Springs
Round wire helical springs
Flat wire helical springs
Cone compression springs
Helical torsion springs
Spiral torsion springs
Disc compression springs
Torsion bar solid
Torsion bar hollow
Leaf springs
Cylindrical tension bar
Flexure mechanisms
Flexure hinges
S-shaped beams
Hole hinges
Torsion hinges
Cross spring hinges
XY-parallel mechanism