Apparatus for generating rotative force using spring

B-motor with floating locking plug

Backwound pre-stressed spring motor and method

Bi-directional spring holder assembly for an actuator

Clockwork motor, especially for toys

Constant force spring actuator

Continuous rotary actuator using shape memory alloy

Device for controlling the retraction of a mobile structure

Device for generating a rotary return force

Device for spring-loading a needleless innoculator

Differential drive linear actuator

Drive device for an actuator

Drive mechanism for toy running vehicles

Drive mechanism for toy running vehicles

Drive wheel equipped with power spring

Driving apparatus for an energy accumulator of a circuit breaker

Driving device for a moving body

Easy opening door control device

Elastic energy storage device

Elastic energy storing device