Abstract: A vending machine is disclosed. The vending machine may include a main body, a pathway, a shaft having a circular surface and a receiving space, a selection button, a sliding path, an opening, a plurality of merchandises and a payment managing system, wherein one or more merchandises are disposed in each pathway and the merchandises are supported by the circular surface of the shaft, wherein when the merchandise is selected and payment has been processed by the payment managing system, the shaft starts to rotate and the selected merchandise is received in the receiving space during the rotation of the shaft and dispensed to the sliding path and opening.

Abstract: A battery may include a battery body; a three-dimensional cap coupled with the battery body, and having a protruding portion to separate positive and negative electrodes of the battery; and a switch, wherein the battery is allowed to directly coupled and used with other electronic devices such as flashlights and electronic cigarettes without using a battery container or holder. In one embodiment, the three-dimensional cap can be coupled with a semi-finished battery product containing electrolyte.

Abstract: An atomizer of an electronic cigarette may have a double-layered shell body, a nozzle cap, an electronic wick, and a contact piece, wherein the double-layered shell body includes an outer tube, an inner tube, and an inner layer. The outer tube also has outer threads and the inner tube has inner threads, a recessed slot, an upper protruding portion and a lower protruding portion. The nozzle cap has an air hole, a nozzle and a threaded structure corresponding to the outer threads of the outer tube of the double-layered shell body. The electronic wick has a wick, a heating wire, leads and a filtering rod with a center through hole; while a contact piece has a wing-shaped elastic piece, an insulating spacer and a rivet, wherein the insulating spacer is used to separate the wing-shaped elastic piece and the rivet.

Abstract: A spring saddle cycle for fitness as well as for amusement is provided. The spring saddle cycle consists of a spring saddle and a pedal drive. The spring saddle includes a spring, a cycle saddle and handle bar or a simulative form of animal, such as horse. The pedal drive includes a pedal crankshaft connected at the both ends of the spring with a connecting rod and two brackets. The positions of the seat and the pedal drive and the length of the connecting rod are adjustable for the variable needs of the riders with the different body weight and the different pressure on the pedals. Several embodiments of the spring saddle cycle are provided.

Abstract: A human-powered boat propelling drive is provided for translating occupant's body weight and variable movements into the power for propelling boat. By coupling the propelling drives, a human-powered boat propelling device is provided which can be propelled and steered by occupant's body weight and movements. By grouping the propelling drives and devices on series or on parallel or mixed parallel series, variable human-powered boat propelling systems can then be provided for a wide range of boat applications.