Abstract: A roller assembly includes a roller body having a rounded outer surface, an end opening, and an internal cavity extending inwardly along an axial direction from the end opening and configured to receive a weight assembly including one or more weights, a weight holder received within the cavity and configured for holding the weight assembly within the cavity, and a retaining structure engaged with the roller body to retain the weight holder and the weight assembly within the cavity. The weight holder includes first and second engaging members to engage first and second ends of the weight assembly that are spaced in the axial direction, to limit movement of the weight assembly along the axial direction. At least one of the first and second engaging members is positionable in different axial positions relative to the other, such that the engaging members can accommodate changes in size of the weight assembly.

Abstract: A mobility tool includes a body having first and second opposed ends and an outer surface, and a connection structure at the first end of the body, where the connection structure is configured for connection to a mounting structure. The outer surface of the body includes a top surface, a bottom surface, and side surfaces extending between the first and second ends, where the top and bottom surfaces have greater surface area than the side surfaces. The bottom surface has a contour that includes a convex portion proximate the first end and a concave portion proximate the second end. The height of the body is greater at the convex portion than the concave portion and smallest at the second end. The body further includes an inner body formed of a rigid material, and an outer body at least partially covering the inner body and formed of a flexible material having greater flexibility than the rigid material.

Abstract: A bone plate having at least one variable angle locking hole is described. The variable angle locking hole allows a bone anchor having a threaded head to be driven into underlying bone while oriented at an angle with respect to a central hole axis of the hole that is within a range of angles at which the head is configured to threadedly mate with the at least one thread of the bone plate. Accordingly, the bone anchor can be driven into the underlying bone until the threaded head threadedly purchases with the bone plate inside the variable angle locking hole.

Abstract: A weightlifting apparatus includes a weight plate having a first side and an opposed second side. A central aperture extends through the weight plate. A pair of first slots extend through the weight plate. A first inner flange extends radially outwardly from an inner wall of each first slot on the first side of the weight plate. A first outer flange extends radially inwardly from an outer wall of each first slot on the second side of the weight plate. A pair of second slots extend through the weight plate. A second inner flange extends radially outwardly from an inner wall of each second slot on the second side of the weight plate. A second outer flange extends radially inwardly from an outer wall of each second slot on the first side of the weight plate.

Abstract: A clamping device, such as a barbell collar, includes a primary member having a cylindrical body with a central passage configured to receive a mounting member therethrough, an actuator mechanism connected to the primary member and moveable between a locked position, where the primary member securely engages the mounting member, and an unlocked position, where the primary member is removable from the mounting member. The clamping device also includes a retaining mechanism configured to releasably retain the actuator in the unlocked position.

Abstract: A exercise roller device including a center roller portion provided with shaped end roller portions, and the center roller portion provided with a centered circumferential groove. A method of making the exercise roller device.

Abstract: An exercise bike includes a frame, a rotor assembly and a drive assembly mounted on the frame, where the drive assembly is configured to drive rotation of the rotor assembly, and a cover configured to at least partially cover the rotor assembly. The components of the drive assembly and the rotor assembly include structures that improve the performance of the exercise bike, including but not limited to a strong and rigid construction and improvements in belt tracking, user feel, effort consistency, synchronization, and rotor performance.

Abstract: A exercise roller device including a center roller portion provided with shaped end roller portions, and the center roller portion provided with a centered circumferential groove. A method of making the exercise roller device.

Abstract: A exercise roller device including a center roller portion provided with shaped end roller portions, and the center roller portion provided with a centered circumferential groove. A method of making the exercise roller device.