Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

Conventional stages with rolling steel bearings exhibit friction and other mechanical nonlinearities; they are also dependent on servo-loop filters (including sluggish integrator terms) which all ...

A major challenge in lifting applications is moving loads at a linear rate while maintaining steady and level positioning on vertical and horizontal planes. One mechanical assembly satisfies these ...

The latest addition to the Allen Engineering line of mechanical-drive riding concrete trowels, the MSP 415 features two 46-inch-diameter, five-blade, non-overlapping rotors capable of speeds up to 145 ...