Patent ID: 8475324

Claim:
A three-end shaft type differential gear set with a controllable rotating direction, comprising: a first input/output shaft (S 101 ) and a second input/output shaft (S 102 ); a controllable brake device (BK 101 ); and a controllable clutch device (CL 101 ) between the second input/output shaft (S 102 ) and the first input/output shaft (S 101 ) for controllably coupling the second input/output shaft (S 102 ) to the first input/output shaft (S 101 ), wherein the first input/output shaft (S 101 ) has a sleeve shape and coaxially surrounds a part of the second input/output shaft (S 102 ), and wherein the controllable brake device (BK 101 ) and the controllable clutch device (CL 101 ) are controllable to cause the following relationships between the second input/output shaft (S 102 ) and the first input/output shaft (S 101 ): the rotating direction of the first input/output shaft (S 101 ) is the same as or different from the rotating the direction of the second input/output shaft (S 102 ), the second input/output shaft (S 102 ) and the first input/output shaft (S 101 ) to be in a released state without mutual transmission, and the second input/output shaft (S 102 ) and the first input/output shaft (S 101 ) to be locked in a non-rotating state.