Axial displacement universal joint

An axial displacement universal joint capable of linear expansion and contraction while driving rotational movement between a driving shaft and a driven shaft while said shafts may be facing in different directions, said axial displacement universal joint comprising:

• a driving pivot joint including a first driving fork configured to extend from an end of said-driving shaft, a second driving fork, and a driving central crosspiece, said first driving fork having bores, said second driving fork having bores, and said driving central crosspiece being adapted to be received by said bores of said first and second driving forks, wherein said driving central crosspiece pivotally connects said first driving fork to said second driving fork;
• a driven pivot joint including a first driven fork configured to extend from an end of said driven shaft, a second driven fork, and a driven central crosspiece, said first driven fork having bores, said second driven fork having bores, and said driven central crosspiece being adapted to be received by said bores of said first and second driven forks, wherein said driven central crosspiece pivotally connects said first driven fork to said second driven fork;
• and
• an axial displacement device configured to mechanically connect said driving pivot joint to said driven pivot joint, said axial displacement device including:
• a first bearing plate having a first and second side, said second driving fork being formed integrally to a central position of said first side;
• a plurality of guiding and fastening columns respectively having a proximal end and a distal end, said proximal ends being formed integrally to said first bearing plate, and said plurality of guiding and fastening columns extend perpendicularly from said first bearing plate in a direction away from said first side;
• an intermediate plate positioned parallel to said first bearing plate with a clearance between said first bearing plate and said intermediate plate being provided by a relative distance between said intermediate plate and said first bearing plate, said intermediate plate having a plurality of through bores and a central column, said plurality of through bores being adapted to respectively receive said plurality of guiding and fastening columns thereacross, and said central column having a proximal end and a distal end, said proximal end of said central column being formed integrally to said intermediate plate, said central column extending from said intermediate plate in a direction away from said first bearing plate, said second driven fork being configured to extend from said distal end of said central column;
• and
• a second bearing plate positioned parallel to said intermediate plate, including a central bore adapted to receive said central column thereacross, said distal ends of said plurality of guiding and fastening columns are formed integrally to said second bearing plate;
• wherein altering said relative distance by linear displacement of said intermediate plate toward or away from said first bearing plate creates an equidistant displacement of said second driving fork from said second driven fork.