Driving unit and tensioner
Dual arm chain tensioner for contacting multiple chain strands
Dual blade chain tensioner with damping
Dual friction surface asymmetric damped tensioner
Dual linear belt tensioner
Dual pinion anti-backlash tensioner for a robot
Dual source drive system
Dual spring tensioner
Dual tension clutch
Dual tensioner system for balance shaft drive
Dual-adjustable belt idler
Dynamic track tension adjuster