Skis

A ski having a longitudinal axis and a side disposed on either side of the longitudinal axis, and having a front upwardly curved end and a rear end with a boot position intermediate said ends, said ski comprising:

• a ski face comprising the running surface, said face terminating at the ski sides and said face, substantially along the entire length thereof, being predominantly convex in cross-section at right angles to the longitudinal axis of the ski, so that said running surface projects below the sides of the ski;
• the predominantly convex cross-section of the running surface having a curvature from the ski mid-width outwards towards each side of the ski which, with reference to a straight line tangential to the curvature at the mid-width, commences gently convex and steepens increasingly until, passing through a point of inflexion at from about one-half to two-thirds of the distance in a straight line parallel to the reference line outwards from the mid-with, it becomes concave and continues concave until the tangent to its slope becomes substantially parallel with the reference line, and then continues to the ski side substantially along the said tangent;
• a pair of elongated blades, each blade having a length substantially less than the length of the ski and one blade mounted on each side of the ski at the boot position only, parallel to the axis of the ski and at least substantially symmetrical in relation to the boot position along the ski;
• each blade projecting downwards from the sides of the ski a distance generally the same as the maximum projection of the running surface below the sides of the ski;
• and
• each blade having a top inner face provided with a smoothly rounded surface where the top inner face meets the running surface, said smoothly rounded surface curved so that at its extremities it is tangential respectively to the running surface and the blade face, whereby a smooth groove is defined affording a snow throughway from the front to the rear of the ski.

A ski having a longitudinal axis and a side disposed on either side of the longitudinal axis, and having a front upwardly curved end and a rear end with a boot position intermediate said ends, said ski comprising:

• a ski face comprising the running surface, said face terminating at the ski sides and said face, substantially along the entire length thereof, being convex in cross-section at right angles to the longitudinal axis of the ski, so that said running surface projects below the sides of the ski;
• a pair of elongated blades, each blade having a length substantially less than the length of the ski and one blade mounted on each side of the ski at the boot position only, parallel to the axis of the ski and at least substantially symmetrical in relation to the boot position along the ski;
• each blade projecting downwards from the sides of the ski a distance generally the same as the maximum projection of the running surface below the sides of the ski;
• and each blade having a front end and a rear end, each blade front end disposed toward said ski front end, and each blade rear end disposed toward said ski rear end;
• and
• means for facilitating climbing with the ski, said means comprising a right-angle termination of the rear end of each of said blades.

A ski having a longitudinal axis and a side disposed on either side of the longitudinal axis, and having a front upwardly curved end and a rear end with a boot position intermediate said ends, said ski comprising:

• a ski face comprising the running surface, said face terminating at the ski sides and said face, substantially along the entire length thereof, being predominantly convex in cross-section at right angles to the longitudinal axis of the ski, so that said running surface projects below the sides of the ski, greatly reducing the resistance of the ski to turning;
• a pair of elongated blades, each blade having a length substantially less than that of the running surface of the ski and one blade affixed on each side of the ski at the boot position, parallel to the axis of the ski and at least substantially symmetrical in relation to the boot position along the ski;
• each blade having, facing the longitudinal axis, an inner face exposed by the convexity of the running surface so as to provide grip to prevent or very substantially limit side slip and skidding of the ski, and, facing away from the longitudinal axis, an outer face which is rounded in order to reduce its resistance to movement across snow in the outward direction and thus to reduce further the resistance of the ski to turning, the said inner and outer blade faces meeting at a bottom cutting edge which runs parallel to the longitudinal axis;
• and
• each blade projecting downwards from the sides of the ski a distance generally the same as the maximum projection of the running surface below the sides of the ski.