Study of the friction model of the bi-directional-servo brake;

Development of Power-enhanced Clamping Jaws for NC Heavy-duty Horizontal Lathe;

The application of cylinder-ball force amplifier in hydraulic fixture;

Compound drive system of two-step force amplifier composed of inclined planes and steel-balls which is based on fluid cylinder and symmetric mode;

Combing pneumatic muscle with mechanic force amplifier is an applied and creative design method.

Development and application of force boosting device for service wellhead;