Planetary gear, change-speed transmission

Claim 1

A CHANGE-SPEED TRANSMISSION, ESPECIALLY FOR MOTOR VEHICLES, INCLUDING TWO PLANETARY GEAR SETS PROVIDING FOUR FORWARD SPEEDS AND A REVERSE SPEED AND A HYDRODYNAMIC DEVICE HAVING A DRIVING MEMBER AND A DRIVEN MEMBER AND OPERATIVELY CONNECTED AHEAD OF SAID PLANETARY GEAR SETS COMPRISING A TRANSMISSION INPUT SHAFT, A FIRST PLANETARY GEAR SET HAVING A PLURALITY OF TRANSMISSION ELEMENTS INCLUDING A SUN GEAR, A RING GEAR, AT LEAST ONE PLANET GEAR IN MESHING ENGAGEMENT WITH SAID SUN GEAR AND SAID RING GEAR, AND A PLANET CARRIER FOR SAID LAST-MENTIONED PLANET GEAR, SAID TRANSMISSION INPUT SHAFT BEING OPERATIVELY CONNECTED WITH THE SUN GEAR OF SAID FIRST PLANETARY GEAR SET., A SECOND PLANETARY GEAR SET HAVING A PLURALITY OF TRANSMISSION ELEMENTS INCLUDING A SUN GEAR, A RING GEAR, AT LEAST ONE PLANET GEAR IN MESHING ENGAGEMENT WITH SAID LAST-MENTIONED SUN AND RING GEARS, AND A PLANET CARRIER FOR SAID LAST-MENTIONED PLANET GEAR, A TRANSMISSION OUTPUT SHAFT OPERATIVELY CONNECTED WITH THE PLANET CARRIER OF SAID SECOND PLANETARY GEAR SET, MEANS OPERATIVELY CONNECTING THE PLANET CARRIER OF SAID FIRST PLANETARY GEAR SET WITH THE RING GEAR OF SAID SECOND PLANETARY GEAR SET, INPUT MEANS OPERATIVELY CONNECTED WITH SAID DRIVING MEMBER, SAID DRIVEN MEMBER BEING OPERATIVELY CONNECTED WITH SAID TRANSMISSION INPUT SHAFT, AND A PLURALITY OF SELECTIVELY ENGAGEABLE MEANS OPERATIVELY ASSOCIATED WITH AT LEAST SOME OF THE TRANSMISSION ELEMENTS OF SAID FIRST AND SECOND PLANETARY GEAR SETS TO ENABLE SELECTIVE ENGAGEMENT IN EACH OF SAID GEAR SETS OF A LOCK-UP DRIVE AND OF A NON-DIRECT DRIVE, RESPECTIVELY, INDEPENDENTLY OF THE ENGAGEMENT CONDITION OF THE OTHER GEAR SET INCLUDING SELECTIVELY ENGAGEABLE BRAKE MEANS OPERATIVE TO EFFECTIVELY BRAKE BOTH THE PLANET CARRIER OF SAID FIRST PLANETARY GEAR SET AND THE RING GEAR OF SAID SECOND PLANETARY GEAR SET, FURTHER SELECTIVELY ENGAGEABLE MEANS OPERABLE IN BOTH DIRECTIONS OF ROTATION FOR SELECTIVELY CONNECTING WITH EACH OTHER OR BRAKING AT LEAST SOME OF THE OTHER TRANSMISSION ELEMENTS OF SAID FIRST AND SECOND PLANETARY GEAR SETS TO THEREBY ENABLE OBTAINING SAID FOUR FORWARD SPEEDS, AND ADDITIONAL ENGAGEABLE MEANS OPERATIVELY CONNECTING SAID DRIVEN MEMBER AND SAID TRANSMISSION INPUT SHAFT WITH THE PLANET CARRIER OF SAID FIRST PLANETARY GEAR SET OT THEREBY PROVIDE A DIRECT DRIVE CONNECTION FROM SAID DRIVEN MEMBER TO THE SECOND PLANETARY GEAR SET THROUGH SAID FIRST PLANETARY GEAR SET UPON ENGAGEMENT OF SAID LASTMENTIONED ENGAGEABLE MEANS.