A mower disc includes a body having an elongated slot. A retention block includes a pocket defining a radially outer portion and a radially inner portion. The retention block includes a cover portion covering the radially outer portion of the pocket and the elongated slot. A pin passes through the elongated slot and is moveable within the elongated slot along a radially extending path between the radially outer portion and the radially inner portion of the pocket. When the pin is disposed in the radially outer portion, the cover portion of the retention block covers the pin to prevent withdrawal of the pin from the elongated slot. When the pin is disposed in the radially inner portion, the pin may be removed from the elongated slot through an access opening. A knife is positioned adjacent the lower surface of the body and is coupled to the pin.

A lawn mower includes a blade assembly configured to perform a cutting function, a deck formed with an accommodation space for accommodating at least a portion of the blade assembly, a motor configured to drive the blade assembly to rotate about a rotation axis, and a battery pack configured to power the motor. The blade assembly includes a first cutting portion configured to cut grass and a second cutting portion configured to cut grass. In the direction parallel to the rotation axis, the second cutting portion is located below the first cutting portion. The battery pack includes a battery pack housing and battery cells provided in the battery pack housing.

A working part (13) of a lawnmower (10) includes a disk (20) rotatably supported by a main body of the lawnmower and configured to be rotated by a power source (15), a blade (36) having a base end portion (46) rotatably attached to an outer peripheral part of the disk via a pivot shaft (32) and a free end portion (47) configured to protrude radially outward from an outer peripheral edge of the disk, and a blade guard (37) having a base end portion (51) rotatably supported by the pivot shaft and a free end portion (52) overlying the free end portion of the blade.

An agricultural cutting mechanism for use with an agricultural machine has a disk rotatable about an axis of rotation, a post secured to the disk, a blade, and a yieldable blade retainer. The blade is removably secured to the disk. The blade comprises a keyhole in which the post is positioned. The blade retainer is secured to the disk to move relative thereto between a blocking position blocking radially inward movement of the blade to the replacement position so as to maintain the blade in the use position and a service position releasing the blade to move radially inward to the replacement position for replacement of the blade with another blade. A blade for use with an agricultural cutting mechanism is also disclosed.

A mower is provided and includes: a housing; a movable upper cover, disposed on the housing; and a cutting assembly, disposed on the housing. The cutting assembly includes a blade carrier assembly, and the blade carrier assembly includes a blade carrier and a blade. The blade carrier includes a disc body and a blade receiving groove recessed inwardly from an edge of the disc body along an axial direction of the disc body. The blade is mounted in the blade receiving groove and arranged to be that the blade is not protruded out of the blade receiving groove in the axial direction of the disc body.

The disclosure is directed to a cutting blade for a cutter head and includes a base body having a fastening arrangement for fastening the cutting blade to a cutter head as well as a blade edge. The base body and the blade edge are made of a biodegradable natural substance. Alternatively, the base body is made of a non-biodegradable plastic and the blade edge is made at least in part of a biodegradable material.

A lawn mower in which an operating part that performs lawn mowing is equipped in a traveling machine body that travels in a field. The operating part comprises a rotary-driven bladed disk in a state of facing the field, and a cutting blade piece rockably mounted on an outer peripheral part of the bladed disk. A mounting part in which the cutting blade piece is mounted on the bladed disk comprises an axial member mounted to cross a field opposed surface of the bladed disk, and a cylindrical member which is hollow and into which the axial member is inserted with a space therebetween. The axial member is mounted on the bladed disk in a state in which the cutting blade piece is fixed to an outer periphery of the cylindrical member and the axial member is inserted into the cylindrical member.

Apparatus (10) for assisting the exchange of blades on a mowing member of a mower having a mowing disk, a blade carrier and at least one blade mounted on the blade carrier via a pin connected to the blade carrier and extends through a recess in the mowing disk, a lever device (11) having at one end an actuating handle (14) actuatable by hand, and has at a second end at least one bending-open body (15, 16), the blade carrier and the mowing disk being able to be displaced such that the pin connected to the blade carrier can be moved out of the recess, a support device (12) mounted in an articulated manner on the lever device (11) and supported on the mowing disk during a bending-open process, and at least one spring element (13) assists the bending-open process via the at least one bending-open body (15, 16).

A lawnmower with a mulch plug with a plurality ramps for deflecting lawn clippings out of a cutting deck with more than one depth planes. The mulch plug is configured to attach to the lawnmower by one or more attachment points to block a collector opening of the lawnmower. The plurality of ramps comprises a first ramp and a second ramp on the lower plane of the cutting deck extending downward from the mulch plug. The second ramp is positioned further in the cutting rotation of the lawnmower on a trailing edge of the mulch plug. The secure attachment of the mulch plug with a plurality of ramps provides a more even distribution of grass clippings.

A lawn mower includes a shaft rotated by a drive source, a blade, and a blade holder fixing the shaft and the blade. The blade holder has a holder base holding the blade, and a holder adapter holding the shaft, wherein the holder adapter includes a fragile part.