Reversible rotary actuator with spring return

Rotary electric actuator with a mechanical spring return...

Rotary spring-return actuator with safety feature

Rotating mechanism for a crystal ball

Rotation damper

Solid state energy storage

Special effects drive mechanism for self-propelled toy vehicles

Speed governing and decoupling drive mechanism

Spiral spring power source for toy

Spring assemblies

Spring cartridge for spring operated re-wind mechanism

Spring drive

Spring drive

Spring drive assembly

Spring drive device

Spring drive for toy vehicles

Spring drive means for toys

Spring drive mechanism, particularly for mobile toys

Spring drive unit of pull-back windup type

Spring driven apparatus