Abstract: A pedaling vehicle includes a crank shaft extending along and rotatable relative to a frame body about a crank axis and operated by pedals. A tubular coupler is mounted on and is rotatable relative to a mounting segment of the crank shaft about the crank axis. A chainwheel is secured on a first coupling end of the tubular coupler to be rotated with the tubular coupler about the crank axis so as to drive a wheel body to rotate. A gear train includes initial and final gears which are of such a gear ratio as to enable the final gear to deliver an increased angular speed, and which are coupled with the driving segment of the crank shaft and a second coupling end of the tubular coupler, respectively, so as to transmit the increased angular speed of the final gear to the tubular coupler, thereby driving the chainwheel to rotate.

Abstract: A compact and portable memory-card type USB mass storage device includes at least a circuit board and an electric connector. A plurality of elastic leaf-like terminals corresponding to contacts on a specific matching memory card, such as SD, MS, MMC or SMC, that is to be engaged with the circuit board, and other necessary electronic elements are directly mounted on a surface of the circuit board. The electric connector is provided at an end of the circuit board for freely plugging onto a computer or other electronic apparatus. A case protectively encloses the circuit board and the electric connector, and is provided at an end with a memory card slot, via which the memory card is inserted into the case, and at an opposite end with an opening for the electric connector to expose therefrom for connecting to the computer and so on.