Abstract: An electricity generating device including a base having a track, an electricity generating mechanism and a kinetic mechanism. The electricity generating mechanism includes a contact pressure assembly disposed on the track, and an electricity generating module connected to the contact pressure assembly. The electricity generating module is configured to convert mechanical energy generated by the contact pressure assembly into electrical energy. The kinetic mechanism includes at least one slider disposed on the track, and a drive assembly connected to the slider for driving the slider to continuously move along the track. The slider repeatedly rolls over the contact pressure assembly when driven by the drive assembly to continuously move along the track.

Abstract: A pressure-to-rotation converter includes a securing device, an actuating device, a transmission device, and a drive device. The securing device includes a bottom plate formed with a guide groove unit, and a top plate formed with a hole unit registered with the guide groove unit. The actuating device includes a follower unit movably received in the guide groove unit and an actuating unit movably received in the hole unit for driving movement of the follower unit to drive in turn movement of the transmission device. The drive device includes a swing unit coupled to a rotary drive shaft and driven by the transmission device to swing and thereby rotate the rotary drive shaft.

Abstract: A buoyancy power generating apparatus includes: a tank adapted to receive liquid therein; a buoyancy mechanism disposed in the tank and including a bladder support and a bladder supported on the bladder support; a vertical support disposed outwardly of the tank; a weight unit supported movably on the vertical support; and a transmission coupled to the buoyancy mechanism and the weight unit so that the weight unit can be driven by the bladder to move upwardly during upward movement of the bladder and that the weight unit can be moved downwardly by gravity when the bladder is deflated.

Abstract: A pressure-to-rotation converter includes a securing device, an actuating device, a transmission device, and a drive device. The securing device includes a bottom plate formed with a guide groove unit, and a top plate formed with a hole unit registered with the guide groove unit. The actuating device includes a follower unit movably received in the guide groove unit and an actuating unit movably received in the hole unit for driving movement of the follower unit to drive in turn movement of the transmission device. The drive device includes a swing unit coupled to a rotary drive shaft and driven by the transmission device to swing and thereby rotate the rotary drive shaft.