SHORT HYDRODYNAMIC DESIGNED WATER SKI
1. A compact water ski, comprising a top surface, a bottom surface and a rocker, wherein the length is about 12 inches to about 36 inches and the width is about 5 inches to about 15 inches and the top surface has a means to secure a foot.
A compact water ski having a top surface, a bottom surface and a rocker with an overall length of less than 36 inches and a means to secure a foot to the top surface. The ski can be with or without a fin. The bottom surface of the water ski can be decorated with strakes and/or channels to allow for greater maneuverability and stability.
- 1. A compact water ski, comprising a top surface, a bottom surface and a rocker, wherein the length is about 12 inches to about 36 inches and the width is about 5 inches to about 15 inches and the top surface has a means to secure a foot.
This application claims the benefit of U.S. Provisional Application Ser. No. 62/350,791, filed Jun. 16, 2016, the disclosure of which is hereby incorporated by reference in its entirety, including all figures, tables and drawings.
Water skiing originated on Jun. 28, 1922 at Lake Pepin in Lake City, Minn. by Ralph Samuelson when Ralph discovered that leaning backwards with ski tips up leads to successful water skiing with barrel staves. Ralph fashioned the first dedicated water skis from lumber with leather strips for bindings. The first patented water skis, Waller, U.S. Pat. No. 1,559,390 Oct. 27, 1925, attached the tow rope to a bridle attached to the tips of the skis and from the tips to a handle for the skier. From that inception, the sophistication of water skis advanced for specialized or general use. The most common skis used are known as combination pairs that can be used as a pair or where one ski can be used for slalom skiing. Combination skis have relatively wide tips for control and are generally between 5 and 6 feet in length, 6 to 8 inches in width, and ½ to ¾ inches in thickness, although lengths of as little as 4 feet are commercially available for children. Slalom skiing is carried out with a single ski designed to make sharp turns and reach high speeds, tending to have wide tails and flat bottoms but more advanced slalom skiers use skis with more tapered tails, beveled edges, and have concave or tunnel concave bottoms. Trick skis are relatively short, generally 40 to 48 inches in length and are relatively wide, generally 10 to 12 inches in width where the skier uses a single ski that lacks a fin. Long and wide ski pairs are manufactured for jumping. The most extreme water skiing is barefoot, without any skis. Because of the extreme lack of surface area on the water, the typically barefoot skiers must ski at speeds of at least 35 miles per hour to achieve sufficient lift.
Water skis are designed to be flexible, having a concave shape with bevel edges that have a degree of rocker, which is its tip to tail curvature. Typically, the concave shape spans the entire bottom surface of the water ski. More concave surfaces stabilize the ski at the cost of speed. Bevels can be sharp and flat or soft and rounded for stability and speed or control in turns, respectively. A highly flexible, or soft-flex, ski turns easily and rides smoothly in rough water. A stiffer flex allows for speed on flat water but is more challenging to turn. The outside shape and width of a ski from tip to tail is important with wider skis being more stable and easier to engage in deep water, but more difficult to control in turns relative to a narrower ski. Skis with less rocker are fast but require longer turning radii.
The concave base of skis normally has a “V-Bottom” with a center rib from the tip of the ski to allow an easy maintenance of a straight trajectory and to provide a pivot point to transfer weight from edge to edge for beginners. A tunnel-concave design employs a center concave having flat spots on each side of the edge that act like pontoons. A full concave from edge to edge allows a quick transition from edge to edge and holds strongly in a turn, and is employed by competition and higher level skiers.
The sport of water skiing lacks a ski that is designed to handle choppy water at speeds below 25 mph. To this end a design suited for speeds of about 20 mph or less would be desired, yet at such speeds a maneuverable ski would need to be small.
Embodiments of the invention are directed to short hydrodynamic water skis that permit use at low speeds. These compact water skis are less than 36 inches in length with widths in excess of five inches, though less than 15 inches. These compact water skis can include one or more fins on the bottom surface or the skis can be finless. The water skis can be decorated with strakes and/or channels to enhance stability and maneuverability.
A water ski design, according to embodiments of the invention, is compact with lengths ranging from about 12 inches to 36 inches and widths from 5 inches to 15 inches. With such a design, extreme maneuvering is possible due to a small inertia and swing-weight. The compact water skis use traditional waterski bindings, foot-straps or wakeboard boots as a means to secure the skier'"'"'s feet. In one embodiment of the invention, the ski incorporates one or more fins. In an embodiment of the invention the ski is finless for starting from flat surfaces, jumping ramps, and grinding rails.
The ski'"'"'s outline shape can vary, where: the tip can be pointed, rounded, faceted or a combination shape; the rail, or sides can be parallel, concave, or convex; and the tail can be square, rounded, pointed, faceted or a combination, for example, as shown in
In embodiments of the invention, the fore-section can be narrower than the mid-section and the aft-section can be narrower than the mid-section. In an embodiment of the invention, the fore-section can be narrower than the mid-section and the aft-section can be broader than the mid-section. In an embodiment of the invention, the fore-section can be narrower than the mid-section and the aft-section can be about equal in width to the mid-section. In an embodiment of the invention, the fore-section can be broader than the mid-section and the aft-section can be about equal in width to the mid-section. In an embodiment of the invention, the fore-section can be broader than the mid-section and the aft-section can be narrower than the mid-section. The fore-, mid- and aft-sections can be about one quarter to about one half of the length of the water ski.
The bottom portion, according to embodiments of the invention, can have a myriad of shapes, as illustrated in
Top surfaces of the water skis, according to embodiments of the invention, can be flat or can be convex or concave. The surface can also include channels and/or strakes to direct water from the top surface. The rocker can extend over the entire length of the water ski, or can extend only to or through the mid-section.
A compact water ski with a fin was constructed, as photographically shown in
It should be understood that the examples and embodiments described herein are for illustrative purposes only and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.