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US3330590A
|
|
Adjustable stabilized crane tongs
|
|
GB1039058A
|
|
Improvements in or relating to lifting hook devices
|
|
US3210115A
|
|
Power rotatable hook device
|
|
US3166702A
|
|
Speed control for induction motor having variable resistance secondary
|
|
GB943850A
|
|
Improvements in or relating to positioning devices
|
|
US3166697A
|
|
Dual motor control system for cranes
|
|
GB814434A
|
|
Improvements in or relating to cooling systems for an electrically powered travelling crane
|
|
US2912122A
|
|
Cooling system for power components of travelling cranes and the like
|
|
CA695252A
|
|
Eddy current braking system
|
|
CA555040A
|
|
Cooling system especially for massive non-stationary equipment
|
|
CA678535A
|
|
Dual control system for cranes
|
|
CA695247A
|
|
Hoisting control means using graduated hoisting torque for lowering
|
|
CA730045A
|
|
Power rotatable hook device
|
