Abstract: A wheel assembly for mounting to an axle of a wheeled product includes a wheel having an opening and a locking element which is insertable in the opening to secure the wheel to the axle. The locking element has a portion engaging the wheel and a second flexible portion for releasably engaging the axle. The locking element is so constructed as to allow a tool to be inserted therethrough for releasing engagement between the wheel assembly from the axle.

Abstract: A wheel assembly for mounting to an axle of a wheeled product includes a wheel having an opening and a locking element which is insertable in the opening to secure the wheel to the axle. The locking element has a portion engaging the wheel and a second flexible portion for releasably engaging the axle. The locking element is so constructed as to allow a tool to be inserted therethrough for releasing engagement between the wheel assembly from the axle.

Abstract: An apparatus and a method to deform a plastic rivet is described herein. The apparatus comprises a generally tubular outer wall configured and sized to enclose the rivet to be deformed and a piston slidably mounted in the generally tubular outer wall for longitudinal movements between a rest position and a pressure applying position. The deformation of the plastic rivet occurs when said piston moves towards the pressure applying position.

Abstract: A cover and container combination for enclosing products in an air and/or liquid seal tight engagement comprises a cover with a rim portion defining an inverted U-shaped cross-section consisting of an inner horizontal wall and a pair of opposite inner vertical side walls, the inner horizontal wall displaying a downwardly extending continuous rib. The container has a side wall with an upper edge consisting of a top wall and a pair of opposite side walls, the top wall of the container displaying a continuous recess. The width of the rib is slightly greater than the width of the recess so as to provide a tight sealing fit when the rib is received in the recess when the cover is engaged to the container.