Traction Traction gas springs are spécial type ofsprings. The main différence ofsuch springs from standart lift action gas springs are that in normal position piston rod remains inside of the spring. In such desing gas compressed in spécial chamber behind piston, as resuit ofsuch construction could be reached high pressure inside of the gas spring that keeps piston rod in compressed position.Working principle of thèse gas springs is opposite to standart lift- action gas springs. Such spring are widely used for production of médical and fitness equipment, but prospective field of application is quite wide.