Patent ID: 7563210

Claim:
A gyroscopic exercise device comprising: a pair of opposite handles for holding by upper or lower extremities of a user, both handles having interior cavities communicating with each other to accommodate a manual pull starter to cause a gyroscopic start; a gyroscopic movement unit between the handles having a precession rotor of a truncated and recessed sphere with an internal axle protruding at opposite directions and held to make a rotation about a spin axis extending perpendicular to the handles as well as a revolution about a precession axis extending centrally of the handles, an axle disc having internal openings to receive the axle of the rotor and a circumferential edge received in the racetrack for corotation with the axle, the rotor having a deep middle groove that circumferentially extends from its peripheral surfaces and terminates before the internal axle and a grip sleeve defines the depth of the middle groove and is provided with surfaces to positively engage at least part of the manual pull starter to initiate a high speed precession of the gyroscopic movement unit; a ring-shaped frame assembly having an outer ring member with an annular flange and a smaller inner ring member received in the flange of the outer ring member and fastened thereto, both ring members having opposing annular recesses for cooperatively holding the top and bottom halves of the racetrack of the gyroscopic movement unit; a spherical housing for protecting the gyroscopic movement unit from any physical contacts by the user or other external objects but permitting a view of gyroscopic movements of the unit from outside thereof; and a pair of truss members for fastening the handles to the frame assembly at two diametrically opposite locations from the inner and outer ring members.