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Called the Bucket Truck, this particular vehicle has a bucket accessory with an expandable arm used to raise workers high up into the air. Bucket Trucks are likewise referred to as Aerial Boom Trucks. They have a lifting capacity of one hundred fifty kilograms to seven hundred kilograms and the bucket itself can be lengthened up to 10 meters in the air.
Knuckle Boom Trucks are much larger lift vehicles that are equipped together with a crane on the rear of the machinery. If the length of the vehicle is expanded, then the truck becomes a Trolley Boom Truck. These kinds of lift trucks have a lifting capacity of 10 tons to 50 tons.
Another type of Boom Truck the Concrete Boom Truck which is a big container on its back. These are made to lift concrete and to carry expandable pipe. Concrete is pumped with the pipe into a particular location. Concrete Boom Trucks are able to be extended up to seventy meters.
The most common type of torque converter used in car transmissions is the fluid coupling type. In the 1920s there was even the Constantinesco or also known as pendulum-based torque converter. There are various mechanical designs for always changeable transmissions that could multiply torque. Like for instance, the Variomatic is a kind that has expanding pulleys and a belt drive.
A fluid coupling is a 2 element drive that is incapable of multiplying torque. A torque converter has an extra element which is the stator. This alters the drive's characteristics through times of high slippage and generates 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, that is mechanically driven by the prime mover and the stator, which is between the turbine and the impeller so that it could alter oil flow returning from the turbine to the impeller. Traditionally, the design of the torque converter dictates that the stator be stopped from rotating under whatever situation and this is where the term stator starts from. In reality, 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.
