Abstract: The subject matter discloses an exercising device enabled to switch between elliptical course and circular course of footrests used by a user, comprising two main wheels, each connected to a different footrest; two connecting rods, the distal end of each connecting rod is connected to each main wheel and the proximal end of each connecting rod is connected to the body of the exercising device, said connecting rods are enabled to move the two main wheels on a horizontal axis.

Abstract: An apparatus permitting a user to perform a simulated bicycling exercise is provided. The design includes a horizontal base, a lower front pivoting point, and user supporting hardware collectively adjoining pedals, a seat configured to support the user, and handlebars, the user supporting hardware provided above the horizontal base and interfacing with the lower front mounting point. The lower front pivoting point and the user supporting hardware include a multiple component resistive element arrangement and collectively define an axis of rotation forming an angle with the horizontal base of 30 to 45 degrees, sloping upward in a rearward direction from the front pivoting point to the user supporting hardware. When the user is seated on the seat and leans in one direction, such leaning causes the user supporting hardware, seat, and handlebars to rotate in the one direction about the axis of rotation.

Abstract: An exercise bicycle including a frame supporting a flywheel. A magnetic brake assembly includes a brake arm pivotally mounted to the frame and including at least one magnet. The magnet is positioned adjacent to the flywheel and not in contact with the flywheel, the position of the magnet relative to the flywheel inducing a magnetic braking force on the flywheel. The pivot of the brake arm is positioned such that a pivot force vector induced on the brake arm by the magnetic braking acts to pivot the brake arm away from the flywheel.

Abstract: An exercise bicycle including a frame supporting a wheel such as a flywheel. A brake assembly (or resistance assembly) including a brake arm is pivotally coupled with the frame. The brake arm assembly includes a brake pad engaging the flywheel to alter the power needed to rotate the flywheel during exercise. A brake adjustment assembly is operably coupled with the brake arm. The adjustment assembly includes a shaft rotatably supported on the frame and mounted to be translated toward the flywheel while being restricted from translating away from the flywheel. A spring is positioned between the threaded shaft and the brake arm whereby rotation of the shaft increases or decreases compression of the spring thereby increasing or decreasing a frictional force between the brake pad and the flywheel.

Abstract: A bike trainer operable by a user for stationary riding when a conventional bicycle is coupled thereto. The bike trainer may be used by removing the rear wheel of the bicycle and selectively coupling the rear dropouts of the bicycle to an axle of the bike trainer. The bike trainer is operative to simulate the “feel” of riding a moving bicycle by providing resistance and inertia similar to that of a bicycle when used normally. To provide these features, the bike trainer includes a fan/flywheel as well as a freewheel mechanism. The bike trainer also includes features that permit simple coupling and decoupling to the bicycle using a “quick release skewer,” which allows users to easily use the bike trainer without required a substantial amount of time. The bike trainer also includes a base configured to support a user of the bike trainer in a fashion such that the user is sturdily supported during use.

Abstract: A muscle exercise device can include a crank having an axis of rotation. A first arm can be connected to the crank so that a downward external force applied to the distal end of the first arm causes rotation of the crank. The devices of the present invention can further include a second arm to which a counterweight is connected. Optionally, an assist mechanism other than a counterweight can be used to provide upward movement of the first arm with minimal application of force by a subject. A retrofit kit can be provided for modifying an existing device such as an ergometer or road bicycle. The retrofit kit can include a counterweight and a fastener for attaching to the device to the existing device. The devices of the present invention allow for increased exercise capacity, isolation of muscle groups, and biomechanical forces which closely approximate comparable paired limb motion.

Abstract: Provided is an early rehabilitation training system that increase the intensity of patient rehabilitation training to shorten the time it takes for patients to progress to a secondary rehabilitation training stage by allowing patients incapable of self-ambulation to be artificially rehabilitated in a prone, bed-ridden position. The system includes a treatment bed (2) configured with a mattress (2a), a base (2b) disposed below the mattress (2a) and coupled through a hinge to one end of the mattress (2a), and a tilting unit (2c) provided between the mattress (2a) and the base (2b) to adjust an upright angle of the mattress (2a); and a rotating unit (10) provided below the mattress (2a) of the treatment bed (2) to secure a patient's feet and provide artificial exercising of the patient's feet through gravity when the upright angle of the mattress (2a) is changed by the tilting unit (2c).

Abstract: An exercise apparatus comprises an exercise cycle having a pedal assembly configured to rotate and at least one flywheel. The pedal assembly is in an operative relationship with the flywheel such that rotating the pedal assembly causes the flywheel to rotate. The exercise cycle comprises a frame connected to the pedal assembly, the frame supporting a seat for a user. The exercise apparatus further comprises a base configured to support the exercise cycle and to dynamically tilt the exercise cycle to simulate cycling on an inclined surface. The base comprises a platform configured to support the frame of the exercise cycle. The base further comprises at least one actuator configured to support at least part of the platform, the at least one actuator connected to the platform and configured to dynamically tilt the platform during operation of the exercise cycle.

Abstract: An exercise bicycle including a body that supports a seat and handle bars. Supported by the body is a crank assembly. The crank assembly includes a shaft and crank arm that are variable in length.

Abstract: The present invention relates to a standup exercise apparatus that simulates walking and jogging with arm exercise. More particularly, the present invention relates to an exercise machine having separately supported pedals for the feet and arm exercise coordinated with the motion of the feet where the pedal stride length is determined by the movements of an operator. Adjustable tracks are provided to vary the orientation of the pedal path for different intensity exercise. Further, the exercise apparatus is less complex than previous user defined motion elliptical apparatus.

Abstract: A vertical exercise apparatus having a set of waist high support rails capable of supporting the users body weight for use in conditioning upper body and lower body muscle groups of person using the device.

Abstract: A mounting member is adapted for joining a seat back to a frame. The mounting member includes a base and an extension projecting from the base along an axis in absence of external forces to the extension. The extension has an end distant from the base that is connectable to the seat back and that is resiliently linearly movable in directions substantially perpendicular to the axis 360° about the axis.

Abstract: An exercise machine provides a total body workout by exercising the legs, back, shoulders, obliques and abdominal muscles. The machine's backrest rolls is in phase with the movement of the legs, allowing the body to sit in a position that is comfortable and secure. The spinal column is continually supported during the workout. Pedal movement powers the machine's electronics and maintains the battery's charge.

Abstract: An exercise machine suitable for exercising a person's muscles contains a frame (100Y), a seat (102) situated over the frame, a seatback (104), a connection mechanism (106Y) for flexibly and adjustably connecting the seatback to the frame or/and the seat, and a pedaling mechanism (112Y) connectable to the frame and having a pair of movable foot pedals (140). The connection mechanism includes (a) a seatback-attaching portion (120, 180, 184, 186, 188, and 190) attached to the seatback and (b) a support rod (128Y) extending between the seatback-attaching portion and a location within the frame. The support rod is of adjustable length for adjusting the incline of the seatback to the seat. The seatback can swivel about a swivel axis of the connection mechanism. The exercise machine normally has a pair of frame legs (302).

Abstract: A dual action recumbent exercise cycle which provides upper body, lower body and cardiovascular conditioning with emphasis directed toward the needs of obese individuals as well as individuals with equilibrium issues such as Parkinson's Disease, Multiple Sclerosis and Stroke. The apparatus includes a multi-configurable seat which is horizontally displaced from the foot pedal and handlebar assemblies. A vaned wheel rotatably mounted on the frame and arranged to absorb energy by movement of the broad surfaces of the vanes against the surrounding body of air. A derailleur mechanism is provided for additional options of resistance intensity. Rotation of the wheel is effected through a pair of foot pedals and connected chain and sprocket/hub mechanism and/or through a pair of handlebar assemblies. The handlebar assemblies each include a pivotal spring housing mechanism which enables the handlebars to be both retractable and variable in their positioning to the user.

Abstract: An apparatus permitting a user to perform a simulated bicycling exercise is provided. The design includes a frame and a first (lower front) mounting point including a multiple element distributed load arrangement and a second (upper rear) mounting point configured to maintain the frame a first lower front mounting point including a pin defining an axis substantially representing a line joining the second upper rear mounting point and the first lower front mounting point. The design includes a seat, a wheel, and pedals, and the frame is configured to pivot about the axis in response to leaning by the user. Handlebars may be provided that enable force application and enhance the leaning or pivoting in the bicycle riding simulation experience.

Abstract: An exercise machine includes a frame, a saddle, at least one crank arm, at least one pedal, a force measurement, an angle detector, a processor, and an adjustment mechanism. The saddle is connected to the frame. The crank arm is pivotally connected to the frame, and the pedal is pivotally connected to the crank arm. The force measurement measures a force applied to the crank arm, and the angle detector detects a crank arm angle. The processor is programmed to calculating a work value according to the force and the crank arm angle. The feedback mechanism returns the work value to a user.

Abstract: A support for a bicycle includes a front unit, a rear adjust unit, a front roller unit, a rear roller unit and a connection unit. Different sizes of bicycles can be connected to the support. The rear adjust unit, the front roller unit and the rear roller unit are adjustable to obtain different operation modes. The support is equipped with sensing system to be cooperated with software and hardware so as to perform as a video game.

Abstract: A recumbent stepper includes a frame, a pair of lever arms, pedals, pulleys, flexible members, springs and adjustable resistance devices The pair of lever arms are pivotally attached to the frame and are movable from a retracted position to an extended position. Pedals are attached to each lever arm. The pair of pulleys are rotatably attached to the frame. The pair of flexible members are attached between the lever arms and pulleys and are wound around the pulley when the lever arm is in the retracted position and deploys as the lever arm moves to the extended position. Springs are operably attached to each pulley such that each lever arm is biased to the retracted position. Adjustable resistance devices are operably connected to each pulleys whereby increasing the resistance on the pulley increases the force required to move the lever from the retracted position toward the extended position.

Abstract: A sensing apparatus for use in combination with a stationary bicycle comprises a housing that supports a source of emitted radiation and a detector of radiation of the same wavelength as that emitted by the source, fixing means for fixing the housing to an exercise device such that radiation is emitted towards a region of space that can be occupied by a part of a body of a user of the exercise device and selectively transmitted on to the detector depending on whether a part of a user's body is located within the space, a processor which measures at least one property of the radiation from the source that is passed to the detector and from the measured property produces an output signal indicative of the proximity of the user relative to the device within that space.

Abstract: A stationary exercise bicycle including a base frame, a seat supporting assembly, a seat assembly being movably mounted on the seat supporting assembly to be guided along a path inclined at a selected angle related to the ground surface. The stationary exercise bicycle further comprises an assistance member attached to the seat assembly for providing an elevation force for a seat position adjustment. The present invention provides a stationary exercise bicycle with a benefit of quick, easy and convenient seat position adjustment, a benefit of grabbing a heart rate grip or touching a control console comfortably, a benefit of reducing abdomen compression of a user, and a benefit of an elevation force for assisting a seat position adjustment.

Abstract: A portable stationary bicycle trainer comprises a main frame having a top end and a bottom end and having handlebars attached to the top end thereof. A support member having a first end and a second end is connected at its first end to the main frame. A plurality of pedals are rotatably engaged to the main frame at a position adjacent to the first end of the support member. An arcuately shaped base having varied topography that simulates outdoor variable-grade terrain is connected to the bottom end of the main frame and the second end of the support member. The portable stationary bicycle trainer simultaneously provides the user with leg exercise and core muscle strength training.

Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. Some embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion. Other aspects of the present invention relate to a releasable connection mechanism that can be used to selectively and/or automatically limit or eliminate the variable stride feature of an exercise device.

Abstract: An exercise device includes one or more foot supports movable along an arcuate path defined around a point of rotation. The arcuate path is divisible into machine defined user selectable arc segments and the movement of the foot support(s) is limited to the machine defined user selected arc segment. The exercise device can include a frame, a linkage movably engaged with the frame, a foot support movably engaged with the linkage, a crank arm movably engaged with the frame, a motor operative to move the crank arm location with respect to the frame, and a drive linkage movably engaging the linkage.

Abstract: A portable stationary bicycle trainer comprises a main frame having a top end and a bottom end and having handlebars attached to the top end thereof. A support member having a first end and a second end is connected at its first end to the main frame. A plurality of pedals is rotatably engaged to the main frame at a position adjacent to the first end of the support member. An arcuately shaped base having varied topography that simulates outdoor variable-grade terrain is connected to the bottom end of the main frame and the second end of the support member. The portable stationary bicycle trainer simultaneously provides the user with leg exercise and core muscle strength training.

Abstract: A novel stationary exercise bicycle and method for exercising on that bicycle is disclosed. The novel bicycle, comprising a frame having front and rear sockets, a seat mounted into the rear socket, and a handlebar mounted in the front socket, can advantageously be adjusted so that a rider can adopt different riding positions to simulate outdoor bicycle riding conditions.

Abstract: Several embodiment of an exercycle which is suspended by floatation devices just below the surface of the water, requires the user to exercise both upper and lower body portions to work the cycle while maintaining balance in the water. The aquatic equilibrium cycle can be used for muscle toning, physical therapy or competition. Some embodiments employ a foot pedal having hinged wings which produce an octopus-type propulsion to move the cycle in a forward direction. Some embodiments allow the adjustment of the magnitude of floatation force to accommodate the body size of the particular end user.

Abstract: An exercise bike for rehabilitation includes a frame, on which a first exercise module designed for training hands, a second exercise module designed for training feet, and a damping device to provide the first and second exercise modules loadings are provided. The first and second exercise modules each has two opposite one-way clutches that user may use to independently train his/her hand or feet without interference.

Abstract: An exercise machine includes a base, an axle rotationally supported on the base and two cranks connected to the axle. The cranks are rotational synchronously with the axle. A drive wheel unit includes an active wheel provided on the axle so that the active wheel is rotational synchronously with the cranks. A passive wheel unit includes a load wheel supported on the axle so that the load wheel is rotational relative to the axle and a passive connected to the load wheel so that the passive wheel is rotational synchronously with the load wheel. A step-up device includes a shaft rotationally supported on the base and small and large wheels connected to the shaft so that they are rotational synchronously. The small wheel is connected to the active wheel so that they are rotational together. The large wheel is connected to the passive wheel so that they are rotational together.

Abstract: A multimode exercise device, including: a chassis with two opposing elongated sides; an exercise mechanism mounted onto the chassis comprising on each side of the chassis: a slidable assembly that is configured to move backward and forward along one elongated side of the chassis; a rotatable wheel configured to rotate about an axis at its center and mounted onto the slidable assembly; a pedal coupled to the rotatable wheel configured to rotate the rotatable wheel; a restraining rod that is rotatably coupled to a side of the chassis on a first end and rotatably coupled to the rotatable wheel at one of a plurality of user selectable attachment positions on the second end; a synchronizing mechanism to synchronize between the rotations of the rotatable wheels on both sides of the chassis.

Abstract: Devices, methods and systems for strength training directed at improving a bicyclist's performance. The training device includes a cycle frame, a seat and a set of handlebars and a crank arm assembly attached to the frame. The training device also includes a means for selecting an amount of resistance to rotational motion of the crank arm assembly. In use, a user advances the pedals and crank arms by pedaling against the selected resistance through a selected training arc, then returns the crank arms to the starting position, against negative resistance, and repeats the extension/retraction motion according to the strengthening protocol in use. The user then selects a second training arc and repeats the sequence of rotation against resistance and counter-rotation against negative resistance.

Abstract: A vehicle simulation system equipped to display information on the rear side of a driver (rider). The simulation system includes a dummy bicycle operated by the rider, a monitor on the front side for displaying a scene based on the operations of the dummy bicycle, and a lamp unit connected to the dummy bicycle and provided on the rear side relative to the seated position of the rider. The lamp unit has a red lamp, a yellow lamp and a green lamp, and is controlledly turned ON under the action of a main control unit. An input device is provided on a steering handle of the dummy bicycle. The input device has a switch for red, a switch for yellow, and a switch for green. The rider checks behind, and operates the input device according to the ON/OFF conditions of the lamp unit.

Abstract: A rotational bearing has an outer surface and an outer layer attached to the outer surface of the bearing by overmolding, bonding or mechanical fasteners. The outer layer has an outer surface which rotatably engages a bearing surface of a track along which the bearing device is adapted to travel, and is of a material softer than the material of the track bearing surface, such as a polymer or a relatively soft metal. In one example, the bearing is rotatably attached to a foot link carrying a foot engaging platform of a human powered conveyance or exercise system.

Abstract: An exercise machine includes a frame with foot pedals mounted thereon and a seat having an inflatable bladder whereby the user may undertake a cardiovascular workout and a core workout of abdominal and back muscles. A sensor may be used to sense the degree of compression of the inflatable bladder when a person sits on the inflatable seat whereby the internal pressure of the bladder may be adjusted accordingly. The frame may have two sections which are detachable so that one of the sections and the inflatable seat serve as a seating assembly when detached.

Abstract: A static cycling machine includes a support assembly and a drive assembly. A frame assembly is mounted on the support assembly. The frame assembly includes a seat tube assembly extending from the drive assembly, the seat tube assembly being adjustable in length. A down tube assembly extends from the drive assembly, the down tube assembly being adjustable in length. A handlebar assembly is mounted on the down tube assembly. A fork assembly is connected to the handlebar assembly and is adjustable in length. The seat tube, down tube, handlebar and fork assemblies are connected to each other such that at least the dimensions of the frame assembly can be adjusted by adjusting the lengths of the tube assemblies. A driven wheel assembly is operatively connected to the drive assembly so that work applied to the drive assembly can be transmitted to the wheel assembly. Actuators are operatively engaged with the frame assembly to adjust dimensions of the frame assembly.

Abstract: An exercise apparatus includes a frame for residing on a horizontal surface, a pair of arm-supporting members for supporting the user's arms and a pair of leg-supporting members for supporting the user's legs. A linkage assembly couples the arm-supporting members and leg-supporting members to the frame and moves the arm-supporting members and leg-supporting members in closed paths relative to the frame in response to user forces applied to the arm-supporting members and leg-supporting members. The linkage assembly includes actuators for adjusting dimensions of the closed paths in response to control signal inputs. Sensors mounted on the linkage assembly generate force-indicating signals representing one or more of the user force. A user interface receives and processes the force-indicating signals and supplies the control signal inputs to the actuators, wherein a dimension of at least one of the closed paths is a function of at least one of the forces applied to the leg and arm-supporting members.

Abstract: A mechatronic exercise system, e.g., for rehabilitation, having instrumented handle and pedal systems and, preferably, an interactive virtual environment is disclosed. Alternatively, the instrumented handle and pedal systems are part of a virtual reality augmenting kit that can convert most types of exercise equipment, such as a stationary or exercise bicycle, ergometer, rowing machine or the like, into full virtual reality (VR) smart systems. In another embodiment, the instrumented handle and pedal systems can each be used separately with other types of devices. In a preferred embodiment, components embedded with sensors are implemented, e.g., on a stationary, exercise bicycle to monitor physiological and biomechanical parameters of the user. Signal data from the sensing components is used to immerse the user in a VR simulation so as to provide the user with visual, auditory, and haptic feedback to the user's performance.

Abstract: Described are several mechanisms for permitting a user to adjust the seat on a stationary exercise bicycle. The described mechanisms can be used to adjust the height of the seat or the fore and aft positioning of the seat on an upright type bicycle. Each of the described mechanisms can be configured to provide users with an optimum seat position and with a convenient latch mechanism to adjust the position of the seat.

Abstract: In an elliptical step exercise apparatus a dynamic link mechanism can be used to vary the stride length of the machine. A control system can also be used to vary stride length as a function of various exercise and operating parameters such as speed and direction as well as varying stride length as a part of a preprogrammed exercise routine such as a hill or interval training program. In addition the control system can use measurements of stride length to optimize operation of the apparatus.

Abstract: An exercise apparatus comprises: a frame having a base portion and having first and second right support elements and first and second left support elements; a crank system comprising first and second crank coupling locations, the crank system being supported by the frame; a right foot support member; a left foot support member; a right guide element coupled to the right foot support member and; a left guide element coupled to the left foot support member; a first flexible support system comprising a first flexible element, the first flexible element coupled to the first and second right support elements and the right guide element and coupled to the first crank coupling location; and a second flexible support system comprising a second flexible element, the second flexible element coupled to the first and second left support elements and the left guide element and coupled to the second crank coupling location, wherein alternating motion of the right and left foot support members causes the first and second c

Abstract: The invention pertains to a stationary exercise bike along with a display that provides instruction to lead a rider through an exercise program. The invention allows a rider to obtain benefits of a group, instructor-led class though the rider's schedule does not permit the rider to participate in the class. The invention also describes a method of exercising with the foregoing bike and display.

Abstract: An exercise device including at least one positionable component configured to be positioned by a user. The exercise device includes a frame to which a collar is mounted. The positionable component includes a member slidably received within the collar that may be positioned therein by sliding. A locking assembly is coupled to the collar and operable to lock the member in a selected position within the collar, release the member from the locked position, and when released, allow the member to slide within the collar. The locking assembly includes a cam pivotably mounted to the collar and a cam follower assembly selectively biased by the cam against a portion of the member disposed inside the collar. The locking assembly also includes a pair of engagement members disposed inside the collar opposite the cam. The engagement members are moveable relative to one another and biased by the cam against member.

Abstract: An apparatus permitting a user to perform a simulated bicycling exercise is provided. The design includes a frame and a first mounting point and a second mounting point configured to maintain the frame. A seat is connected to the frame and configured to support the user. A wheel is positioned in association with said frame and pedals configured to interact with the wheel, and the frame is configured to pivot about the first mounting point and second mounting point in response to leaning by the user. Handlebars may be provided that enable further force application and enhance the leaning or pivoting in the bicycle riding simulation experience.

Abstract: The present invention relates to a sit down exercise apparatus operated in a chair position where foot operated pedals and arm operated handles follow oblong paths. More particularly, the present invention relates to an exercise machine having separately supported pedals for the feet and arm exercise coordinated with motion of the feet. The foot pedals fold away from the operator to allow easy ingress and egress as well as arm exercise only. The handles for arm exercise fold away from the operator for foot only exercise and easy stowage. The exercise apparatus is wheelchair friendly and has a security connector to prevent tipback during operation. Arm exercise can passively exercise the feet or foot exercise can passively exercise the arms.

Abstract: A seated row exercise system including an exercise cycle assembly that detachably connects to a chair frame of a chair; and, an elongated support assembly. The exercise cycle assembly includes a main frame having a first end portion detachably connectable to a frame element of a chair frame, the main frame including a plurality of support legs for supporting the exercise cycle assembly relative to the floor; and, a pedal assembly securely connected to the main frame. The elongated support assembly includes a substantially vertical support member secured to the main frame; and, a pulley housing assembly attached to the vertical support member for supporting a cable assembly.

Abstract: An exercise apparatus comprises: a frame; a crank system comprising first and second crank system coupling locations, the crank system being supported by the frame; a right foot support member; a left foot support member; a first flexible support system comprising a first flexible element, the first flexible element coupled to the right foot support member and the first crank coupling location; and a second flexible support system comprising a second flexible element, the second flexible element coupled to the left foot support member and coupled to the second crank coupling location, and an adjustment assembly, wherein the user of the exercise apparatus may undertake a stepping motion or an instantaneously variable striding motion, and wherein the structural geometry of the exercise apparatus can be changed with operation of the adjustment assembly.

Abstract: The subject matter discloses a bicycle device capable of functioning as an upright bicycle and a recumbent bicycle using one seat. The bicycle device according may comprise a seat, a body, a wheel operated by the user of the exercising device and a directing rod connecting the body and the seat. Such that movement of the directing rod allows positioning the seat in front position used for upright bicycle and rear position used for recumbent bicycle.

Abstract: A cyclical skating motion exercise machine has a base frame assembly. A first pedal arm mounted on a first pedal axle, wherein the first pedal axle is substantially vertical. A first link assembly mounted to the first pedal arm at a first pedal joint. The first pedal joint provides motion between the first link assembly and the first pedal arm. A first pedal mounted to the first pedal arm for supporting a user's foot. A second pedal arm is mounted on a second pedal axle, wherein the second pedal axle is substantially vertical. A crank assembly has a first link assembly is mounted to the crank assembly, and the crank assembly has rotational inertia is substantially orthogonally to the first pedal axle.

Abstract: A track-adjusting method and a track-adjusting mechanism are applicable to an elliptical exercise apparatus using a linkage system to generate a cyclic exercise track. The track-adjusting method and the track-adjusting mechanism provide the elliptical exercise apparatus with additional exercise tracks by displacing at least one set of horizontally symmetrical pivotal joints in the linkage system, so as to allow diverse training programs and improved exercise effects.

Abstract: A stationary exercise device includes a frame member having a transverse pivot axis. A first and a second foot tread member are operatively associated with a coupling member for pivotally coupling the first end of each foot tread member to the a respective pivot axis at a predetermined distance from the pivot axis, so that each foot tread member first end travels in an arcuate path about the pivot axis. Each foot tread member moves independently of the other foot tread member. Each foot tread member second end is operatively associated with a glide member for moveable coupling of the second end of each foot tread member to a support surface. The glide members direct each foot tread member second end along a reciprocating path of travel, as each foot tread member first end travels in an arcuate path.