Abstract: The string trimmer includes a connecting rod, a string trimmer head, and an operation part. The string trimmer head includes a trimmer line, a spool, a housing, and a streamlined protection structure. The spool is configured to wind the trimmer line and is capable of rotating about a first axis. The housing has an accommodating cavity for accommodating at least part of the spool and a threading hole for the trimmer line to extend to an outer side of the housing. The protection structure includes a head, a tail and a passage through which the trimmer line penetrates. The head is connected to the housing, the tail extends on the outer side of the housing, and the passage is configured to accommodate the trimmer line penetrating through the threading hole and expose the trimmer line out of the tail of the protection structure.

Abstract: 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.

Abstract: A lawn mower includes a blade assembly configured to perform a cutting function, a deck formed with an accommodating space for accommodating at least part of the blade assembly and a power mechanism configured to drive the blade assembly to rotate about a rotation axis. The blade assembly includes a cutting blade and a chopping device. The cutting blade is configured to be driven by the power mechanism to rotate about the rotation axis, and the cutting blade includes a cutting edge. The chopping device includes a chopping body, a plurality of chopping teeth, and a plurality of branching ports provided between two adjacent ones of the plurality of chopping teeth. The chopping body is configured to be driven by the power mechanism to rotate and the chopping teeth extend upward or downward from the chopping body.

Abstract: 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.

Abstract: A blade and a lawn mower including the same is provided. The blade includes a main body, the main body includes a body portion and an assembling portion which is connected to the body portion, the assembling portion is configured for being disposed on a mowing disk of a lawn mower, the mowing disk is rotatable about an axial direction, the body portion includes two side faces opposite to each other, each said side face has a curved section and a plane section, the two side faces define a midline therebetween, and the midline and a vertical plane which is lateral to the axial direction define an angle therebetween.

Abstract: The invention provides a blade and a lawn mower. The blade comprises a flat middle portion, and two end portions respectively disposed at two opposite ends of the middle portion, wherein a cutting edge is located on the end portion, and wherein each end portion includes a first end portion and a second end portion, and wherein the second end portion is located between the middle portion and the first end portion, and wherein along the longitudinal direction of the middle portion, the ratio of the length of the first end portion to the length of the blade in a horizontal plane is between 0.045 and 0.09. The blade and the lawn mower have advantages that grass can be smashed completely by the blade to achieve an optimal grass smashing effect, the structure is simple and the cost is low.

Abstract: Trimmer heads for trimmers are provided. A trimmer head includes a drive plate defining a lug slot, and a locking lug, the locking lug movably positioned in the lug slot and movable between an unlocked position and a locked position. A trimmer head further includes a drive plate cover connectable to the drive plate such that the locking lug is disposed between the drive plate and the drive plate cover. A trimmer head farther includes at least one operational head, the at least one operational head connectable to the drive plate. The connected operational head is locked to the drive plate when the locking lug is in the locked position and the connected operational head is unlocked from the drive plate when the locking lug is in the unlocked position.

Abstract: A cutter blade for a mower includes a blade base part, a cutting part positioned further outward radially than the blade base part, a descending part formed between the blade base part and the cutting part, and a curved part formed so as to curve upward from the cutting part. The descending part and the curved part have an intersection part at which an end of the descending part in the counter-rotating direction and a radially inner end of the curved part intersect.

Abstract: A lawn mower includes a cutter blade having flaps and a flap drive mechanism. The flap drive mechanism includes a flap drive source and an intermediate power transmission unit. The intermediate power transmission unit is provided on a power transmission path between the flap drive source and the flaps and provided coaxially with a blade rotation axis. An output axis of a motor is provided coaxially with a blade rotation axis and the intermediate power transmission unit.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A trimmer head having an upper case having a fastening portion formed with an upper fastening hole for coupling the rotating shaft to a center of the upper case; a lower case formed with a lower fastening hole at its center and the lower case being coupled to the upper case; a body portion positioned in a cavity between the upper case and the lower case; and a plurality of cutting means coupled to the body portion so as to be rotatable at one end thereof, wherein the upper case and the lower case are further connected to each other by a plurality of elastic media and are spaced apart by the tension of the elastic medium when the upper case and the lower case are separated from each other.

Abstract: The present disclosure provides rotatable blades with easily replaceable cutting edges, and methods of making and using same.

Abstract: A cutting and threshing blade for a bush hog, wherein the blade has a trailing edge and a leading edge. At least a third of the leading edge of the upper-side of an elongate distal portion of the blade has a knife edge with a knife length that thickens toward the trailing edge. The trailing edge can have an upward air deflector. The bottom-side of the elongate distal portion has a threshing element, which includes a threshing block, which is a steel block having a block length that is comparable to the knife length and projects downward and substantially parallel to the knife edge. The rotating blades pummel growth carriers (i.e.; cob, husk) bearing seeds, grains, and kernels with enough force that they are released. The synergistic rotating knife edge and threshing block transform the bush hogging process from a cutting process to a cutting and threshing process.

Abstract: A lawn mower robot includes a rotating plate rotatably mounted on a bottom surface of an inner body; and a plurality of blades coupled to an edge portion of the rotating plate to be unfolded in a centrifugal direction and folded in the direction of the center of the circle, and spaced apart from each other in a circumferential direction of the rotating plate to cut grass while rotating around a rotating shaft of the rotating plate, wherein at least one of the blades has a cross-sectional shape of a parallelogram and is formed of a plate having a predetermined width in a longitudinal direction.

Abstract: A method for docking an autonomous mobile floor cleaning robot with a charging dock, the robot including a receiver coil and a structured light sensor, the charging dock including a docking bay and a transmitter coil, includes: positioning the robot in a prescribed docked position in the docking bay using the structured light sensor and by sensing a magnetic field emanating from the transmitter coil; and thereafter induction charging the robot using the receiver coil and the transmitter coil with the robot in the docked position.

Abstract: The modular leaf shredder includes a housing having a plurality of interlocking housing subsections. The modular leaf shredder further includes a trimmer connector adapted to form a physical connection with a cooperating member of a trimmer in order to physically join the housing to the trimmer. The head of the trimmer includes a rotating head having at least three sets of cutting wires, at least two sets of cutting wires being substantially perpendicular to each other. A modular leaf shredder is provided. The modular leaf shredder includes a housing having a plurality of interlocking housing subsections. The modular leaf shredder further includes a trimmer connector adapted to form a physical connection with a cooperating member of a trimmer in order to physically join the housing to the trimmer. The head of the trimmer includes a rotating head having at least three sets of cutting wires, at least two sets of cutting wires being substantially perpendicular to each other.

Abstract: A low-energy blade system having a quick-change attachment for a lawn maintenance tool. The low-energy blade system requires a reduced amount of energy to rotate the blade system. The blade system includes a shell, a mounting plate attached to the shell, a plurality of quick-attach mechanisms, and a separate cutting blade attachable to each of the quick-attach mechanisms. Each quick-attach mechanism allows a cutting blade to be attached to the mounting plate without the need for external tools, such as screwdriver, wrench, ratchet, or the like.

Abstract: A lawn care device may include a cutting deck housing at least one blade, a rotatable shaft, and a blade coupler operably coupled to the rotatable shaft. The blade coupler may define a blade channel configured to at least partially enclose four sides of a blade inserted therein. The blade coupler may include a support base and a sleeve that is movable relative to the support base based on a compression state of a biasing element. The blade may be insertable into the blade channel by orienting the blade to apply a force to sidewalls of the sleeve to shift the biasing element to a compressed state and rotating the blade proximate to the support base to enable the biasing element to shift to an extended state in which sidewalls of the sleeve define sidewalls of the blade channel.

Abstract: A mower blade assembly attaches to a rotatable spindle and includes a mounting plate which defines a first pin aperture. The mounting plate and a retaining plate are attached to the rotatable spindle. The retaining plate defines a second pin aperture. A movable pin plate comprises a pin. A blade is selectively attachable to the mounting plate. The blade defines a retaining plate aperture and a third pin aperture. A biasing member urges the movable pin plate from a disengaged position to an engaged position. The pin is engageable with the pin apertures for mounting and retaining the cutting blade to the mounting plate. The blade is attached by moving the blade over the retaining plate aperture, urging the movable pin plate to the disengaged position, rotating the blade, and releasing the movable pin plate. Another embodiment includes a force finger.

Abstract: A lawn mower includes a housing having an opened bottom, a drive source for driving the cutter blade in the housing, a flap provided for the cutter blade in a manner that the flap has a changeable flap angle, a grass clippings container storing cut lawn grass, a grass clippings container weight detection unit for detecting weight of the grass clippings container, and a control unit. The control unit controls at least one of the rotational speed of the drive source and the flap angle of the flap in correspondence with the weight detected by the grass clippings container weight detection unit.

Abstract: A lawn mower includes a drive source for driving a cutter blade, flaps, a grass clippings container, a grass clippings container weight detection unit, a travel distance detection unit, and a control unit. The control unit determines a change amount of weight of the grass clippings container detected by the grass clippings container weight detection unit over the elapsed time period from the time when detection of travel distance of the lawn mower is started by the travel distance detection unit to the time when travel of predetermined distance is completed, and implements control in a manner that the rotation speed of the drive source and the flap angle of the flaps are adjusted in accordance with the change amount of the weight.

Abstract: A blade for a mower disc body is provided. The blade defines a central axis of rotation. The blade includes a blade body. The blade body is of a first hardness. The blade body has opposed top and bottom surfaces. An outer surface extends around the blade body vertically between the top and bottom surfaces. The blade body comprises first and second apertures or retainer structures in spaced apart relation. A cutting edge extends along an outer surface of the blade.

Abstract: A quick connect mower blade system includes a blade bolt inserted into the top end of a hollow spindle and threaded into a collet having an upright inserted into the lower end of the spindle. The collet has a head that is aligned substantially perpendicular to a hole in a blade holder if the blade bolt is tightened onto the collet to clamp a mower blade between the spindle and blade holder.

Abstract: A weed trimmer extension device for cutting and collecting, or dispersing weeds includes a cutting enclosure, to which can be attached a collecting bag or a cutting disperser; a replacement cutting implement; and enclosure fasteners, for attaching the weed trimmer extension device to a weed trimmer. The cutting implement can further include a cutting blade and a perpendicular fin, which pushes air in a circular direction of motion, thereby creating a vortex of air, which rotates in the plane spanned out by the rotating cutting blade. The cutting enclosure covers the replacement cutting implement, which propels the cuttings, contained and directed by the cutting enclosure, into either the collecting bag or the cutting disperser, which disperses the weed cuttings over an area to the side.

Abstract: A lawn mower includes: a blade disk rotatable about a rotation shaft extending in an up-down direction; and a plurality of cutter blades mounted on the blade disk. The blade disk includes a plurality of blade mounting sections having corresponding ones of the cutter blades mounted thereon, and a circumferential high-rigidity section for increasing rigidity of the blade disk between the blade mounting sections. The blade mounting sections are located on, and spaced from each other along, an imaginary reference circle concentric with a rotation center of the blade disk, and the circumferential high-rigidity section is located in such a manner as to interconnect the plurality of blade mounting sections along the reference circle, the circumferential high-rigidity section being formed in a generally concave-convex configuration by being depressed and protruded in a facewise direction of the blade disk.

Abstract: A blade disk in a lawn mower is rotatable about a rotation shaft extending in an up-down direction. A blade protection section for protecting a cutter blade mounted on the blade disk is provided integrally on the blade disk, and the cutter blade has a distal end portion located beneath the blade protection section.

Abstract: A quick attach rotary mower blade system includes a blade holder secured to a mower spindle with a shoulder bolt, a pair of upwardly extending protrusions on the blade holder, and a spring biased plunger extending downwardly from the blade holder. A rotary mower blade has a center hole that slides over the shoulder bolt, compresses the spring biased plunger, and rotates over the protrusions to an engaged position.

Abstract: A lawn care device may include a cutting deck housing at least one blade, a rotatable shaft, and a blade mount operably coupled to the rotatable shaft. The blade mount may include at least one engagement slot configured to enclose at least a portion of the at least one blade. The blade mount may further include at least one protruding member disposed within the engagement slot to secure the at least one blade within the engagement slot responsive to insertion of the at least one blade into the engagement slot.

Abstract: A lawn care device may include a cutting deck housing at least one blade, a rotatable shaft, and a blade mount operably coupled to the rotatable shaft. The blade mount may include a clasp to secure the at least one blade within an engagement slot of the blade mount. The cover assembly may form a cavity with at least one sidewall extending substantially around a periphery of the blade mount.

Abstract: A weed trimmer apparatus having a head defining at least one side wall, the side wall forming one or more apertures therethrough, and one or more line retention members for retaining one or more trimmer lines. The line retention members are operatively connected to the head, wherein each line retention member is sized and configured to extend through a loop of at least one trimmer line during operation of the weed trimmer apparatus and wherein each line retention member is dynamically connected to the head to allow for installation and removal of the loop of trimmer line.

Abstract: A quick-release knife connector for use on a rotary disc cutterhead having an asymmetrically shaped knife nut with a first portion providing a bearing surface for an aperture in the knife and a second portion which inhibits axial movement of the knife from contact with the first portion. A capture spring having an aperture for partially receiving the second portion prevents accidental release of the knife. The asymmetric orientation of the second portion and placement of the aperture on the capture spring assures that the knife nut is properly oriented when installed.

Abstract: A blade rotor includes a mower disk, at least one mowing blade, at least one bearing pin mounted on the mower disk for pivotable mounting of the mowing blade, and a spring plate arranged on the mower disk for retaining the mowing blade on the bearing pin. In order to facilitate maintenance work when replacing the bearing pin, the invention proposes to provide a mounting hole in or on the mower disk, into which mounting hole the bearing pin can be screwed from a side of the mower disk facing away from the spring plate, wherein a threaded region and a retaining region are formed on the bearing pin, and the retaining region can be introduced through the mounting hole and brought into engagement with the spring plate when the bearing pin is screwed in.

Abstract: A lawn mower includes: a rotation shaft extending vertically in a downwardly-opening housing; and a cutter blade rotatably mounted on the rotation shaft. The cutter blade is an elongated member extending in opposite horizontal directions and having two bent sections formed on respective ones of its longitudinally opposite end portions. The two bent sections are bent in opposite directions as viewed in the axial direction of the rotation shaft. The cutter blade has, on each of the bent sections, a convex cutter blade section formed along a convex edge of the bent section and a concave cutter blade section formed along a concave edge of the bent section. The convex cutter blade section on each of the bent sections has a smaller cutting edge angle than the concave cutter blade section.

Abstract: A reaping machine includes a sickle bar that can rotate and at least one reaping blade arranged on the sickle bar. The reaping blade is supported so that it can pivot on a pin fastened to the sickle bar. The pin has a fastening section for fastening to the sickle bar and a holding section separated by a shoulder from the fastening section for holding the reaping blade so that it can pivot. To simplify the placement or installation of the pin on the sickle bar, at least one raised section extending in the radial direction past a circumferential segment of the pin is formed in the fastening section of the pin.

Abstract: A replaceable mower blade for attachment to a mounting member operatively connected to a mower is provided. The blade includes a central portion having opposing side edges, a top surface, and a bottom surface. The blade also includes a tip portion extending from the central portion. The central portion includes at least one attachment mechanism for operatively connecting the blade to the mounting member.

Abstract: A replaceable mower blade assembly for attaching to a rotatable spindle, motor, or engine crankshaft is provided. The blade assembly includes a mounting member having a plurality of ends extending from a central bore that is configured to receive the spindle, motor, or engine crankshaft. Each end includes an indexing aperture and a plurality of caps. A locking mechanism is operatively connected to the mounting member, and each arm of the locking mechanism includes a pin. A cutting blade is removably attachable to each end of the mounting member and the cutting blade includes an indexing aperture and a plurality of keyhole apertures. Each pin of the locking mechanism is insertable and engageable with an indexing aperture of both the mounting member and the cutting blade for positively securing each cutting blade.

Abstract: A cutter blade for a mower is driven to rotate about a vertical axis inside a housing. The cutter blade includes a blade body, a blade portion formed in the blade body and a wind generating portion formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portion being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof. At an outer end portion of the wind generating portion in the longitudinal direction of the blade body, there is formed at least one recessed portion recessed more inwards than the remaining portion of the outer end portion.

Abstract: An apparatus and method is provided for removing a retained member from a rotary head assembly configured for attachment to a rotary power source.

Abstract: A lawn care device may include a cutting deck housing at least one blade, a rotatable shaft, and a blade mount operably coupled to the rotatable shaft. The blade mount may include at least one engagement slot configured to enclose at least a portion of the at least one blade. The blade mount may further include at least one protruding member disposed within the engagement slot to secure the at least one blade within the engagement slot responsive to insertion of the at least one blade into the engagement slot.

Abstract: A replaceable blade assembly includes an arm that may be coupled to a lawn mower. A blade is removably coupled to the arm so the blade may be moved by the arm. A clip is removably coupled to the arm so the clip may retain the blade on the arm.

Abstract: A rotary implement includes a metallic body that is rotatable around an axis. The metallic body includes a tapered leading edge having an interface surface and an opposite, free surface. The metallic body has a first composition. A metallic layer has a first side surface that is attached to the interface surface and a free, second side surface opposite from the first side surface. The metallic layer has a second, different composition from the first composition. A rotary machine can include an actuator and the rotary implement operably coupled to the actuator. A method for making a rotary implement includes providing the metallic body that has the tapered leading edge having the interface surface and the opposite, free surface. The metallic layer is then attached to the interface surface of the metallic body.

Abstract: A stalk reducer bar and an assembly that supports, transports, and rotatably drives a stalk reducer bar in typical environments in which an area of vegetation is to be trimmed are provided. The stalk reducer bar reduces the size of cut stalk segments such as grass stalks segments generated during a lawn mowing operation and includes a carrier body. The carrier body includes a further working portion having a plurality of projections and angular movement of the carrier body in the cutting plane operates to bring the first blade section into stalk cutting engagement with stalks extending from the surface supporting organic matter thereon and operates to bring the plurality of projections of the further working portion into shredding engagement with cut stalks.

Abstract: A replaceable mower blade for attachment to a mounting member operatively connected to a mower is provided. The blade includes a central portion having opposing side edges, a top surface, and a bottom surface. The blade also includes a tip portion extending from the central portion. The central portion includes at least one attachment mechanism for operatively connecting the blade to the mounting member.

Abstract: A replaceable mower blade assembly for attaching to a rotatable spindle, motor, or engine crankshaft is provided. The blade assembly includes a mounting member having a plurality of ends extending from a central bore that is configured to receive the spindle, motor, or engine crankshaft. Each end includes an indexing aperture and a plurality of caps. A locking mechanism is operatively connected to the mounting member, and each arm of the locking mechanism includes a pin. A cutting blade is removably attachable to each end of the mounting member and the cutting blade includes an indexing aperture and a plurality of keyhole apertures. Each pin of the locking mechanism is insertable and engageable with an indexing aperture of both the mounting member and the cutting blade for positively securing each cutting blade.

Abstract: A trimmer head for use with a plurality of lengths of flexible cutting line in a flexible line rotary trimmer having a plurality of line holders rotatably mounted thereon. Each line holder defines a pair of laterally spaced apertures in an upper surface thereof, a passageway extending longitudinally therethrough, terminating in an extended end thereof and communicating with the laterally spaced apertures. An interior guide surface extends along a curvilinear path from the spaced apertures to the passageway and a web extends between the apertures whereby end portions of lengths of cutting line can be extended into and through the spaced openings, along the guide surfaces into and through the passageway and outwardly therefrom, whereupon lengths of line extend about and are held against the web with portions of the line projecting from the passageways in the line holders for the cutting of vegetation.

Abstract: A lawn care device may include a cutting deck housing at least one blade, a rotatable shaft, and a blade mount operably coupled to the rotatable shaft. The blade mount may include at least one engagement slot configured to enclose at least a portion of the at least one blade. The blade mount may further include at least one protruding member disposed within the engagement slot to secure the at least one blade within the engagement slot responsive to insertion of the at least one blade into the engagement slot.

Abstract: A replaceable mower blade for attachment to a mounting member operatively connected to a mower is provided. The blade includes a central portion having opposing side edges, a top surface, and a bottom surface. The blade also includes a tip portion extending from the central portion. The central portion includes at least one attachment mechanism for operatively connecting the blade to the mounting member.

Abstract: A replaceable mower blade assembly for attaching to a rotatable spindle, motor, or engine crankshaft is provided. The blade assembly includes a mounting member having a plurality of ends extending from a central bore that is configured to receive the spindle, motor, or engine crankshaft. Each end includes an indexing aperture and a plurality of caps. A locking mechanism is operatively connected to the mounting member, and each arm of the locking mechanism includes a pin. A cutting blade is removably attachable to each end of the mounting member and the cutting blade includes an indexing aperture and a plurality of keyhole apertures. Each pin of the locking mechanism is insertable and engageable with an indexing aperture of both the mounting member and the cutting blade for positively securing each cutting blade.