The following includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art nor material to the presently described or claimed inventions, nor that any publication or document that is specifically or implicitly referenced is prior art.
The present invention relates generally to the field of cycling and more specifically relates to cycling aerodynamic manipulation.
Spinning spoked wheels create aerodynamic resistance, or drag, which result in loss of forward momentum. Drag is created by the spoked wheel spinning against the ground as well as the air around the spoked wheel. Drag can be increased by wind movement and speed of travel. The drag created when cycling can increase by a variety of factors and can increase the time it takes to move from one point to another.
Professional cyclists often try to achieve the fastest time possible when competing. They rely heavily on their equipment, such as a bicycle, to be as efficient as possible. Aerodynamics plays a big part in cutting minutes off the final time in a race. The aerodynamic drag increases during a race which also leads to increased fatigue on the cyclist engaged in the race. A suitable solution is desired.
U.S. Pat. No. 8,757,733 to Simon Smart relates to an optimum aerodynamic bicycle wheel. The described optimum aerodynamic bicycle wheel includes embodiments which improve airflow around the bicycle wheels by providing for one or more of: (1) an optimum leading edge width of a rim for preventing early stall in cross winds, while still allowing for sufficient stability without undue drag, while not unnecessarily increasing the rotating wheel and drag on the frame; (2) a sidewall shape with a subtle camber angle at the leading, which defines a rate of radius change at the max width of the rim—which further defines the max width and placement along the chord length for optimizing the aerodynamic properties of the rim; (3) a continuous rate of change of curvature at a spoke face, which fundamentally improves the performance and stability by generating a side force at higher yaw angles; and (4) wheel sets with a wider front rim relative to a narrower rear wheel to assist in flow attachment in high crosswind areas.
In view of the foregoing disadvantages inherent in the known cycling art, the present disclosure provides a novel coefficient cycling aero foil system. The general purpose of the present disclosure, which will be described subsequently in greater detail, is to provide a foil system designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel.
A coefficient cycling aero foil system is disclosed herein. The coefficient cycling aero foil system includes a bicycle wheel rim having a tire engaging portion and an inner periphery. A plurality of spokes are positioned around the inner periphery of the wheel rim. The wheel rim is configured to receive a tire at the tire engaging portion. A plurality of air foils are configured in a series around the inner periphery of the wheel rim. The plurality of air foils comprise carbon fiber. The plurality of air foils further comprise a convex bulbous profile with a rounded leading edge and a sharp trailing edge. The plurality of air foils is/are strategically placed for optimum aerodynamic wind flow and are precisely angled to force wind past the air foils creating increased forward momentum while the bicycle is in forward motion. The air foils reduce drag and increase forward momentum by cutting turbulence created when the tire spins.
Those with ordinary skill in the art will now appreciate that upon reading this specification and by their understanding the art of cycling and aerodynamics as described herein, methods of reducing drag will be understood by those knowledgeable in such art.
For purposes of summarizing the invention, certain aspects, advantages, and novel features of the invention have been described herein. It is to be understood that not necessarily all such advantages may be achieved in accordance with any one particular embodiment of the invention. Thus, the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein. The features of the invention which are believed to be novel are particularly pointed out and distinctly claimed in the concluding portion of the specification. These and other features, aspects, and advantages of the present invention will become better understood with reference to the following drawings and detailed description.
The figures which accompany the written portion of this specification illustrate embodiments and methods of use for the present disclosure, a coefficient cycling aero foil system, constructed and operative according to the teachings of the present disclosure.
The various embodiments of the present invention will hereinafter be described in conjunction with the appended drawings, wherein like designations denote like elements.
As discussed above, embodiments of the present disclosure relate to cycling and more particularly to a coefficient cycling aero foil system as used to improve the cycling aerodynamic manipulation.
Generally, the coefficient cycling aero foil may be designed to reduce drag and turbulence from a tire and spokes used to support a bicycle wheel. Turbulence is caused by the bicycle wheel spinning which creates drag that may impede forward momentum. The coefficient cycling aero foil is designed to be structurally connected to a rim which creates an aerodynamic concave cup on the receding side of a spoke. The coefficient cycling aero foil may be designed to increase speed while reducing drag. This may be done by the lift principle of a wing using a convex aerodynamic shape while in the ascending phase of rotation. The rotational forward speed may be twice the hub speed, thereby allowing the lifting body to create a Reynolds Number sufficient for lift into the forward rotation.
The shape of the coefficient cycling aero foil may give a boost to lift while maintaining a steady pressure, through constrained laminar flows which act upon the lifting side of the design. On the reverse rotation, a convex shape captures the airflow of the receding spin of the wheel past the spoke while the wheel is receding in rotation. This action may cause increased speed, reduce drag and therefore may increase forward momentum. The wheel may be constructed from carbon fiber or any other suitable material. An additional benefit may be that the braking surface will increase in depth and cooling of this surface will more easily radiate away from brake surface.
The coefficient cycling aero foil may be strategically placed around the inner periphery of the wheel rim. The convex shape design uses aerodynamic forces to reduce drag and increase forward momentum by cutting the turbulence created when a wheel spins. The foils are placed around the spokes and are eighty millimeters in length if there are twenty spokes within the rim, and alternately, sixty millimeters in length if there are twenty-four spokes within the rim. Other versions are envisioned. The foil may have a convex bulbous shape which is placed on the leading edge of the foil. The relative angles of the convex bulbous shape start at the tip of the foil where there is a two-degree edge, at fifteen millimeters, the edge is then seven degrees, in preferred embodiments, at thirty millimeters, the edge angle is thirty-four degrees, and lastly at forty millimeters, the angle is reduced to twenty-five degrees. This creates a trailing edge design that is concave, increasing lift.
Referring now more specifically to the drawings by numerals of reference, there is shown in
The embodiments of the invention described herein are exemplary and numerous modifications, variations and rearrangements can be readily envisioned to achieve substantially equivalent results, all of which are intended to be embraced within the spirit and scope of the invention. Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application.
The present application is a divisional of and claims priority to U.S. patent application Ser. No. 16/191,991 filed Nov. 15, 2018, and further is a conversion of and claims priority to U.S. Provisional Patent Application No. 62/586,710 filed Nov. 15, 2017, both of which are incorporated by reference herein in their entirety.