Abstract: An exercise machine has a main frame and a user support frame pivotally mounted relative to the main frame for rotation between start and end positions. The user support frame supports spaced positions on a user's body throughout an exercise movement. A user engagement device is movably mounted relative to the frames and has at least one handle gripped by the user in performing exercises, and a connecting linkage translates movement of the user engagement device to rotational movement of the user support frame. A load resists movement of at least one of the user support, user engagement device, and connecting linkage. The user engagement device is at least partially non-rigid to allow a user to define the path of the handle and thus the type of back exercise performed.

Abstract: A leg press machine has a floor engaging main frame, a user support pivotally mounted relative to the main frame and having primary and secondary support portions which support spaced locations on a user's body throughout an exercise, and a leg press exercise arm rotatably mounted relative to the main frame. The exercise arm has a first pivot connection which pivotally links the exercise arm to the user support and a second pivot connection which is associated with the main frame to link movement of the exercise arm to movement of the user support. A load resists movement of at least one of the moving parts.

Abstract: A shoulder press exercise machine has a main frame, a user support frame movably mounted on the frame for supporting a user in an exercise ready position, at least one exercise arm movably mounted on one of the frames and movable between a start position in which handles are located in front of the shoulders of a user on the user support frame and an end position in which the handles are located above the head of the user. A connecting linkage connects movement of the exercise arm to movement of the user support frame, so that movement of the exercise arm from the start to the end position simultaneously moves the user support frame. A load resists movement of at least one of the moving parts of the machine. The combined motion of the user, user support frame and exercise arm between the start and end position substantially replicates the natural movement of the upper part of a human body when performing a free weight shoulder press exercise.

Abstract: An exercise machine for performing lat pull down exercises has a main frame having a user support pivot mount, a user support pivotally mounted on the user support pivot mount for supporting a user in a seated position, and an exercise arm having handles for gripping by a user movably mounted on the frame for movement between a start position located above the head of a user in a seated position on the user support and an end position lower than the start position and generally below the user's chin. A connecting linkage connects movement of the exercise arm to movement of the user support. A load resists movement of at least one of the moving parts of the machine. The combined motion of the user support frame and exercise arm substantially replicates the natural movement of the human body when performing a free bar chin up exercise.

Abstract: An arm exercise machine for performing isolation arm exercises has a self-aligning pivoting seat or user support on a main frame and an exercise arm for performing biceps curl and/or triceps extension exercises which is linked to the pivoting user support to translate movement of the exercise arm into movement of the user support. The user support is pivotally mounted on the main frame so as to automatically align in order to maintain positioning of the user throughout the exercise motion.

Abstract: A chest press exercise machine has a self-aligning pivoting user support on a main frame and an exercise arm which is linked to the pivoting user support to translate movement of the exercise arm into movement of the user support. A user support pivot pivotally connects the user support to the main frame. A connecting link is movably associated with the user engagement device or exercise arm and at least one of the main frame, user support, or user support pivot. A user-activated positioning device controls positioning of the exercise arm in an exercise ready position at the start of an exercise. The user support pivot is positioned so that part of the combined weight of the user and user support is positioned on both sides of the gravitational centerline throughout the exercise movement and a portion of the combined weight passes through the centerline to redistribute the weight as the exercise arm is moved.

Abstract: An isolation exercise machine for exercising one muscle group has a user support which is pivotally mounted on a main frame by a pivotal mounting system. A user engaging exercise arm is pivotally connected to the user support, and a connecting link links movement of the user exercise arm to movement in the user support. A load provides resistance to movement of the user support, exercise arm and/or connecting link. The pivotal mounting system is configured to place the user support seat in a relatively flat position in the rest or exercise start position and to recline and change the seat angle to an inclined position as the exercise arm is moved.

Abstract: A shoulder press exercise machine has a main frame, a user support pivotally mounted on the frame for supporting a user in a seated position, at least one exercise arm movably mounted on the frame and movable between a start position in which handles are located in front of the shoulders of a user on the user support frame and an end position in which the handles are located above the head of the user. A connecting linkage connects movement of the exercise arm to movement of the user support, so that movement of the exercise arm from the start to the end position simultaneously rotates the user support. A load resists movement of at least one of the moving parts of the machine. The combined motion of the user, user support frame and exercise arm between the start and end position substantially replicates the natural movement of the upper part of a human body when performing a free weight shoulder press exercise.

Abstract: An exercise arm assembly for mounting on an exercise machine frame has a main arm, a swing arm, and a handle. The main arm has a first end for pivoting on a frame of the machine to pivot about a first pivot axis. The swing arm has a first end pivoted to the second end of the main arm for pivoting about a second pivot axis. The handle is pivoted to the swing arm for pivoting about a third pivot axis, with each pivot axis being non-parallel to the other two pivot axes, and at least one pivot axis being non-perpendicular to the other two pivot axes.

Abstract: An improved trampoline-like belt for a treadmill includes an endless belt adapted to travel between end-supporting members. The belt is formed of a material which is resilient across at least a portion of its width to provide the resiliency necessary without springs to impart a trampoline-like sensation to a subject walking or running on the belt. The improved belt is designed for use with a treadmill where the belt is generally folded into parallel sections, the upper surface of which is adapted to form an exercising surface.

Abstract: A treadmill with an endless belt forming a movable surface to walk or run on. The novel supports for the endless belt suspend it from the periphery of its uppermost surface. Two large rollers within the endless belt suspend it and allow it to be moved longitudinally. Two banks of small rollers mounted along the top edges of the frame form the lateral supports. These rollers engage the edges of the endless belt to suspend it laterally within the exercise area.

Abstract: A treadmill with a trampoline-like surface provides a peripheral support which tensions the belt in both longitudinal and lateral directions using pairs of angularly oriented springs each pair extending from a roller bracket at an angle, of, e.g., forty-five degrees (45.degree.) to the lateral edge of the mat, connecting thereto at spaced apart positions. The spring support tensions the belt with both longitudinal and lateral (or transverse) load components.