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Known as the Bucket Truck, this particular vehicle has a bucket accessory along with an expandable arm used to raise staff high up into the air. Bucket Trucks are even called Aerial Boom Trucks. They have a lifting capacity of 150 kg to 700 kg and the bucket itself could be lengthened up to 10 meters in the air.
Knuckle Boom Trucks are a lot larger lift vehicles that are equipped together with a crane on the back of the apparatus. If the length of the vehicle is expanded, then the truck becomes a Trolley Boom Truck. These types of lift trucks have a lifting capacity of ten tons to fifty tons.
One more type of Boom Truck the Concrete Boom Truck which is a huge container on its rear. These are made to carry expandable pipe and to carry concrete. Concrete is pumped with the pipe into a particular location. Concrete Boom Trucks could be lengthened up to seventy meters.
The fluid coupling kind is actually the most popular type of torque converter used in auto transmissions. During the 1920's there were pendulum-based torque or also called Constantinesco converter. There are other mechanical designs used for always variable transmissions that can multiply torque. For example, the Variomatic is a kind which has a belt drive and expanding pulleys.
A fluid coupling is a 2 element drive which cannot multiply torque. A torque converter has an added element that is the stator. This alters the drive's characteristics through occasions of high slippage and produces an increase in torque output.
There are a at least three rotating components in a torque converter: the turbine, which drives the load, the impeller, which is mechanically driven by the prime mover and the stator, that is between the impeller and the turbine so that it could alter oil flow returning from the turbine to the impeller. Usually, the design of the torque converter dictates that the stator be prevented from rotating under whichever situation and this is where the term stator originates from. In point of fact, the stator is mounted on an overrunning clutch. This design prevents the stator from counter rotating with respect to the prime mover while still permitting forward rotation.
