Patent ID: 7029426
Filing Date: 2006-04-18
Classification: A63B

Abstract:
1. An exercise machine for conditioning athletes, comprising: a frame having a generally rectangular base portion for supporting the frame on a flat surface and having forward and rearward ends, an inclined platform at the rearward end of the base portion upon which a user may stand, a pair of parallel laterally spaced vertical members near the forward end of said base portion, and a pair of laterally spaced upright members on the base portion between the foot platform and the vertical members; a weight arm pivotally mounted at one end to said upright members on a horizontal axis and extending forwardly therefrom and having weight receiving means at its outer end for receiving a selected number of weights to be lifted; an elongate lift arm pivotally mounted at one end to said vertical members on a horizontal axis and extending angularly upward and outward therefrom toward said platform, laterally spaced shoulder pads on an outer end portion thereof, and laterally spaced hand grip means on said outer end portion adjacent to said shoulder pads, said outer end portion being positionable at selective distances above said platform; a horizontal shaft rotatably mounted at an upper end of said vertical members and extending outwardly to each side thereof, an upper central sprocket secured at the center of said shaft and a pair of second sprockets secured one on each outer end of said shaft; a lower central sprocket rotatably mounted on said frame adjacent to a lower end of said laterally spaced upright members; a first chain secured at a first end on said upper central sprocket and wrapped around a segment thereof and a segment of said lower central sprocket and secured at a second end to said lift arm; a pair of second chains each secured at a first end to a respective one of said second sprockets and wrapped around a segment thereof and secured at a second end to said weight arm; said first chain and said second chains being wrapped in opposite directions around said upper central sprocket and said second sprockets, respectively; and said lift arm when pivoted upward by an upward force on its said outer end portion pulls said first chain to cause rotation of said upper central sprocket and said horizontal shaft and said second sprockets at its outer ends to simultaneously cause said second chains to pull upward on said weight arm to pivot it upward with the weights at the outer ends thereof resisting the upward force applied to said outer end portion of said lift arm.