torsion

(eg. fire, butterfly, interpretation )

torsion torsion /ˈtɔr ʃən/

In 1943, while working as a mechanical engineer in Philadelphia, Richard James saw a torsion spring fall off his desk and tumble end over end across the floor.
But the torsion balance did not work well in hilly land.
The torsion-bar mechanism operates by electricity to cut down side-sway and absorb bumps, will be installed as standard equipment on 1955 high-priced Packard lines.

Side-Mounted Hose Reel suits air and water applications.
Able to accommodate up to 50 ft of 3/8 in. ID hose, Series RT features heavy-duty side-mount plate. Ability to be mounted on its side makes this reel suited for mounting in cabinets, on vehicles, as well as in other tight spaces. In addition to promoting accessibility, stainless torsion spring and latch mounted on arm eliminate possibility of latch-out at full extension. Guide arm can be moved ...
on June 6, 2013 Source: ThomasNet