Continuous variable speed transmission using variable coupling arrangement

A constantly variable speed transmission comprising:

• an input shaft driven by an engine flywheel;
• a drive shaft for driving the wheels of a vehicle;
• at least two fluid couplings, each fluid coupling comprising:
• an impeller and a turbine, each impeller and each turbine having vanes, each impeller controlled by the input shaft, each turbine configured to rotate in response to rotation of the respective impeller, each turbine connected to an output shaft, the output shaft configured to rotate with rotation of the respective turbine;
• a control module, the control module configured to adjust a distance between the impellers and turbines;
• odd drive gears located on a first counter shaft, the odd drive gears configured to engage with odd output gears;
• even drive gears located on a second counter shaft, the even drive gears configured to engage with even output gears;
• a shifting device configured to shift alternating gears such that a next gear in a shifting sequence is engaged simultaneously with a current gear;
• and
• the first and second counter shafts configured to transfer force from the fluid couplings to the drive shaft.