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2. The best stair lift for 2024: Chair lifts that make ... - AOL

   www.aol.com/lifestyle/best-stair-lift-134610076.html

   Make sure that outdoor stair lifts have durable elements, like weather-resistant seat covers and housing for any electrical or mechanical parts Maintenance and warranty Read about the manufacturer ...

3. Actuator - Wikipedia

   en.wikipedia.org/wiki/Actuator

   An actuator is a component of a machine that produces force, torque, or displacement, when an electrical, pneumatic or hydraulic input is supplied to it in a system (called an actuating system). The effect is usually produced in a controlled way. [1] An actuator translates such an input signal into the required form of mechanical energy.

4. Valve actuator - Wikipedia

   en.wikipedia.org/wiki/Valve_actuator

   If there is a spring inside of the actuator, it will force the valve open or closed and will keep it in that position while power is restored. An actuator may be specified "fail open" or "fail close" to describe its behavior. In the case of an electric actuator, losing power will keep the valve stationary unless there is a backup power supply.

5. Linear actuator - Wikipedia

   en.wikipedia.org/wiki/Linear_actuator

   A linear actuator is an actuator that creates linear motion (i.e., in a straight line), in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals such as disk drives and printers, in valves and dampers , and in many other places where linear ...

6. Detachable chairlift - Wikipedia

   en.wikipedia.org/wiki/Detachable_chairlift

   A detachable chairlift or high-speed chairlift is a type of passenger aerial lift, which, like a fixed-grip chairlift, consists of numerous chairs attached to a constantly moving wire rope (called a haul rope) that is strung between two (or more) terminals over intermediate towers. In contrast to the fixed-grip version, the chairs of a ...

7. Lift table - Wikipedia

   en.wikipedia.org/wiki/Lift_table

   Lift tables can also be driven by pneumatic sources, trapezoidal-threaded screw drives, push chains or by hydraulic foot pump when the load is not heavy. The choice of drive mechanism depends on factors such as load capacity, lifting height, speed requirements, and the intended environment. Lift tables can be mounted in a pit for floor-level ...

8. Alfred P. Southwick - Wikipedia

   en.wikipedia.org/wiki/Alfred_P._Southwick

   Alfred Porter Southwick (May 18, 1826 – June 11, 1898) was a steam-boat engineer, dentist and inventor from Buffalo, New York.He is credited with inventing the electric chair as a method of legal execution.