Abstract: An exercise device featuring a pair of knee joints, each pivotally and respectively coupled to a pair of calf linkages, each of the pair of calf linkages having a foot pedal at an opposite lower end that supports low impact user-defined natural exercise gait patterns. The knee joints are supported and directed to travel by linkage and/or carriage systems that operate substantially below a user hip area and direct the knee joints in a variety of travel paths, ranging from a constant arc, a linear pathway, to a variety of irregular arc shaped paths to pathways that may change during use. A secondary system coupled to the linkage and/or carriage systems provides lift and dampening forces to influence a responsiveness of the foot pedals via bending and straightening of the calf linkage about the respective knee joint, yet does not restrict back and forth travel of the respective knee joint.

Abstract: An exercise device with a pair of upper links coupled to a frame and a pair of lower links pivotally and respectively coupled to the upper links is provided. A pedal is received on a distal end of each of the lower links. A transfer system between the pair of upper links may include a first and a second pushrod, each with a first end pivotally coupled to each respective upper link and a second end opposite to the first end. A first and a second damper arm, each pivotally coupled to the frame, may be included, each damper arm receiving a respective pushrod. An actuator may be coupled to the first damper arm and the second damper arm, thus providing movement of the first and second pushrods to alter a resting position of the first and second upper leg links with respect to the frame.

Abstract: An exercise device with a pair of upper links coupled to the frame and a pair of lower links pivotally coupled to the upper links is provided. A pair of pedals is received on a distal end of each of the lower links. A transfer system between the pair of upper links may include a first and a second pushrod, each with a first end pivotally coupled to each upper link and a second end opposite to the first end. A first and a second pivot arm, each pivotally coupled to the frame, may be included, each pivot arm receiving a respective pushrod. A pliable connector may be coupled to the first pivot arm and the second pivot arm, thus providing compliant reciprocating movement of the upper links.