Abstract: A light-generating wheel for an in-line skate includes two side shells and an electric board sandwiched between the two side shells. The electric board has a plurality of light emitters protruding out of one of said two side shells to light on and off, i.e. to flash while the wheel is rotated in skating on the ground.

Abstract: A roller skating shoe with a light emitting device includes an elongate inverted U-shaped plate fixed under a skating shoe, a plurality of rollers combined rotatably with the elongate inverted U-shaped plate by means of two locating plates and bearings and rod shafts passing through the inverted U-shaped plate, the locating plates, and the rollers to be tightly screwed with anti-loose nuts. Coils are electrically connected with light emitters fixed on both sides of each roller. Magnets are fixed on the two locating plates producing magnetism to cross each coil to allow the coil to produce electricity to light up each emitter when the rollers are rotated by a skater.

Abstract: A running machine is provided. The machine includes a base consisting of a flat upper plate and flat lower plate, a plurality of roller shafts provided laterally and spaced above the upper plate. An endless belt moves around the roller shafts by means of a motor. Four lifts are provided between the upper plate and the lower plate at the respective four corners thereof, to incline the upper plate. A computer for controlling the motor and the lifts is also provided. The computer controls the motor and lifts according to a program provided on a disk recorded with a program of various conditions of a rod. A visual-acoustic mask is connected to the computer, and includes a screen and a speaker to present images and sounds according to the program to a user wearing the mask while running on the belt for exercise.

Abstract: An automatic sun screen for vehicles having a sun screen cylinder, a set of transmission devices, a sun screen, a stationary part, operating buttons and a power source plug characterized in that the transmission device in the left side of the sun screen cylinder can be transmitted by a motor, and the sun screen with steel spring plates in the right side of the sun screen cylinder being connected with the transmission device can be rolled up or released by the obverse and reverse movement of the motor when drivers push the operating buttons upwardly or downwardly.