Patent ID: 7188995

Claim:
A tourbillon ( 1 ) with a base plate ( 3 ), a main bearing ( 22 ) and a platform ( 2 ) with a platform main axis ( 32 ), characterised in that an inner ring ( 24 ) of the main bearing ( 22 ) is connected with the platform main axis ( 32 ) of the tourbillon ( 1 ) and an outer ring ( 23 ) of the main bearing ( 22 ) is connected with the base plate ( 3 ) of the tourbillon, and that an upper balance bearing ( 18 ) is connected with the platform ( 2 ) and a lower balance bearing ( 26 ) is connected with the base plate ( 3 ), and that the platform main axis ( 32 ) has an opening ( 34 ), in which a balance axis ( 19 ) is arranged.