Abstract: Systems and methods for charging mobile devices are described, embodiments of the systems including: a base station; and a plurality of satellite charging units; each of the satellite charging units include a rechargeable power supply which can be recharged by the base station; each of the satellite units are arranged to recharge mobile devices by way of transferring charge from their power supply to the mobile device.

Abstract: A tree harvester of the type having a grapple assembly, shear assembly and de-limbing assembly where the grapple assembly and the de-limbing assembly are mounted on respective telescopically slidable carriers. Cables connect the de-limbing assembling (or grapple assembly) to the grapple carrier (or de-limbing carrier) to move the de-limbing assembly (or grapple assembly) along its carrier at substantially the same velocity as the relative velocity between the two carriers. The grapple assembly and de-limbing assembly may delimb two tree trunks in a single operation, both tree trunks being severed by the shear assembly into logs of substantially uniform length.

Abstract: A tree harvester of the type having a grapple assembly, shear assembly and de-limbing assembly where the grapple assembly and the de-limbing assembly are mounted on respective telescopically slidable carriers. Cables connect the de-limbing assembling (or grapple assembly) to the grapple carrier (or de-limbing carrier) to move the de-limbing assembly (or grapple assembly) along its carrier at substantially the same velocity as the relative velocity between the two carriers. The grapple assembly and de-limbing assembly may delimb two tree trunks in a single operation, both tree trunks being severed by the shear assembly into logs of substantially uniform length.