Noun
long narrow spring consisting of several layers of metal springs bracketed together
Source: WordNetleaf-spring
The leaf spring snaps the hammer away from the pole-piece, pushing the hammer out against a ribbon and placing an image of a dot onto the paper. Source: Internet
The original technology, patented by Printronix in 1974, has the top of a stiff leaf spring held back by a magnetic pole-piece. Source: Internet
His design incorporated a large wooden leaf spring as an accumulator to power the catapult. Source: Internet
To disengage, this leaf spring is pushed so it again rests flush against the handle allowing the knife to rotate. Source: Internet