The German motion engineering specialist Wittenstein (formerly alpha gearheads) claims to have re-invented the servo worm gearhead with a new design that boosts torque levels by up to 50% and overcomes the problem of backlash increasing during the service life of the gearhead.
"A good scientist is a person with original ideas. A good engineer is a
person who makes a design that works with as few original ideas as
possible" - Freeman Dyson