Abstract: A step assembly for a vehicle includes a base, a driving gear firmly connected to the shaft of the reduction device so as to be driven by the reduction device, two driven gears respectively and rotatably connected to the inner side of the base, an arm assembly pivotally provided to each of the two driven gears and a step securely and firmly connected to the arm assembly to be moved linearly.

Abstract: An LED illumination module has a case, multiple nuts attached to inside of the case, at least one connection assembly, a bottom cover and multiple LED elements. Each connection assembly has multiple electrically conductive elements, each of which is positioned on an inside and outside of the case and in contact with the nuts, and two wire connection elements. Each LED element has an anode terminal and a cathode terminal. The two terminals of each LED element are respectively connected to two adjacent electrically conductive elements and the two wire connection elements. Therefore, the LED elements can be fixed on the case and connected to each other in series by the connection assembly and the nuts.

Abstract: A warning light having a replaceable lamp includes a base, a circuit board, two conductive clamping supports and a removable housing. The circuit board is mounted on the base. The conductive lamp supports are mounted on the circuit board, connect electrically to the circuit board and each of the lamp supports has a top end, a bottom end and a clamp device integrally formed at the top end. The clamp device includes multiple resilient clamping fingers complementarily arranged at the top end of the lamp support. The lamp with two prongs is removably mounted on the lamp supports with the prongs being respectively clamped by the clamping fingers of the clamp devices. The removable housing is mounted on the base. Consequently, the lamp is easy to be assembled and replaced because of the resilient clamping fingers.

Abstract: A lamp that can concentrate light has two brackets, two shade holders, a shade, two sockets and two illuminating elements. The shade holders are attached respectively to the brackets. The shade is mounted between the shade holders and has a tubular body, a slit and an extension. The tubular body is made of an opaque material and is attached to the shade holders. The slit is longitudinally defined through the tubular body. The extension extends from the tubular body along the slit. The sockets are respectively mounted on the shade holders. The illuminating elements are attached to the sockets and are mounted in the open ends of the tubular body of the shade. Accordingly, the light emitting from the illuminating elements is concentrated and emits only from the slit in the shade to increase the brightness of the light emitted from the lamp.

Abstract: A string for a sports racket includes a base core formed from at least a first filament, an intermediate layer formed from a plurality of second filaments and enclosing the base core, and a first sheath layer enclosing the intermediate layer. At least one of the first filament and the second filaments has a molded structure which includes a toothed core that is made of a first plastic material and that has a toothed outer surface, and a second sheath layer that is made of a second plastic material and that is molded over the toothed core. The first plastic material has a hardness and a wear-resistance less than those of the second plastic material.

Abstract: A string for a sports racket includes a toothed core made of a first plastic material and having a toothed outer surface, and a sheath layer made of a second plastic material and molded over the core so as to be bonded to the toothed outer surface. The first plastic material has a hardness and a wear-resistance less than those of the second plastic material.

Abstract: A string for a sports racket includes a base core formed from at least a first filament, an intermediate layer formed from a plurality of second filaments and enclosing the base core, and a first sheath layer enclosing the intermediate layer. At least one of the first filament and the second filaments has a molded structure which includes a toothed core that is made of a first plastic material and that has a toothed outer surface, and a second sheath layer that is made of a second plastic material and that is molded over the toothed core. The first plastic material has a hardness and a wear-resistance less than those of the second plastic material.

Abstract: An amusement twister has a base disk provided at the center thereof with a hollow axle, a locking disk provided at the center thereof with a round hole dimensioned to fit over the hollow axle of the base disk, and a rotation disk provided at the center of the underside thereof with an engaging rod dimensioned to fit into the hollow portion of the hollow axle in such a manner that the underside of the rotation disk presses the steel balls received partially in the slots located in the upper surface of the locking disk, so as to permit the rotation disk to be turned leftwards and rightwards for a short span in a reciprocating pattern by the user's feet standing on the rotation disk, which is further provided with a protruded portion serving as a baffle and containing therein a receiving space for housing a speaker, a sound-reproducing circuit board, a plurality of batteries, and a switch.

Abstract: An exercise hand grip having sound-reproducing means and application of such hand grip comprises mainly two handles and one connection rod. One of the handles comprises a first housing and a second housing, both of which are of hollow constructions made of plastic material by means of injection molding. The first housing is provided therein with a speaker mount with a circular speaker disposed thereon, a sound-reproducing apparatus provided therein with conductive pieces disposed in the battery mount, and a circuit plate in contact with batteries lodged in the battery mount. The circuit plate comprises thereon an integrated circuit storing programmably musical melodies or commands. The second housing is symmetrical in shape with the first housing. Another handle is provided with a third housing and a fourth housing, both of which are of hollow constructions made of plastic material by means of injection molding. The third housing is provided therein with an exercise count display apparatus.

Abstract: Sports rod equipped with sound reproducer is composed mainly of a first rod case and a second rod case, both being of hollow construction and made of plastic material by injection molding. The first and the second rod cases join to form a rod-shaped body with the central portion thereof being hand grip and with both ends thereof being circularly headed. The sports rod has therein a sound reproducer, which in turn is provided with a speaker mounted on the speaker mount, and a circuit board containing thereon an integrated circuit with music or exercise commands stored programmably therein. When the switch of the sports rod is turned on, the sound reproducing device of the sports rod begins producing the sound of music or exercise commands stored in the integrated circuit thereof.

Abstract: A dumb bell comprises mainly a hand grip unit, a sound reproducing unit, and a weights unit. The hand grip unit consists of a lower case body and an upper case body, which are of hollow construction and are made of plastic material by injection molding. The lower case body is provided therein with battery mounts, circuit mounts located in one connection portion thereof and a circular tubular column located in the other connection portion thereof. The connection portions are respectively provided with thread. The sound reproducing device comprises batteries, conductive pieces mounted in the battery mounts, a sound reproducing circuit board mounted in the circuit mounts, and a speaker mounted on the circular tubular column. The sound reproducing device is capable of producing the sound of music or exercise commands.