210results about "Hand-held trimmers" patented technology

A lawn mower comprises an operation arm, a driven shaft rotatably supported inside the operation arm and having two opposite ends, a cutter operatively connected to one end of the driven shaft, a power source operatively connected to the other end of the driven shaft for generating a drive power to be transmitted to the cutter through the driven shaft, wherein said power source is selective from an engine and an electric motor, an arm side joint case provided on the end of the operation arm, a power source side joint case provided on a housing of the power source and detachably and selectively connected to the arm side joint case, and a centrifugal clutch incorporated in the arm side joint case and having a first member connected to the driven shaft, a second member detachably and selectively connected to the power source and a third member provided to engage the first member and the second member according to the centrifugal force applied thereto.

A casing of a hedge clipper which is a portable tool is provided with a power source housing in which an electric motor is housed and a main handle held by a worker, and blades serving as a tip tool are provided to the casing. An operation display panel is provided on the main handle, and a driving information display unit which displays a battery remaining capacity and a rotation speed of an electric motor as a plurality of pieces of driving information is provided on the operation display panel. The selection of the information to be displayed is switched by the operation of an operation switch unit provided in the operation display panel.

An improved spool construction for carrying a length of cutting line in a trimmer head housing on a flexible line rotary trimmer wherein the spool comprises separately molded upper and lower sections of single piece construction that are pressed together in a snap fitment to define a cylindrical body portion, at least one flange projecting radially therefrom and a line receptor channel having a smooth interior surface that traverses the spool and communicates opposed open outer channel ends in the flange that are radially alignable with opposed line openings in a housing skirt, with an open channel portion in a lower spool surface to provide access to the channel intermediary of the open channel ends with the spool operatively connected to the housing for line loading and replacement without having to interrupt the operative connection between the spool and the housing.

A cutting device, particularly a lawn mower, has at least one rotating knife mounted on a rotating, motor-driven knife carrier by a screwless, detachable connection. This connection is detachable by a relative rotation between the knife and the knife carrier. It is essential that the connection between the knife and its knife carrier be made by a centrally arranged bayonet lock and that this bayonet lock be locked in the closed position by an additional locking element.

A grass trimmer includes a fixed cutter device secured to a housing and having one or more stationary cutter blades extended out of the housing, a movable cutter device rotatably secured to the fixed cutter device and having one or more cutter blades movable relative to the stationary cutter blade of the fixed cutter device to conduct cutting operations by an eccentric member of a rotary member. A drive shank is secured to the rotary member, and a power tool may engage with the shank, to drive the rotary member and the eccentric member relative to the movable cutter device, and to move the movable cutter device relative to the fixed cutter device in reciprocating action.

A power tool includes an inner housing (50) at least partially housed within and spaced from an outer housing (30). The inner housing supports a tool (102, 302), such as a pair of shear blades, and houses a motor (80) that drives the tool. The outer housing includes a grip (14, 18) to be grasped by a user. At least one vibration insulator (71-75) can be disposed between the inner housing and the outer housing and in a manner such that the vibration insulator(s) is(are) protected by the outer housing. An intake opening (60a, 60b) and exhaust opening (64a, 64b) can be formed in the inner housing and can be shielded by respective portions of an inner surface of the outer housing.

A cutting line for brush-cutting, edge-trimming and similar has a generally circular cross-section and, on its periphery, has a plurality of notches spaced apart by a distance of between 12 and 19 mm approximately and aligned along at least one direction parallel to an axis of the line, the length of the notches, measured along the line, being substantially shorter than the spacing distance. The cutting line permits a reduction in the operating noise of vegetation cutting devices such as edge-trimmers, brush-cutters, etc.

A gearbox includes a housing having therein a receiving chamber, a transmission gear wheel mounted in the receiving chamber for rotation driven by an external driving force, an eccentric shaft assembly mounted in the receiving chamber and coupled to the transmission gear wheel for rotation together with the transmission gear wheel and driving action of a cutter, and a lubricating blade mounted at a bottom side of the receiving chamber, rotatably connected with the eccentric shaft assembly for rotation together with the eccentric shaft assembly, and having a plurality of arched grooves for delivering the lubricating oil located at the bottom side of the receiving chamber to the transmission gear wheel and the eccentric shaft assembly by a centrifugal force generated by the rotation.

A handheld electric tool includes a working device for performing a function of the handheld electric tool, a powering device for provide a driving force to the working device, and a connecting device for connecting the working device and powering device. The powering device includes: an electric motor, a power housing having an air inlet and an air outlet, a transmission mechanism for transmitting power generated by the electric motor and a circuit board for controlling the electric motor, a fan can be driven by the electric motor to provide an airflow which flows from the air inlet to the air outlet. The circuit board, the transmission mechanism and the electric motor are disposed between the air inlet and the air outlet such that the airflow flows through the circuit board, the transmission mechanism and the electric motor successively. The handheld electric tool has excellent cooling effect.

A head cover trimming system for trimming around a ground level head cover includes a head cap and a grass trimmer assembly. The head cap is provided on the head cover and includes a centering member. The grass trimmer assembly includes a head member having a peripheral edge portion along which is mounted a cutting element. The grass trimmer assembly is driven through a drive shaft connected to a rotary tool at one end. Arranged within the head member is a retractable centering shaft. When the head member is placed over the head cover, the centering shaft is received by the centering member to center the grass trimmer about the head cover. The centering shaft retracts into the head member to allow the rotating cutting element to trim the area around the head cover.

A ball handle assembly for a handheld tool is provided. The handheld tool includes a powered mechanism, an actuating mechanism for actuating the powered mechanism, and an elongated boom extending between the powered mechanism and the actuating mechanism. A ball handle assembly is adjustably attached to the boom to allow a user to adjust the ball handle assembly relative to the boom to provide a comfortable and ergonomic orientation regardless of the handedness of the operator. The ball handle assembly is translatable along the length of the boom, and the ball handle assembly provides for three degrees of rotation relative to the boom.

A grass-cutting head (1) including: a housing (3); and at least one spool (5) placed in the housing and on which a cutting line (F) can be wound. The spool is accessible from the outside to enable a supply of cutting line to be wound onto it without taking said spool out of the housing. A stop is provided to hold the spool in the housing while the supply of cutting line is being wound onto the spool.

A gearbox includes a housing having therein a receiving chamber, a transmission gear wheel mounted in the receiving chamber for rotation driven by an external driving force, an eccentric shaft assembly mounted in the receiving chamber and coupled to the transmission gear wheel for rotation together with the transmission gear wheel and driving action of a cutter, and a lubricating blade mounted at a bottom side of the receiving chamber, rotatably connected with the eccentric shaft assembly for rotation together with the eccentric shaft assembly, and having a plurality of arched grooves for delivering the lubricating oil located at the bottom side of the receiving chamber to the transmission gear wheel and the eccentric shaft assembly by a centrifugal force generated by the rotation.

A transmission shaft assembly includes a connecting tube extended along a central axis, a transmission shaft being a rigid shaft made of metal material, which is extended along the central axis and disposed in the connecting tube, a first limiting element disposed on an end of the connecting tube and formed with a first hole allowing the transmission shaft to pass there through, a second limiting element disposed on the other end of the connecting tube and formed with a second hole allowing the transmission shaft to pass there through, and a bushing. The bushing includes a main body formed with a channel extended along the central axis and several projecting parts disposed on the periphery of the main body. The bushing is located in the connecting tube and disposed between the first limiting element and the second limiting element. The transmission shaft passes through the first hole, the channel, and the second hole successively.

A trimmer head for a rotary line trimmer including a housing operatively connected to the trimmer and a spool for carrying cutting line thereon. The spool is operatively connected to the housing for rotation therewith and defines a pair of opposed line receptor channels having opposed open ends, traversing opposed portions of the spool and defining opposed outlet openings above a lowermost end of the spool. The channels can be aligned with the eyelets in the housing skirt such that lengths of cutting line can be inserted therethrough and wrapped about the spool upon relative rotation of the spool and housing without having to interrupt the operative connection therebetween. The channel outlet openings provide access to the inner ends of the line so that the line also can be pulled from the head without having to interrupt the operative connection therebetween.

The invention discloses a grass trimmer. The grass trimmer includes a grass cutting head and a motor; the motor is used for driving the grass cutting head to rotate with a rotation axis as a shaft; the grass cutting head comprises a spool and a head shell, the spool is used for winding a grass cutting rope, and the head shell is used for accommodating at least part of the spool; the grass cuttinghead is provided with an automatic winding mode; when the grass cutting head is in the automatic winding mode, the motor drives the spool or the head shell, so that with respect to the head shell, thespool generate relative rotation with the rotation axis as the shaft and rotating in a first rotation direction, thereby automatically winding the grass cutting rope onto the spool; the grass cuttinghead also includes an operation member for operation; the grass cutting head is also provided with a manual winding mode; and when the grass cutting head is in the manual winding mode, the operationmember is manually operated, so that with respect to the head shell, the spool is driven to generate relative rotation with the rotation axis as the shaft and rotating in the first rotation direction,thereby winding the grass cutting rope onto the spool. The grass trimmer combines manual winding and automatic winding into one body, and facilitates operation of users.

In a power working machine where output power of a drive source is adjustable by a throttle lever pivotally movable between a non-operating position and an operating position, an operating handle, generally in the shape of a closed loop, is rotatably mounted on a shaft section extending from a machine body. Throttle lock lever is provided on the operating handle for disabling the pivotal movement of the throttle lever when necessary. The operating handle includes a lock mechanism for locking the handle at a desired rotational position, and an operation lever for unlocking the lock mechanism to permit rotational movement of the handle and simultaneously locking the throttle lock lever. Simultaneously with the unlocking of the lock mechanism, the operation lever locks the throttle lever in the non-operating position.

The invention relates to improvements in or relating to braking systems, in particular to an apparatus for reducing the stopping time of a moving body in a gardening machine, for example, the rotary blade of a rotary lawnmower. The present invention also relates to a gardening machine having such an apparatus, more specifically to a lawncare machine such as lawnmowers. An apparatus for reducing the stopping time of a moveable body in a gardening machine is described, the apparatus comprises a brake acting permanently upon a component of the drive mechanism of the moveable body. In particular, an apparatus is described comprising an electric motor driving a driven shaft by means of an indirect drive assembly. The apparatus comprises a brake system in which a brake element is in substantially permanent contact with a component of the indirect drive assembly. In a preferred embodiment the brake system comprises an annular brake disc and the brake element comprises a brake pad biased into contact with the brake disc. The present invention also provides a lawncare apparatus comprising the apparatus described above, in particular, a lawnmower preferably of the rotary type.

A lawn trimming device attachable or attached to the power take off end of a line trimmer primary unit to be powered by the line trimmer. The device includes a hood with a downwardly facing opening to allow the opening to be placed parallel to the ground, the hood defining a cutting cavity. A coupling of the hood to the line trimmer primary unit is provided and a shaft is included. A cutting element rotatably mounted relative to the hood from the shaft is provided and wherein the shaft is engageable to the line trimmer primary unit to derive rotational power from the line trimmer primary unit. The cutting element is positioned within the cutting cavity of the hood adjacent the opening. A hovering fan is also preferably included within the hood.

An electric working machine (1) including: a motor; a control unit configured to control rotation of the motor; a fixed part (3) provided with a handle having a grip portion (43); a movable part (4) held by the fixed part (3) and is configured to be extendible by sliding relative to the fixed part (3); and a cutting blade (155) provided to a end portion of the movable part (4) and is configured to be driven by the motor; characterized in that the electric working machine (1) further includes a detection unit which is connected to the control unit and is configured to detect whether or not the movable part (4) is positioned at a predetermined extended position relative to the fixed part (3).

A lawn mower comprises an operation arm, a driven shaft rotatably supported inside the operation arm and having two opposite ends, a cutter operatively connected to one end of the driven shaft, a power source operatively connected to the other end of the driven shaft for generating a drive power to be transmitted to the cutter through the driven shaft, wherein said power source is selective from an engine and an electric motor, an arm side joint case provided on the end of the operation arm, a power source side joint case provided on a housing of the power source and detachably and selectively connected to the arm side joint case, and a centrifugal clutch incorporated in the arm side joint case and having a first member connected to the driven shaft, a second member detachably and selectively connected to the power source and a third member provided to engage the first member and the second member according to the centrifugal force applied thereto.

A trimmer head for a trimmer having a shaft defining a rotation axis. The trimmer head comprising a housing including a main housing and a lower cover, and wherein the main housing contains a pair of opposed eyelets through which trimmer line is discharged. A spool encased within the housing, with a bump knob connected thereto, and having a passageway with opposed ends and extending from one side of the spool to another, the opposed ends being alignable with the eyelets to receive the line. A first set of a plurality of ramps located on an inside surface of the main housing and a second set of a plurality of ramps located within a center barrel of the spool. The two sets of ramps interact to control the direction of releasing line from the trimmer head and forcing indexing of the spool when the bump knob is bumped.

The invention relates to a method of developing tree seedlings, including germinating the seeds on a growing medium and air pruning the roots of the seedlings.

The present invention relates to a hand-held tool. It includes a longitudinally-extended handle bar, at least one handle set on the handle bar, armrest connected with handle bar and working component set on the end portion of handle bar. The described handle at least includes two holding portions, in with first holding portion is connected with handle bar, the included angle between fist holding portion and handle bar is alpha, the second holding portion is connected with said first holding portions, and the included angle between them is beta, in which at least one of included angle alpha and included angle beta is adjustable, and another end of said second holding portion has a free tail end, if the first holding portion is matched with said armrest, the user can utilize single hand to make operation.

A blade is formed of a vertical segment. The vertical segment has a central aperture. The vertical segment further has long parallel side edges, short parallel end edges and upturned parallel ends. Each end has a leading edge and a trailing. A horizontal cutting edge is formed into each leading edge of the upturned parallel ends. A vertical cutting edge is formed into each long edge adjacent to a horizontal cutting edge.

An implement comprising a first handle, on which are disposed control elements for the implement, and a second handle. The first handle is adjustable between a first operating position for a two-handed operation in which the implement is adapted to be guided by both the first handle and the second handle, and a second operating position for one-handed operation in which the implement is adapted to be guided by the first handle.

Hand-held implement has a tool, a drive motor for driving the tool and a guide rod. First end of the guide rod is connected to the drive motor. Second end of the guide rod is connected to the tool of implement. Housing is fixed on the guide rod at the second end of the guide rod whereby an electrical insulation is arranged between the housing and the second end of the guide rod to prevent the discharge of the guide rod.

The invention discloses a plant cutter which comprises a front handle. The front handle comprises a holding part and a connecting part. The connecting part is arranged on an operation rod and is placed between a main handle and a working head. An assembling structure is arranged between the holding part and the connecting part. The assembling structure comprises a first assembling structure and a second assembling structure, the first assembling structure is fixedly arranged on the holding part, and the second assembling structure is fixedly arranged on the connecting part and is matched with the first assembling structure in shape. Under a first state, the holding part and the connecting part are separated, under the second state, the first assembling structure and the second assembling structure are integrally connected in a matched mode, and the holding part is connected to the operation rod. The connecting part which does not affect the packaging size is arranged on the operation rod and is packaged along with a whole machine, the holding part which affects the packaging size is packaged independently, the packaging size of the whole machine and conveying cost are lowered, and after a user buys the plant cutter, the user can quickly assemble the front handle through the assembling structure quickly by himself.