The present invention relates to archery products, and more particularly to a vane on an archery arrow to stabilize the arrow in flight.
Archery arrows typically are outfitted with feathered or polymeric sheet type vanes to stabilize the arrows in flight. Vanes produce lift and lateral force on the arrow which in turn stabilizes the arrow's flight pattern by moving the center of pressure rearward. In turn, this usually provides consistent arrow flight and can improve shot accuracy.
Lift and lateral forces can be increased by increasing the surface area of a vane, however, there is a limit to the overall vane size for improving stabilization. For example, while theoretically stabilizing arrow flight, larger vanes can interfere with an arrow rest as the arrow is shot from a bow. This interference can negate any improved stabilization due to the increased surface area of the larger vane. This can be particularly problematic for slower moving arrows propelled by lower energy bows, such as recurves and long bows.
Accordingly, archers and manufacturers turn to other features of vanes to improve arrow flight and stablization. For example, some offset the arrow vanes fore to aft to induce spin on the arrow via the vanes. Others utilize vanes having an upright, generally planar blade with a slight fore to aft curvature. While these types of vanes do produce spin, sometimes they do not produce enough spin to provide notable stabilization, particularly, for slower moving arrows, such as those shot from bows like recurves and long bows.
Further, offset and pre-curled vanes many times are stressed, bent, deformed or kinked as they are manipulated and mounted on a cylindrical arrow shaft. As a result, such vanes can become slightly misshapen. This can produce aerodynamic defects or unwanted anomalies in the vanes, or can make the vanes prone to damage in flight or upon impact with a target. After time, this can also reduce the amount of arrow stabilization intended by the use of such vanes.
Accordingly, there remains room for improvement in the field of archery arrow vanes, and in particular, ones that can impart stabilization forces on the arrow and improve the flight of the arrow.
A vane, for a projectile, is provided where the vane includes a ribbon strip having a leading ribbon edge that is twisted to induce spin of the projectile during its flight.
In one embodiment, the vane can include a base that mounts to a projectile surface. The ribbon strip can extend upward from the base. The ribbon strip and the base can be constructed from a semi-rigid but flexible material. The flexible material can enable the vane to clear an archery component, such as an arrow rest, when a projectile, such as an arrow; to which the vane is attached is shot.
In another embodiment, the ribbon strip can include an intermediate ribbon portion spaced a distance from and free from attachment to the projectile surface and from the underlying base so as to form a gap under the intermediate ribbon portion. In some cases, the intermediate ribbon portion can be spaced a distance from the base and particular, an intermediate base portion, for optionally greater than one third the length of the base, further optionally greater than one half the length of the base, and further optionally greater than two thirds the length of the base or other lengths depending on the application.
In still another embodiment, the ribbon strip can include a second ribbon end that is attached to the base rearward of the first end. Thus, the first ribbon end and the second ribbon end can be attached to a corresponding first base end and a corresponding second base end, with an intermediate ribbon portion therebetween being disassociated and physically separated from the base between those base ends. That intermediate ribbon portion can be free-floating and distal from the base in that region.
In yet another embodiment, the ribbon strip can be a generally flat, planar strip of material that is twisted between its ends so that the ribbon takes on a twisted and/or partially helical configuration between the ends. In some cases, the side edges of the ribbon strip also twist and therefore are spaced different distances from the base along different segments of the ribbon strip.
In a further embodiment, the vane can include a fin that extends upward from the base within a gap between the ribbon strip and base. The fin can be planar and/or in some cases, furled or offset from a longitudinal axis of the base to further impart spin to the projectile. The fin can be generally perpendicular to some portions of the ribbon, and generally parallel to other portions of the ribbon, for example, the first and second ribbon ends.
In still a further embodiment, the ribbon strip can include a cantilevered second ribbon end that is free from attachment to the base and projectile. Thus, the first ribbon and can be joined with the base, while the intermediate ribbon portion and the second free end can be free or otherwise cantilevered above the base and/or rearward of the base, optionally over a projectile surface when the vane is mounted to the projectile.
The vane of the current embodiments is well-suited to induce spin to an associated projectile, such as an arrow, during flight. With the twisted ribbon strip and leading ribbon edge, spin to the projectile can be easily and consistently induced, particularly for slow-moving projectiles such as arrows shot from low speed archery bows. Where the vane material is semi-rigid but flexible, the vane can retain its shape during arrow acceleration and flight, but can also withstand impact with a portion of a an archery bow riser or arrow rest without permanently deforming the vane. Accordingly the vane can be used multiple times, for the life of the arrow in some cases. Where the vane includes a fin under the ribbon strip, the fin can aid in arrow flight correction and/or stability of the arrow during flight. The ribbon strip also can provide a leading ribbon edge that has a significant surface area useful for creating aerodynamic stability and a center of pressure similar to higher profile vanes, including standard pre-curled vanes.
These and other objects, advantages, and features of the invention will be more fully understood and appreciated by reference to the description of the current embodiment and the drawings.
Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited to the details of operation or to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The invention may be implemented in various other embodiments and of being practiced or being carried out in alternative ways not expressly disclosed herein. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. Further, enumeration may be used in the description of various embodiments. Unless otherwise expressly stated, the use of enumeration should not be construed as limiting the invention to any specific order or number of components. Nor should the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that might be combined with or into the enumerated steps or components.
A vane for use with a projectile in accordance with a current embodiment is illustrated in
As shown in
With reference to
The base 20 also can include an upper base surface 20U and a lower base surface 20L disposed on respective upper and lower portions of the base 20. These upper and lower surfaces can run the length L of the base, from the first and through the intermediate base portion into the second end. These upper and lower surfaces can be contoured, for example rounded and/or concave or convex as shown in figs four and five.
Optionally, although shown in the form of an elongated base, the base also can take on other forms. For example, in some cases it may be suitable to construct the base in the form of a sleeve or tube that can fit around the projectile 100 or a portion thereof. In such a construction, multiple vanes can be integrally formed with a sleeve or tube at regular intervals, extending radially outward from the base, sleeve or tube. The vanes can be secured to the projectile by shrinking, adhering or otherwise friction fitting the tube on the projectile.
Returning to
The ribbon strip 30 can include a leading ribbon surface 35 and a lower or trailing ribbon surface 34. Optionally, for up to half and/or a majority of the length L of the base and/or vane, the leading ribbon surface can face generally outward and away from the upper surface 20U of the base 23. Of course, as described below, this leading ribbon surface 35 can face other relative directions to the respective first 23L1 and second 23L2 lateral sides.
As shown, the intermediate portion 33 can extend rearward from the first ribbon end 31 toward the second ribbon end 32. The intermediate ribbon portion 33 can be spaced a distance D from parts of the base, such as the intermediate base portion 23 and its upper surface 20U or lower surface 20L. This distance D can be variable, changing from the first ribbon end 31 to the second ribbon end 32. At the first end 31, the ribbon strip 30 can be attached directly to the first base end 21. At the second end 32, the ribbon strip 30 can be attached directly to the second base end 22. In these locations of attachment, the ribbon strip 30 can be integrally formed, glued, adhered, welded, or otherwise fastened or attached to the base, and in particular the respective base ends.
In regions where there is a gap G or other space between the ribbon strip and base, for example, where the ribbon strip is spaced the distance D from and free from attachment to the base, as well as the surface of the projectile, the ribbon strip can include a twisted shape as mentioned above. With such a feature, the leading ribbon surface 35 can be twisted rearward of the first ribbon end 31 as it extends toward the second ribbon end 32. The lower ribbon surface or trailing ribbon surface 34 also can be spaced the distance D above the base 20 in the intermediate ribbon portion 33. Again this distance D can be variable depending on the location of the measurement of the distance D. As shown, for example in
The ribbon strip as mentioned above can include a lower ribbon surface 34. The lower ribbon surface 34 can face downward, generally toward the surface of the projectile 101 or generally downward toward the base and/or upper surface 22 of the base. The lower ribbon surface 34 and the upper or leading ribbon surface 35 can be contoured oppositely from one another or similar to one another. For example, as shown in
Optionally, the leading ribbon surface 35 and the lower ribbon surface 34 can extend on the first and second lateral sides 23L1, 23L2 of the longitudinal axis LA in different regions. For example, in the intermediate portion 33, the leading ribbon surface 35 and the lower ribbon surface 34 can extend from a first ribbon side edge 36E1 to a second ribbon side edge 36E2. These side edges can extend downward with the ribbon strip to the base. As shown in
Near to the ends, the respective first ribbon side edge 36E1 and second ribbon side edge 36E2 can extend the same height from the base. For example, at the first end 31, the first ribbon side edge 36E1 can be at the same elevation or height, as the second side edge 36E2. Thus, both edges can be at equal distances from the base. The opposite ribbon end 32 can be similarly configured. Optionally, the first side edge 36E1 can be rearward of the second side edge 36E2 at the first ribbon end 31. Likewise, at the second ribbon end 32, the first ribbon side edge 36E1 can be rearward of the second ribbon side edge 36E2. Of course, in some applications with extreme twists of the ribbon strip, at the second end 32, the first ribbon side edge 36E1 can be rearward of the second ribbon side edge 36E2.
As shown in
Further optionally, in some constructions, the width of the ribbon rearward of the apex A and generally closer to the second ribbon end 22 can be greater than the other widths of the ribbon. For example, the width W4 of the ribbon shown in
With reference to
As shown in
The first fin end 41 can be separated from the first ribbon end 31 and likewise the second fin end 42 can be separated from the second ribbon end 32. Respective small secondary gaps can be formed between these respective ends. The ribbon strip 30 at the first end 31 can be substantially parallel to the first end 41 of the fin. Likewise, the second ribbon end 32 can be substantially parallel to the second fin end 42. Between the respective ends, however, the intermediate portion of the fin and the ribbon strip are non-parallel and/or generally offset relative to one another. The upper edge 44 of the fin also can be separated from the lower ribbon surface 34 along a substantial portion of the length of the fin. Near the first fin end 41, the fin edge 44 can face toward the first ribbon side edge 36E1. Near the second fin end 42, that fin edge 44 can face toward the second ribbon side edge 36E2.
The components of the vane and the vane itself can be constructed from a rigid or semi rigid but flexible material. This material can be a polymeric material, natural or synthetic rubber, silicone, a composite material or other material. In some applications, circumstances material can be an alloy or metallic. Generally, the material can retain the general shape of the twisted ribbon strip as an associated arrow is accelerated and flies during flight. The material, however, can withstand the impact of the vane with a bow riser or an arrow rest without permanent deformation so that the vane can be used multiple times and provide similar aerodynamic effects on the arrow to which the vane is attached. Again these aerodynamic effects can include spinning, rotating or otherwise reorienting the projectile to which the vane is attached.
A first alternative embodiment of the vane is illustrated in
A second alternative embodiment of the vane is illustrated in
Optionally, in this embodiment, the vane 210 can include the ribbon strip 230 with an apex A′ that is at or near the middle M′ of the length L′ of the vane. Thus, the apex A′ is generally centered between the first and second ends 231, 232 of the base and the ribbon strip. The distance D3 between the lower ribbon surface 234 and the upper or lower base surfaces to 220U and 220L can be its greatest at or near that middle M′ of the length L′.
A third alternative embodiment of the vane is illustrated in
A fourth alternative embodiment of the vane is illustrated in
These fins can span between the base and the ribbon, and can connect these elements to one another between the ends of the ribbon. As shown, the first fin can be forward of the second fin, and optionally can be of a shorter or lesser height than the second fin. The first fin can be joined to the upper surface 420U of the base at its bottom and the lower ribbon surface 434 of the ribbon strip at its top. The first fin 441 can be joined with the intermediate portion 433 of the ribbon, closer to the first end 431 of the ribbon than the second fin 442. The second fin can be rearward of the first fin, and of a greater height than the first fin, optionally extending to the apex A of the ribbon. The first fin can be joined to the upper surface 420U of the base at its bottom and the trailing or undersurface 434 of the ribbon strip at its top. The second fin 442 can be joined with the intermediate portion 433 farther rearward than the first fin, and closer to the second end 432 of the ribbon than the first fin 441. Optionally, each of the fins can be integrally formed as a single piece with the ribbon and the base.
As shown in
Optionally, each of the fins can include front and rear edges. For example, the first or forward fin can include a front 441 E1 and rear 441 E2 edge. The second or rear fin can include a front 442E1 and rear 442E2 edge. These edges can be curvilinear as shown, and can extend from the base to the ribbon. The rear edge 441 E2 can be separated from the front edge 442E1 by the gap G2. These edges in other applications can be generally linear or angled.
Optionally, the first and second fins, as shown in
As shown in
Optionally, the fins' front and rear edges might not be offset by any distance at all. In such cases, the remainder of the fins can be offset relative to the longitudinal axis at some angle A6, A7. Further optionally, the remainder of the fins can be offset at angles A6 and A7, but those angles might be zero, in which cases, the fins can be parallel to one another and/or the longitudinal axis. Yet further optionally, the fins can be offset a distance from one another but each still parallel to the other and/or the longitudinal axis. Still further optionally, the first fin can be furled or twisted as it extends upward, so the front edge 441 E1 is twisted or curvilinear as it extends away from the base when viewed from the front view. In some cases, the second fin can have a similar front edge 442E1 configuration. These configurations also can induce spin to the associated arrow.
In operation, the ribbon strip 430 and the fins 441 and 442 can be configured to induce spin to the projectile 100 during flight. Where the fins are offset from one another or at the angles A6 and A7, the fins can further supplement or augment the spin induced by the configuration of the ribbon strip. These fins also can operate as supports or pillars, structurally supporting the leading surface 435 of the ribbon as it undergoes pressure and forces due to air moving over it, to prevent the ribbon from collapsing toward or to the base.
The various components and features of the embodiments herein, for example, the archery vane and its components, can take on a variety of aesthetic forms, shapes and sizes. Although a particular component or feature can have a function, that feature can be expressed in different aesthetic manners to form an artistic design and/or purely ornamental design.
Directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations. The use of directional terms should not be interpreted to limit the invention to any specific orientation(s).
The above description is that of current embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. This disclosure is presented for illustrative purposes and should not be interpreted as an exhaustive description of all embodiments of the invention or to limit the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element(s) of the described invention may be replaced by alternative elements that provide substantially similar functionality or otherwise provide adequate operation. This includes, for example, presently known alternative elements, such as those that might be currently known to one skilled in the art, and alternative elements that may be developed in the future, such as those that one skilled in the art might, upon development, recognize as an alternative. Further, the disclosed embodiments include a plurality of features that are described in concert and that might cooperatively provide a collection of benefits. The present invention is not limited to only those embodiments that include all of these features or that provide all of the stated benefits, except to the extent otherwise expressly set forth in the issued claims. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular. Any reference to claim elements as “at least one of X, Y and Z” is meant to include any one of X, Y or Z individually, and any combination of X, Y and Z, for example, X, Y, Z; X, Y; X, Z; and Y, Z.
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Number | Date | Country | |
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Parent | 16201109 | Nov 2018 | US |
Child | 16441442 | US |