The present invention relates to leg press exercise equipment.
U.S. Pat. No. 5,554,086 to Habing describes a leg press machine in which a user sits and presses down on two foot pads to lift their seat. Unfortunately, Habing has several limitations, including the fact that its seat is not adjustable back and forth on the support below. As such, shorter users are forced to begin the exercise with their legs comparatively more straightened out, whereas taller users will be forced to begin the exercise with their legs comparatively more crunched up towards their belly. As such, Habing is not adjustable to accommodate users having different body types and dimensions. In addition, Habing's seat is inclined at a steep angle (approximately 30 degrees) to the ground both when starting and when finishing the leg press exercise. This geometry has the disadvantage of making the resistance on the user's legs become too heavy too quickly (as the user straightens their legs).
The present system provides an improved leg press exercise machine ideally suited for attachment to a cable weight stack. In preferred embodiments, the present leg press machine comprises: a main frame; a first rotating bar connected at one end to the main frame; a second rotating bar connected at one end to the main frame; a support assembly connected to each of the first and second rotating bars, wherein rotation of the first and second rotating bars causes the support assembly to move with respect to the main frame; a seat support bar; and a seat mounted onto the seat support bar.
Advantageously, the preferred length of the present rotating bars combined with their preferred angle to the vertical (when the device is sitting in its rest position) provides a preferred range of motion for most users in which the resistance to motion is neither too high nor too low. As a result, the overwhelming majority of users receive an optimal “push back” from the machine over a preferred range of motion. In various preferred embodiments, the rotating bars are disposed at an angle from 0 to 30 degrees, and more preferably 5 to 15 degrees, and most preferably about 10 degrees to the vertical when the machine is in its rest position.
Advantageously, the support assembly holds the seat support bar at a downward angle from a line passing through the locations where the first and second rotating bars are connected to the support assembly. Preferably, this downward angle is between 20 and 60 or more preferably between 30 to 50 degrees. In addition, the seat is preferably mounted to sit horizontally onto the seat support bar. Advantageously, the downward angle of the seat support bar defines the angle of the seat but does not define its trajectory of movement. Instead, the trajectory of the seat moves at a shallower angle than the seat is mounted. An advantage of having the seat support bar be angled to the horizontal is that the seat is biased to move forwardly, thereby eliminating the need for a gas spring or other system to return the seat to a forward position after a user has moved it backwards on the support bar. Moreover, in contrast to the Habing system, the present system's rotating bars are also longer (and therefore move through a much smaller angle of curvature from the start to the end of the leg press exercise). Together, all this has the advantage of preventing the user from swinging too far upwardly during the exercise. As a result, the combined weight of the user and the support frame does not become too heavy too quickly as the user straightens their legs during the leg press exercise. In addition, the present geometry also keeps the user generally parallel to the ground throughout the exercise.
In various preferred aspects of the present system, the rotating bars are angled 0 to 30 degrees, and more preferably 5 to 15 degrees (and most preferably about 10 degrees) to the vertical at the start of the leg press exercise. The greater this angle, the heavier the exercise gets. Conversely, the shallower the angle, the bigger the overall machine becomes. As can be seen, the first and second rotating bars are spaced significantly farther apart than in the Habing system. As a result of this different physical design, the entire present structure is stronger (due to both lower torque loading both where the rotating bars connect to the main frame and where they connect to the seat support bar).
As mentioned above, the seat is adjustably mounted onto the seat support bar such that the seat is moveable forwards and backwards along the seat support bar. This has the advantage of accommodating users of different body shapes and leg lengths. As such, users with longer legs do not have to start the leg press with their legs too crunched up towards their chest (which would put unnecessary stress on their legs and strain on their lower back), and users with shorter legs do not have to start the leg press with their legs too extended (thereby limiting the full range of motion that they can achieve with the device). An additional advantage of the adjustable seat is that a user can push themselves far enough away from the footplate to perform a calf raise exercise.
In preferred aspects, the support assembly is generally triangular in shape with the first and second rotating bars connected to first and second points of the triangle, and the seat support bar connected to the third point of the triangle.
The exercise machine also preferably includes full width footplate mounted to the main frame. Advantages of using a full width footplate are that the user can perform the leg press using a variety of foot positions (such as a narrower or wider stance, and with their feet positioned higher or lower relative to their hips). The footplate is advantageously positioned at a height such that the user's feet are positioned higher than the seat at the start (and optionally the end) of the leg press exercise. In addition, the top end of the first rotating bar is preferably positioned above the user's hips at the end of the leg press exercise. Taken together, this geometry has the advantage of preventing the resistance on the user's legs from becoming too heavy too quickly, thereby preventing unnecessary stress on the user's legs and unnecessary strain on the user's lower back.
Referring to the attached Figures, a leg press exercise machine 10 is provided. Leg press exercise machine 10 comprises: a main frame 20; a first rotating bar 30 connected at one end to main frame 20; a second rotating bar 40 connected at one end to main frame 20; a support assembly 50 is connected to first and second rotating bars 20 and 30, as shown. Rotation of first and second rotating bars 20 and 30 causes support assembly 50 to move with respect to main frame 20. This rotational movement of bars 20 and 30 can be seen by comparing
In accordance with the present system, support assembly 50 preferably holds seat support bar 60 at a downward angle. Specifically, as seen in
As seen in
A further advantageous feature of the present exercise machine is that seat 70 is adjustably mounted onto the seat support bar 60 such that seat 70 is moveable forwards and backwards along seat support bar 60 (i.e.: seat 70 can be moved back and forth along axis A1 to accommodate users of different leg lengths. Having the seat moveable along axis A1 at angle Θ2 to the horizontal will tend to return seat 70 to a forward position, thereby avoiding the need for a spring to pull the seat 70 forward when readjusting the position of seat 70 for different users.
First rotating bar 30 is pivotally connected to support assembly 50 at point 32 and is pivotally connected to frame 20 at point 34. Similarly, second rotating bar 40 is pivotally connected to support assembly 50 at point 42 and is pivotally connected to frame 20 at point 44. As can be seen in the Figures, first and second rotating bars 30 and 40 are positioned parallel to one another and remain parallel to one another when moved.
As seen most clearly in
The present leg press exercise machine 10 also includes a footplate 80 mounted to main frame 20. The novel positioning of footplate 80 provides advantages to the user in that unwanted stress on the user's legs and back is avoided. For example, footplate 80 are positioned at a height on main frame 20 such that the user's feet are positioned higher than seat 70 at the start position of the leg press exercise (see
Exercise machine 10 is ideally suited for use with a cable weight stack (weight stack not shown). Preferably, the weight stack is positioned in front or to the side of the seated user. A cable 90 can be connected from the weights being lifted to the bottom of seat support bar 60 (See
Preferably as well, the first and second rotating bars 30 and 40 are spaced significantly farther apart than in the Habing system. As a result, the entire structure is stronger (due to both lower torque loading both where the rotating bars connect to the main frame at 34 and 44, and also where the rotating bars 30 and 40 connect to the seat support bar at 32 and 42).
In addition to performing a leg press exercise, the user may also perform a calf press exercise as seen in
The present invention claims priority to U.S. Provisional Patent Application 62/644,829, of same title, filed Mar. 19, 2018, the entire disclosure of which is incorporated herein by reference in its entirety for all purposes.
Number | Name | Date | Kind |
---|---|---|---|
5106081 | Webb | Apr 1992 | A |
5366432 | Habing et al. | Nov 1994 | A |
5549533 | Olson et al. | Aug 1996 | A |
5554086 | Habing | Sep 1996 | A |
5570957 | Kuly et al. | Nov 1996 | A |
5628715 | Simonson | May 1997 | A |
6220993 | Sencil | Apr 2001 | B1 |
7794372 | Webber et al. | Sep 2010 | B1 |
7981011 | Batca | Jul 2011 | B1 |
20020013199 | Giannelli et al. | Jan 2002 | A1 |
20040009857 | Webb | Jan 2004 | A1 |
20040023762 | Lull | Feb 2004 | A1 |
20050020416 | Leipheimer | Jan 2005 | A1 |
20060148625 | Garner | Jul 2006 | A1 |
20160082315 | Carter et al. | Mar 2016 | A1 |
20170080287 | Jaquish | Mar 2017 | A1 |
Entry |
---|
International Searching Authority, International Search Report and Written Opinion for corresponding International Application No. PCT/US2019/021418, dated May 13, 2019, 9 pages. |
Number | Date | Country | |
---|---|---|---|
20190282848 A1 | Sep 2019 | US |
Number | Date | Country | |
---|---|---|---|
62644829 | Mar 2018 | US |