Patent Application
20060189445
The present invention relates to exercise equipment.
The benefits of regular aerobic exercise are well established. However, due to time constraints, inclement weather, and other reasons, many people are prevented from aerobic activities such as walking, jogging, running, and swimming. In response, a variety of exercise equipment has been developed for aerobic activity. It is generally desirable to exercise a large number of different muscles over a significantly large range of motion so as to provide for balanced physical development, to maximize muscle length and flexibility, and to achieve optimum levels of aerobic exercise. It is further advantageous for exercise equipment to provide smooth and natural motion, thus avoiding significant jarring and straining that can damage both muscles and joints.
While various exercise systems are known in the prior art, these systems suffer from a variety of shortcomings that limit their benefits and/or include unnecessary risks and undesirable features. For example, stationary bicycles are a popular exercise system in the prior art; however, these machines employ a sitting position that utilizes only a relatively small number of muscles, through a fairly limited range of motion. Cross-country skiing devices are also utilized to simulate the gliding motion of cross-country skiing. While cross-country skiing devices exercise more muscles than stationary bicycles, the substantially flat shuffling foot motion provided by the ski devices limits the range of motion of some of the muscles being exercised. Another type of exercise device simulates stair climbing. These devices exercise more muscles than stationary bicycles; however, the rather limited range of up-and-down motion utilized does not exercise the user's leg muscles through a large range of motion. Treadmills are still a further type of exercise device in the prior art. Treadmills allow natural walking or jogging motions in a relatively limited area. A drawback of the treadmill, however, is that significant jarring of the hip, knee, ankle and other joints of the body may occur through use of this device.
A further limitation of a majority of exercise systems in the prior art lies in the limits in the types of motions that they can produce. A relatively new class of exercise devices are capable of producing elliptical motion. Exercise systems create elliptical motion, as referred to herein, when the path traveled by a user's feet while using the exercise system follows an arcuate or ellipse-shaped path of travel. Elliptical motion is much more natural and analogous to running, jogging, walking, etc., than the linear-type, back and forth motions produced by some prior art exercise equipment.
Exercise devices that can provide arm and shoulder motions as well as elliptical foot motions are also desirable. Prior art devices utilize arm and shoulder motions that are linked to foot motions. These linked devices incorporate forced coordinated motion, where the motions of a user's feet are linked to the motions of a user's arms and shoulders. Thus, the user's feet are forced to move in response to the movement of the user's arms and shoulders (in substantially an equal and opposite amount), and vice versa. One drawback to these linked devices lies in the desire of certain users to utilize the foot motions without a corresponding utilization of the arm apparatuses. Because the arm apparatuses travel through a given path regardless of whether the user is exerting any force on the arm due to the force being exerted on the foot links, even where the arm apparatuses are not engaged the arm apparatuses continue in motion. This is at least bothersome to the user as these arm apparatuses are contained within close proximity to the user's body and reciprocate at a somewhat high rate of speed. One prior art device seeks to disable the arm apparatus altogether, however, this device suffers from the drawbacks of complexity of use and the need for the user or a technician to adjust the arm apparatus to either the enabled or disabled setting prior to and following use by a user.
What would thus be desirable is an exercise device that provides for smooth natural action, exercises a relatively large number of muscles through a large range of elliptical motion, employs arm, shoulder, and rotational movement, and provides for safety and stability. Such an exercise device would further allow a user to easily and efficiently choose to use or not to use the arm apparatus.
An exercise device in accordance with the principles of the present invention provides for smooth natural action, exercises a relatively large number of muscles through a large range of elliptical motion, employs arm, shoulder, and rotational movement, and provides for safety and stability. An exercise device in accordance with the principles of the present invention allows a user to easily and efficiently choose to use or not to use and efficiently stow the arm apparatus.
In accordance with the present invention, an exercise device is provided having a frame defining a longitudinal axis, the frame having a rearward portion and a forward portion. A foot link includes a rearward portion that is constrained to move in an orbital path approximately parallel to the longitudinal axis and a forward portion that reciprocally engages the guide track. A swing arm is a pivotally connected to the frame, the swing arm having an upper portion extending above the pivotal connection and a lower portion disposed below the pivotal connection. An engagement mechanism having a first portion coupled to the lower portion of the swing arm and a second portion coupled to the forward portion of the foot link, such that a rearward force applied to the upper portion of the swing arm will produce a force on the forward portion of the foot link having a downward component. An arm enabling/disabling mechanism is positioned on the elongate swing arm below the pivotal connection. The arm enabling/disabling mechanism can be effectuated by a user without the user interrupting exercise.
The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same become better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
While an exemplary embodiment of the invention has been illustrated and described, it will be appreciated that various changes can be made therein without departing from the spirit and scope of the invention.
The forward portions 62, 72 of the foot links 60, 70 preferably are supported by rollers 68, 78, which engage guide tracks 42, 52 that are mounted to the frame 12. In one embodiment of the present invention, the guide tracks can be statically mounted to the frame 12. In an alternative embodiment, the guide tracks can incorporate a mechanism such as a motor (not shown) and a lead screw (not shown) for selectively adjusting the inclination of the guide tracks. The forward portions 62, 72 of the foot links 60, 70 are operatively connected to engagement assemblies 100, 110, which in turn are operatively connected to the coupling regions 86, 96 of left and right swing arm mechanisms 80, 90, respectively. The swing arm mechanisms 80, 90 are rotatably connected to the forward upright member 20 of the frame 12 at their respective pivot points 84, 94. The swing arm mechanisms 80, 90 further contain left and right hand-gripping portions 82, 92. Each engagement assembly 100, 110 includes an abutment arm 106, 116, and a curved attachment link 104, 114, which together prevent the derailment of the foot link rollers 68, 78 from the guide tracks 42, 52.
More particularly, the frame 12 includes the longitudinal central member 14 that terminates at forward and rearward portion portions 16, 18. Preferably, the forward portion 16 of the frame 12 simply terminates at the end of the longitudinal central member 14, while the rearward portion 18 terminates as a relatively shorter transverse member. Ideally, but not essentially, the frame 12 is composed of tubular members that are relatively light in weight but that provide substantial strength and rigidity. The frame 12 may also be composed of solid members that provide the requisite strength and rigidity while maintaining a relatively lightweight.
The forward upright member 20 extends upwardly and slightly rearwardly from the forward portion 16 of the floor-engaging frame 12. Preferably, the upright member 20 is slightly rearwardly curved; however, the forward member 20 may be configured at other upward angles without departing from the scope of the present invention. A relatively short, transversely oriented crossbar member 22 is connected to the forward upright member 20. Left and right balance arms 24, 26 depend downwardly from each end of the crossbar member 22 to engage the floor on each side of the longitudinal central member 14 near the forward portion of the exercise device 10, thereby increasing stability. Ideally, but not essentially, these members are composed of a material similar to that described above, and are formed in quasi-circular tubular configurations.
Preferably, a view screen 28 is securely connected to the upper portion of the forward upright member 20, at an orientation that is easily viewable to a user of the device 10. Instructions for operating the device as well as courses being traveled may be located on the view screen 24 in an exemplary embodiment. In some embodiments of the present invention, electronic devices may be incorporated into the exerciser device 10 such as timers, odometers, speedometers, heart rate indicators, energy expenditure recorders, controllers, etc. This information may be routed to the view screen 28 for ease of viewing for a user of the device 10.
In the exemplary embodiment shown in
Referring again to the exemplary embodiment shown in
The elliptical motion exerciser 10 further contains longitudinally extending left and right foot links 60, 70. As shown in
Left and right crank arm assemblies 40, 50 couple the rearward portions 64, 74 of the foot links 60, 70 to the ends of the transverse axle 34. In one embodiment of the present invention shown in
In an alternate embodiment of the present invention the rearward portions 64, 74 of the foot links 60, 70 are rotationally connected directly to a flywheel which functions to couple the foot links 60, 70 to a pivot axis (equivalent to the axis of the transverse axle 34) and permit rotation thereabout. In this embodiment, the flywheel is preferably a double flywheel that supports rotation about a central axis. Various mechanical arrangements may be employed to embody the crank arm assemblies 40, 50 in operatively connecting the foot links 60, 70 to each other. Such variations may include a larger flywheel, a smaller flywheel, or may eliminate the flywheel entirely and incorporate a cam system with connecting linkage, provided that the foot links are coupled so as to permit an arcuate path of travel by the foot support portions 66, 76 of the foot links 60, 70.
As most clearly shown in
The left and right forward portions 62, 72 of the foot links 60, 70 terminate in left and right engagement rollers 68, 78. The left and right engagement rollers 68, 78 ride along the above-described grooves 44, 54 of the guide tracks 42, 52. Preferably, the engagement rollers 68, 78 are actually pairs of rollers. The engagement rollers 68, 78 rotate about axles that are affixed to the forward portions 62, 72 of the foot links 60, 70. During use of the exercise device 10, the engagement rollers 68, 78 at the front of the foot links 60, 70 translate back and forth the length of the guide tracks 42, 52 in rolling engagement within the grooves 44, 54, as the foot support portions 66, 76 of the foot links 60, 70 travel in an arcuate path of motion, and the rearward portions 64, 74 of the foot links 60, 70 rotate about the transverse axle 34. In an alternate embodiment of the present invention, the engagement rollers 68, 78 could be replaced with sliding engagement mechanisms without departing from the scope of the present invention.
As shown in
In alternate embodiments of the present invention, the engagement assemblies 100, 110 could be configured such that the abutment knobs 108, 118 were located on the curved attachment links 104, 114 (or the abutment knobs could be deleted altogether), without departing from the scope of the present invention. Further, depending on the exact configuration and number of links utilized in the engagement assemblies 100, 110, the curved attachment links 104, 114 may not even be curved, but rather may be linear attachment links. Each curved attachment link 104, 114 is rotatably coupled to an abutment arm 106, 116. Each curved attachment link 104, 114 is fixedly secured to the forward portion 62, 72 of a foot link 60, 70, and each abutment arm 106, 116 is rotatably coupled to the coupling region 86, 96 of a swing arm mechanism 80, 90.
Referring again to
The hand-gripping portions 82, 92 of the swing arm mechanisms 80, 90 are grasped by the hands of the individual user, and allow upper body arm and shoulder exercising motions to be incorporated in conjunction with the reciprocal, elliptical exercising motion traced out by the user's feet. As can be more readily understood with reference to
An alternative exemplary exercise device that can incorporate the principles of the present invention is set forth in
A pair of arm links 764 and 766 is provided. Each arm link 764, 766 is pivotally supported by the frame 712 at support point 768. The arm links 764, 766 are also pivotally coupled to the ends 724″, 726″ of the foot links 724, 726. As indicated by phantom line Y, pivoting of the arm links 764, 766 about the support point 768 causes the second ends 724″, 726″ of the foot links 724, 726 to reciprocate along the curved path Y. The arm links 764, 766 also include handle portions 764a, 766a associated therewith. These handle portions may be configured to be gripped by a user and, during the operation of the device they also reciprocate, thereby providing upper body exercise.
An exercise device that is constructed in accordance with the present invention allows a user to easily and efficiently choose to use or not to use the arm apparatus. Referring to
A bracket 123 is securely connected to the arm mechanism and extends downwardly on each side of the pivot point connection 84, 94. The bracket 123 provides a pivotal connection 94 between an upper portion 126 and a lower portion 127 of the swing arm mechanism 90. While this exemplary arm enabling/disabling mechanism 121 is shown and described as positioned connected to the arm mechanism at the approximate midpoint of the arm mechanism, it should be appreciated that the position of the arm enabling/disabling mechanism is not critical to the principles of the present invention so long as the positioning of the arm enabling/disabling mechanism allows the arm mechanisms to be disengaged from the leg potion.
The bracket 123 secures a cable assembly 130 having a cable 132 connected at one end to an actuator 134 contained on the arm mechanism 90 proximal to the hand-gripping portions 92 (seen in
The latching plate 136 further defines two slots 152, 154. The first slot 152 secures the arm enabling/disabling mechanism 121 in the enabled position; the second slot 154 secures the arm enabling/disabling mechanism 121 in the disabled position. Proximal to the latching plate 136 in the enabled position an outwardly extending enable pin 156 extends from the lower portion 127 of the swing arm mechanism 90. The outwardly extending enable pin 156 is adapted to coordinate with the first slot 152 defined in the latching plate 136. In
Referring to
A bracket 123 is securely connected to the arm mechanism and extends downwardly on each side of the pivot point connection 84, 94. In the preferred embodiment of an arm enabling/disabling mechanism 121 in accordance with the principles of the present invention, the bracket 123 defines extends on both the inner side and the outer sides of the swing arm mechanism 90 in order to provide a second pivot point 125. This second pivot point 125 provides a pivotal connection between the bracket 123 and a lower portion 127 of the swing arm mechanism 90 in addition to a pivotal connection 94 between the bracket 123 and the upper portion 129 of the swing arm mechanism 90. By providing this two pivot point connection among the lower portion 127 and the upper portion 129 of the swing arm mechanism 90, the preferred embodiment of an arm enabling/disabling mechanism 121 of the present invention balances the forces applied on the swing arm mechanism 90 thereby increasing the durability of the device. Again, while this exemplary arm enabling/disabling mechanism 121 is shown and described as positioned connected to the arm mechanism at the approximate midpoint of the arm mechanism, it should be appreciated that the position of the arm enabling/disabling mechanism is not critical to the principles of the present invention so long as the positioning of the arm enabling/disabling mechanism allows the arm mechanisms to be disengaged from the leg potion.
The bracket 123 secures a cable assembly 130 having a cable 132 connected at one end to an actuator 134 contained on the arm mechanism 90 proximal to the hand-gripping portions 82. The opposite end of the cable 132 is connected to a latching plate 136 by a suitable securing apparatus 138. The latching plate 136 is pivotally secured to the bracket 123 around a latching plate pivot axis 141. The latching plate 136 includes a biasing arm 143 having a biasing member 145 such as a spring connecting the biasing arm 143 to the bracket 123 by suitable securing apparatus 147, 149. Thus, the latching plate 136 is biased around the latching plate pivot axis 141 in opposition to the cable 132, thereby providing biasing resistance to the cable 132.
The latching plate 136 further defines two slots 152, 154. The first slot 152 secures the arm enabling/disabling mechanism 121 in the enabled position; the second slot 154 secures the arm enabling/disabling mechanism 121 in the disabled position. Proximal to the latching plate 136 in the enabled position an outwardly extending enable pin 156 extends from the lower portion 127 of the swing arm mechanism 80. The outwardly extending enable pin 156 is adapted to coordinate with the first slot 152 defined in the latching plate 136. In
It is a further advantage of the present invention that when the swing arm assemblies 80, 90 are in the disabled position, the swing arm assemblies 80, 90 act as stationary arm grips for the user on the exercise device. In order to effectuate this, the coupling regions 86, 96 and the left and right hand-gripping portions 82, 92 of left and right swing arm mechanisms 80, 90 are advantageously shaped to provide both stationary arm grips in the disabled position and active arm action in the enabled position. Other configurations of the hand-gripping mechanisms also are contemplated.
To use the present invention, the user stands on the foot support portions 66, 76 and grasps the hand-gripping portions 82, 92. Initially, the arm mechanism is in the enabled position and thus the enabling/disabling mechanism is securely latched with the outwardly extending enable pin in the first slot of the latching plate. The user imparts a forward stepping motion on one of the foot support portions, thereby causing the transverse axle 34 to rotate in a clockwise direction (when viewed from the right side as shown in
The foot links 60, 70 are attached to the transverse axle 34 by the crank arm assemblies 40, 50 such that one foot support portion moves substantially forward as the other foot support portion moves substantially rearward. In this same fashion one hand-gripping portion moves forward as the other hand-gripping portion moves rearward (e.g., when the left hand-gripping portion 82 moves forward, the left foot support portion 66 moves rearward, while the right foot support portion 76 moves forward and the right hand-gripping portion 92 moves rearward). Therefore, the user can begin movement of the entire foot link and swing arm mechanism linkage by moving any foot support portion or hand-gripping portion, or preferably by moving all of them together.
In the enabled position, to disable the arms, the user simply actuates the actuator and places the arms to the disengaged position. When the actuator is released, the outwardly extending disable pin is engaged in the second slot of the latching plate. In the disabled position, to re-enable the arms, the user simply actuates the actuator and returns the arms to the actuated position. When the actuator is released, the outwardly extending enable pin is again engaged in the first slot of the latching plate. Importantly, the user can effectuate either action—disengaging or engaging the arms—without stepping off the exercise device or, indeed, without interrupting the exercise regime.
While the exemplary embodiment described herein uses one embodiment of a mechanical enabling/disabling mechanism, other mechanical configurations also can be used. Additionally, other alternative embodiments for the enabling/disabling mechanism can include for example an electronic enabling/disabling mechanism such as for example an electronic solenoid mechanism coupled to an electronic switch through a wired or wireless connection. Further, the electronic switch or actuator can be voice activated. Other alternative embodiments of the enabling/disabling mechanism can include pneumatic and/or hydraulic components or mechanisms.
While the invention has been described with specific embodiments, other alternatives, modifications and variations will be apparent to those skilled in the art. For example, while the exemplary embodiment described herein requires the user to physically move the swing arm assemblies between the enabled and disabled positions, alternative embodiments can include a system that moves the swing arm assemblies between the enabled and disabled positions automatically utilizing, for example, biasing mechanisms such as for example springs or counter weights. Accordingly, it will be intended to include all such alternatives, modifications and variations set forth within the spirit and scope of the appended claims.
