Abstract: An in-line skate has a boot, a chassis supporting the boot, and a plurality of wheels rotatably mounted on axles supported by the chassis. An improvement of the in-line skate is a system for adjusting the height of at least one of the axles in relation to the chassis. The system includes a pair of opposed, coaxially rotatable bushings supported by the chassis. Each of the bushings defines a through-hole for passing a wheel axle. The axle-receiving through-holes are located eccentrically to the rotational axis of the bushings. The system also includes a pair of hubs where each of the hubs is interfitted with a different one of the rotatable bushings so that rotation of the hubs is transferred to equivalent rotation of the bushings. Like the bushings, each of the hubs defines a through-hole for passing the wheel axle. The hub through-holes are located eccentrically to the rotational axis of the hubs and the interfitted bushings.

Abstract: A lever arrangement is provided to adjust the height of one or more rollers of an in line skate. The lever arrangement is rotatably mounted between an axle for a roller and a bracket for supporting the roller axle and is mounted on both ends of the axle. The axle extends through a rotatable bushing at one end of the lever arrangement having an off-center hole for the axle. A lock is provided at a second end of the lever arrangement.

Abstract: A brake structure for an in line skate is mounted on the forward end of the skate. The brake structure comprises two brackets secured to the skate and a rotatable cylinder which rotates in contact with the brackets to produce a frictional braking force when the cylinder is contacted with the ground.