Abstract: A carrier for a bicycle including a body having two pairs of dovetails formed on a lower and front portion, and two extensions each having a pair of dovetail slots formed in an upper portion for engagement with the dovetails of the body so that the extensions can be coupled to the body, and the extensions can be disengaged from the body so that volume of the carrier can be decreased.

Abstract: An exerciser including a pair of treadles pivotally coupled to the frame body of the exerciser, a column fixed to the front end of each of the treadles and extended downwards, a pair of hydraulic cylinders having one end pivotally coupled to the frame body and having a piston rod coupled to the lower ends of the columns, and a valve coupled between the hydraulic cylinders so as to control the flowing of the hydraulic oil between the hydraulic cylinders so that the resistance of the hydraulic cylinders applied to the treadles can be adjusted.

Abstract: A scooter comprises a flexible attachment means which includes a longitudinal rod secured to a foot board of the scooter, a joint member having a front portion pivotally connected to the longitudinal rod for turning about a vertical axis, a U-shaped wheel carrying member connected to a rear portion of the joint member, a restraining bar transversely attached to the front portion of the joint member and two helical springs each of which has one end connected to the front end of the longitudinal rod and the other end connected to one of the ends of the restraining bar. The restraining bar and the springs provides a degree of controlling effect for limiting the turning movement of the rear wheel.