Patent ID: 7410067
Filing Date: 2008-08-12
Classification: B66C

Abstract:
1. A remotely controlled drum carriage for movement along a suspended cable for skyline logging operations, which comprises: a chassis containing a power plant, and an electrical system which comprises a battery, electric starter and alternator for starting and operation of said power plant, and a main hydraulic pump with variable displacement, mechanically driven by said power plant, and which is, in-turn, connected to a hydraulic motor in a closed hydraulic loop, and a secondary hydraulic pump, smaller than the main hydraulic pump, for supplying pressurized hydraulic fluid to a solenoid-controlled selective distribution manifold, and a skidline cable drum assembly driven by said hydraulic motor and adapted to raise and lower a skidline relative to the carriage, and a skyline cable clamp assembly and controlling actuator to clamp or un-clamp said carriage to a skyline cable, and a radio control system that facilitates remotely controlling said carriage, and an electronic control system for performing control of said power plant and for performing control of said main hydraulic pump, for performing control of said skyline cable clamp actuator, and for performing control of said skidline cable drum assembly, and a rotational rate sensor that facilitates detection by said electronic control of the rotational rate of said power plant.