The Stannah Sadler stair lift was intended to accommodate those with back again, hip, or knee pain by eradicating the need to squat out and in of a chair when you employ the lift. Gearless traction machines are reduced-velocity (low-RPM), large-torque electric powered motors driven possibly by AC or DC. https://simplyhomeliving.com/revolutionize-your-garage-with-jeep-hardtop-lifts-introducing-garagesmarts-smart-hard-top-lifter/