Patent ID: 7841960

Claim:
A multiple speed power transmission, comprising: first ( 20 , 80 , or 90 ), second ( 30 ), third ( 40 ), and fourth ( 50 ) epicylic gearing assemblies each comprising first, second, and third rotating elements, wherein: the second rotating element of the first epicyclic gearing assembly ( 26 , 84 , or 94 ) is connected to the first rotating element of the second epicyclic gearing assembly ( 32 ); the second rotating element of the second epicyclic gearing assembly ( 36 ) is connected to the third rotating element of the third epicyclic gearing assembly ( 44 ); and the third rotating element of the first epicyclic gearing assembly ( 24 , 86 , or 92 ), the second rotating element of the third epicyclic gearing assembly ( 46 ), and the third rotating element of the fourth epicyclic gearing assembly ( 54 ) are mutually connected; a gearbox input shaft ( 10 ) connected to the first rotating element of the third epicyclic gearing assembly ( 42 ); and an output shaft ( 12 ) connected to the third rotating element of the second epicyclic gearing assembly ( 34 ) and the second rotating element of the fourth epicyclic gearing assembly ( 56 ).