Abstract: An in-line wheeled skate has a frame with opposed, parallel side rails and wheel arranged in tandem between the side rails, each wheel mounted on an axle. Each axle end is surrounded and supported by a resilient element in a cushioning aperture of the side rail. Each axle end also extends into a guiding aperture of the side rail overlapping the cushioning aperture. The guiding aperture has a first dimension selected relative to a corresponding first dimension of the axle end to limit movement of the axle end relative to the side rail in the direction of a first plane, and a second dimension selected relative to a corresponding second dimension of the axle end to permit resilient movement of the axle end relative to the side rail in the direction of a second plane transverse to the first plane.

Abstract: An exercise device for has a rigid body defining a chamber, at least one first fluid mass disposed to move within the chamber in response to movement of the rigid body during exercise, thereby increasing the effective mass of the device by dynamic movement of the fluid mass during rhythmic exercise, one or more handles for gripping of the device during exercise, and a set of one or more weight adjusting elements that can be removably attached in order to adjust the static base weight of the exercise device. Exercise devices may be constructed for use of one hand or two hands.

Abstract: A method of molding an integrated bearing and resilient wheel structure, for a roller skate or the like, and a resulting product having a single bearing. The bearing of the wheel has a centering surface aligned with the bearing axis and exposed for engagement by a mold. The mold defines the shape of the wheel, including its cylindrical running surface, and includes a centering surface that is centered on the running surface of the wheel and is exposed to engage the bearing. The relative position of the centering surfaces of the mold and bearing are so related that, when the surfaces are interengaged, mold spaces extend from oppositely axially directed surfaces of the rotary bearing part. The mold and bearing centering surfaces are engaged to produce centering, and, while shielding the space between the rotary and stationary parts of the bearing from entry of fluid, the mold is filled with a charge of fluid resin.

Abstract: Rolling skating shoe with injection molded sole in which receptacles are provided that support the wheel hangers and wheels. The sole shown has a structural beam "T" profile, the flange of which supports the foot and the lower rib of which has an irregular lower edge forming a series of apertured angled bosses to receive the wheel hanger structure. Receptacles in the form of embedded threaded connectors enable bolting of the wheel hangers directly to the injected sole. The method for forming this shoe includes placing the threaded connectors into the mold and then injection molding the sole of semi-rigid plastic directly against a string lasted upper held in place by a last.

Abstract: A shoe and its method of manufacture in which an upper and preformed rubber outsole are joined by a foamed polyurethane, injection-molded midsole. The rubber outsole and polyurethane foam midsole combine to provide a lightweight and flexible shoe compressively conformable to the flexing foot and having strong traction and long wear.