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2. Lift chair - Wikipedia

   en.wikipedia.org/wiki/Lift_chair

   Lift chairs at Tampa Lift Chair Showroom. Lift chairs, also known as lift recliners or riser armchairs, are chairs that feature a powered lifting mechanism that pushes the entire chair up from its base and so assists the user to a standing position. In the United States, lift chairs qualify as durable medical equipment under Medicare Part B. [1]

3. Linear actuator - Wikipedia

   en.wikipedia.org/wiki/Linear_actuator

   A traveling-nut linear actuator has a motor that stays attached to one end of the lead screw (perhaps indirectly through a gear box), the motor spins the lead screw, and the lead nut is restrained from spinning so it travels up and down the lead screw. A traveling-screw linear actuator has a lead screw that passes entirely through the motor.

4. Rack and pinion - Wikipedia

   en.wikipedia.org/wiki/Rack_and_pinion

   A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.

5. Actuator - Wikipedia

   en.wikipedia.org/wiki/Actuator

   The displacement achieved is commonly linear or rotational, as exemplified by linear motors and rotary motors, respectively. Rotary motion is more natural for small machines making large displacements. By means of a leadscrew, rotary motion can be adapted to function as a linear actuator (which produces a linear motion, but is not a linear motor).

6. La-Z-Boy - Wikipedia

   en.wikipedia.org/wiki/La-Z-Boy

   Knabusch and Shoemaker then upholstered their innovation and marketed it as a year-round chair. The chair was a success; they held a contest to name it—La-Z-Boy was the winner. [3] In 1969, after years primarily as a manufacturer of recliners, La-Z-Boy started designing other products including reclining sofas, sleep sofas and modular groups.

7. The plane that crashed in South Korea is one of the world's ...

   www.aol.com/plane-crashed-south-korea-one...

   That means the model makes up about 17% of the world’s in-service commercial passenger jet fleet. The average age of the world’s 737-800 fleet is 13 years old, according to Cirium, and the ...