Patent ID: 7115072
Filing Date: 2006-10-03
Classification: A63B

Abstract:
1. Apparatus for resisting motion comprising: a framework having spaced apart, first and second sides; a sun pulley fixedly mounted to said first side; a rotably adjustable pulley mounted on said second side opposite said sun pulley; a load torque shaft fixed to said adjustable pulley; an input torque shaft positioned coaxial with said fixed sun pulley and with said load torque shaft and being rotable relative to said fixed sun pulley; a user crank arm fixed to an outer end of said input torque shaft; an arm having a first end fixed to said input torque shaft and a second end mounting a planetary shaft which extends transversely of said arm and parallel to an axis of said input torque shaft; a first planetary pulley fixedly mounted on said planetary shaft in alignment with said fixed sun pulley; a second planetary pulley fixedly mounted on said planetary shaft in alignment with said adjustable pulley; a first belt or chain trained over said sun pulley and said first planetary pulley; and a second belt or chain trained over said adjustable pulley and said second planetary pulley, whereby placement of a torque on said load torque shaft fixed to said adjustable pulley will place tension on one length of said first belt or chain and tension on the other length of said second belt or chain thereby to establish friction between adjacent moving parts throughout the apparatus thereby to establish resistance to rotary movement of the input torque shaft with the amount of resistance being dependent on the amount of torque placed on said load torque shaft.