Apparatus for automatic changing and shifting of gear transmission of power units, particularly of motor vehicles

Claim 1

IN AN ARRANGEMENT FOR AUTOMATICALLY CONTROLLING PARTICULARLY IN AN AUTOMATIC TRANSMISSION OF A MOTOR VEHICLE, A SLIDING-GEAR TYPE TRANSMISISION HAVING A DRIVEN INPUT SHAFT AND A DRIVEN OUTPUT SHAFT ARRANGED IN THE POWER TRAIN OF A PRIME MOVER, IN COMBINATION, AUTOMATIC ELECTRIC CONTROL MEANS FOR REGULATING THE ROTARY SPEED OF SAID DRIVING INPUT SHAFT, MEANS CONTROLLED BY SAID CONTROL MEANS FOR CAUSING THE SHIFTING OF THE GEARS OF SAID TRANSMISSION, SPEED RATIO DETECTOR MEANS INCLUDING AUXILIARY TRANSMISSION MEANS OPERATIVELY CONNECTED IN PARALLEL WITH THE SLIDING-GEAR TYPE TRANSMISSION, SAID AUXILIARY TRANSMISSION MEANS COMPRISING FIRST SHAFT MEANS DRIVEN BY THE DRIVING INPUT SHAFT AT A SPEED PROPORTIONAL TO THAT OF THE LATTER, AND SECOND SHAFT MEANS DRIVEN BY THE DRIVEN OUTPUT SHAFT AT A SPEED EQUALLY PROPORTIONAL TO THAT OF THE LATTER, A PLURALITY OF INDEPENDENTLY AXIALLY SHIFTABLE FIRST GEAR MEANS ON SAID FIRST SHAFT MEANS AND ROTATABLE THEREWITH, AND A PLURALITY OF SECOND GEAR MEANS ON SAID SECOND SHAFT MEANS AND INDIVIDUALLY IN FRICTIONAL DRIVING ENGAGEMENT THEREWITH, SAID PLURALITY OF SAID FIRST AND SECOND GEAR MEANS BEING SUBDIVIDED INTO MESHING PAIRS OF ONE OF SAID FIRST AND ONE OF SAID SECOND GEAR MEANS, THE NUMBER OF SAID PAIRS AND THE GEAR RATIO OF THE DIFFERENT PAIRS BEING THE SAME AS THE NUMBER OF PAIRS OF GEARS AND THEIR DIFFERENT GEAR RATIOS IN SAID SLIDING-GEAR TYPE TRANSMISSION, SAID FIRST GEAR MEANS MOVING INDIVIDUALLY AXIALLY ALONG SAID FIRST SHAFT MEANS BETWEEN A MIDDLE POSITION, AN EXTREME POSITION ON ONE SIDE ON AN EXTREME POSITION ON THE OTHER SIDE OF SAID MIDDLE POSITION DEPENDING UPON WHETHER THE ROTARY SPEED OF SAID FIRST SHAFT MEANS IS SUBSTANTIALLY EQUAL TO THAT OF SAID SECOND SHAFT MEANS, HIGHER AND LOWER THAN THE SAME, RESPECTIVELY, AND INCLUDING ELEC-