Abstract: A rotary coupling head for use with a portable cutting device has a blade-supporting housing, an axial motor drive shaft connected to the blade-supporting housing so as to be rotatable with the blade-supporting housing, an interchangeable cutting blade mounted on the blade-supporting housing so as to rotate with the rotation of the blade-supporting housing. The cutting blade is engaged around the drive shaft such that the cutting blade and the housing are axially displaceable along the drive shaft. A coupler on the housing is automatically actuated upon the axial displacement of the cutting blade and the housing on the drive shaft.

Abstract: A rotary cutting head adapted to allow a flexible strand of cutting wire to be inserted therein has a coupler for coupling the cutting head to a driveshaft of the motor, a support, and a clamping mechanism supported by the support in the rotary cutting head. The clamping mechanism is adapted to clamp the strand within the exterior housing. The clamping mechanism includes squeezing cams mounted so as to pivot in parallel planes therebetween and relative to the rotation axis of the cutting head. The support is axially translatable in the exterior housing. An application of actual movement in a direction opposite to the housing and the support causes a raising of the squeezing cams or a lowering of the squeezing cams.

Abstract: An automatic-feed trimmer head for a vegetation trimming machine. A spool is positioned within the interior of a housing. A cam guide formation is disposed atop the top flange of the spool. The cam guide formation defines a pathway. A cam arm is provided that is mounted to the housing with a pivot connection. The cam arm has a cam projection that extends into the pathway. A spring is provided that biases the cam arm into a first orientation. In the first orientation, the shape of the pathway enables the cam projection to move only in a first direction. The cam arm moves about the pivot connection from its first orientation to a second orientation when the trimmer head assembly is rotated above a predetermined rotational speed. When the cam arm is in its second orientation trimmer line is unwound from the spool.

Abstract: A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.

Abstract: An electric grasscutter includes a motor (50) which drives a rotary blade (42). The motor (50) is a brushless motor accommodated in a motor housing (51) and including a rotor (53) provided integrally with an output shaft (52), and a stator (54) fixed to the motor housing (51). A motor control circuit which drives the motor (50) is accommodated in the motor housing (51). The motor control circuit includes an inverter having FETs (81-86) as switching elements, and a control section to control the FETs (81-86). The FETs (81-86) are fixed in contact with the motor housing (51).

Abstract: A work apparatus includes a drive motor, a tool head including a tool frame, a bearing, a tool shaft and a rotary tool, a frame tube with the proximal end connected to the drive motor and the distal end connected to the tool head, and a drive shaft rotatably inserted through the frame tube for transmitting the rotation of the drive motor to the rotary tool. The rotary tool is accommodated within the tool frame and is rotatable on the tool shaft, when driven by the drive shaft. The tool shaft is journaled by the bearing which is elastically supported by a flexible elastic member disposed coaxially around the bearing and interposed between the bearing and the connection of the tool frame or the frame tube. Undesirable vibrations caused by the rotation of the rotary tool will be effectively hindered from being transmitted to the frame tube.

Abstract: A rotary cutter for a brush cutter includes a head main body having a cord guide hole and a pressure member having a cord inserting guide hole formed to radially penetrate through the pressure member. The pressure member is operable between a first state in which the cord inserting guide hole of the pressure member is aligned with the cord guide hole of the head main body so that a cutting cord is insertable into the head main body; a second state in which the pressure member is pushed inwardly of the head main body from the first state; and a third state in which the pressure member is rotated with respect to the head main body from the second state so that the inserted cutting cord is made into a bent state.

Abstract: An adverse terrain vegetation cutting apparatus articulates to conform to adverse surface conditions. Upon detecting instability the apparatus may automatically rotate to a more stable position. The apparatus includes a spiral flail line storage head.

Abstract: A power operated rotary knife having a reusable handle assembly and disposable blade support assembly including a head portion and a blade support portion extending from the head portion, wherein upon completion of a tissue debriding operation on a donor, the used blade support assembly is removed from the handle assembly and disposed of, the handle assembly is autoclaved/sterilized and a new, sterilized blade support assembly is affixed to the handle assembly prior to a subsequent use. The knife includes an attachment assembly to releasably attach the disposable blade support assembly to the handle assembly and a retainer structure positioned in an annular groove formed in a bottom surface of the blade housing portion, the retainer structure bearing against an annular rotary knife blade and the blade housing portion to permanently retain an annular body section of the blade in the annular groove.

Abstract: A cutting head for a string trimmer, the cutting head being rotationally driven through a drive shaft, the cutting head comprising a bowl; a trimmer string secured to the bowl; and a blade attached to the outer circumference of the bowl.

Abstract: A support pole has upper, lower and intermediate extents. A motor with a drive shaft is coupled to the lower extent of the support pole. A grinding component is coupled to the drive shaft. The grinding component includes an annular plate below, a cylindrical sleeve above and a hemispherical dome there between. The sleeve is adapted to receive the drive shaft. The annular plate has a downwardly facing abrasive surface. The dome ventilation apertures. A bushing is coupled to the drive shaft for axial securement of the dome and abrasive surface to the motor.

Abstract: A bush cutter is provided with a main pole, a cutting blade disposed at an anterior end of the main pole, a prime mover disposed at a posterior end of the main pole and configured to drive the cutting blade, and a handle disposed at an intermediate portion of the main pole and provided with a grip that is configured to be grasped by a user. The grip is provided with a driving switch for driving the cutting blade and an adjusting switch for adjusting at least one of a rotation speed and a rotation direction of the cutting blade. The driving switch and the adjusting switch are arranged so as to enable the user who grasps the grip to operate the driving switch and the adjusting switch with a hand grasping the grip without releasing the hand from the grip.

Abstract: An oscillating power tool includes a drive motor producing rotary motion and an actuator for converting the motor rotary motion to an oscillatory side-to-side movement. The power tool includes a tool mount operably driven by the actuator and configured to support the tool so that the working end is substantially collinear and/or coplanar with the axis of the motor drive shaft.

Abstract: A trimmer head in which a cutting line can be loaded to a spool includes a housing connectable to a driving shaft. A line outlet is disposed in the housing and the spool is connected to the housing. In a line winding mode, the spool includes a position where an end of a line leading channel is aligned with the line outlet and a cutting line may enter the line leading channel and will be in clearance fit with the line leading channel. When the spool is rotated with respect to the housing, a portion of the cutting line in the line leading channel is pressed tightly therein, and the portion of the cutting line extending from the line leading channel can be pulled toward the spool.

Abstract: An integrated string and trimmer blade system that allows a user to simultaneously employ one or more flexible lines and one or more blades during various types of cutting operations (e.g., grass, weeds, branches, etc.). The system may be implemented on any appropriate cutting apparatus such as walk-behind trimmers and/or mowers, hand-held trimmers, and the like. Broadly, the system includes a cutting member having a body that is rotatable about a pivot axis of the cutting apparatus. One or more cutting blades are pivotally attached to the body such that the blades can oscillate or otherwise pivot relative to the body as the body rotates about the central axis. At least one of the blades includes one or more line holders thereon for receipt and attachment of one or more flexible cutting lines or strings.

Abstract: The weed trimmer head is comprised of a sole plate having a diameter; a circumference; a plurality of pivot pins extending upwardly therefrom near the circumference. The sole plate also has a driving shaft extending upwardly therefrom from a center thereof. The driving shaft has a threaded segment thereon. A plurality of cutting blades are pivotally mounted to the plurality of pivot pins. A wingnut plate is also provided. This wingnut plate has a disc-like portion and wing blades extending on an upper side thereof. The wingnut plate has a threaded hole in its disc-like portion. The threaded hole is mounted to the threaded segment of the driving shaft and the wingnut plate is movable along the threaded segment, for selectively contacting or exposing the ends of the pivot pins.

Abstract: Head for hedge trimmer comprising an external casing (2, 102) having an axis of rotation (X) and equipped with at least one lateral exit hole (4, 104) for a cutting wire (F), the external casing (2, 102) internally having a seating for the storage of a part of the cutting wire (F) so that an end portion (E) of the wire (F) exits from the casing (2, 102) through a lateral hole (4, 104). The head (1, 101) comprises, within the seating, a pair of presser discs (5, 6, 105, 106) facing each other and defining between them an annular shaped housing (7, 107) to contain said part of the cutting wire (F), the presser elements (5, 6, 106, 106) being movable towards each other along said axis of rotation (X) for compressing between them the part of the cutting wire (F) stored between them.

Abstract: Handle configurations are disclosed for powered implements having a shaft, allowing the implements to be holdable by both hands of a user. An exemplary implement has an elongated shaft having first and second end portions. A first handhold is adjustably mounted to the shaft and extends outwardly therefrom. A second handhold is adjustably mounted either to the shaft or to an elongated member coupled to the shaft. The elongated member can include a mounting portion and a handle portion providing the second handhold. The mounting portion mounts to the first end portion at a mounting location. The first and second handholds allow operation of the implement by a user with arms in respective neutral arm positions and hands in respective neutral gripping positions. The elongated member allows transmission of a force applied to the second handhold by the user through the elongated member and to the elongated shaft at the mounting location.

Abstract: A trimmer head assembly and the method of configuring the trimmer head assembly. The trimmer head assembly has a housing that attaches to a string trimmer machine. A spool is provided inside the housing. The spool rotates about an axis of rotation. The spool can move longitudinally along the axis of rotation between a first position and a second position. A ratcheting mechanism is provided between the trimmer head housing and the spool. When the spool is in its first position, the ratcheting mechanism enables the spool to continuously rotate about the axis of rotation in the direction opposite that in which the trimmer head assembly spins. The ratchet mechanism also prevents the spool from rotating within the housing in the same direction in which the trimmer head is spinning.

Abstract: An aerodynamic trimmer head for use in flexible line rotary trimmers having a plurality of aerodynamic elements defined by the upper and lower head surfaces that during rotation of the head, draw air downwardly about the trimmer drive mechanism onto the upper head surface and move the air outwardly from the head into the plane of the extended cutting line and at forward inclination in the direction of rotation. The downwardly moving air cools the trimmer drive mechanism and the outwardly and forwardly moving air reduces the drag on the head and the extended cutting line. The aerodynamic elements preferably include a plurality of troughs extending downwardly and forwardly along the upper head surface, a perimeter surface for deflecting air moved by the troughs into a generally horizontally extended zone of moving air about the extended cutting line and a plurality of dimples formed in a lower surface of the head.

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: According to one embodiment, there is provided an anti-vibration structure for an operation lever of a portable brush cutter, in which a lever device includes: a main body through which a pole is inserted in an axial direction, the main body including protrusions protruding from both ends in the axial direction; support members provided on the pole to support the both ends of the main body such that the main body is separated from the pole, each support member including a recess; and anti-vibration materials accommodated in the recesses of the support members so as to be sandwiched between the support members and the main body in the axial direction, respectively, each anti-vibration material including a groove to which a respective one of the protrusions of the main body is inserted.

Abstract: A power operated rotary knife (100) including: an annular rotary knife blade (300) including a knife blade bearing surface (319); a blade housing (400) defining a blade housing bearing surface (459); and a blade-blade housing bearing structure (500) disposed between the knife blade bearing surface (319) and the blade housing bearing surface (459). The blade-blade housing bearing structure (500) includes a rolling bearing strip (502) having a plurality of rolling bearings (506), such as ball bearings, disposed in spaced apart relation in a flexible separator cage (508). The rolling bearing strip (502) traverses through an annular passageway (504) defined between the knife blade bearing surface (319) and the blade housing bearing surface (459) to secure the knife blade (300) to the blade housing (400) and support the knife blade for rotation about a central axis (R) with respect to the blade housing (400).

Abstract: An outdoor power equipment unit such as a string trimmer, and an electric motor support structure for use with the same. The structure may form a cage that surrounds the motor and secures the motor in place relative to an outermost shell of a motor housing of the string trimmer. The cage may electrically and/or thermally insulate the outermost shell from the motor.

Abstract: A cutting element for a hedge trimmer, comprising: a cutting portion (2); an attaching portion (3), associated to the cutting portion (2) and predisposed to enable attachment of the cutting element to a rotating head (10) of a hedge-trimmer; the attaching portion (3) is hook-shaped and comprises an eyelet (31) on which a housing seating (32) is afforded for an attaching pin (12) solidly constrained to the rotating head (10), the housing seating (32) is provided with an opening (33) a maximum width of which is smaller than a diameter of the attaching pin (12); elastic means are predisposed to enable the opening (33) of the housing seating (32) to broaden up to taking on a width which is at least equal to the diameter of the attaching pin (12).

Abstract: An aerodynamic trimmer head assembly for use in flexible line rotary trimmers including a trimmer head having a curvilinear upper head surface and a shroud having a curvilinear portion extending over the head surface. A plurality of ribs extend downwardly and forwardly in the direction of rotation between the head surface and shroud defining a plurality of channels extending between portions of the upper head surface and shroud along curvilinear paths defined by the ribs. The channels define inlet openings in an upper portion of the shroud and outlet openings about the lower end portion thereof. During rotation of the head and shroud, air is drawn downwardly about the drive mechanism, through the channel inlets, into and through the channels and outwardly therefrom at a forward inclination about the line projecting from the housing thereby cooling the drive mechanism of the rotary trimmer and reducing aerodynamic drag on the line.

Abstract: A weed cutter with vacuum that includes a removable cover, a cylindrical chamber attachable to the cover, an intake column fastened endwise to the chamber opposite the cover, with a vacuum impeller disposed within the chamber, a motor disposed distally within the intake column, which motor engages a cutting blade pivotally mounted at a distal end of the intake column, wherein debris created at the cutting blade is drawn into the cylindrical chamber and captured in a filter column disposed therein.

Abstract: An aerodynamic trimmer head for use in flexible line rotary trimmers having a plurality of aerodynamic elements defined by the upper and lower head surfaces that during rotation of the head, draw air downwardly about the trimmer drive mechanism onto the upper head surface and move the air outwardly from the head into the plane of the extended cutting line and at forward inclination in the direction of rotation. The downwardly moving air cools the trimmer drive mechanism and the outwardly and forwardly moving air reduces the drag on the head and the extended cutting line. The aerodynamic elements preferably include a plurality of troughs extending downwardly and forwardly along the upper head surface, a perimeter surface for deflecting air moved by the troughs into a generally horizontally extended zone of moving air about the extended cutting line and a plurality of dimples formed in a lower surface of the head.

Abstract: A bidirectional trimmer head assembly and the method of configuring the trimmer head assembly. The trimmer head assembly has a housing that attaches to a string trimmer machine. A spool is provided inside the housing. The spool rotates about an axis of rotation. The spool can move longitudinally along the axis of rotation between a first position and a second position. A ratcheting mechanism is provided between the trimmer head housing and the spool. When the spool is in one position, the ratcheting mechanism enables the spool to continuously rotate about the axis of rotation in the direction of or in the direction opposite that in which the trimmer head assembly spins to allow the spool to be fed out or dispensed regardless of the direction of rotation of the trimmer housing. The ratchet mechanism in a second postion prevents the spool from rotating relative to the housing.

Abstract: A cutting head for use with a cutting tool, such as a grass trimmer. The cutting head has a housing, a line spool and a supporting cap. One end of the housing is coupled to an end of a motor output shaft and another end has an opening. A line spool is disposed in the housing and rotates along with the housing. At least one end of a line wound around the line spool extends out of the housing. The supporting cap is rotatably disposed at the end of the line spool adjacent to the opening and is exposed to an exterior of the housing through the opening.

Abstract: A vegetation cutter comprises: a frame rod having a longitudinal axis and a front end; a rotary cutter mounted on the front end of the frame rod; a drive motor for driving the rotary cutter; a grip disposed around the frame rod and having an external surface to be held by a user; a power switch trigger arranged on the grip for energizing the drive motor; and a safety lock mechanism for rendering the power switch trigger inoperative when the safety lock mechanism is in a lock position and for rendering the power switch trigger operative when the safety lock mechanism is in a release position. The safety lock mechanism includes a manipulating knob for selectively setting the safety lock mechanism in the lock position and in the release position.

Abstract: A rotary knife includes a handle, a rotatable annular blade, and a blade carrier assembly. The blade carrier assembly includes an expandable blade housing operably coupled to the handle and configured to removably support the blade. The blade housing is movable relative to the handle between a blade-securing condition, in which the blade housing securely supports the blade for rotational operation, and a relatively expanded blade-releasing condition, in which the blade housing permits removal and installation of the blade relative to the blade housing. The carrier assembly includes a lever mechanism shiftably mounted relative to the handle and configured when shifted to expand the blade housing from the blade-securing condition to the blade-releasing condition.

Abstract: A vegetation cutting device comprises: a rotating cutting head and having a cutting line, the cutting line arranged to define a swath for cutting vegetation. A cutting line feeding mechanism comprises a counterweight for balancing a free end of the cutting line protruding from the cutting head, the counterweight being configured to actuate the cutting line feeding mechanism and feed more cutting line when the length of free end the cutting line is shorter than or equal to a feed length. A guide wheel is mounted on the vegetation cutting device and has an outer surface for engaging the ground. The guide wheel is moveable between a retracted position and an extended position wherein when the guide wheel is in the retracted position, the feed length is substantially equal to a distance between the outer surface of the guide wheel engaging the ground and the cutting head.

Abstract: A rotatable cutting head for a vegetation cutting device comprises: a rotatable spool having a cutting line wound thereon, a free end of the cutting line being arranged to exit the cutting head via an opening. A cap comprises a feeding mechanism, the feeding mechanism comprising a peg for engaging with the spool and configured to allow the spool to rotate relative to the cutting head and feed cutting line from the spool when the free end is short than a predetermined length. A moveable locking mechanism is configured to move between a locking position in which the locking mechanism engages the cutting line feeding mechanism and limits relative movement between the cutting head and the spool land a release position in which the locking mechanism does not engage the cutting line feeding mechanism; The cutting head comprises a spool comprising: a central portion for receiving the cutting line wound thereon; a flange connected at one end of the central portion.

Abstract: A spool accessory for a rotatable cutting head of a vegetation cutting device comprises: a spool configured to receive a cutting line wound thereon; and a spool sleeve mounted to the spool, the sleeve comprising a gripping arm moveable between a gripping position wherein the gripping arm grips the cutting line wound on the spool and a release position wherein the gripping arm does not engage the cutting line wound on the spool, wherein the gripping arm is configured to move from the gripping position to the release position when the cutting head rotates.

Abstract: An edge-trimmer comprises a holdable support arm (2), a cutting head (3) rotatable about a rotation axis thereof (C) and positioned in proximity of an end (2b) of the support arm (2); a motor for moving the cutting head (3) by means of a transmission organ (5), an orientation device (6) of the cutting head (3) in the space connected to the support arm (2) and rotatable about a first rotation axis (A). The orientation device (6) exhibits a rotatable junction (7) which enables the cutting head (3) to further rotate about a second rotation axis (B) which is inclined with respect to the first rotation axis (A).

Abstract: The invention is essentially a quick-change blade carrier for a blade mounted to a rotary drive shaft (such as on a mower) has an internally threaded bore. The carrier includes a housing linked by its cap to the rotary drive shaft, and enclosing a blade-locking member having a blade-locking tip downstanding from its underside; the device also includes a locking means (such as a compression spring) to bias the blade-locking member (and tip) downward through a center hole in the blade held within a channel in the bottom of the housing.

Abstract: A trimmer head assembly for use on a vegetation cutting machine. The trimmer head assembly has a housing. The housing has a top surface, bottom surface, and at least two recessed areas there between. Pivot posts are disposed within each of the recessed areas. An anchor disc is disposed around each pivot post. The anchor disc is free to rotate around the pivot post within a range. Each anchor disc has two trimmer line channels extending through it. The two trimmer line channels are joined by an open edge groove that runs along one edge. A length of trimmer line is provided for each anchor disc. Each length of trimmer line has a first end that extends through the first of the trimmer line channels, a second end that extends through the second of the trimmer line channels and a bend that seats in the open edge groove.

Abstract: A power operated rotary knife (100) including: an annular rotary knife blade (300) including a knife blade bearing surface (319); a blade housing (400) defining a blade housing bearing surface (459); and a blade-blade housing bearing structure (500) disposed between the knife blade bearing surface (319) and the blade housing bearing surface (459). The blade-blade housing bearing structure (500) includes a rolling bearing strip (502) having a plurality of rolling bearings (506), such as ball bearings, disposed in spaced apart relation in a flexible separator cage (508). The rolling bearing strip (502) traverses through an annular passageway (504) defined between the knife blade bearing surface (319) and the blade housing bearing surface (459) to secure the knife blade (300) to the blade housing (400) and support the knife blade for rotation about a central axis (R) with respect to the blade housing (400).

Abstract: A grass cutter blade of the present invention inclines: a connection part for connection to a grass cutter; and a peripheral part extending from the connection part as a center and having an outer periphery that is inclined downwardly. The peripheral part is provided with a plurality of cutouts, each of which has an opening at the outer periphery. The peripheral part includes a region located further away from a rotation axis of the blade than an edge portion of each of the plurality of cutouts. There exist, in the edge portion, a first and a second end sections which extend to a deepest section, the first and second end sections pass through respective regions during rotation of the blade, and a distance exists between the respective regions in a direction orthogonal to the rotation axis with respect to a predetermined range in an up-and-down direction.

Abstract: A power operated rotary knife (100) and method of operation includes an annular rotary blade (380). The knife further comprises a head assembly (300) extending from a handle assembly (200), the head assembly for rotatably supporting the annular rotary blade. The knife also includes a drive mechanism (600) disposed within the head assembly comprising a pinion gear (604) and a pinion shaft (970) rotatably disposed within a bushing (610), the drive mechanism being operatively coupled to the annular rotary blade, rotating the annular blade during use. A movable lubrication assembly (900) supported along a frame body between the handle assembly and the annular rotary blade, the rotatable lubrication assembly being rotatably disposed about a longitudinal axis of the handle assembly and providing a lubrication path (1000) extending from a lubrication adapter (924) to the pinion gear (604).

Abstract: A power operated rotary knife (100) including: an annular rotary knife blade (300) including a knife blade bearing surface (319); a blade housing (400) defining a blade housing bearing surface (459); and a blade-blade housing bearing structure (500) disposed between the knife blade bearing surface (319) and the blade housing bearing surface (459). The blade-blade housing bearing structure (500) includes a rolling bearing strip (502) having a plurality of rolling bearings (506), such as ball bearings, disposed in spaced apart relation in a flexible separator cage (508). The rolling bearing strip (502) traverses through an annular passageway (504) defined between the knife blade bearing surface (319) and the blade housing bearing surface (459) to secure the knife blade (300) to the blade housing (400) and support the knife blade for rotation about a central axis (R) with respect to the blade housing (400).

Abstract: A power cutter includes a housing, a first return pulley borne in a rotating manner in the housing and driven directly by a motor arranged in the housing, a cutting arm connected to the housing has a housing in which a second return pulley is arranged in a rotating manner, and is driven by a tension means guided over the first return pulley and the second return pulley, as well as a cutting tool which can be detachably fastened to the cutting arm, and a method of changing the position of a cutting tool of a power cutter, through which handling during changing the position of the cutting tool can be simplified. For the detachable fastening of the cutting tool, the cutting tool is borne on a shaft, whereby the shaft can be detachable fastened to two opposite sides of the second return pulley.

Abstract: A power operated rotary knife (100) including: an annular rotary knife blade (300) including a knife blade bearing surface (319); a blade housing (400) defining a blade housing bearing surface (459); and a blade-blade housing bearing structure (500) disposed between the knife blade bearing surface (319) and the blade housing bearing surface (459). The blade-blade housing bearing structure (500) includes a rolling bearing strip (502) having a plurality of rolling bearings (506), such as ball bearings, disposed in spaced apart relation in a flexible separator cage (508). The rolling bearing strip (502) traverses through an annular passageway (504) defined between the knife blade bearing surface (319) and the blade housing bearing surface (459) to secure the knife blade (300) to the blade housing (400) and support the knife blade for rotation about a central axis (R) with respect to the blade housing (400).

Abstract: A hand held battery powered cutting tool is provided. The tool the (1) comprises a handle portion (30), a cutting assembly (10) which cutting assembly comprises a cutting means carrier (12) arranged to rotate therewith a cutting means (13) about a first axis (A1) of rotation, and an electric motor (11) arranged to rotate an output shaft about a second axis (A2) of rotation. The tool furthermore comprises an elongate rod (20) interconnecting the handle portion (30) and the cutting assembly (10). The elongate rod (20) has a lower end portion (21) arranged proximal to the cutting assembly (10). The lower end portion has an extension direction essentially coinciding with the first axis (A1) of rotation. The second axis (A2) of rotation is located behind the first axis (A1) of rotation when the tool (1) is in a working position.

Abstract: A hand-held vegetation trimmer includes a shaft, a cutting blade disposed at a first end portion of the shaft, a first handle disposed at a second end portion of the shaft, and a motor in communication with the cutting blade. The motor is disposed on the shaft. The motor is concentric with the shaft and is located between the cutting blade and the first handle.

Abstract: A work machine includes a motor and a sensor disposed in a front unit, a motor controller disposed in a rear unit, a motor power line and a sensor signal line disposed along an operation rod, and a pair of electric connectors. The motor power line includes first and second partial motor power lines disposed along the first and second partial rods respectively. The sensor signal line includes first and second partial sensor signal lines disposed along the first and second partial rods respectively. A first electric connector includes first electric terminals, each of which is coupled with corresponding one of the first partial motor power line or the first partial sensor signal line, and a second electric connector includes second electric terminals, each of which is coupled with corresponding one of the second partial motor power line or the second partial sensor signal line.

Abstract: A vegetation cutter comprises a frame rod having a front end portion and a rear end portion, and assuming a hollow tube having an open front end; a cutter head mounted on the front end portion of the frame rod and including a drive motor, a cooling fan to be rotated by the drive motor, and a rotary cutter to be rotated by the drive motor; and a power head mounted on the rear end portion of the frame rod and providing electric power for the drive motor. The frame rod is provided with an air intake aperture located at a position rearward than the cutter head and communicating through the hollow tube toward the cutter head. The frame rod is comprised of a front part rod and a rear part rod separably coupled together by means of a tubular joint. The air intake aperture is located on the front part rod.

Abstract: A power tool includes a housing and an output shaft supported by the housing for rotation about an axis. The power tool further includes a first motor disposed in the housing and a second motor disposed in the housing and coupled to the first motor. The first motor drives the output shaft and does not drive the second motor when in a first power mode, and the second motor drives the first motor and the output shaft when in a second power mode.

Abstract: A trimmer head for cutting vegetation is adaptable to operate in blade trimming mode and in monofilament trimming mode, and requires minimal time and effort to change between the two modes. The device comprises a bottom plate and a top plate. The top and bottom plate are urged together, thereby locking the blades in place. When the top and bottom plate are separated and rotated relative to one another, a blade may be inserted or removed from the blade posts by a gap formed between the top of the blade post and the top plate. The top plate includes a surface having a plurality of trimmer blade posts adaptable to pivotally mount at least one trimmer blade. The top plate further comprises a plurality of monofilament holes for receiving a monofilament line therethrough.