Patent ID: 8409042

Claim:
An externally rotating mechanism, comprising: an external rotating mechanism ( 100 ) including a wheel hub ( 101 ) having a hollow cylindrical housing structure having central axle holes ( 102 ) at opposite ends of the housing structure and bearings ( 103 ) installed in the axle holes; coaxial fixed axle structures ( 104 ) extending through the bearings ( 103 ) and axle holes ( 102 ) at opposite ends of the housing structure, said wheel hub ( 101 ) being rotatable around the fixed axle structures ( 104 ); an electrical machine ( 300 ) having an electrical machine arbor ( 301 ), a stator ( 311 ) fixed to the electrical machine arbor ( 301 ), and an external rotor ( 312 ) rotatably mounted on the electrical machine arbor ( 301 ); an offset structure ( 200 ) fixed to the axle structures ( 104 ), said offset structure ( 200 ) including extension arms ( 105 ) for mounting the electrical machine arbor ( 301 ) at a location within the hollow cylindrical housing structure and offset from the fixed axle structures ( 104 ); a transmission including at least one of the following running wheel arrangements for transmitting rotational power between the external rotor ( 312 ) of the electrical machine and the external rotating mechanism ( 100 ): (a) a first running wheel combination including a running wheel ( 403 ) fixed to one side of the external rotor ( 312 ) and rotatably coupled with a ring-shaped inner running wheel ( 402 ) fixed to and installed inside the wheel hub ( 101 ) coaxially with the fixed axle structures ( 104 ); (b) a pair of running wheels ( 403 ) coaxially fixed to opposite sides of the external rotor ( 312 ) and rotatably coupled with a pair of ring-shaped inner running wheels ( 402 ) fixed to and installed inside opposite sides of the wheel hub ( 101 ) coaxially with the fixed axle structures ( 104 ); (c) a ring-shaped outer running wheel ( 413 ) fixed to and extending around a rotating outer casing of the electrical machine ( 300 ) and rotatably coupled with a ring-shaped inner running wheel ( 412 ) installed on the external rotating mechanism ( 100 ); (d) both running wheel arrangement (a) and running wheel arrangement (c) installed simultaneously; and (e) both running wheel arrangement (b) and running wheel arrangement (c) installed simultaneously.