A log marking device (1) comprising a log marking tool (2) with a striking head (10) provided with adjustable marking members, and a setting unit (3) with setting members for setting the marking members in desired positions or states. The setting unit also comprises: —a housing (30) with a seat (31) for receiving the striking head; —actuators for controlling the movements of the setting members; and—an electronic control unit for controlling the actuators. The striking head (10) is moveable into a setting position, in which the striking head is received in the seat (31) of the setting unit with each marking member in contact with the associated setting member so as to allow the setting unit (3) to set the positions or states of the marking members by operation of the actuators.

The invention relates to a method for felling sawing using a forest machine. In the method, a felling head is used, which set near to the tree to be felled. In addition, sawing is performed on the tree using a saw device fitted to the felling head. Before sawing, the saw device is set to a selected level relative to the ground surface, which is recorded in the data system belonging to the forest machine. The invention also relates to a system for felling sawing using a forest machine.

The invention relates to a method for felling sawing using a forest machine. In the method, a felling head is used, which set near to the tree to be felled. In addition, sawing is performed on the tree using a saw device fitted to the felling head. Before sawing, the saw device is set to a selected level relative to the ground surface, which is recorded in the data system belonging to the forest machine. The invention also relates to a system for felling sawing using a forest machine.

A spreading device, a powder-like mixture composition and a method for spreading the composition for control or prevent forest pathogens on tree stumps are disclosed.

A spreading device, a powder-like mixture composition and a method for spreading the composition for control or prevent forest pathogens on tree stumps are disclosed.

A wood chip collection system having a stump grinding wheel, a chip chute and a chip collection bin. The chute is positioned such that chips generated by the rotation of the wheel when engaged in a stump will be directed into the chute. The chute, in turn is sized and shaped to permit the energy in the chips to move the chips into a collection bin. The bin is positioned adjacent to and in alignment with the trailing edge of the chute in order to effectively receive the chips.

Sensor systems for communications between heavy equipment machines during tree felling operations. A system includes a first heavy equipment comprising a first winch and a second heavy equipment comprising a second winch. The system includes a first cable attached to the first winch and a fulcrum roller and a second cable attached to the second winch and the fulcrum roller. The system is such that the first heavy equipment communicates with the second heavy equipment by way of long-range radio signals.

Sensor systems for communications between heavy equipment machines during tree felling operations. A system includes a first heavy equipment comprising a first winch and a second heavy equipment comprising a second winch. The system includes a first cable attached to the first winch and a fulcrum roller and a second cable attached to the second winch and the fulcrum roller. The system is such that the first heavy equipment communicates with the second heavy equipment by way of long-range radio signals.

Communications between heavy equipment machines during tree felling operations. A method includes identifying a tree felling area to be cut in a tree felling operation and determining instructions for executing the tree felling operation with two or more heavy equipment machinery. The method includes receiving first sensor data from a first heavy equipment during execution of the tree felling operation and providing the first sensor data to a second heavy equipment during execution of the tree felling operation.

Communications between heavy equipment machines during tree felling operations. A method includes identifying a tree felling area to be cut in a tree felling operation and determining instructions for executing the tree felling operation with two or more heavy equipment machinery. The method includes receiving first sensor data from a first heavy equipment during execution of the tree felling operation and providing the first sensor data to a second heavy equipment during execution of the tree felling operation.