EP2841172A1

EP2841172A1 - Exercise systems for simulating outdoor terrain

Info

Publication number: EP2841172A1
Application number: EP13782082.5A
Authority: EP
Inventors: Scott R. Watterson
Original assignee: Icon Health and Fitness Inc
Current assignee: Ifit Health and Fitness Inc
Priority date: 2012-04-23
Filing date: 2013-04-19
Publication date: 2015-03-04
Anticipated expiration: 2033-04-19
Also published as: CN104245056B; EP2841172A4; CN104245056A; WO2013163044A1; EP2841172B1

Abstract

An exercise system that stimulates outdoor terrain includes a base frame including a treadbase. The treadbase is selectively rotatable about a first and second axis. A ball joint connection assembly pivotably connects the treadbase to the base frame and enables the rotation of the treadbase about the first and second rotation axis. A plurality of lift mechanisms may be used to selectively rotate the treadbase about the first and second axis.

Description

TITLE

EXERCISE SYSTEMS FOR SIMULATING OUTDOOR TERRAIN

TECHNICAL FIELD

[0001] This disclosure relates generally to exercise equipment. More particularly, the disclosure relates to exercise systems including mechanisms to substantially simulate walking or running on outdoor terrain.

BACKGROUND

[0002] In an attempt to Improve their health and physical conditioning, consumers are purchasing exercise devices in record quantities. One common challenge with exercise equipment is motivating the purchaser to use the device on a consistent and ongoing basis. This lack of motivation can be a result of the repetitive nature of the exercises and exercise routines that a user can perform on a specific exercise device as well as the versatility of the exercise devices.

[0003] Typical treadmills allow a user to adjust various operating parameters to provide for improved workouts and variety during the workouts. However, users are typically limited as to which treadmill operating parameters can be adjusted. For instance, treadmills usually provide for the adjustment of the speed and incline of the endless belt upon which the user ambulates. This allows a user to walk, jog, and/or run on the treadmill. It also allows the user to ambulate on a level surface or on an inclined surface. These adjustable operating parameters are often insufficient to motivate a user to consistently use the treadmill on an ongoing basis.

[0004] Some exercise devices have been developed to provide greater versatility to workouts. For instance, U.S. Patent No. 6,152,854 discloses a treadmill that includes a moveable user support that has a plurality of rotatable members that rotate about axes normal to the direction of movement of the user support. Six cylinders forming a hexapod are attached to a base of the moveable user support. The cylinders are attached to the base and the ground by ball joints. Control of the cylinders allows 6 degrees of freedom motion. Other exercise devices with adjustable parameters or that attempt to simulate outdoor terrain include U.S. Patent No. 3,408,067, U.S. Patent No. 4,423,864, U.S. Patent No. 7,637,847, U.S. Patent No. 8,029,415, and U.S. Patent Publication No. 2009/0209393.

DISCLOSURE OF THE INVENTION

[0005] In one example embodiment of the disclosure, an exercise system comprises a treadmill that substantially simulates outdoor terrain in response to one or more control signals. The treadmill includes a base frame and a treadbase. The treadbase has a first end, a second end, a first side, and a second side. A ball joint connection assembly pivotally connects the treadbase and the base frame. The ball joint connection assembly enables the treadbase to rotate about a first rotation axis and a second rotation axis. The treadmill also includes a first lift mechanism pivotally connected between the base frame and the treadbase and a second lift mechanism pivotally connected between the base frame and the treadbase. In response to one or more control signals, the first lift mechanism selectively rotates the treadbase about the first rotation axis. Similarly, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about the second rotation axis.

[0006] In another aspect that may be combined with any of the aspects herein, the second lift mechanism is a mechanical linear actuator connected to the base frame and the first end of the treadbase.

[0007] In another aspect that may be combined with any of the aspects herein, the first lift mechanism selectively extends and retracts to rotate the treadbase about the first rotation axis.

[0008] In another aspect that may be combined with any of the aspects herein, the first lift mechanism selectively extends and retracts to rotate the treadbase about the first rotation axis such that at least a portion of the first end of the treadbase is positioned above or below the second end of the treadbase.

[0009] In another aspect that may be combined with any of the aspects herein, the first lift mechanism selectively extends and retracts to rotate the treadbase about at least one of the second rotation axis or a third rotation axis.

[0010] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about the second rotation axis such that at least a portion of the first side of the treadbase is positioned above or below the second side of the treadbase. [0011] In another aspect that may be combined with any of the aspects herein, the second lift mechanism comprises a mechanical linear actuator.

[0012] In another aspect that may be combined with any of the aspects herein, the second lift mechanism selectively extends and retracts to rotate the treadbase about the second rotation axis.

[0013] In another aspect that may be combined with any of the aspects herein, in response to the one or more control signals, the second lift mechanism selectively rotates the treadbase about the second rotation axis such that at least a portion of the first side of the treadbase is positioned above or below the second side of the treadbase.

[0014] In another aspect that may be combined with any of the aspects herein, the second lift mechanism comprises a mechanical linear actuator connected to the base frame and the first end of the treadbase.

[0015] In another aspect that may be combined with any of the aspects herein, the second lift mechanism selectively extends and retracts to rotate the treadbase about at least one of the first rotation axis, the second rotation axis, or a third rotation axis generally orthogonal to the first rotation axis and the second rotation axis.

[0016] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about the first rotation axis such that at least a portion of the first end of the treadbase is positioned above or below the second end of the treadbase.

[0017] In another aspect that may be combined with any of the aspects herein, the first lift mechanism and the second lift mechanism are pivotally connected between the base frame and the first end of the treadbase.

[0018] In another aspect that may be combined with any of the aspects herein, a third lift mechanism is pivotally connected between the base frame and the treadbase.

[0019] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the third lift mechanism selectively rotates the treadbase about at least one of the first rotation axis, the second rotation axis, or a third rotation axis.

[0020] In another aspect that may be combined with any of the aspects herein, a fourth lift mechanism is pivotally connected between the base frame and the treadbase. [0021] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the fourth lift mechanism selectively rotates the treadbase about at least one of the first rotation axis, the second rotation axis, or a third rotation axis.

[0022] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the first lift mechanism, the second lift mechanism, the third lift mechanism, and the fourth lift mechanism selectively move the treadbase between a raised position relative to the base frame and a lower position relative to the base frame.

[0023] In another aspect that may be combined with any of the aspects herein, the ball joint connection assembly comprises a ball socket including a recess formed therein and a bearing shoulder, and a ball member rotatably received in the recess of the ball socket and retained therein by the bearing shoulder.

[0024] In another aspect that may be combined with any of the aspects herein, the ball member is connected to a cross member of the base frame and the ball socket is connected to a cross member of the treadbase.

[0025] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about at least one of the first rotation axis or the second rotation axis.

[0026] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about at least one of the first rotation axis or the second rotation axis.

[0027] In another aspect that may be combined with any of the aspects herein, In response to one or more control signals, the third lift mechanism selectively rotates the treadbase about at least one of the first rotation axis or the second rotation axis.

[0028] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the fourth lift mechanism selectively rotates the treadbase about at least one of the first rotation axis or the second rotation axis.

[0029] In another aspect that may be combined with any of the aspects herein, at least one of the first lift mechanism, the second lift mechanism, the third lift mechanism, or the fourth lift mechanisms comprises a mechanical linear actuator that extends and retracts to selectively rotate the treadbase about at least one of the first rotation axis or the second rotation axis.

[0030] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about at least one of the first rotation axis or the second rotation axis.

[0031] In another aspect that may be combined with any of the aspects herein, the treadbase is selectively movable relative to the base frame between a declined position, a neutral position, and an inclined position.

[0032] In another aspect that may be combined with any of the aspects herein, a deck assembly is pivotally connected to the treadbase.

[0033] In another aspect that may be combined with any of the aspects herein, the deck assembly is selectively movable relative to the treadbase between a first tilted position and a second tilted position.

[0034] In another aspect that may be combined with any of the aspects herein, the first lift mechanism selectively moves the treadbase and the deck assembly between the declined position, the neutral position, and the inclined position.

[0035] In another aspect that may be combined with any of the aspects herein, a second lift mechanism is pivotally connected between the first side of the treadbase and the deck assembly.

[0036] In another aspect that may be combined with any of the aspects herein, in response to one or more control signals, the second lift mechanism selectively moves the deck assembly between the first tilted position and the second tilted position.

[0037] In another aspect that may be combined with any of the aspects herein, a hinge member pivotally connects the second side of the treadbase and the deck assembly.

[0038] In another aspect that may be combined with any of the aspects herein, a third lift mechanism is pivotally connected between the second side of the treadbase and the deck assembly.

[0039] In another aspect that may be combined with any of the aspects herein, In response to one or more control signals, the third lift mechanism selectively moves the deck assembly between the first tilted position and the second tilted position. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 illustrates a perspective view of an exercise system according to one embodiment of the present invention.

[0041] Figure 2 illustrates a side view of the exercise system of Figure 1 with the exercise system in a neutral position and an inclined position.

[0042] Figure 3 illustrates a rear perspective view of the exercise system of Figure 1 in a first tilted position.

[0043] Figure 4 illustrates another rear perspective View of the exercise system of Figure 1 in a second tilted position.

[0044] Figure 5 illustrates a bottom view of the exercise system of Figure 1, according to one embodiment of the present invention.

[0045] Figure 6 illustrates a cut away perspective view of one embodiment of a lifting mechanism of the exercise system of Figure 1.

[0046] Figure 7 illustrates a cut away perspective view of one embodiment of a lifting mechanism of the exercise system of Figure 1.

[0047] Figure 8A illustrates an exploded cut away perspective view of the ball joint connection assembly shown in Figure 7.

[0048] Figure 8B illustrates a cross-section view of the ball joint connection assembly shown in Figure 7 taken along line 8B-8B.

[0049] Figure 9 illustrates a bottom view of an alternative embodiment of a treadbase and a base frame that may be used with the exercise system of Figure 1.

[0050] Figure 10 illustrates a cut away perspective of the lift mechanisms of the treadbase and the base frame shown in Figure 9.

[0051] Figure 11 A illustrates a bottom view of another alternative embodiment of a treadbase and a base frame that may be used with the exercise system of Figure 1.

[0052] Figure 1 IB illustrates a bottom View of still another alternative embodiment of a treadbase and a base frame that may be used with the exercise system of Figure 1.

[0053] Figure 12 illustrates a bottom View of yet another alternative embodiment of a treadbase and a base frame that may be used with the exercise system of Figure 1.

[0054] Figure 13 illustrates a cut away perspective of one embodiment of a lift mechanism from the embodiment of Figure 12. [0055] Figure 14 illustrates a perspective view of the treadbase and the base frame of Figure 12.

[0056] Figure 15 illustrates a bottom view of another alternative embodiment of a treadbase and a base frame that may be used in connection with the exercise system of Figure 1.

BEST MODE(S) FOR CARRYING OUT THE INVENTION

[0057] Depicted in Figures 1-5 is a representation of one illustrative exercise system 10. Exercise system 10, which is illustrated as a treadmill, III one embodiment, includes a console or control panel 12 having a display 14 and various inputs 16. Control panel 12 is supported on a generally upright support structure 18. The upright support structure 18 includes two side members 20, 22 attached to a base frame 24. A treadbase 26 is mounted on base frame 24 and typically includes a pair of side rails 28, 30, each having a front portion proximal to the upright support structure 18 and a distal portion distal from the upright support structure 18. Treadbase 26 also typically includes front and rear pulleys 32, 34 (Figure 5) disposed between and supported by side rails 28, 30 with a continuous belt 36 extending between and about front and rear pulleys 32, 34, respectively. Front and rear pulleys 32, 34 and continuous belt 36 may each be considered a movable element that is movable during the performance of an exercise. A deck 38 typically supports the upper run of belt 36 and an exercising individual positioned upon belt 36.

[0058] As is common with electric treadmills, at least one of front pulley 32 and rear pulley 34 may be mechanically connected to an electric drive motor 40 by way of a drive belt 42. Optional motor 40 is optionally electrically coupled to a controller 44 that controls operation of motor 40, and thus the speed of belt 36, in response to various user inputs or other control signals.

[0059] In addition to the ability to control and vary the speed of belt 36, exercise system 10 also permits the degree of incline or decline of treadbase 26 and belt 36 to be varied relative to base frame 24, or the floor or other support surface upon which exercise system 10 rests. To facilitate various inclines and declines of treadbase 26, treadbase 26 is pivotally connected to base frame 24 via a ball joint connection assembly 70 (Figure 5). As shown in Figure 2 in solid lines, treadbase 26 can be oriented in a neutral position. In the neutral position, treadbase 26 is substantially parallel to a support surface and generally aligned with base frame 24. Treadbase 26 can be rotated about an X rotation axis that is illustrated generally perpendicular to a longitudinal axis of treadbase 26 and passing through ball joint connection assembly 70. As illustrated in Figure 2, the treadbase 26 can be rotated about the X rotation axis between the neutral position (solid lines) and an inclined position (phantom lines). In the inclined position, the front end portion of treadbase 26 is above the neutral position. Similarly, treadbase 26 can be rotated about the X rotation axis to a declined position where the front end portion of treadbase 26 drops below the neutral position.

[0060] In the illustrated embodiment, exercise system 10 also permits treadbase 26 to be tilted from side to side. As depicted in Figures 3 and 4, treadbase 26 can be rotated about a Y rotation axis that is illustrated generally orthogonal to the X rotation axis and parallel to the longitudinal axis of treadbase 26. The treadbase 26 can be rotated about the Y rotation axis such that one side of treadbase 26 is higher than the other. For instance, Figure 3 illustrates treadbase 26 tilted so that side rail 28 is higher than side rail 30. Similarly, Figure 4 illustrates treadbase 26 tilted so that side rail 30 is higher than side rail 28. Thus, exercise system 10 provides a surface that inclines, declines, and/or tilts side -to-side. In some embodiments, treadbase 26 can also be rotated about a Z rotation axis (Figure 1) that is illustrated generally orthogonal to both the X rotation axis and the Y rotation axis. Rotation of treadbase 26 about any other axis can be broken down into a combination of rotations of treadbase 26 about the X, Y, Z rotation axes.

[0061] As shown in Figure 5, exercise system 10 includes lift mechanisms 46, 48 to adjust the incline, decline, and/or tilt of treadbase 26. A cross member 72 of base frame 24 is generally in line with lift mechanism 46 and extends between the rear end portion of base frame 24 and cross bar 52. A cross member 74 of treadbase 26 is generally in line with lift mechanism 48 and extends between side rails 28, 30. In the illustrated embodiment, cross member 74 extends across and over cross member 72 such that cross members 72 and 74 are generally perpendicular to one another. Lift mechanisms 46, 48 are illustrated as mechanical linear actuators, each including a drive mechanism, gear, lead screw, and a lift motor housing. Upon receiving a control signal from controller 44, the drive mechanism rotates the gear, which in turn rotates the lead screw. To raise a lift mechanism, the gear rotates in a first direction extending the lead screw. To lower a lift mechanism, the gear rotates in a second, opposite direction retracting lead screw. In some embodiments, lift mechanisms can incline a treadbase about the X rotation axis, tilt the treadbase about the Y rotation axis, and/or turn the treadbase about the Z rotation axis.

[0062] In the illustrated embodiment, lift mechanism 46 is generally in line with ball joint connection assembly 70. Lift mechanism 46 is pivotally connected at the front end portion of treadbase 26 between a cross bar 50 of treadbase 26 and a cross bar 52 of base frame 24. Lift mechanism 46 is positioned on cross bar 50 and cross bar 52 such that as lift mechanism 46 extends or retracts, treadbase 26 rotates about or inclines relative to the X rotation axis. For instance, lift mechanism 46 is located at a distance from the X rotation axis such that operation of lift mechanism 46 produces a rotation of treadbase 26 about the X rotation axis. In addition, lift mechanism 46 is generally in line with cross member 72 of base frame 24 and the Y rotation axis such that operation of lift mechanism 46 does not produce a rotation of treadbase 26 about the Y rotation axis.

[0063] As illustrated in Figure 6, a first end 54 of lift mechanism 46 is pivotally connected to cross bar 50 by way of a bracket 58 while a second end 56 of lift mechanism 46 is connected to cross bar 52 by way of a bracket 60. Each of brackets 58, 60 are generally V- shaped with a pin that can be secured between the two extending sides. The first and second ends 54, 56 of lift mechanism 46 are able to pivot on the pins within brackets 58, 60 about axes that are generally transverse to a longitudinal axis of treadbase 26. Brackets 58, 60 themselves are pivotally connected to cross bars 50, 52 with the use of a mechanical fastener. For instance, the bottom cross portion of each of the brackets 58, 60 may have a bolt extending therethrough and which is secured within the respective cross bar or frame of each bracket. The connection allows the brackets to rotate.

[0064] Referring now to Figure 7, lift mechanism 48 is similar to lift mechanism 46. Lift mechanism is generally in line with ball joint connection assembly 70 and pivotally connected to side rail 30 of treadbase 26 and base frame 24. Lift mechanism 48 is positioned on side rail 30 and base frame 24 such that as lift mechanism 48 selectively extends or retracts, treadbase 26 rotates about or inclines relative to the Y rotation axis. For instance, lift mechanism 48 is located at a distance from the Y rotation axis such that operation of lift mechanism 48 produces a rotation of treadbase 26 about the Y rotation axis. In addition, lift mechanism 48 is generally in line with cross member 74 of treadbase 26 and the X rotation axis extending through ball joint connection assembly 70 such that operation of lift mechanism 48 does not produce a torque or rotation of treadbase 26 about the X rotation axis. [0065] A first end 62 of lift mechanism 48 is pivotally connected to side rail 30 by way of a bracket 66 and a second end 64 of lift mechanism 48 is connected to base frame 24 by way of a bracket 68. Each of brackets 66 and 68 are generally U-shaped with a pin that can be secured between the two extending sides. The first and second ends 62, 64 of lift mechanism 48 are each mounted on the pin of their respective bracket 66, 68. Brackets 66, 68 are pivotally connected to side rail 30 and base frame 24, respectively, with the use of a mechanical fastener. For instance, the bottom cross portion of each of the brackets 66, 68 may have a bolt extending therethrough and which is secured within the respective cross bar or frame of each bracket. The connection allows the brackets to rotate. As lift mechanism 48 raises or lowers the side of treadbase 26, first and second ends 62, 64 of lift mechanism 48 pivot on the pins within brackets 66, 68. In this manner, first and second ends 62, 64 of lift mechanism 48 are able to pivot about axes that are generally parallel to a longitudinal axis of treadbase 26.

[0066] In the illustrated embodiment, lift mechanisms 46, 48 can facilitate movement of treadbase 26 in a variety of different directions. More specifically, operation of lift mechanisms 46, 48, either in combination or independently, can rotate treadbase 26 such that treadbase 26 inclines and/or tilts relative to base frame 24. For example, upon retraction of lift mechanism 46 to a retracted position, lift mechanism 46 declines or rotates treadbase 26 about the X rotation axis to a declined position, wherein the front end portion of treadbase 26 is positioned below the neutral position. When lift mechanism 46 is selectively extended to an extended position, lift mechanism 46 inclines or rotates treadbase 26 about the X rotation axis to an inclined position, wherein the front end portion of treadbase 26 is positioned above the neutral position. Movement of lift mechanism 46 to any position between the extended position and the retracted position can rotate treadbase 26 about the X rotation axis to a position between the inclined position and the declined position.

[0067] By way of another example, upon retraction of lift mechanism 48 to a retracted position, lift mechanism 48 tilts or rotates treadbase 26 about the Y rotation axis to a first tilted position, wherein side rail 30 is moved to a lower position than side rail 28. When lift mechanism 48 is selectively extended to an extended position, lift mechanism 48 tilts or rotates treadbase 26 about the Y rotation axis to a second tilted position, wherein side rail 28 is moved to a higher position than side rail 30. Movement of lift mechanism 48 to any position between the fully retracted position and the fully extended position can tilt or rotate treadbase 26 about the Y rotation axis to a position between the first tilted position and the second tilted position. Moreover, operation of lift mechanism 46 and lift mechanism 48 in combination can rotate treadbase 26 such that treadbase 26 tilts and inclines relative to base frame 24. Thus, lift mechanisms 46, 48 can rotate treadbase 26 relative to base frame 24 in a variety of different directions.

[0068] Figures 8A and 8B illustrate ball joint connection assembly 70. Ball joint connection assembly 70 includes a ball member 76 connected to cross member 72 and a ball socket 78 connected to cross member 74. Ball joint connection assembly 70 pivotally connects cross member 74 and cross member 72. Ball member 76 is rotatably received in a recess 80 formed in ball socket 78 and retained therein by a bearing shoulder 81. As lift mechanisms 46, 48 rotate treadbase 26 about the X and/or Y rotation axes, treadbase 26 pivots on ball member 76 of ball joint connection assembly 70. In this manner, treadbase 26 rotates about different axes extending through ball member 76 such that treadbase 26 inclines, declines, and/or tilts relative to base frame 24.

[0069] Attention is now directed to Figures 9 and 10 which illustrate another embodiment of a treadbase 126 and a base frame 124 that may be used in connection with exercise system 10 in place of treadbase 26 and base frame 24. Specifically, Figures 9 and 10 illustrate a bottom view and partial cut away view of treadbase 126 and base frame 124. As shown, treadbase 126 is pivotally connected to base frame 124 by a ball joint connection assembly 170. Treadbase 126 includes a pair of generally parallel side rails 128, 130, each having a front portion proximal to upright support structure 18 (Figure 1) and a distal portion distal from upright support structure 18. Treadbase 126 also includes front and rear pulleys 132, 134 positioned between and supported by side rails 128, 130 with a continuous belt 136 extending between and about front and rear pulleys 132, 134, respectively. A deck 138 supports the upper run of belt 136. Like front and rear pulleys 32, 34, at least one of front pulley 132 and rear pulley 134 may be mechanically connected to electric drive motor 40.

[0070] Base frame 124 includes a cross bar 152 and a cross member 172 extending between a rear end portion of base frame 124 and cross bar 152. Treadbase 126 includes a cross bar 150 and cross member 174 extending between side rails 128, 130. Cross member 174 is illustrated extending across and over cross member 172 such that cross members 172 and 174 are generally perpendicular to one another. [0071] In the illustrated embodiment, treadbase 126 and base frame 124 include two lift mechanisms 146, 148, illustrated as mechanical linear actuators, at the front end portion of treadbase 126. As explained in more detail below, lift mechanisms 146, 148 are connected to treadbase 126 and base frame 124 such that as lift mechanism 146 and/or lift mechanism 148 extend or retract, treadbase 126 tilts, inclines, and/or turns relative to base frame 124.

[0072] Lift mechanism 146 is pivotally connected to cross bar 150 of treadbase 126 and cross bar 152 of base frame 124. Lift mechanism 146 is also positioned between the Y rotation axis and side rail 128 and is generally offset from ball joint connection assembly 170, cross bar 172, and the Y rotation axis toward side rail 128. As noted above, lift mechanism 146 is positioned such that as lift mechanism 146 extends or retracts, treadbase 126 can tilt, incline, and/or turn relative to base frame 124. For instance, lift mechanism 146 is connected between treadbase 126 and base frame 124 at a distance from the X rotation axis, the Y rotation axis, and the Z rotation axis such that operation of lift mechanism 146 can produce a rotation of treadbase 126 about the X rotation axis, the Y rotation axis, and/or the Z rotation axis.

[0073] As illustrated, a first end 154 of lift mechanism 146 is pivotally connected to cross bar 150 by way of a bracket 158 while a second end 156 of lift mechanism 146 is connected to cross bar 152 by way of a bracket 160. Each of brackets 158, 160 are generally V-shaped with a pin that can be secured between the two extending sides. The first and second ends 154, 156 of lift mechanism 146 are able to pivot on the pins within brackets 158, 160 about axes that are generally transverse to a longitudinal axis of treadbase 126. Brackets 158, 160 are pivotally connected to cross bars 150, 152. Brackets 158, 160 are pivotally connected to their cross bars or frames with the use of a mechanical fastener. For instance, the bottom cross portion of each of the brackets 158, 160 may have a bolt extending therethrough and which is secured within the respective cross bar or frame of each bracket. Such a connection allows the bracket to rotate about axes that are generally parallel to the longitudinal axis of treadbase 126.

[0074] Lift mechanism 148 is pivotally connected to cross bar 150 of treadbase 126 and cross bar 152. Lift mechanism 148 is also positioned between the Y rotation axis and side rail 130 and is generally offset from ball joint connection assembly 170, cross bar 172, and the Y rotation axis toward side rail 130. Like lift mechanism 146, lift mechanism 148 is positioned such that as lift mechanism 148 extends or retracts, treadbase 126 can tilt, incline, and/or turn relative to base frame 124. For instance, lift mechanism 148 is connected between treadbase 126 and base frame 124 at a distance from the X rotation axis, the Y rotation axis, and the Z rotation axis such that operation of lift mechanism 148 can produce a rotation of treadbase 126 about the X rotation axis, the Y rotation axis, and/or the Z rotation axis. A first end 162 of lift mechanism 148 is pivotally connected to cross bar 150 by way of a bracket 166 while a second end 164 of lift mechanism 148 is connected to cross bar 152 by way of a bracket 168. As illustrated, brackets 166, 168 are similar to brackets 158, 160.

[0075] As mentioned above, control signals control the operating parameters of exercise system 10, such as speed, inclination, tilt, and the like. In the illustrated embodiment, lift mechanisms 146, 148 can facilitate movement of treadbase 126 in a variety of different directions in response to control signals. More specifically, operation of lift mechanisms 146, 148, either in combination or independently, can move treadbase 126 such that treadbase 126 inclines, declines, tilts, and/or turns relative to base frame 124. For instance, retraction of both lift mechanisms 146, 148 to a retracted position rotates treadbase 126 about the X rotation axis such that at least a portion of the front end portion of treadbase 126 is positioned below the rear end portion of treadbase 126. When lift mechanisms 146, 148 are selectively extended to an extended position, lift mechanisms 146, 148 rotate treadbase 126 about the X rotation axis such that at least a portion of the front end portion of treadbase 126 is positioned above the rear end portion of treadbase 126. Also, retraction of lift mechanism 146 to a retracted position and/or extension of lift mechanism 148 rotates treadbase 126 about the Y rotation axis such that at least a portion of side rail 130 of treadbase 126 is positioned higher than side rail 128. Moreover, extension of lift mechanism 146 to an extended position and/or retraction of lift mechanism 148 rotates treadbase 126 about the Y rotation axis such that at least a portion of side rail 130 is positioned lower than side rail 128, as shown in Figure 10.

[0076] By way of another example, extension of lift mechanism 146 to an extended position and maintenance of lift mechanism 148 in a neutral position rotates treadbase 126 about the Z rotation axis such that the front end portion of treadbase 126 turns toward side rail 130. Extension of lift mechanism 148 to an extended position and maintenance of lift mechanism 146 in a neutral position rotates treadbase 126 about the Z rotation axis such that the rear end portion of treadbase 126 turns toward side rail 128. Moreover, operation of lift mechanism 146 and lift mechanism 148 in combination can rotate treadbase 126 such that treadbase 126 tilts, inclines/declines, and/or turns simultaneously relative to base frame 124. Thus, lift mechanisms 146, 148 can rotate treadbase 126 relative to base frame 124 in a variety of different directions.

[0077] Similar to ball joint connection assembly 70, ball joint connection assembly 170 includes a ball member 176 connected to cross member 172 and a ball socket 178 connected to cross member 174. Ball joint connection assembly 170 pivotally connects cross member 172 and cross member 174. Ball member 176 is rotatably received in a recess 180 formed in ball socket 178 and retained therein by a bearing shoulder 181. As lift mechanisms 146, 148 rotate treadbase 126 about the X, Y, and/or Z rotation axes, treadbase 126 pivots on ball member 176. In this manner, treadbase 126 can rotate about an infinite number of axes extending through ball member 176 such that treadbase 126 rotates in various directions relative to base frame 124.

[0078] Attention is now directed to Figure 11 A which illustrates another embodiment of a treadbase 226 and a base frame 224 that may be used in connection with exercise system 10 in place of treadbase 26 and base frame 24. Specifically, Figure 11 A illustrates a bottom view of treadbase 226 and base frame 224. As seen in Figure 11 A, base frame 224 includes a cross bar 252 and a cross bar 256 near opposing ends of base frame 224. Treadbase 226 includes a pair of generally parallel side rails 228, 230, each having a front portion proximal to the upright structure 18 and a distal portion distal from upright support structure 18.

Treadbase 226 further includes a cross bar 250 extending between the front portions of side rails 228, 230 and a cross bar 254 extending between the distal portions of side rails 228, 230. Treadbase 226 also includes front and rear pulleys 232, 234 positioned between and supported by side rails 228, 230, and a continuous belt 236 extending between and about front and rear pulleys 232, 234, respectively. A deck 238 is connected to side rails 228, 230 and supports the upper run of belt 236. Similar to treadbases 26 and 126, at least one of front pulley 232 and rear pulley 234 may be mechanically connected to electric drive motor 40.

[0079] An X rotation axis is illustrated generally perpendicular to a longitudinal axis of treadbase 226 and passing through a center of treadbase 226. A Y rotation axis is illustrated generally orthogonal to the X rotation axis and parallel to the longitudinal axis of treadbase 226. The Y rotation axis is illustrated also passing through the center of treadbase 226. A Z rotation axis is illustrated generally orthogonal to both the X rotation axis and the Y rotation axis. [0080] In the illustrated embodiment, treadbase 226 and base frame 224 include four lift mechanisms, two lift mechanisms 288, 290 at the front end portion of treadbase 226 and two lift mechanisms 292, 294 at the rear end portion of treadbase 226. Each lift mechanism 288, 290, 292, 294 is illustrated as a mechanical linear actuator. As explained in more detail below, lift mechanisms 288, 290, 292, 294 are connected to treadbase 226 and base frame 224 such that when one or more of lift mechanisms 288, 290, 292, and 294 extend or retract, treadbase 226 tilts, inclines, declines, turns, and/or translates relative to base frame 224.

[0081] Lift mechanisms 288, 290 are illustrated pivotally connected to cross bar 250 of treadbase 226 and cross bar 252 of base frame 224. As illustrated, lift mechanism 288 is positioned between side rail 228 and the Y rotation axis. Lift mechanism 290 is positioned between side rail 230 and the Y rotation axis. Lift mechanism 292 is pivotally connected to cross bar 254 of treadbase 226 and cross bar 256 of base frame 224 and generally opposite lift mechanism 290. That is, lift mechanism 292 is positioned between side rail 230 and the Y rotation axis near the rear end portion of treadbase 226. Lift mechanism 294 is pivotally connected to cross bar 254 and cross bar 256 and generally opposite lift mechanism 288. That is, lift mechanism 294 is positioned between side rail 228 and the Y rotation axis near the rear end portion of treadbase 226.

[0082] As noted above, lift mechanisms 288, 290, 292, 294 are connected to treadbase 226 and base frame 224 such that when one or more of lift mechanisms 288, 290, 292, and 294 extend or retract, treadbase 226 tilts, inclines, declines, turns, and/or translates relative to base frame 224. For instance, operation of lift mechanisms 288, 290, 292, and 294 can produce a rotation of treadbase 226 about the X rotation axis, the Y rotation axis, and/or the Z rotation axis or translate treadbase 226 up or down. As illustrated, first and second ends of lift mechanisms 288, 290, 292, and 294 are connected to base frame 224 and treadbase 226 by way of brackets similar to the brackets described in relation to Figures 9 and 10. As lift mechanisms 288, 290, 292,294 extend and retract, the ends of the lift mechanisms connected to base frame 224 and treadbase 226 pivot on the pins within the brackets and the brackets are able to rotate relative to cross bar or frame to which they are attached. In this manner, treadbase 226 can move in any number of directions relative to base frame 224.

[0083] In the illustrated embodiment, operation of lift mechanisms 288, 290, 292, and/or 294, independently or in combination, can facilitate various different movements of treadbase 226. More particularly, lift mechanisms 288, 290, 292 and 294 can tilt, incline, decline, and/or turn treadbase 226 relative to base frame 224. For instance, extension of lift mechanisms 288, 290 to an extended position and/or retraction of lift mechanisms 292, 294 to a retracted position rotates treadbase 226 about the X rotation axis such that at least a portion of the front end portion of treadbase 226 is positioned above the rear end portion of treadbase 226. Extension of lift mechanisms 288,294 and/or retraction of lift mechanisms 290, 292 rotates treadbase 226 about the Y rotation axis such that at least a portion of side rail 228 is positioned above side rail 230. Retraction of lift mechanism 294 below lift mechanisms 288, 290, and 292 rotates treadbase 226 about the Z rotation axis such that at least a portion of the rear end portion of treadbase 226 turns toward side rail 228. The retraction of lift mechanism 294 also rotates treadbase 226 about the Y rotation axis and the X rotation axis such that at least a portion of the rear end portion of treadbase 226 is positioned lower than the front end portion of treadbase 226 and at least a portion of side rail 228 is positioned lower than side rail 230.

[0084] In addition, extension of lift mechanisms 288, 290, 292, and 294 to an extended position can translate or move treadbase 226 away from base frame 224. Retraction of lift mechanisms 288, 290, 292, and 294 can translate or move treadbase 226 closer to base frame 224. Moreover, operation of lift mechanisms 288, 290, 292, and 294 in different combinations can move treadbase 226 such that treadbase 226 inclines/declines, tilts, translates and/or turns at the same time. Thus, lift mechanisms 288, 290, 292, and 294 can move treadbase 226 relative to base frame 224 in a variety of different directions.

[0085] Attention is now directed to Figure 1 IB which illustrates a treadbase 326 and a base frame 324 that may be used in connection with exercise system 10 in place of tread base 26 and base frame 24 according to another embodiment. Specifically, Figure 1 IB illustrates a bottom view of treadbase 326 and base frame 324. As seen, treadbase 326 and base frame 324 are similar to treadbase 226 and base frame 224. For example, treadbase 326 and base frame 324 are connected via lift mechanisms 388, 390, 392, and 394 similar to lift mechanisms 288, 290, 292, and 294. However, treadbase 326 is also pivotally connected to base frame 324 by a ball joint connection assembly 370.

[0086] In the illustrated embodiment, base frame 324 includes a cross bar 352 and a cross bar 356 near opposing ends of base frame 324. Base frame 324 also includes a cross member 372 extending between cross bar 356 and cross bar 352. Treadbase includes a cross bar 350 extending between the front portions of side rails 328, 330. A cross bar 354 extends between the distal portions of side rails 328, 330. A cross member 374 is located between cross bar 350 and cross bar 354 and extends between side rails 328, 330. Cross member 374 is illustrated extending across and over cross member 372 such that cross members 372 and 374 are generally perpendicular to one another.

[0087] Similar to ball joint connection assembly 70, ball joint connection assembly 370 includes a ball member 376 connected to cross member 372 and a ball socket 378 connected to cross member 374. An X rotation axis is illustrated generally perpendicular to a longitudinal axis of treadbase 326 and passing through ball joint connection assembly 370. A Y rotation axis is illustrated generally orthogonal to the X rotation axis and parallel to the longitudinal axis of treadbase 326. A Z rotation axis is illustrated generally orthogonal to both the X rotation axis and the Y rotation axis.

[0088] Similar to treadbase 226 and base frame 224, treadbase 326 and treadbase 324 include four lift mechanisms, two lift mechanisms 388, 390 at the front end portion of treadbase 326 and two lift mechanisms 392, 394 at the rear end portion of treadbase 326. Each lift mechanism 388, 390, 392, 394 is illustrated as a mechanical linear actuator. As explained in more detail below, lift mechanisms 388, 390, 392, 394 are connected to treadbase 326 and base frame 324 such that when one or more of lift mechanisms 388, 390, 392, and 394 extend or retract, treadbase 326 tilts, inclines, declines, turns, and/or translates relative to base frame 324.

[0089] Lift mechanisms 388, 390 are illustrated pivotally connected to cross bar 350 of treadbase 326 and cross bar 352 of base frame 324. Lift mechanism 388 is positioned between the Y rotation axis and side rail 328 and is generally offset from ball joint connection assembly 370, the Y rotation axis, and cross member 372. Lift mechanism 390 is positioned between the Y rotation axis and side rail 330 and is generally offset from ball joint connection assembly 370, the Y rotation axis, and cross member 372. Lift mechanism 392 is pivotally connected to cross bar 354 of treadbase 326 and cross bar 356 of base frame 324 and is generally opposite lift mechanism 390. That is, lift mechanism 392 is positioned near the rear end portion of treadbase 326 and between side rail 330 and the Y rotation axis. Lift mechanism 394 is pivotally connected to cross bar 354 of treadbase 326 and cross bar 356 of base frame 324 and is generally opposite lift mechanism 388. That is, lift mechanism 394 is positioned near the rear end portion of treadbase 326 and between side rail 328 and the Y rotation axis. [0090] As noted above, lift mechanisms 388, 390, 392, 394 are connected to treadbase 326 and base frame 324 such that when one or more of lift mechanisms 388, 390, 392, and 394 extend or retract, treadbase 326 tilts, inclines, declines, and/or turns relative to base frame 324. For instance, each of lift mechanisms 388, 390, 392, 394 are positioned at a distance from the X rotation axis, the Y rotation axis, and the Z rotation axis such that operation of lift mechanisms 388, 390, 392, and 394 can produce a rotation of treadbase 326 about the X rotation axis, the Y rotation axis, and/or the Z rotation axis. As illustrated, first and second ends of lift mechanisms 388, 390, 392, and 394 are connected to base frame 324 and treadbase 326 by way of brackets similar to brackets described in relation to Figures 9 and 10.

[0091] Lift mechanisms 388, 390, 392, and/or 394 can move treadbase 326 in variety of different directions. More particularly, lift mechanisms 388, 390, 392, 394 can move treadbase 326 such that treadbase 326 inclines, declines, tilts, and/or turns relative to base frame 324. For instance, extension of lift mechanisms 388, 390 to an extended position and/or retraction of lift mechanisms 392, 394 to a retracted position rotates treadbase 326 about the X rotation axis such that at least a portion of the front end portion of treadbase 326 is positioned above the rear end portion of treadbase 326. Extension of lift mechanisms 388, 394 and/or retraction of lift mechanisms 390, 392 rotates treadbase 326 about the Y rotation axis such that at least a portion of side rail 328 is positioned above side rail 330. Moreover, operation of lift mechanisms 388, 390, 392, and 394 in different combinations can move treadbase 326 such that treadbase 326 inclines, declines, tilts, and/or turns at the same time. Thus, lift mechanisms 388, 390, 392, 394 can rotate treadbase 326 relative to base frame 324 in a variety of different directions.

[0092] Ball member 376 of ball joint connection assembly 370 is rotatably received in a recess 380 formed in ball socket 378 and retained therein by a bearing shoulder 381. As lift mechanisms 388, 390, 392, and 394 rotate treadbase 326 about the X, Y, and/or Z rotation axes, treadbase 326 pivots on ball member 376. In this manner, treadbase 326 can rotate about an infinite number of axes extending through ball member 376 such that treadbase 326 moves in various directions relative to base frame 324.

[0093] Figure 12 illustrates a treadbase 426 and a base frame 424 that may be used in connection with exercise system 10 in place of treadbase 26 and base frame 24 according to another embodiment. Specifically, Figure 12 illustrates a bottom view of treadbase 426 and base frame 424. Treadbase 426 may be pivotally connected to upright support structure 18 (Figures 1 and 14) such that treadbase 426 can rotate about an X rotation axis. The X rotation axis is illustrated generally perpendicular to a longitudinal axis of treadbase 426 so that the X rotation axis passes through upright support structure 18 (Figure 14).

[0094] Treadbase 426 includes a pair of side rails 428, 430, each having a front portion proximal to upright support structure 18 and a distal portion distal from upright support structure 18. Treadbase 426 includes a cross bar 450 extending between side rails 428, 430 near a front portion of treadbase 426. As shown, base frame 424 includes a cross bar 452 near a front end portion of base frame 424. Base frame 424 is connected to treadbase 426 via a lift mechanism 446.

[0095] A deck assembly 402 is located between side rails 428, 430 of treadbase 426. More particularly, deck assembly 402 is pivotally connected to side rails 428, 430 of treadbase 426. Deck assembly 402 includes a pair of side members 404, 406 extending generally parallel a longitudinal axis of treadbase 426, each having a front portion proximal to upright support structure 18 and a distal portion distal from upright support structure 18. Side member 404 is illustrated generally parallel side rail 428 of treadbase 426. Side member 406 is illustrated generally parallel side rail 430. Deck assembly 402 further includes front and rear pulleys 432, 434 positioned between and supported by side members 404,406 with a continuous belt 436 extending between and about front and rear pulleys 432, 434, respectively. A deck 438 is connected to deck assembly 402 and supports the upper run of belt 436. Like treadbase 26, at least one of front pulley 432 and rear pulley 434 may be mechanically connected to electric drive motor 40.

[0096] As illustrated in Figure 12, side member 404 of deck assembly 402 is pivotally connected to side rail 428 via a hinged connection member 420 that substantially extends along a length of side member 404. Hinged connection member 420 includes a first wing member connected to side member 404, a second wing member connected to side rail 428, and a shaft or pin that pivotally connects the first and second wing members. A Y rotation axis is illustrated generally collinear with the shaft or pin of the hinged connection member 420. The Y rotation axis is also orthogonal to the X rotation axis.

[0097] In the illustrated embodiment, a lift mechanism 446 is connected between treadbase 426 and base frame 424 and lift mechanisms 408, 410 are connected between deck assembly 402 and side rail 430 of treadbase 426. Lift mechanism 446 is illustrated as a mechanical linear actuator near the front end portion of treadbase 426. Lift mechanism 446 is connected to cross bar 450 of treadbase 426 and cross bar 452 of base frame 424. Lift mechanism 446 is positioned such that when lift mechanism 446 extends or retracts, treadbase 426 inclines or declines relative to base frame 424. More particularly, operation of lift mechanism 446 can produce a rotation of treadbase 426 about the X rotation axis.

[0098] As illustrated, a first end 454 of lift mechanism 446 is pivotally connected to cross bar 450 by way of a bracket 458 while a second end 456 of lift mechanism 446 is connected to cross bar 452 by way of a bracket 460. Each of brackets 458, 460 are generally V-shaped with a pin that can be secured between the two extending sides. The first and second ends 454, 456 of lift mechanism 446 are able to pivot on the pins within brackets 458, 460 about axes that are generally transverse to a longitudinal axis of treadbase 426. The bottom cross portion of brackets 458, 460 may be fixedly or pivotally attached to cross bar 450, 452, respectively. Lift mechanisms 408, 410 are illustrated as mechanical rotary actuators, each including a drive mechanism, a lift arm, and a motor housing. In response to one or more control signals, the drive mechanism rotates the lift arm between a raised position and a lowered position. Lift mechanisms 408, 410 are illustrated generally opposite hinged connection member 420 on side rail 428. Lift mechanisms 408,410 are connected to treadbase 426 and deck assembly 402 such that when lift mechanisms 408, 410 raise or lower, deck assembly 402 tilts relative to treadbase 426.

[0099] More particularly, operation of lift mechanisms 408, 410 can produce a rotation of deck assembly 402 about the Y rotation axis. As illustrated, a first end 412 of lift mechanism 408 is pivotally connected to side member 406 of deck assembly 402 by way of a bracket 468 while a second end 414 of lift mechanism 408 is attached to side rail 430. A first end 416 of lift mechanism 410 is pivotally connected to side member 406 of deck assembly 402 by way of a bracket 470 while a second end 418 of lift mechanism 410 is attached to side rail 430. Each of brackets 468, 470 are generally V-shaped with a pin that can be secured between two extending sides. The first ends 412, 416 of lift mechanisms 408, 410 pivot on and/or slide over the pins within brackets 468, 470 about axes that are generally parallel to a longitudinal axis of treadbase 426. The bottom cross portion of brackets 468, 470 are fixedly attached to side member 404.

[0100] In the illustrated embodiment, lift mechanisms 446, 408, 410 can facilitate movement of treadbase 426 and/or deck assembly 402 in various different directions. More particularly, lift mechanism 446 can rotate treadbase 426 and deck assembly 402 such that treadbase 426 and deck assembly 402 incline and decline relative to base frame 424. For instance, retraction of lift mechanism 446 to a retracted position rotates treadbase 426 about the X rotation axis such that the front end portion of treadbase 426 is positioned below the rear end portion of treadbase 426. Extension of lift mechanism 446 to an extended position rotates treadbase 426 about the X rotation axis such that the front end portion of treadbase 426 is positioned above the rear end portion of treadbase 426.

[0101] Lift mechanisms 408, 410 can rotate deck assembly 402 such that deck assembly 402 tilts relative to treadbase 426. Movement of lift mechanisms 408, 410 to a raised position rotates deck assembly 402 about the Y rotation axis or hinged connection member 420 to a first tilted position, wherein side member 406 is positioned above side member 404 of deck assembly 402. Movement of lift mechanisms 408, 410 to a lowered position rotates deck assembly 402 to a second tilted position, wherein side member 406 IS positioned below side member 404 of deck assembly 402.

[0102] Moreover, operation of lift mechanisms 408, 410 and lift mechanism 446 in combination can move treadbase 426 and/or deck assembly 402 such that deck assembly 402 inclines/declines and tilts at the same time. Thus, lift mechanisms 408, 410 and lift mechanism 446 can rotate treadbase 426 and deck assembly 402 in various different directions.

[0103] Figure 13 illustrates a cut away view of lift mechanism 408. As illustrated, first end 412 of lift mechanism 408 includes an elongated slot 413 extending therethrough that receives the pin of bracket 468. As lift mechanism 408 moves to a raised position or to a lowered position, the pin of bracket 458 translates within the elongated slot 413 of the first end 412 of lift mechanism 408. In this manner, side member 406 travels along an arcuate path as it rotates about the Y rotation axis or hinged connection member 420. As lift mechanisms 408, 410 rotate deck assembly 402 about the Y rotation axis or hinged connection member 420, first ends 412, 416 pivot on the pins within brackets 458, 460. In this manner, first ends 412, 416 are able to pivot about axes that are generally parallel to a longitudinal axis of deck assembly 402. As a result, deck assembly 402 is rotatable relative to side rails 428, 430 of treadbase 426.

[0104] Figure 14 illustrates deck assembly 402 in a first tilted position. As shown, upon rotating lift mechanisms 408, 410 to a raised position, lift mechanisms 408, 410 move side member 406 of deck assembly 402 to a higher position than side member 404 and side rail 430 such that deck assembly 402 is tilted toward side rail 428.

[0105] Figure 15 illustrates a treadbase 526 and a base frame 524 that may be used in connection with exercise system 10 in place of treadbase 26 and base frame 24 according to another embodiment. Specifically, Figure 15 illustrates a bottom view of treadbase 526 and base frame 524. Treadbase 526 may be pivotally connected to upright support structure 18 (Figure 1) such that treadbase 526 can rotate about an X rotation axis. The X rotation axis is illustrated as being generally perpendicular to a longitudinal axis of treadbase 526 so that the X rotation axis would pass through upright support structure 18 when treadbase 526 is connected thereto.

[0106] Treadbase 526 includes a pair of generally parallel side rails 528, 530, each having a front portion proximal to upright support structure 18 and a distal portion distal from upright support structure 18. Treadbase 526 includes a cross bar 550 at a front portion of treadbase 526 extending between side rails 528, 530. As shown, base frame 524 includes a cross bar 552 near a front end portion of base frame 524. Base frame 524 is connected to treadbase 526 via a lift mechanism 546.

[0107] A deck assembly 502 is illustrated pivotally connected to treadbase 526 between side rails 528, 530. Deck assembly 502 includes a pair of side members 504, 506 extending generally parallel a longitudinal axis of treadbase 526, each having a front portion proximal to upright support structure 18 (not shown) and a distal portion distal from upright support structure 18. Deck assembly 502 further includes front and rear pulleys 532, 534 positioned between and supported by side members 504, 506 with a continuous belt 536 extending between and about front and rear pulleys 532, 534, respectively. A deck 538 is connected to deck assembly 502 and supports the upper run of belt 536. Like treadbase 26, at least one of front pulley 532 and rear pulley 534 may be mechanically connected to electric drive motor 40.

[0108] A Y rotation axis is illustrated generally orthogonal to the X rotation axis and substantially parallel to a longitudinal axis of deck assembly 502. A Z rotation axis is illustrated generally orthogonal the X rotation axis and the Y rotation axis. An XI rotation axis is illustrated generally perpendicular to a longitudinal axis of deck assembly 502 and generally parallel to the X rotation axis. [0109] In the illustrated embodiment, lift mechanism 546 is connected between treadbase 526 and base frame 524 and is illustrated as a mechanical linear actuator near the front end portion of treadbase 526. Lift mechanism 546 is connected to cross bar 550 of treadbase 526 and cross bar 552 of base frame 524. Lift mechanism 546 is positioned such that when lift mechanism 546 extends or retracts, treadbase 526 inclines or declines relative to base frame 524. For instance, lift mechanism 446 is connected between cross bar 550 and cross bar 552 at a distance from the X rotation axis such that operation of lift mechanism 546 can produce a rotation of treadbase 526 about the X rotation axis. In addition, lift mechanism 446 is generally in line with the Y rotation axis such that operation of lift mechanism 446 does not produce a rotation of treadbase 526 about the Y rotation axis.

[0110] Lift mechanisms 588, 590, 592, and 594 are connected between deck assembly 502 and treadbase 526 and are illustrated as mechanical rotary actuators connecting deck assembly 502 to treadbase 526. Lift mechanism 588 is connected between side member 504 of deck assembly 502 and side rail 528 of base frame 524 toward the front end portion of treadbase 526 (e.g., between the X rotation axis and cross bar 550). Lift mechanism 590 is connected between side member 504 of deck assembly 502 and side rail 528 of base frame 524 toward the rear end portion of treadbase 526. Lift mechanism 594 is connected between side member 506 of deck assembly 502 and side rail 530 of base frame 524 generally opposite lift mechanism 588. Lift mechanism 592 is connected between side member 506 of deck assembly 502 and side rail 530 of base frame 524 generally opposite lift mechanism 590.

[0111] Lift mechanisms 588, 590, 592, and 594 are generally positioned such that when one or more of lift mechanisms 588, 590, 592, and 594 raises or lowers, deck assembly 502 tilts, rotates, or a combination of both relative to treadbase 526. For instance, operation of lift mechanisms 588, 590, 592, and 594 can produce a rotation of deck assembly 502 about the Y rotation axis and/or the X' rotation axis. As illustrated, each of lift mechanisms 588 and 590, have a first end pivotally connected to side member 504 by way of a bracket and a second end attached to side rail 528. Lift mechanisms 592, 594 are illustrated generally opposite lift mechanisms 588, 590. More particularly, each of lift mechanisms 592, 594 have a first end pivotally connected to side member 506 by way of a bracket and a second end attached to side rail 530. [0112] In the illustrated embodiment, lift mechanisms 546, 588, 590, 592, 594 can move treadbase 526 and/or deck assembly 502 in various directions. More specifically, lift mechanism 546 can rotate treadbase 526 and deck assembly 502 such that treadbase 526 and deck assembly 502 incline/decline relative to base frame 524. Lift mechanisms 588, 590, 592, 594 can move deck assembly 502 such that deck assembly 502 inclines/declines, tilts, and/or translates relative to treadbase 526. For instance, retraction of lift mechanism 546 to a retracted position rotates treadbase 526 about the X rotation axis such that the front end portion of treadbase 526 is positioned below the rear end portion of treadbase 526. Extension of lift mechanism 546 to an extended position rotates treadbase about the X rotation axis such that the front end portion of treadbase 526 is positioned above the rear end portion of treadbase 526. Moreover, movement of lift mechanisms 588, 590 to a raised position and/or movement of lift mechanisms 592, 594 to a lowered position rotates deck assembly 502 about the Y rotation axis such that side member 504 is positioned above side member 506 of deck assembly 502. Movement of lift mechanisms 592, 594 to a raised position and/or movement of lift mechanisms 588, 590 to a lowered position rotates deck assembly 502 such that side member 504 is positioned below side member 506 of deck assembly 502. In addition, movement of lift mechanisms 588, 594 to a raised position and/or movement of lift mechanisms 590, 594 to a lowered position rotates deck assembly 502 about the X' rotation axis such that a front end portion of deck assembly 502 is above a rear end portion of deck assembly 502. Further, movement of lift mechanisms 588, 590, 592, and 594 simultaneously to a raised position or a lowered position can translate deck assembly 502 away from or toward treadbase 526. Moreover, operation of lift mechanisms 588, 590, 592, 594 and lift mechanism 546 in combination can move treadbase 526 and/or deck assembly 502 such that treadbase 526 inclines/declines and deck assembly 502 inclines/declines, tilts, and/or translates at the same time. Thus, lift mechanisms 588, 590, 592, 594 and lift mechanism 546 can move treadbase 526 and deck assembly 502 in various directions.

INDUSTRIAL APPLICABILITY

[0113] In general, embodiments of the present disclosure relate to exercise systems that incline, decline, and/or tilt side-to-side to provide variety in an exercise workout. The exercise systems may be any type of exercise system, such as a treadmill, an exercise cycle, a Nordic style ski exercise system, a rower, a stepper, a hiker, a climber, an elliptical, or a striding exercise system. The inclining, declining, and tilting capabilities of the disclosed exercise systems allow the exercise systems to simulate outdoor terrain or otherwise vary the operation of the exercise system. For instance, a treadmill may have two or more lift mechanisms that rotate the treadbase about two or more rotation axes to simulate a descent down a hill, an ascent up a hill, and/or traversing a canyon wall or river bank.

[0114] While exercise devices have included inclining and declining mechanisms, these inclining and declining mechanisms have typically been insufficient to simulate outdoor terrain or to motivate a user. For instance, in order to simulate a canyon run, these

mechanisms allow a user to ambulate on a level surface or an inclined surface. However, these mechanisms do not allow a user to ambulate on a surface that inclines, declines, and cross slopes or tilts like a typical canyon trail would.

[0115] In general, the structure of the present exemplary disclosure provides an exercise system that substantially simulates outdoor terrain in response to one or more control signals. For example, a treadbase may be pivotally connected to a base frame via a ball joint connection assembly. One or more lift or tilt mechanisms connected between the base frame and the treadbase may cause the treadbase to rotate relative to the base frame and via the ball joint connection assembly. As a result, the treadbase can rotated in various directions relative to the base frame to substantially simulate outdoor terrain. That is, the one or more lift or tilt mechanisms can be operated to selectively rotate the treadbase about the ball joint connection assembly to incline, decline, and/or tilt the treadbase.

[0116] The ball joint connection assembly allows the treadbase to rotate about an infinite number of rotation axes extending through the ball joint connection assembly. In some configurations, one or more of the rotation axes may be centered relative to the treadbase. For instance, one rotation axis may be centered between the side rails of the treadbase. In other configurations, one or more of the rotation axes may be offset relative to a center of the treadbase. For instance, one rotation axis may be offset such that it is closer to one side rail or the other side rail of the treadbase.

[0117] Furthermore, according to some configurations, the ball joint connection assembly may be a ball and socket joint including a ball member and a ball socket connected to the treadbase or the base frame. For instance, the ball member may be connected to the treadbase and the ball socket may be connected to the base frame. The ball joint connection assembly may be centered relative to the treadbase. In other configurations, the ball joint connection assembly may be offset relative to the center of the treadbase. For instance, the ball joint connection assembly may be offset such that the ball joint connection assembly is closer to the front end than the rear end portion of the treadbase. In some configurations, the ball joint connection assembly may be a universal joint, a saddle joint, a pivotal rocker, or other suitable type of connection assembly. Additionally, the ball joint connection assembly allows the treadbase to rotate about a number of rotation axes relative to the base frame. In this manner, the treadbase can simulate outdoor terrain by inclining, declining, tilting, and/or turning relative to the base frame.

[0118] Pivoting connections between the lift/tilt mechanisms and the base frame and/or treadbase allow the treadbase to tilt, incline, or decline without bending,

overextending, or otherwise damaging the lift/tilt mechanisms. In addition, in some configurations, the treadbase includes features to control torsion of the treadbase. For example, the treadbase may have a specific stiffness, dimensions, and/or counter-weight systems to resist twisting of the treadbase.

[0119] In some configurations, the exercise system includes two, three, four, five, or any suitable number of lift mechanisms with or without a ball joint connection assembly. For example, the exercise system can include two lift mechanisms connected to a front end portion of the treadbase and a third lift mechanism connected to a side rail of the treadbase. The lift mechanisms may be linear actuators, rotary actuators, multi-turn actuators, quarter- turn actuators, lever actuators, mechanical actuators, pneumatic actuators, electric actuators, hydraulic actuators, ball screw mechanisms, or combinations thereof.

[0120] Lift mechanisms may be connected to any portion of a base frame and/or treadbase by way of any suitable connection. For example, lift mechanisms may be connected to the base frame and/or the treadbase by way of ball joints, clevis joints, pin connections, hinges, brackets, or suitable other connection types. In addition, lift mechanisms may be connected to the sides, front, top, and/or bottom of the base frame and/or the treadbase.

[0121] Operation of the lift/tilt mechanisms moves the treadbase about different rotation axes to simulate outdoor terrain. For example, in one configuration, extension of a first lift mechanism and extension of a second lift mechanism can rotate the treadbase about a first rotation axis to incline the treadbase. Further, retraction of the first lift mechanism and retraction of the second lift mechanism can rotate the treadbase about the first rotation axis to decline the treadbase. In addition, extension or retraction of the first lift mechanism and retraction or extension of the second lift mechanism can rotate the treadbase about a second rotation axis to tilt the treadbase to one side or the other. Moreover, various extension and retraction combinations may be used to rotate the treadbase about both the first and second rotation axes to both incline/decline the treadbase as well as to tilt the treadbase.

[0122] Optionally, the exercise system may include a deck assembly that is rotatable relative to the treadbase. In some configurations, the deck assembly may be pivotally connected to the treadbase by way of one or more pivot connections or hinged connections. In one configuration, the hinged connection may be any suitable type of hinge. For example, the hinged connection may be a continuous hinge, a butt hinge, a butterfly hinge, a flush hinge, or a barrel hinge. In some embodiments, the deck assembly may be pivotally connected to the treadbase by way of lift mechanisms on opposing side members of the deck assembly.

[0123] Accordingly, one or more lift mechanisms may be connected between a base frame and a treadbase and/or between one or more treadbase side rails and a deck assembly. The one or more lift mechanisms may be used to incline, decline, and/or tilt the treadbase relative to the base frame. The one or more lift mechanisms may also be used to incline, decline, and/or tilt the deck assembly relative to the treadbase in order to substantially simulate outdoor terrain.

Claims

CLAIMS WHAT IS CLAIMED IS:

1. An exercise system that simulates outdoor terrain, the exercise system comprising: a treadmill that substantially simulates outdoor terrain in response to one or more control signals, wherein the treadmill comprises:

a base frame;

a treadbase having a first end, a second end, a first side, and a second side, the treadbase being selectively rotatable about a first rotation axis and about a second rotation axis;

a ball joint connection assembly pivotally connecting the treadbase to the base frame, wherein the ball joint connection assembly enables the treadbase to rotate about the first rotation axis and the second rotation axis;

a first lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about the first rotation axis; and

a second lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about the second rotation axis.

2. An exercise system as recited in claim 1, wherein the first lift mechanism comprises a mechanical linear actuator connected to the base frame and the first end of the treadbase, and wherein the first lift mechanism selectively extends and retracts to rotate the treadbase about the first rotation axis.

3. An exercise system as recited in claim 2, wherein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about the first rotation axis such that at least a portion of the first end of the treadbase is positioned above or below the second end of the treadbase.

4. An exercise system as recited in claim 2, wherein the first lift mechanism selectively extends and retracts to further rotate the treadbase about at least one of the second rotation axis or a third rotation axis.

5. An exercise system as recited in claim 4, wherein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about the second rotation axis such that at least a portion of the first side of the treadbase is positioned above or below the second side of the treadbase.

6. An exercise system as recited in claim 1, wherein the second lift mechanism comprises a mechanical linear actuator connected to the base frame and the first side of the treadbase, and wherein the second lift mechanism selectively extends and retracts to rotate the treadbase about the second rotation axis.

7. An exercise system as recited in claim 6, wherein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about the second rotation axis such that at least a portion of the first side of the treadbase is positioned above or below the second side of the treadbase.

8. An exercise system as recited in claim 1, wherein the second lift mechanism comprises a mechanical linear actuator connected to the base frame and the first end of the treadbase, and wherein the second lift mechanism selectively extends and retracts to rotate the treadbase about at least one of the first rotation axis, the second rotation axis, and a third rotation axis generally orthogonal to the first rotation axis and the second rotation axis.

9. An exercise system as recited in claim 6, wherein, in response to the one or more control signals, the second lift mechanism selectively rotates the treadbase about the first rotation axis such that at least a portion of the first end of the treadbase is positioned above or below the second end of the treadbase.

10. An exercise system as recited in claim 1, wherein the first lift mechanism and the second lift mechanism are pivotally connected between the base frame and the first end of the treadbase.

11. An exercise system as recited in claim 1 , further comprising:

a third lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the third lift mechanism selectively rotates the treadbase about at least one of the first rotation axis, the second rotation axis, and a third rotation axis.

12. An exercise system as recited in claim 11, further comprising:

a fourth lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the fourth lift mechanism selectively rotates the treadbase about at least one of the first rotation axis, the second rotation axis, and the third rotation axis.

13. An exercise system as recited in claim 12, wherein, in response to one or more control signals, the first lift mechanism, the second lift mechanism, the third lift mechanism, and the fourth lift mechanism further selectively move the treadbase between a raised position relative to the base frame and a lower position relative to the base frame.

14. An exercise system as recited in claim 1 , wherein the ball joint connection assembly comprises a ball socket including a recess formed therein and a bearing shoulder, and a ball member rotatably received in the recess of the ball socket and retained therein by the bearing shoulder.

15. An exercise system as recited in claim 14, wherein the ball member is connected to a cross member of the base frame and the ball socket is connected to a cross member of the treadbase.

16. An exercise device that simulates outdoor terrain, the exercise system comprising: a base frame;

a treadbase having a first end, a second end, a first side, and a second side, the treadbase being selectively rotatable about a first rotation axis and a second rotation axis; a first lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the first lift mechanism selectively rotates the treadbase about at least one of the first rotation axis and the second rotation axis; a second lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the second lift mechanism selectively rotates the treadbase about at least one of the first rotation axis and the second rotation axis;

a third lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the third lift mechanism selectively rotates the treadbase about at least one of the first rotation axis and the second rotation axis; and

a fourth lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the fourth lift mechanism selectively rotates the treadbase about at least one of the first rotation axis and the second rotation axis.

17. An exercise device as recited in claim 16, wherein at least one of the first lift mechanism, the second lift mechanism, the third lift mechanism, and the fourth lift mechanism comprises a mechanical linear actuator that extends and retracts to selectively rotate the treadbase about at least one of the first rotation axis and the second rotation axis.

18. A treadmill that substantially simulates outdoor terrain in response to one or more control signals, wherein the treadmill comprises:

a base frame;

a treadbase having a first end, a second end, a first side, and a second side, the treadbase being selectively movable relative to base frame between a declined position, a neutral position, and an inclined position;

a deck assembly pivotally connected to the treadbase, the deck assembly being selectively movable relative to the treadbase between a first tilted position and a second tilted position;

a first lift mechanism pivotally connected between the base frame and the treadbase, wherein, in response to one or more control signals, the first lift mechanism selectively moves the treadbase and the deck assembly between the declined position, the neutral position, and the inclined position; and

a second lift mechanism pivotally connected between the first side of the treadbase and the deck assembly, wherein, in response to one or more control signals, the second lift mechanism selectively moves the deck assembly between the first tilted position and the second tilted position.

19. A treadmill as recited in claim 18, further comprising:

a hinge member pivotally connecting the second side of the treadbase and the deck assembly.

20. A treadmill as recited in claim 18, further comprising:

a third lift mechanism pivotally connected between the first side of the treadbase and the deck assembly, wherein, in response to one or more control signals, the third lift mechanism selectively moves the deck assembly between the first tilted position and the second tilted position.