A scissor lift is a simple enough mechanism, but since he was 3D printing one that had to withstand the weight of the projector, it took him a while to get it right. Even the lead screw which ...

Manual Lifting is powered by a crank, pump, racket, or screw that relies upon the ... not design-exclusive and two types of lift mechanism can be utilized to provide the necessary raising. Scissor ...

From moving tools around to installing heavy fixtures on walls and ceiling, a scissor-lift platform is a great ... and pins are used in the scissor mechanism, and the lift drive is a stout Acme ...

Dock lifts may be actuated by hand cranks, screw drives, foot pumping and ratcheting, pneumatic air cylinders and air motors, hydraulic cylinders and motors, or electrical motors. There are a number ...