Telescoping (mechanics)
Encyclopedia
Telescope
A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation . The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s , using glass lenses...
or the lift arm of an aerial work platform
Aerial work platform
An aerial work platform, also known as an aerial device or elevating work platform, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height...
) from its rest state. In modern equipment, this is often done by hydraulics
Hydraulic drive system
A hydraulic drive system is a drive or transmission system that uses pressurized hydraulic fluid to drive hydraulic machinery. The term hydrostatic refers to the transfer of energy from flow and pressure, not from the kinetic energy of the flow....
.
See also Telescopic cylinder
Telescopic cylinder
Telescopic cylinders are a special design of hydraulic cylinder that provide an exceptionally long output travel from a very compact retracted length. Typically the collapsed length of a telescopic cylinder is 20 to 40%...
.