SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL

**Definition:** This place covers:

Systems transferring mechanical energy by means of a fluid under pressure using the principles of fluid statics or hydrostatics, i.e. hydraulic or pneumatic systems

**Glossary:** - Pneumatic: using air or an inert gas (except steam) as a pressure medium. - Hydraulic: using a liquid as the pressure medium. - Telemotor: system or device in which a substantially constant amount of fluid is trapped between an input member and an output member to act as a fluid link - Servomotor: fluid-pressure actuator, e.g. a piston and a cylinder, directly controlled by a valve or other device (e.g. pump) which is responsive to operation of an initial controlling member (e.g. joystick). The initial controlling member may be adjacent to the servomotor or at a distance and may be, e.g. a hand lever.