SPLITBOARD WITH TRUNCATED EDGING
A splitboard is disclosed comprising two longitudinal halves, each longitudinal halve comprising inner sidewalls partially wrapped in metal edging to reduce performance inefficiencies associated with metal edging spanning the length of the inner sidewalls.
This application is a continuation-in-part of, and claims priority to, U.S. Provisional Patent Application No. 61/347,174 entitled “A Splitboard with Truncated Edging,” filed on May 21, 2010 for Alister Horn, which is incorporated herein by reference.
BACKGROUND OF THE INVENTION1. Field of the Invention
This invention relates to snow skis, and more particularly relates to splitboards with enhanced performance characteristics.
2. Description of the Related Art
Snowboards and skis are well-known to those of skill in the art, and have been widely used by winter sport enthusiasts for decades. Splitboards comprise snowboards that can be separated into two longitudinal halves. These halves can be used as skis to step up slopes in the same manner that alpine touring skis and telemark skis are used. The two longitudinal halves of splitboards can also be coupled together to form a snowboard.
When the two longitudinal halves are coupled together, the splitboard is said to be in snowboard mode. When the two longitudinal halves are apart, the splitboard is said to be in touring mode, and the two longitudinal halves are used as backcountry touring skis.
The sides of snowboards and skis can be wrapped in metal edging, which protects the sides from water and collision, and which provides grip when a skier skies or traverses across snow and ice. Splitboards typically have additional metal edging so that both halves are fully wrapped, similar to a ski. The drawbacks of metal edging is that it adds additional overall weight to the ski, snowboard or splitboard. As splitboards have an additional inside metal edge, relative to snowboards, there is additional weight. Furthermore, additional metal edging compromises the flex pattern of the splitboard, creating an unintended feel; and the metal edging creates additional “swing” weight when moving from side-to-side, affecting maneuverability of the board (i.e. a greater moment of force which a splitboarder must overcome).
SUMMARY OF THE INVENTIONFrom the foregoing discussion, it should be apparent that a need exists for a splitboard which benefits from the grip performance imparted by metal edging, but does not suffer from the decreased weight and maneuverability performance characteristics that accompany the metal edging. Beneficially, such an apparatus would overcome the many of the difficulties with prior art by providing a splitboard with truncated inside edging installed in key areas where the edging is most beneficial.
The present invention has been developed in response to the present state of the art, and in particular, in response to the problems and needs in the art that have not yet been fully solved by currently available mattresses. Accordingly, the present invention teaches a splitboard with truncated inside edging. The present invention has been developed to provide a splitboard with truncated inner edges. The splitboard comprises a left longitudinal ski with an upwardly rising tip and an upwardly rising tail. The left longitudinal ski comprises a planar upper surface, a planar lower surface, and an inner edge, partially wrapped in metal edging spanning less than eighty percent of the total longitudinal length of the left longitudinal ski.
The splitboard also comprises a right longitudinal ski with an upwardly rising tip and an upwardly rising tail. The right longitudinal ski is detachably connected along its inner sidewall to the inner sidewall of the left longitudinal ski. The right longitudinal ski comprises a planar upper surface, a planar lower surface, an inner edge, partially wrapped in metal edging spanning less than eighty percent of the total longitudinal length of the right longitudinal ski.
In further embodiments, the left longitudinal ski and the right longitudinal ski further comprise outside lateral sidewalls wrapped with metal edging. In still further embodiments, the inner edges are partially layered with non-metallic material to provide grip as well as protection.
These features and advantages of the present invention will become more fully apparent from the following description and appended claims, or may be learned by the practice of the invention as set forth hereinafter.
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:
Many of the functional units described in this specification have been labeled as modules, in order to more particularly emphasize their implementation independence. Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
The longitudinal halves 102a-b each comprise a plank-shaped ski, with a planar upper surface and planar lower surface, or base. In the shown embodiment, the left longitudinal half 102a and the right longitudinal half 102b comprise upwardly rising tips and tails at opposing ends of the longitudinal halves 102a-b.
The longitudinal halves 102a-b may be formed of and comprise any material commonly known to those of skill in the art, including aluminum, glass fiber, Kevlar, wood, UHMW, titanium, carbon fiber, and other polymers and composite materials.
The longitudinal halves 102a-b comprise outside lateral sidewalls 108a-b, or outside lateral edges. The lateral sidewalls 108a-b may comprise a layering of ultra high molecular weight polyurethane (UHMW) to improve strength, flex pattern, and grip characteristics.
When the two longitudinal halves 102a-b are coupled together, the splitboard 100 is said to be in snowboard mode. When the two longitudinal halves 102a-b are apart, the splitboard is said to be in touring mode, and the two longitudinal halves 102a-b are used as backcountry touring skis.
In the shown embodiment, the outside lateral sidewalls 108a-b are wrapped with outside metal edging 106a-b.
The left longitudinal half 102a is detachably connected to the right longitudinal half 102b along their inner edges using means well-known to those of skill in the art. The longitudinal halves 102a-b are connectable such that the connected splitboard 100 is rigid across its x, y and z axes, and capable of withstanding the forces of skier snowboarding down a mountain surface on the splitboard 100.
The inside metal edging 104a-b also spans a portion of the length of the splitboard 100 along the inside edges of the longitudinal boards 102a-b, and is more particularly described below in relation to
Because the metal edging 104a-b does not span the entire length of the splitboard 100, the metal edging 104a-b is truncated.
The inside sidewalls 202a-b may be partially layered with a non-metallic material to provide grip as well as protection, including ceramic based materials, wood, stone, crystal, glass and/or organic materials. The metal edging 104a-b may also comprise other materials having similar properties to metals, including similar densities, flexibility, melting points, freezing points and/or durability.
In some embodiments, the inside metal edging 104a-b spans a plurality of section of the inner sideway (i.e. inner wall). In these embodiments, the inner edge may comprise metal edging 104a-b across the mid-section of the inner edge, as well as across the some of the forward and rear portions of the inner walls.
In some embodiments of the present invention, only one longitudinal half of the spitboard 100 comprises inside edging 104a-b. In these embodiments, the inside edging may be wrapped around only the side of the splitboard predominately used by a particular skier.
In other embodiments, the metal edging 104a-b is recessed into the inner walls and into the top surface, but not recessed into the lower surface. In these embodiments, the inner edging 104a-b may serve as fin, guide, wing or rudder directing the splitboard and longitudinal halves through the snow.
The longitudinal halves 102a-b, the outside edging 106a-b, and lateral sidewalls 108a-b are substantially described above in relation to
The left inside edging 104a and the right inside edging 104b comprise any rigid metal plating layering over or upon the inner sidewalls 202a-b. In various embodiments, the inside edging 104a-b may span a distance of one centimeter to more than one hundred centimeters in length across the inner sidewalls 202a-b. The inside edging 104a-b, in some embodiments, is centered along the inside sidewalls 202a-b relative to ski bindings on the upper surface of the splitboard 200.
In some embodiments of the present invention, the inside edging 104a-b overlays a portion of the upper planar surface and/or the lower planar surface to provide grip, or “bite”, to ensure that a skier who is putting the inside sidewalls 202a-b into contract with snowy and/or icy surfaces has as much contract from the inside edging 104a-b as possible.
The portions of the inside sidewalls 202a-b not wrapped with inside edging 104a-b may be layered with UHMW plastics, or other materials well-known to those of skill in the art.
By wrapping only a portion of the inside sidewalls 202a-b with inside edging 104a-b, the splitboard 200 demonstrates improved performance characteristics.
The existing inside edging 104a-b protects the core of the splitboard 200 from moisture infiltration and collision. The relatively small length of the inside metal edging 104a-b provides almost all of the grip that a full length ski surrounded with metal edging would have, because the inside edging 104a-b is centered, in some embodiments, beneath the bindings that skiers are using to push down on the splitboard 200.
The downward force exerted by a skier on the splitboard 200 is greatest directly beneath the binding where the truncated inside edging is located, and diminishes rapidly longitudinally across the board. This provides an adequate amount of grip.
Additionally, the greatly shortened pieces of metal edging allow for reduced total weight of the splitboard, reduced “swing” weight (moment of force of the splitboard), and a more natural and lively flex pattern of the splitboard that more closely resembles that found on snowboards. All three factors are of great importance to experienced practitioners of the sport, or skiers.
In various embodiments of the present invention, the length of the left inside edging 104a may not be congruent with the length of the right inside edging 104b. The lengths of both the left and right inside edging 104a-b may be predetermined or preselected to be optimal based on measurement data indicative of the foot used most or hardest by one or more skiers, the ratio that the left leg is used to the right leg of a skier in downhill skiing, and the like. Likewise, the left inside edging 104a may comprise a harder, denser, or more flexible version of metal edging than the right inside edging 104b to accommodate different riding styles and/or preferences.
The metal edging 104a-b may be wrapped around the inner edges 202a-b using screws, adhesives, clamps, or nails. In other embodiments, the inner edging 104a-b is slid into a recessed slot within the inner edges 202a-b or the lower surfaces of the longitudinal halves 102a-b.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims
1. A splitboard with truncated inside edging, the splitboard comprising:
- a left longitudinal ski with an upwardly rising tip and an upwardly rising tail, the left longitudinal ski comprising: a planar upper surface, a planar lower surface, an inner edge, partially wrapped in metal edging spanning less than eighty percent of the total longitudinal length of the left longitudinal ski; and
- a right longitudinal ski with an upwardly rising tip and an upwardly rising tail, the right longitudinal ski detachably connected along its inner sidewall to the inner sidewall of the left longitudinal ski, the right longitudinal ski comprising: a planar upper surface, a planar lower surface, an inner edge, partially wrapped in metal edging spanning less than eighty percent of the total longitudinal length of the right longitudinal ski.
2. The splitboard of claim 1, wherein the metal edging comprises metal plating recessed into the inner edge.
3. The splitboard of claim 1, wherein the inner edges are partially layered with non-metallic material to provide grip as well as protection.
4. The splitboard of claim 1, wherein the metal edging is recessed into the top surface, the lower surface, and the inner edge.
5. The splitboard of claim 1, wherein the recesses are formed by routing one or more grooves into the inner edge.
6. The splitboard of claim 1, wherein the inner edges are wrapped in a plurality of metal edging spanning non-continuous portions of the inner edge.
7. The splitboard of claim 1, wherein the metal edging is affixed to the inner edges using one of screws, adhesive, and clamps.
8. The splitboard of claim 1, wherein the metal edging is more resistive to compressive longitudinal forces than the either longitudinal ski.
Type: Application
Filed: May 18, 2011
Publication Date: Nov 24, 2011
Inventor: Allister Horn (Brighton, VT)
Application Number: 13/110,908
International Classification: A63C 5/02 (20060101);
