Abstract: A beverage cooling device includes an outer bucket, an inner container unit, and a drive unit. The inner container unit is disposed in the outer bucket, is adapted to receive a bottled alcoholic beverage therein, and cooperates with the outer bucket to confine a cooling space that surrounds the inner container unit and that is adapted for receiving a cooling medium, such as ice cubes or ice water. The drive unit drives rotation of the inner container unit relative to the outer bucket.

Abstract: An angle-adjustable rotating device includes a mounting part disposed on a peripheral wall of a base member. A drive unit includes a motor and a drive shaft driven by the motor. A mounting seat is sleeved on the drive shaft, and is formed with an engaging member. A control mechanism is associated with the drive shaft in such a manner that rotation direction of the drive shaft is reversed when resistance to rotation of the drive shaft is greater than a predetermined amount of torque of the motor. A resistance providing member is mounted adjustably on the mounting part, and is engageable with the engaging member so as to provide resistance to rotation of the drive shaft.

Abstract: A humidifier includes a humidifier housing, a fan, and a water wheel device. The humidifier housing includes a lower base member that defines a liquid-containing compartment, and an upper cover member mounted on the lower base member and formed with a vapor outlet. The fan is mounted in the upper cover member, and is operable so as to generate air currents that flow through the vapor outlet. The water wheel device includes a horizontal wheel axle mounted rotatably in the humidifier housing, a drive motor for driving axial rotation of the wheel axle, and a plurality of disc members mounted spacedly and co-rotatably on the wheel axle. Each of the disc members has a lower disc portion extending into the liquid-containing compartment, and an upper disc portion disposed under and adjacent to the fan.

Abstract: An angle-adjustable rotating device includes a mounting part disposed on a peripheral wall of a base member. A drive unit includes a motor and a drive shaft driven by the motor. A mounting seat is sleeved on the drive shaft, and is formed with an engaging member. A control mechanism is associated with the drive shaft in such a manner that rotation direction of the drive shaft is reversed when resistance to rotation of the drive shaft is greater than a predetermined amount of torque of the motor. A resistance providing member is mounted adjustably on the mounting part, and is engageable with the engaging member so as to provide resistance to rotation of the drive shaft.