Patent ID: 8562006

Claim:
A wheel for an inline skate, the wheel comprising: (a) a hub for receiving an axle; and (b) a wheel body defining a circumference of the wheel, the wheel body comprising: (i) a circumferential surface extending along the circumference of the wheel, the circumferential surface comprising a first contact surface and a second contact surface for being in rolling contact with a skating surface on which the inline skate moves, wherein each of the first and second contact surfaces is generally flat in a widthwise direction of the wheel; and (ii) a receding surface extending from the first contact surface to the second contact surface and forming a single groove between the first contact surface and the second contact surface, the single groove extending along at least part of the circumference of the wheel and having a width between 2 mm and 2.9 mm for reducing rolling friction, wherein the single groove is defined by first and second walls extending substantially perpendicularly from the first and second contact surfaces and by a bottom wall extending between the first and second walls and wherein the bottom wall and first and second walls of the single groove are generally flat.