A disk saw felling head comprising a saw housing positioned between a disk saw and harvesting and bunching cylinders so as to provide visibility window laterally between a first mounting post and a second mounting post promoting visibility of a full width of a tree toward a cutting zone.

Disclosed is a self-powered timber slasher. The self-powered timber slasher includes a self-propelled carrier and a powered circular saw mounted on a first end of the self-propelled carrier, wherein the powered circular saw is configured to cut timber. Further, a hydraulic motor coupled to the powered circular saw impart a rotational motion to the powered circular saw based on a flow of the hydraulic fluid that is stored with a hydraulic tank as the hydraulic motor is in fluid connection with the hydraulic tank. Yet further, the self-powered timber slasher a wireless controller electrically coupled to the powered circular saw. The wireless controller is configured to control operation of the powered circular saw based on a command received over a wireless communication channel.

Disclosed is a self-powered timber slasher. The self-powered timber slasher includes a self-propelled carrier and a powered circular saw mounted on a first end of the self-propelled carrier, wherein the powered circular saw is configured to cut timber. Further, a hydraulic motor coupled to the powered circular saw impart a rotational motion to the powered circular saw based on a flow of the hydraulic fluid that is stored with a hydraulic tank as the hydraulic motor is in fluid connection with the hydraulic tank. Yet further, the self-powered timber slasher a wireless controller electrically coupled to the powered circular saw. The wireless controller is configured to control operation of the powered circular saw based on a command received over a wireless communication channel.

Simulated bog-down system and method for power tools. One power tool according to an example embodiment includes a power source and a motor selectively coupled to the power source. The motor includes a rotor and stator windings. The power tool includes an actuator configured to generate a drive request signal and a power switching network configured to selectively couple the power source to the stator windings of the motor. The power tool includes an electronic processor coupled to the power source, the actuator, and the power switching network. The electronic processor is configured to detect a load on the power tool and compare the load to a threshold. The electronic processor is configured to determine that the load is greater than the threshold, and to control the power switching network to simulate bog-down in response to determining that the load is greater than the threshold.

A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

A mobile apparatus with a fluid pressure-operated implement mounted at a distal end of a boom includes a connection apparatus for selectively rotating the implement about an actuator axis at the distal end of the boom. The connection apparatus includes a rotary actuator and a pressurized fluid circuit for delivery of pressurized fluid through the rotary actuator to the implement. The pressurized fluid circuit includes channels establishing a fluidic connection axially through the rotating shaft of the rotary actuator. The pressurized fluid circuit facilitates passage of pressurized fluid through an internal, protected environment to the implement.

A forestry machine configured to cut timber, where the forestry machine comprises a felling head including a support frame having an accumulation pocket, an accumulating arm, and a harvest arm. The forestry machine further comprises a stator having coils thereon adapted to produce a time varying stator magnetic field, a rotor having at least either a set of slots or a set of permanent magnets mounted thereon facing the stator and adapted to produce a radially directed flux or an axially directed flux. The rotor is rotatably coupled to the stator in axial alignment therewith by the time varying stator magnetic field. The rotor comprises a saw blade.

The present invention concerns a method for the indication of the sharpness of the teeth at a harvesting head at a forestry machine, an arrangement for the execution of the method, and a forestry machine for the use of the arrangement during execution of the method.

The present invention concerns a method for the indication of the sharpness of the teeth at a harvesting head at a forestry machine, an arrangement for the execution of the method, and a forestry machine for the use of the arrangement during execution of the method.

Disclosed is a self-powered timber slasher. The self-powered timber slasher includes a self-propelled carrier and a powered circular saw mounted on a first end of the self-propelled carrier, wherein the powered circular saw is configured to cut timber. Further, a hydraulic motor coupled to the powered circular saw impart a rotational motion to the powered circular saw based on a flow of the hydraulic fluid that is stored with a hydraulic tank as the hydraulic motor is in fluid connection with the hydraulic tank. Yet further, the self-powered timber slasher a wireless controller electrically coupled to the powered circular saw. The wireless controller is configured to control operation of the powered circular saw based on a command received over a wireless communication channel.