Abstract: An exercise apparatus has a linkage assembly which links rotation of a crank to generally elliptical movement of a force receiving member. The linkage assembly includes a flexible drawbar interconnected between the crank and frame of the exercise apparatus.

Abstract: An exercise apparatus has a linkage assembly which links rotation of an adjustable length crank to generally elliptical movement of a force receiving member. The linkage assembly includes a first link having a rearward end which is rotatably connected to the crank, and a forward end which is rotatably connected to a lower end of a suspended link. An upper portion of the suspended link is rotatably connected to the exercise apparatus frame.

Abstract: Various linkage arrangements link rotation of left and right cranks to movement of left and right foot supports through generally elliptical paths. The linkage arrangements may also link rotation of the cranks to reciprocal movement of left and right handles. Also, connection points defined by the linkage arrangements may be moved relative to one another and/or a supporting frame to adjust the size, shape, and/or orientation of the elliptical paths.

Abstract: Various linkage arrangements link rotation of left and right cranks to movement of left and right foot supports through generally elliptical paths. The linkage arrangements may also link rotation of the cranks to reciprocal movement of left and right handles. Also, connection points defined by the linkage arrangements may be moved relative to one another and/or a supporting frame to adjust the size, shape, and/or orientation of the elliptical paths.

Abstract: An abdominal exercise device includes a frame, and upper and lower force receiving members movably mounted on respective portions of the frame and constrained to move in opposite directions. A person using the device is required to stabilize the device while seated on a conventional chair. A resistance device is interconnected between the frame and at least one of the force receiving members to resist movement of the members toward one another and/or to bias the members away from one another. The lower member is configured to support a person's feet, and the upper member is configured to support a person's hands and/or to engage a person's chest. The device facilitates a combination crunch and leg lift exercise that involves both a person's upper abdominal muscles and a person's lower abdominal muscles, and additional options are available to exercise a person's oblique muscles, as well.

Abstract: An exercise device includes a frame, a foot support mounted on the frame, and a body supporting linkage mounted on the frame. The linkage includes a seat, a lower back support, and an upper back and head support. Also, a handlebar is preferably mounted on the upper back and head support. The linkage is movably mounted on the frame in a manner that comfortably supports a person during both a leg press exercise and an abdominal crunch exercise. A resistance device is interconnected between the linkage and the frame to provide resistance to each type of exercise.

Abstract: An elliptical motion rowing machine includes a frame, a linkage assembly movably mounted on the frame in such a manner that a portion of the linkage assembly moves through an elliptical path, and a seat mounted on that portion. A foot platform is preferably provided to support a person's feet, and handlebars are preferably provided to support a person's hands. The handlebars may be movably mounted on the frame, and may also be connected to the linkage assembly for synchronized movement with the seat.

Abstract: An exercise apparatus includes left and right support members movably connected to a frame, left and right force receiving members mounted on respective support members for movement along the support members without rotating relative to the support members, and left and right cranks rotatably mounted on the frame and linked to respective support members and respective force receiving members in a manner that constrains the force receiving members to move through respective elliptical paths in response to rotation of the cranks.

Abstract: An exercise apparatus has arm driven members and leg driven members which are movably mounted on a frame. In a first mode of operation, the arm driven members are movable relative to the frame and the leg driven members. In a second mode of operation, the arm driven members are linked to the leg driven members and movable together therewith relative to the frame. In a third mode of operation, the arm driven members are locked against movement relative to the frame in a manner which does not interfere with movement of the leg driven members. In a preferred embodiment, the leg driven members are movable in two generally orthogonal directions relative to the frame. The leg driven members may also be interconnected to move in reciprocal fashion in either and/or both of those directions, and/or supported in a manner that provides progressive resistance to downward movement as a function of downward travel.