It added a spinning propeller, a razor-sharp blade mounted a few inches inside the end of the vacuum hose.

With this design (which consists of a basic stator and squirrel-cage rotor), the fan's blades mount to a central hub, known as a flywheel.

It differs from the usual axe style, in that the blade mounts to looping prongs that affix to the shaft.

A food item is slid along the adjustable surface until it reaches a blade mounted on the fixed surface, slicing it and letting it fall.

A variant design uses a wheel-shaped blade mounted on a sliding shuttle attached to a rail.

In the rearview mirror, through the eddying sand, Janson caught a glimpse of the spinning auxiliary propulsion blades mounted on the craft's underside.

In Canada pickup trucks are used with snow removal operations with a blade mounted in front and optional de-icing equipment installed in the rear.

This shoe protects the blade mounting (and your thumbs!), but has an open construction to give good visibility when guiding the blade.

The toothed knife blades mounted on the sickle bar can easily be individually replaced if they get dull or damaged.

Abbott explained, "I could not get the blades mounted quite right, and they were never quite comfortable".