Patent ID: 7445584

Claim:
An exerciser comprising: a base having a right frame and a second frame which is located parallel to the right frame; a main shaft connected to the right and left frames, a right passive wheel, a central active wheel and a left passive wheel respectively mounted to the main shaft and located between the right and left frames; a right active shaft connected to the right frame and a right active wheel mounted to the right active shaft and located at an inner side of the right frame, a right belt connected between the right active wheel and the right passive wheel; a left active shaft connected to the left frame and a left active wheel mounted to the left active shaft and located at an inner side of the left frame, a left belt connected between the left active wheel and the left passive wheel; a resistance mechanism connected on the base and having a central passive wheel and a central belt connected between the central active wheel and the central passive wheel; a right link having a mediate portion thereof pivotably connected to the right active shaft and located at an outside of the right frame, one end of the right link connected to a right pedal and the other end of the right link being pivotably connected to a right swinging arm which is driven by the right pedal, and a left link having a mediate portion thereof pivotably connected to the left active shaft and located at an outside of the left frame, one end of the left link connected to a left pedal and the other end of the left link being pivotably connected to a left swinging arm which is driven by the left pedal.