The present invention relates generally to footrests for vehicles that are similar to that of a motorcycle, bicycle, kids scooter or skibike (bicycle frame system with snow skis). More particularly, the present invention relates to articulated footrests that allow someone riding one of these types of vehicles to manually or automatically raise or lower their footrests for various important purposes, some of which are, balancing body weight when negotiating a sharp curve, having fun and looking stylish.
The above principle of footrest articulation and vehicle embodiment is well known, as is described in more than several of the issued patents discussed further below. Such vehicles utilize various methods to link the articulating footrest mechanism together and then to a vehicle, with such examples being cited in the related art discussed further below. However, the present articulating footrest invention differs from those of the prior art in that it utilizes horizontal and vertical arms with fulcrums to link the motion of the two separate footrests together so that they always articulate in unison and stay flat with the rider's foot. This is what adds excitement, style and safety to riding a vehicle with this invention attached to it at footrest level. Provided below is a discussion of the related art and its differences and distinctions from the present invention that the present inventor is aware of.
There are known a number of different types of articulating footrest systems for vehicles. Pat. Nos. U.S. Pat. No. 8,128,111B2 by Zike LLC discloses a 2-wheel vehicle classified as a “bicycle without a seat” in which the articulated footrests are also foot levers that the rider operates with their hips, legs and feet to propel the vehicle forward. Operating the footrest levers of this vehicle is very similar to how a human being uses a stair-stepping exercise devise at a gymnasium. It is probably a fun and safe vehicle to ride when articulating the foot levers up and down and moving forward in a straight line. It might not be as safe when turning though. Prior to a steep turn, the rider uses downward force on one of the footrests to articulate its opposing footrest into a safe “higher” position so that opposing footrest does not scrape the ground when turning. This is very similar to how a bicycle rider, just prior to tilting their vehicle and turning sharply, rotates one pedal to a safe higher position so it does not scrape the ground when they are in the turn, thus causing an overturn of the vehicle. When a bicycle pedal is in the higher position, it is a moderately-safe foot position for the rider to be in while turning sharply because both pedals stay relatively planar and flat to the level ground so the rider's foot can stay in connection with them better than if the pedals tilted forward or backward too much of a degree. On this vehicle by Zike LLC, the footrests do not work like the pedals of a bicycle and this causes a safety problem. When the rider has articulated one of the footrest levers to a higher position to avoid it from scraping the ground in a sharp turn that footrest points downwardly at a steep angle and is no longer planar and flat to the level ground. This makes the foot on that footrest unstable and rather vulnerable to slipping off, thus causing an overturn of the vehicle. Furthermore, when a rider's foot is unstable on a footrest the rider loses the ability to apply downward gravitational force that their body generates in a sharp turn to that footrest efficiently. Downward gravitational force on the footrests transfers through a vehicles frame to the movement facilitators and creates traction with the vehicle and riding surface. Having a foot flat and stable on a footrest makes turning a vehicle at all speeds safer and more fun.
Pat. Nos. EP2465760A1 by Totex Design Ltd also describes a 2-wheel vehicle classified as a “bicycle without a seat”. With this vehicle, the articulated footrests are also levers that the rider operates to generate forward propulsion. For safety, the rider can articulate a single footrest to a higher position prior to a steep turn so it does not scrape the ground too. A footrest problem that could be more significant than the footrest problem with the Zike LLC vehicle then happens though. When the rider articulates one footrest to a higher position to perform a steep turn, it tilts upward and backward and the opposing footrest tilts forward and downward so both of the rider's feet are rather vulnerable to slipping off the vehicle. Furthermore, the upward and backward tilted footrest over engages the rider's calf muscle of their leg using that footrest. It is best if the footrest stays relatively flat while in a turn, like a bicycle pedal does on a bicycle. Over engaging a calf muscle places an excess amount of stress on the rider's lower leg and means the amount of downward force that they can generate through their bodies muscles decreases thus the movement facilitators of the vehicle get less traction and the rider becomes less stable. A benefit of riding this vehicle though is that the articulating footrests allow a person to adjust their mid and lower body weight and centrifugal forces to positions that help them stabilize their body and vehicle, which makes their transportation or recreational riding much safer. Another benefits with this vehicle and worth mentioning is that when the rider is gliding in a straight line, not operating the articulating footrest pedals, they are standing with their feet a natural distance apart in a side-by-side position and relatively planar, flat to the level ground. The side-by-side foot stance is similar to how a person rides a Segway style electric scooter. It is much safer and more comfortable than riding with one foot in front of the other “goofy foot” on vehicles with footrests that are too thin to stand with your feet side-by-side. For “bicycles without a seat”, side-by-side is the safest and better footrest riding position because a rider can use their hips, legs and feet to balance their body more accurately and efficiently than riding goofy foot.
In U.S. Pat. Nos. U.S. Pat. No. 6,220,612B1 by Trikke Tech Inc, also classified as a “bicycle without a seat”, articulated footrests provide propulsion to a 3-wheel vehicle, but in a different manner than the previous 2-wheel articulating footrest vehicles. To propel a Trikke Tech vehicle forward, a rider tilts the vehicle sharply left or right and applies downward force with their leg to a single footrest in an outwardly motion. Once the vehicle begins moving forward, the rider tilts the vehicle in the opposite direction and shifts their outwardly leg muscle motion to the opposing leg and footrest so the vehicle continues moving forward in a sinusoidal wave-like path. This human-powered scooter with articulating footrests is a common recreational product for young children as well as an unusual means of transportation for both children and some adults too. Several inherent problems have always existed in this design though. One problem is that the vehicle does not propel forward in a straight line so the rider needs a lot of space to weave it left and right to go forward. Another issue with this vehicle is that the footrests are small and they are located too close to the elongated tubes that support them so the rider must angle the front of their foot outward and off the footrest to avoid it hitting the elongated tube, which is seen in
With the exception of the articulating footrest vehicle examples just referred to, common-everyday bicycles and some vehicles not mentioned in the previous paragraphs, the majority of other footrest systems for vehicles are static and do not move up and down, forward and backward or left and right. Vehicles with static footrests can be motorized, non-motorized, gravity, human or animal powered, and typically have two wheels or skis mounted one in front of the other in an “inline” fashion to a frame and fork. Static footrests generally include a left and right foot peg, pedal or platform. Some vehicles such as kid's scooters, both electric and human-powered, have a single static footrest platform or “floorboard”. Many of these footrest platforms make a rider stand goofy foot because they are very thin in width, as mentioned above. Some footrest platforms are wide enough that a rider can stand with their feet side-by-side, but not wide enough that the rider can stand comfortably and naturally with some open space in between their feet. One major problem with having conventional static footrests on a vehicle is psychological in nature in that they are not suited for turning a vehicle sharply because many times the rider is afraid that a footrest will drag on the ground or in the snow and cause them to overturn the vehicle. Another major problem with static footrests is that they do not allow a rider of a vehicle with them to adjust their mid or lower body weight to positions that aid with balance and safety when turning sharply, such that articulating footrests do.
In many practices, the components of such conventional static footrests are fastened securely to the vehicles frame, as can be referenced in Pat. Nos. US20120074667A1 by Honda Motor Co Ltd. Although the footrests on this common motocross style motorcycle do pivot slightly upwards and backwards for safety related issues, neither footrest articulates up or down to a higher or lower position. Without articulating footrests, the rider of this seated motorcycle vehicle does not have the added benefit of being able to adjust their lower body weight to higher and lower positions to assist them in turning the vehicle.
Pat. Nos. US2018/0086360A1 by Tngnt Ski Bikes Inc, a seated skibike vehicle for sliding down snowy mountainsides in the wintertime, demonstrates static footrests that do not spring backwards like the static footrests just mentioned in paragraph 0007. The problem with this design is identical to that of the off-road motorcycle by Honda Motor Co Ltd in that the rider of the skibike also cannot shift their lower body weight and centrifugal forces up and down to higher and lower positions, like how they can on a common everyday bicycle with cranks and pedals. As a result, the rider is rather vulnerable to overturn the vehicle when cruising at high speed and negotiating a sharp turn. Such an overturn of the vehicle is caused by an imbalance brought about by the combined effect of offset centrifugal force of the rider and a lack of tire or ski traction that shifting your lower-body weight up and down to the desired position with articulating footrests can correct. Furthermore, such conventional static footrests also are not very comfortable or fun to use when traversing a vehicle on uneven snow because a riders lower body is not staying flexible, getting exercise or helping them steer the vehicle.
U.S. Pat. Nos. D460,720S1 by Slopecycle LLC, also shows a snow-sliding vehicle, but it is without a seat to sit on and has a single static foot-platform or “floorboard” for both feet to rest on instead of two individual footrests. With this vehicle design, a rider straddles the frame with one foot on each side of the vehicle while standing on the floorboard. The footrests do not articulate during the entire time the rider is using their vehicle, so there are no benefits of being able to shift mid and lower body weight up and down to help steer the vehicle. This makes the vehicle less safe to ride and also more vulnerable to overturn.
This paragraph explains more detail about having articulating or static footrests on your vehicle. Many overturns and accidents on a vehicle with static footrests or a single footrest platform happen because the rider cannot move their footrests to upper and lower positions similar to how pedals and cranks on a bicycle work. Typically, when tilting into a turn a bicycle rider manually rotates the cranks with their legs and feet to raise their left pedal in the upward position for a left turn or right pedal in the upward position for a right turn. Raising the pedal higher off the ground makes turning a bicycle much safer because a rider is less likely to drag it in the dirt or on the pavement thus catching a stationary object and causing an overturn of the vehicle. Shifting the bicycle pedals to higher and lower positions during a steep turn also allows the bicycle rider to shift their centrifugal force to a more comfortable position where they can better use it to balance their bicycle. Furthermore, when a rider aligns their mid and lower body weight with the bicycle correctly during a sharp turn it helps convert centrifugal forces into gravitational “G” force that goes through the frame and makes the tires of the bicycle grab the ground or pavement better, thus adding safety and excitement to the ride. Learning how to do this correctly and efficiently is a skill that millions of bicycle riders strive to attain.
To explain with more specificity about vehicles with static footrests and the riders that use them, we can refer back to paragraph 0009 and the modern-day skibike in Pat. Nos. US2018/0086360A1 by Tngnt Skibikes Inc. Snowsport enthusiasts have enjoyed riding modern-day skibikes for recreational and sport purposes since the 1970's. Modern-day skibikes, also called “Type-2” skibikes, are very similar to a common mountain bicycle, but with two snow skis instead of two wheels and static foot-pegs or bicycle pedals as footrests. Typically, two snow skis are mounted to a frame and steering system in an inline fashion to facilitate movement of the skibike vehicle. To ride a skibike, a person goes to a ski resort during winter months, sits on a chairlift with their skibike in hand and rides to the top of the snow-covered mountain. After disembarking the chairlift, the rider points their skibike downhill, sits on the seat, steps onto a footrest with one foot and pushes the vehicle forward with the other foot to begin gliding downhill. To best simulate a snow skiing experience, sometimes the rider remains standing with both feet supported by the footrests. Skibike footrests comprise of either bicycle pedals, motorcycle style foot pegs or ATV style platforms secured directly into the front frame of the vehicle. It is important to mention that skibike footrests are static and do not move up or down, forward or backward and they do not help a skibike rider steer their vehicle with their mid or lower body weight such that pedals mounted on rotational cranks do for bicycle riders. As a result, the skibike rider is rather vulnerable to overturn their vehicle when negotiating a sharp curve. An overturn of the vehicle also happens when a footrest drags in the hard snow and catches a solid object under the snow that the rider did not see.
To help solve the problem of static footrests on a skibike, occasionally serious riders have customized their skibikes by replacing the fixed static footrests with rotational bicycle cranks, roller bearings and pedals. Functionally, this makes a skibike perform better than a traditional skibike because the rider can now raise and lower their footrests and adjust their lower body weight up and down in a steep turn. Skibikes with bicycle pedals and cranks are more fun to ride too because they perform more like a bicycle so the rider can experience higher G forces. Skibike riders that use bicycle pedals and cranks also get more exercise and look more stylish than traditional skibike riders that have their feet and legs resting on static footrests not getting exercise.
Bicycle cranks and pedals are not a solution to the problem of fixed footrests on a skibike though. Skibikes do not need rotational cranks because they do not have a drive train. The roller bearings allow the cranks to spin too freely, which makes them dangerous to use when riding a skibike. Furthermore, when riding the skibike elevated and in a straight line and both crank arms are in a planar and flat to the level ground position, one foot is in front of the other and that is not as safe as having your feet side-by-side. All these points make bicycle cranks and pedals the improper technology to fix the problem of static footrests on a skibike.
As is well known, most common motorcycle assemblies include a frame having foot pegs that a rider stands or rests their feet on while riding the vehicle. In most cases, foot pegs attach at the lower part of the vehicles frame at opposite sides thereof. Frequently, controls for operating certain components of the motorcycle, such as a rear wheel brake or gear shifter, are located in close proximity to the foot pegs. Referencing back to paragraph 0008 and Pat. Nos. US20120074667A1 by Honda Motor Co Ltd, FIG. 12 in the patent application drawings depict this scenario very accurately. Generally, foot levers allow the operator of the motorcycle to foot activate the engines transmission gears and rear brake when desirable. A hand lever on the handlebar operates the transmissions clutch. The conventional gasoline-powered motorcycle design has inherent disadvantages in that the foot-operated gear lever and the rear brake lever are in the pathway of a rider's foot when contemplating an articulating footrest design. With recent advancement in motorcycle designs that now use an electric motor to power the vehicles movement, transmissions with gears are no longer necessary. This eliminates the need for a foot-operated gear lever near the foot peg and a hand-operated clutch lever on the handlebar. Furthermore, relocating the rear brake foot-lever to the handlebar as a hand lever now frees up space at the foot-peg area for this articulating footrests invention to be applied thereof. Adding articulating footrests to all types of motorcycle riding will free many riders, especially riders with low-profile road racing motorcycles, from the fear that they might have of dragging a footrest along the ground, thus catching a crack in the road and causing an overturn of the vehicle. The biggest benefit of adding the present invention to motorcycle riding is that it will give riders the new ability to adjust their lower-body weight up and down and left and right to help them steer a motorcycle.
Accordingly, there is a continuing need for an articulating footrest invention that attaches to many different types of vehicles that are designed to be operated and ridden on smooth or rough roads or trails, and particularly designed for operation on hillsides and ski slopes, or in the water. The present invention fulfills this need and provides other related advantages.
The present invention resides in articulating footrests for vehicles similar to that of a bicycle, motorcycle, kids scooter or skibike. There are various purposes for this invention. One of which is to allow a person to have footrests on their vehicle that they can raise to a higher position, either manually or with an electric assist motor, so while turning sharply one of the footrests does not potentially drag on the riding surface. This helps to eliminate some of the initial fear people have when riding vehicles with footrests. Another purpose of the present invention is to provide a vehicle rider adjustable footrests that help him or her balance and stabilize their mid and/or lower body when turning sharply. This adds tremendous safety and fun to vehicle riding. Furthermore, this invention allows a vehicle rider to stand in a natural side-by-side position with open space in between their feet thus adding comfort, stability and more safety to vehicle riding. Furthermore, the present invention also adds exercise and stability to vehicle riding so a rider can enjoy their recreation and transportation better when compared to riding on a vehicle with static footrests, or other vehicles with articulating footrests that do not work that well.
This articulating footrest invention generally comprises an upper and lower horizontal arm having additional vertical footrest arms pivotally attached at the ends thereto. The upper and lower horizontal arms are adapted to freely rotate at center or midpoint by use of fulcrums. Footrests attach to the vertical footrest arms in different ways, which will be described in detail hereafter.
The articulating footrests for vehicles invention in this non-provisional application comprises of rigid arms, equal and non-equal distances and frictionless collinear pivots. In one particularly preferred embodiment, two similar horizontal arms are attached, one directly above the other, to a vertical column of a vehicle frame that is accompanied by various componentry and vehicle movement facilitators. We can call this articulating footrest configuration a “2-arm” version. A vertical footrest arm on each side of the vehicle attaches to the ends of the horizontal arms by means of frictionless pivots. The six attachment points of the 2-arm articulating footrest invention are pivots. Fixed to each vertical footrest arm is a footrest suitable for placing substantial weight thereon. Later described in this application is a “4-arm” articulating footrest version with twelve attachment points that are also pivots. It is important to mention that the 2-arm articulating footrest version is better for foot pegs, bicycle type pedals or small platforms and the 4-arm version is best for longer and wider foot platforms or “floorboards”. Furthermore, the articulating footrest mechanism is not limited to the 2 or 4-arm versions. Any number of arms of any shape or size constructed from tubes, solid bars, plates, or a combination of these materials with or without spacers will suffice.
For maximum accuracy, the articulating footrest configuration requires that the top and bottom horizontal arm center fulcrums must be midpoint between the left and right vertical footrest arm pivots so that the weight of the vehicle rider will not result in a net transfer to either footrest. A fulcrum placed off center of the ideal center-pivot point of the top and bottom horizontal arm will tend to cause a net shift of weight in the direction of a downward-moving vertical footrest arm resulting in an imbalance of the articulating mechanism. Likewise, a fulcrum placed above the center pivot at midpoint will tend to level out the horizontal arms of the articulating mechanism's balance rather than it respond accurately and efficiently to small downward-force changes from the vehicle rider to the footrest.
The invention's center-pivot points attach to vertical flat mounts welded onto the apex of a round “tube” column or columns that support the mechanism on the vehicles front frame. These flat frame-mounts could also be loose spacers, but welding, braising or molding them onto a vehicles front frame for strength and rigidity is better. Mounting the invention to the flat surface of a square or rectangle frame tube with washers and/or spacers also works very well. Although a tube of any shape or size can work too. Methods for attaching the articulating footrest mechanism to the vehicles frame through its center-pivot points include a bolt and nut with washers and/or spacers, or a central-pivot point shaft secured to the vehicles frame that the horizontal arms can slide over and rotate about thereof. A nut or special screw would secure the footrest mechanism to the shafts. Securing the invention to a vehicle is not limited to these two methods though. Such connections can be made by any means that are known in the art such that the footrests can articulate in a generally vertical radial path. This articulating footrest invention is also not limited to a “vertical” frame-tube column for support. Other supports such as horizontal tubes or metal plates of any shape or size will suffice too. If either of the latter two methods of support for the articulating footrest mechanism are used, the top and bottom horizontal arm center fulcrums will also be inline with the vertical apex of the steering-system head tube of the front frame.
Typically, the center fulcrums on the horizontal arms are equal distance from the outer fulcrums that support the vertical footrest arm or arms on each side of the vehicle and on each end of the mechanism, unless footrest “tilt” is required. To provide a small degree of footrest tilt that adds some comfort and safety to riding the vehicle, the top horizontal arm may be a bit shorter than the arm below it. This idea works on both the 2 and 4-arm articulating footrest versions. To provide a vehicle rider a fast option to have footrest tilt, adjusting devices can be located on the ends of the horizontal or vertical footrest arms or a combination thereof.
Off-center weight on the left or right footrest exerts a downward force and a torque on horizontal arm center fulcrums and the frame supports of the articulating mechanism, thus causing the horizontal arms to rotate at midpoint. The center-pivot bearings on the top and bottom horizontal arm supported at midpoint carry the downward force. To save cost, plastic or similar-material sleeves with slipperiness inside metal sleeves welded or braised into the horizontal arms can replace the frictionless bearings of the invention. The invention could just use metal sleeves with grease and eliminate the need for the plastic slippery sleeves though, as long as the articulating mechanism rotates freely with little or no friction present.
Bolts, washers and nuts can secure the articulating footrest mechanism to the vehicle or nuts and washers on a shaft welded or braised onto the vehicle itself can work. Securing the articulating footrest mechanism together and to the vehicles front frame correctly is important because the frictionless connections of the horizontal and vertical footrest arms must tightly assemble without much play. If too much play exists in the connections and the offset weight of the vehicle rider rests toward the outside of the footrest, further from the center of the vehicle, the top arm will be in tension and the bottom arm will be in compression. This tension and compression while in use, if not removed by tight fitting fulcrums creates an off-balance of the footrests and makes the rider feel unsecure.
In this articulating footrest invention, certain presumptions are made. In order for such a device to be functional and be able to support physical masses, the following must be true:
A unique aspect of the present invention is that an optional elastomeric rubber band or helical torsion spring can attach between the articulating footrest mechanism and the vehicle's frame for purposes of aiding the rider in returning the mechanism's footrests to a planar and flat to the level ground position. When the articulating footrests are in use, the rubber band or the torsion spring stores energy that the rider can also use to aid him or her in returning the vehicle from a steep tilted turn to an upright elevated position. For this reason, an elastomeric rubber band or helical torsion spring with substantial energy storage is preferred for rough vehicle riding conditions, as on a dirt trail or a racecourse. A lighter weight elastomeric rubber band or helical torsion spring is preferred for easy street riding at slow speeds.
It is also contemplated that the articulating footrest mechanism can be operated automatically by an electric motor that responds to the tilting of the vehicle and not by the downward forces imparted on it by the rider of the vehicle. One or more of the horizontal arms could have an electric drive motor drive shaft attached to it in some way or another so it does not rotate freely and mostly by the electric motor rotating it in either direction. An electrical device attached to the vehicle that responds to tilting angles would send clockwise or counter-clockwise rotational commands to the electric motor so it rotates the footrests either up or down. For the “electric assist” articulating footrests to work correctly, when the rider tilts the vehicle left, the left footrest would raise to a higher position than it was when resting flat. When the rider tilts the vehicle right, the right footrest would raise to a higher position than it was when resting flat. “Resting flat” is when the vehicle is elevated vertically and it is the same distance from the ground to the bottom of each footrest. When resting flat, the footrests are relatively level with the ground.
Paragraphs 0029-0034 below highlight some basic vehicle embodiments for this inventions application.
A steering assembly is operably connected to the front-frame section of a vehicle that comprises the invention. Typically, the steering system includes a handlebar rotatably connected to the front-frame section.
A front movement facilitator, such as a wheel, snow or water ski member is operably connected to the steering assembly. The front movement facilitator is interfaceable with the riding surface to support the front-frame section and provide movement to the vehicle. Similarly, the rear-frame section has a movement facilitator operably connected thereto typically in the form of a wheel, snow or water ski or a track drive for snow or mud conditions. The front and rear movement facilitators are mounted one in front of the other and inline like the wheels of a standard 2-wheel bicycle, 2-wheel motorcycle, 2-wheel scooter or an inline roller skate that has more than two wheels.
The vehicle includes rider supports, typically footrests such as bicycle pedals, motorcycle type pegs or ATV style platforms attached to an articulating mechanism that is adapted to support a rider's weight thereon.
The frame can include stops extending from a frame section that engage with the articulating mechanism to limit the upward or downward movement of the footrests. These stops prevent the articulating mechanism from damaging the vehicle frame or its paintjob when the footrests are in use. The stops can also make the footrests more comfortable to use when shifting them up and down to the highest and lowest points of the articulations radial rotational movement. The stops preferably have shock dampening characteristics and may comprise of a resilient flexible-elastomeric material, but they are not limited to this material and can be made from other materials used in the vehicle manufacturing industries.
The vehicle could include stops on or inside the articulating mechanisms horizontal arms instead of on the vehicles frame. They would perform the same function and engage with the vehicle frame or a part of the frame thus limiting the upward or downward movement of the footrests. Preferably, these stops may be comprised of resilient flexible-elastomeric material and have shock dampening characteristics too.
Other features and advantages of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.
The accompanying drawings illustrate the invention. In such drawings:
As shown in the accompanying drawings for purposes of illustration, the present invention resides in an articulating footrest invention, generally referred to by the reference number 40. The reference number 10 applies to a vehicle embodiment that could support the invention. As will be described more fully herein, the unique aspects of the present invention 40 is that the footrests articulate such that each moves in response to the application of the riders mid and lower body forces during operation of the vehicle 10 upon which the invention is attached.
In a particularly preferred embodiment, with reference to
The horizontal arms 42 and 45 are comprised of metal tubing, bars, plates or any other material of any shape or size having sufficient strength and durability to support a human being thereon. Typically, the horizontal arms 42 and 45 are comprised of tubes, such as those used in motorcycles, bicycles, kid's scooters and the like. They can be any length that allows the rider of a vehicle a comfortable, safe and fun riding experience.
With reference to
The footrest supports 43 and 44 as seen in
With reference to
With reference to
Whether a 2 or 4-arm articulating footrest version attached to a vehicle,
Although several preferred embodiments of the present invention 40 have been described in detail for purposes of illustration, various modifications may be made without departing from the scope and spirit of the invention 40. Similarly, for purpose of illustrating the novel applications of the present invention, more details of the vehicle embodiments are provided below to further describe how the invention works. The invention is not limited to these vehicle embodiments though and other types of vehicles may suffice too.
With reference to
With continuing reference to
Referring to
A movement facilitator 29 in the form of a ski is operably connected to the rear frame section 14 which is interface able with the riding surface 800, as seen in
As illustrated in
With reference to
Furthermore, adjusting the rigidity and rotational pivoting motion of the articulating footrest mechanism 40 can be done by incorporating helical torsion springs, elastomeric rubber bands, or similar return devices or materials between the articulating footrest mechanism 40 and its housing 100 or the vehicles frame 20. Being able to easily adjust these return devices or materials would accommodate for riding on different types of terrain, in which the footrests 43 and 44 or 90 and 91 would move very little when downward force is applied or a lot so a rider can more accurately retain control of the vehicle 10 on irregular surfaces. The ability to easily change these springs or elastomeric bands would enable the rider to quickly adjust the tension and other rotational qualities of the articulating footrest mechanism 40 so it returns faster or slower to a position that is planer and flat to the level ground or “resting position”. If the correct tension spring or elastomeric band is attached between the articulating mechanism 40 and the vehicles frame 20 or the optional support housing 100, less downward force would be required by the rider to return the footrests 43 and 44 or 90 and 91 back to a planar and flat to the level ground resting position. Identifying the preferred elastomeric rubber band or helical torsion spring to match the type of terrain a person chooses to ride on can be part of the fun in customizing the articulating footrest mechanism to a rider's special needs and wants.
Typically, the combination of stops 110 and 111 and elastomeric bands or metal springs that return the articulating footrest mechanism 40 to a flat and planar “resting position” also serves to reduce the shock, force and strain exerted on the vehicle rider when they are operating their footrests at any speed. The upper and lower stops 110 and 111 and potential elastomeric return bands or springs both prevent the articulating footrest horizontal arms 42 and 45 from moving excessively, thus serving to stabilize the rider so they can have fun and excitement and not overturn their vehicle. With reference to
The vehicle 10 preferably includes a brake system so the rider could adjust the overall speed of the vehicle 10.
With particular reference to
Although several embodiments have been described in detail for purposes of illustration, various modifications may be made without departing from the scope and spirit of the invention 40. Accordingly, the invention is not to be limited, except as by the appended claims.
Number | Date | Country | |
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63051895 | Jul 2020 | US |