Dual-input differential planetary gear transmission

A dual planetary gear set transmission having arranged in parallel a first planetary gear set and second planetary gear set, each gear set having a sun gear, a plurality of planet gears meshed with a sun gear, a planet gear carrier, and a ring gear meshed with said planet gears wherein:

• each sun gear is identical, each planet gear is identical and each ring gear is identical;
• a first planet gear carrier is connected to a grounded shaft and a second parallel planet gear carrier is connected to a differential input member, said shaft and differential input member being arranged in parallel;
• said first planetary gear set and second planetary gear set are joined by means of the coupling of a first ring gear to a second ring gear, said ring gears being arranged in parallel;
• and
• a first sun gear acting as an input means and a second sun gear acting as an output means with a ratio of 1:1 as long as said first planet gear carrier and said second planet gear carrier are at rest whereby due to the grounded first planet gear carrier any differential input angle to said second planet gear carrier creates a proportional offset differential angle between said sun gears.

A dual planetary gear set transmission having arranged in parallel a first planetary gear set and second planetary gear set, each gear set having a sun gear, a plurality of planet gears meshed with a sun gear, a planet gear carrier, and a ring gear meshed with said planet gears wherein:

• each sun gear is identical, each planet gear is identical and each ring gear is identical;
• a first planet gear carrier is connected to a grounded shaft and a second parallel planet gear carrier is connected to a differential input member, said shaft and differential input member being arranged in parallel;
• said first planetary gear set and second planetary gear set are joined by means of the coupling of a first sun gear to a second sun gear, said sun gears being arranged in parallel;
• and
• a first ring gear acting as an input means and a second ring gear acting as an output means with a ratio of 1:1 as long as said first planet gear carrier and said second planet gear carrier are at rest whereby due to the grounded first planet gear carrier any differential input angle to said second planet gear carrier creates a proportional offset differential angle between said ring gears.

A dual planetary gear set transmission having arranged in parallel a first planetary gear set and second planetary gear set, each gear set having a sun gear, a plurality of planet gears meshed with a sun gear, a planet gear carrier, and a ring gear meshed with said planet gears wherein:

• each sun gear is identical, each planet gear is identical and each ring gear is identical;
• a first ring gear is connected to a grounded shaft and a second parallel ring gear is connected to a differential input member, said shaft and differential input member being arranged in parallel;
• said first planetary gear set and second planetary gear set are joined by means of the coupling of a first sun gear to a second sun gear, said sun gears being arranged in parallel;
• and
• a first planet gear carrier acting as an input means and a second planet gear carrier acting as an output means with a ratio of 1:1 as long as said first ring gear and said second ring gear are at rest whereby due to the grounded first ring gear any differential input angle to said second ring gear creates a proportional offset differential angle between said planet gear carriers.