Exercise device with drive handles
An exercise device including a frame with a first crank assembly rotatably coupled to the frame about a first axis and a second crank assembly rotatably coupled to the frame about a second axis. A control system may be used in communication with the first crank assembly and the second crank assembly, which may provide a synchronous movement of the first crank assembly relative to the second crank assembly. A pedal arm may be provided with a first end pivotally coupled to the first crank assembly and a pedal positioned on a second end. A crank link may be used with one end coupled to the second crank assembly and a second end coupled to the pedal arm. The crank link may be movable on the pedal arm which may provide varying paths of motion of the pedals.
1. An exercise device comprising:
a frame;
a first and a second crank system mounted on opposing sides of the frame adapted for positioning a user therebetween, each of the first and second crank system including a first crank assembly rotatable about a first axis and a second crank assembly rotatable about a second axis with the first and second axes being displaced from the other;
each of the first crank assemblies including a first crank arm and each of the second crank assemblies including a second crank arm;
a pair of synchronous control systems mechanically coupled to the pair of crank systems respectively, each synchronous control system of the pair of synchronous control systems being mechanically coupled to the first and second crank assemblies of the corresponding crank system in a configuration that allows for 360 degrees of synchronous rotation of the first and second crank assemblies, wherein each first crank arm of each first crank assembly rotates in the same direction as the second crank arm of each second crank assembly by the corresponding synchronous control system of the pair of synchronous control systems;
a pair of pedal arms respectively coupled to the first and second crank systems, each of the pair of pedal arms being pivotally coupled to the first crank arm of the first crank assembly at a location proximate to a first end of each pedal arm and being pivotally coupled to a pedal at a location proximate to a second end of each pedal arm;
a pair of drive handles mounted on opposing sides of the frame, each drive handle comprising a hand grip, a drive lever, and a handle link, each hand grip being mechanically attached at one of its ends to a location proximate to a first end of its corresponding drive lever, each drive lever being pivotally coupled to the frame at a location along its length and being pivotally coupled to its corresponding handle link at a location proximate to a second end of the drive lever, and each handle link being pivotally coupled to its corresponding drive lever at a location proximate to a first end of the handle link and being pivotally coupled to its corresponding pedal arm at a location proximate to a second end of the handle link;
a pair of crank links, each of the pair of crank links pivotally coupled at a location proximate to a first end to a respective one of the pedal arms and at a location proximate to a second end pivotally coupled to the second crank arm of the corresponding second crank assembly, wherein the pair of synchronous control systems are connected to each other by a drive shaft that is rotatably connected to the frame and providing mechanical communication between the first crank system and the second crank system, the drive shaft being rotatable about a third axis different from the first and second axes.