Driving device for the traction of cables or chains
Driving pulley mechanism
Drum brake
Drum winches
Dual braking device for a power winch
Dual braking device for a power winch
Dual capstan puller and method
Dual capstan puller and method
Dual cluster crown block
Dual draw works heavy hoisting apparatus
Dual drive system for dragline with power interlock
Dual drive winch system
Dual speed winch using one-way clutches operating in opposite di
Dual-handled winch