A hand-held power tool drive device includes at least one wobble drive unit that has at least one rotatably mounted drive element, with at least one wobble unit positioned on the at least one drive element. The drive device also includes at least one counterweight unit that has at least one movably mounted compensating element configured to be driven by the at least one wobble unit. The at least one wobble unit includes at least one force application point that is configured to drive the at least one compensating element. An axis extending through a rotational axis of the at least one drive element and the at least one force application point encloses an angle of between 0° and 135° with a wobble element longitudinal axis of a wobble element of the at least one wobble unit.

A power tool includes a motor housing having a motor configured to rotate an output shaft about a drive axis and a gear housing defining a gear compartment. A pinion gear is supported by the gear housing that is coupled to the output shaft for rotation about the drive axis. A bevel gear is supported by the gear housing for rotation about a bevel axis and includes a geared portion that is meshingly engaged with the pinion gear. A crank pin extends from the same side of the bevel gear as the geared portion at a position offset from the bevel axis. An articulating housing is pivotably supported by the gear housing for pivotal movement about the bevel axis. A plunger member is supported by the articulating housing for reciprocating movement along a reciprocating axis. The plunger member includes a yoke end portion coupled to the crank pin.

A power tool includes a motor housing having a motor configured to rotate an output shaft about a drive axis and a gear housing defining a gear compartment. A pinion gear is supported by the gear housing that is coupled to the output shaft for rotation about the drive axis. A bevel gear is supported by the gear housing for rotation about a bevel axis and includes a geared portion that is meshingly engaged with the pinion gear. A crank pin extends from the same side of the bevel gear as the geared portion at a position offset from the bevel axis. An articulating housing is pivotably supported by the gear housing for pivotal movement about the bevel axis. A plunger member is supported by the articulating housing for reciprocating movement along a reciprocating axis. The plunger member includes a yoke end portion coupled to the crank pin.

A scroll saw includes a base providing a worktable, a motor mounted in the base and having an output shaft, a transmission unit mounted in the base and including first and second transmission devices respectively connected to the two opposite ends of the output shaft of the motor and respectively disposed above and below the worktable, and a saw blade having opposing top and bottom ends respectively connected to the first and second transmission devices of the transmission unit. Thus, when the motor is started, the first and second transmission devices are driven to alternatively move forward and backward in a reciprocating action, and the saw blade is driven to move up and down in a reciprocating action, avoiding vibration of the saw blade and the base and enhancing cutting stability.

A scroll saw includes a base providing a worktable, a motor mounted in the base and having an output shaft, a transmission unit mounted in the base and including first and second transmission devices respectively connected to the two opposite ends of the output shaft of the motor and respectively disposed above and below the worktable, and a saw blade having opposing top and bottom ends respectively connected to the first and second transmission devices of the transmission unit. Thus, when the motor is started, the first and second transmission devices are driven to alternatively move forward and backward in a reciprocating action, and the saw blade is driven to move up and down in a reciprocating action, avoiding vibration of the saw blade and the base and enhancing cutting stability.

A jigsaw generally includes a housing containing a motor activated by a trigger assembly. A single control member is connected to the housing and configured to be accessible by a user. A reciprocating shaft moves at a reciprocation speed and at a magnitude of orbital motion when the trigger assembly is in a retracted condition. The single control member is operable to be positioned among a plurality of positions. Each of the positions corresponds to a predetermined combination of values of the reciprocation speed and the magnitude of the orbital motion.

A jigsaw generally includes a housing containing a motor activated by a trigger assembly. A single control member is connected to the housing and configured to be accessible by a user. A reciprocating shaft moves at a reciprocation speed and at a magnitude of orbital motion when the trigger assembly is in a retracted condition. The single control member is operable to be positioned among a plurality of positions. Each of the positions corresponds to a predetermined combination of values of the reciprocation speed and the magnitude of the orbital motion.

In some embodiments, a cutting system including a movable blade operably coupled to a motor is disclosed, wherein the cutting system comprises a diverting feature. In some embodiments, a diverter proximity relative to the movable blade is selected to facilitate diversion of a material during cutting. In at least one embodiment, the movable blade may be a circular blade or a reciprocating blade with a thickness of less than 3/32 of an inch. A cutting system according to the present invention may be coupled to a container, for example, a residential trash container or a residential recycling container.

A transmission device for a power-driven cutting tool includes a base, a transmission component, a linking component, a shaft component and a link component. The base has a through cavity, a sleeve and a receiving portion. The transmission component is penetratingly disposed in the through cavity, so as to couple the transmission component and the base together. The linking component is penetratingly disposed in the sleeve, so as to couple the linking component and the base together. The shaft component and the link component are disposed in the base. A power source drives the linking component and thereby sequentially drives the shaft component, link component, and transmission component, allowing a cutter of the power-driven cutting tool to undergo reciprocating displacements along a linear path for performing a cutting operation. The transmission device features enhanced structural rigidity, allowing the cutter to move back and forth along a linear track.

A transmission device for a power-driven cutting tool includes a base, a transmission component, a linking component, a shaft component and a link component. The base has a through cavity, a sleeve and a receiving portion. The transmission component is penetratingly disposed in the through cavity, so as to couple the transmission component and the base together. The linking component is penetratingly disposed in the sleeve, so as to couple the linking component and the base together. The shaft component and the link component are disposed in the base. A power source drives the linking component and thereby sequentially drives the shaft component, link component, and transmission component, allowing a cutter of the power-driven cutting tool to undergo reciprocating displacements along a linear path for performing a cutting operation. The transmission device features enhanced structural rigidity, allowing the cutter to move back and forth along a linear track.