Abstract: A liquid spraying device with a return-preventing structure comprises a receiving chamber having an inner tube; a front end of the receiving chamber being formed with a spraying mouth; a tapered section being formed between the spraying mouth and a front end of the liquid chamber; an elastic body being annularly installed on an inner wall of the inner tube; a gap being formed between the elastic body and the inner tube; a front end of the elastic body being filled with liquid; a valve being installed between the liquid chamber and the expansion chamber; a base having an actuation portion; and a pad at an edge of the liquid chamber near the connection of the tapered section and the liquid chamber; the pad being installed between the elastic body and the wall of the inner tube.

Abstract: A liquid filled bullet is a hollow body. The bullet comprises a gunpowder chamber at an inner rear end; a propulsive valve at a front end of the gunpowder chamber; a free section formed between the gunpowder chamber and the propulsive valve; a receiving chamber at a front end of the bullet before the propulsive valve; liquid being filled within the receiving chamber; and a protection casing having an open end corresponding to a front end of the bullet. Moreover, a position of the protection casing is selected from one of a first position enclosing an outer periphery of the bullet and a second position at an inner periphery of the bullet. A front end of the bullet is formed as a tapered body. A periphery of the tapered body has a plurality of indentations and a shape of the propulsive valve is corresponding to that of the tapered body.

Abstract: A positioning structure of a dynamic scooter comprises a handle supporter, a linkage seat, and a bicycle body. A lower end of the handle supporter is engaged with a linkage. A bottom end of the bicycle body has a front wheel and a rear end of the bicycle body has a rear wheel. The treadle is installed at an upper side of the bicycle body; and a front end of the treadle has an ear. The ear is connected to the stud of the linkage. The treadle is positioned to the bicycle body. When the treadle is pivotally lifted, the bicycle body pivotally rotates and is positioned. A bottom of the treadle is installed with a first buckle and an upper side of the bicycle body is installed with a second buckle so that the treadle is tightly adhered to the bicycle body by the buckles.

Abstract: A power scooter has a base frame which defines a battery chamber. The battery chamber holds a storage battery, and the power scoter has a footplate on which a power scooter rider stands thereon is pivoted to the base frame and the footplate can be turned relative to the base frame to close/open the battery chamber.

Abstract: A brake lever-controlled power scooter control system includes a control unit electrically connected between the battery and motor of the power scooter and adapted to control the operation of the motor subject to the moving speed of the power scooter, and switch means electrically connected between the control unit and the motor of the power scooter coupled to the brake lever of the power scooter to close the circuit between the control unit and the motor of the power scooter when the brake lever is released, or to open the circuit between the control unit and the motor of the power scooter when the brake lever is depressed.

Abstract: A power scooter, in which the base frame defines a battery chamber, which holds a storage battery, and the footplate on which the power scoter rider stands is pivoted to the base frame and can be turned relative to the base frame to close/open the battery chamber.

Abstract: The present invention herein relates to a driving control apparatus of motorized scooter comprised of battery, driving unit, and motor, characterized in which the driving unit consists of at least a relay, a start-up and protective circuit, an under-voltage protective circuit, a power switch and speed control circuit, and a braking unit, that when the power switch and speed control circuit are on, and the relay is open, user may push the wheels of the scooter manually to drive the motor; when a set speed is reached and the relay is closed, the motor is driven directly, controlling the speed of the scooter, in addition, when the speed of the scooter is below a certain rate, the relay will be opened to stop the motor; at this time, the user may restart the motor by pushing the wheels of the scooter manually to move the scooter forward.

Abstract: A brake lever-controlled power scooter control system includes a control unit electrically connected between the battery and motor of the power scooter and adapted to control the operation of the motor subject to the moving speed of the power scooter, and switch means electrically connected between the control unit and the motor of the power scooter coupled to the brake lever of the power scooter to close the circuit between the control unit and the motor of the power scooter when the brake lever is released, or to open the circuit between the control unit and the motor of the power scooter when the brake lever is depressed.

Abstract: The present invention herein relates to a driving control apparatus of motorized scooter comprised of battery, driving unit, and motor, characterized in which the driving unit consists of at least a relay, a start-up and protective circuit, an under-voltage protective circuit, a power switch and speed control circuit, and a braking unit that when the power switch and speed control circuit are on, and the relay is open, user may push the wheels of the scooter manually to drive the motor; when a set speed is reached and the relay is closed, the motor is driven directly, controlling the speed of the scooter; in addition, when the speed of the scooter is below a certain rate, the relay will be opened to stop the motor; at this time, the user may restart the motor by pushing the wheels of the scooter manually to move the scooter forward.

Abstract: A rear wheel and rear fender mounting arrangement for kick scooter includes two horizontal wheel holder frames fastened to a rear side of a footplate, a rear wheel pivoted to the wheel holder frames, two vertical suspension arms respectively fastened to the wheel holder frames by screw bolts to support a pivot bolt in horizontal, a rear fender pivoted to the pivot bolt and adapted for pressing on the rear wheel to stop the rear wheel from rotation, and a spring mounted on the pivot bolt to support the rear fender above the rear wheel.

Abstract: A handlebar unit and footplate mounting arrangement includes a handlebar unit having a head tube, a sector-like mounting frame fixedly provided at the front side of a footplate, a connecting bar having a front end fixedly secured to the head tube and a rear end pivoted to the mounting frame, a quick-release lock adapted to lock the handlebar unit between the extended position and the collapsed position, the sector-like mounting frame having front peripheral locating notches for enabling the quick-release lock to lock the handlebar unit in the extended position and rear peripheral locating notches for enabling the quick-release lock to block the handlebar unit in the collapsed position.

Abstract: A kick scooter combination frame structure is constructed to include a handlebar and front fork assembly holding a front wheel, a head frame, the head frame having a vertical tube coupled to the handlebar and front fork assembly and two parallel lugs extended from the periphery of the vertical tube, and a footplate pivoted to the head frame and supported on a rear wheel, the footplate having a front opening, which receives the lugs of the head frame, and two longitudinal mounting rails perpendicularly raised from a bottom side wall thereof and reinforced with reinforcing ribs, the mounting rails each having a plurality of mounting holes respectively fastened to respective mounting holes on the lugs of the head frame by screw bolts.