periphery portion includes an arc portion and a cutout portion shaped so as to be cut out with respect to a virtual circle which is a trajectory drawn by the arc portion as the lower plate rotates. The cutout portion is formed so as to overlap a blade portion of a rotary blade from a position on a front side with respect to the rotary blade in a rotation direction of the lower plate when viewed in a plan view.

Disclosed is a four-line nylon cutter assembly for a mower, including: an upper case having an insert groove at a central portion thereof; an elastic body in which one surface portion is in close contact with an inner surface of the central portion of the upper case; a spool having a surface on which a nylon cutter is wound and one surface which is in close contact with the other surface portion of the elastic body by pressing; an operating wheel of which one surface portion is coupled to the other surface portion of the spool; and a lower case in which a mounting groove into which the other side portion of the operating wheel is inserted is formed at the center portion and an edge portion is coupled to an edge portion of the upper case.